KSEW [190458]: Preliminary Local Storm Report

NWUS56 KSEW 190458
LSRSEW

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
858 PM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0857 PM NON-TSTM WND DMG 4 WNW ENUMCLAW 47.23N 122.06W
01/18/2010 KING WA TRAINED SPOTTER

EAST WIND 50 MPH WITH GUSTS TO 80 MPH.

&&

$$

DFELTON

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KMFR [190442]: Preliminary Local Storm Report

NWUS56 KMFR 190442
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
842 PM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0840 PM NON-TSTM WND GST 1 SE BROOKINGS 42.05N 124.28W
01/18/2010 M68 MPH CURRY OR TRAINED SPOTTER

SUSTAINED WINDS OF 50 MPH HAVE BEEN OCCURRING SINCE 815
PM.

&&

$$

BUNNAG

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KMFR [190421]: Preliminary Local Storm Report

NWUS56 KMFR 190421
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
821 PM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0818 PM HEAVY SNOW 6 NW MOUNT SHASTA 41.38N 122.39W
01/18/2010 M6.0 INCH SISKIYOU CA TRAINED SPOTTER

1 PM TO 8 PM SNOWFALL. STILL SNOWING BUT WITH STARTING TO
MIX WITH RAIN.

0818 PM HEAVY RAIN 5 N WEED 41.50N 122.37W
01/18/2010 M1.59 INCH SISKIYOU CA TRAINED SPOTTER

12 HR RAINFALL ENDING AT 8 PM.

&&

$$

BUNNAG

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KREV [190319]: Preliminary Local Storm Report

NWUS55 KREV 190319
LSRREV

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RENO NV
719 PM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0400 PM SNOW 4 SSW GARDNERVILLE 38.90N 119.77W
01/18/2010 M4.0 INCH DOUGLAS NV TRAINED SPOTTER

4 INCHES NEW SNOWFALL FROM 1230PM TO 330PM. HEAVY, WET
SNOW. CURRENTLY VERY LIGHT SNOW FALLING. CURRENT TEMP IS
32F WITH WINDS INCREASING.

0408 PM HEAVY SNOW ESE MAMMOTH LAKES 37.64N 118.95W
01/18/2010 E12.0 INCH MONO CA TRAINED SPOTTER

ESTIMATED 12 INCHES NEW SNOWFALL AT MAMMOTH LAKES RANGER
STATION AT 7800 FT AND STILL SNOWING HEAVILY.

0420 PM SNOW 5 SSW TAHOE CITY 39.10N 120.17W
01/18/2010 M5.5 INCH PLACER CA TRAINED SPOTTER

5 1/2 INCHES NEW SNOWFALL FROM THIS MORNING AT 6350FT.
SNOW STOPPED EARLIER BUT CURRENTLY STARTING TO SNOW
HEAVILY. ESTIMATE NEW SNOW FALL OF 2 INCHES PER HOUR WITH
THIS BAND.

0446 PM SNOW DAGGET PASS 38.98N 119.89W
01/18/2010 M9.0 INCH DOUGLAS NV FIRE DEPT/RESCUE

9 INCHES NEW SNOWFALL. 0.60 INCHES WATER EQUIVALENT.

0446 PM SNOW 5 W BECKWOURTH 39.81N 120.47W
01/18/2010 M6.0 INCH PLUMAS CA TRAINED SPOTTER

6 INCHES NEW SNOWFALL. CURRENTLY 28F.

0446 PM SNOW 4 SSE COLEVILLE 38.52N 119.47W
01/18/2010 M3.0 INCH MONO CA TRAINED SPOTTER

3 INCHES NEW SNOWFALL.

0446 PM SNOW NW SOUTH LAKE TAHOE 38.94N 119.99W
01/18/2010 M0.0 INCH EL DORADO CA TRAINED SPOTTER

5 INCHES NEW SNOWFALL.

0520 PM SNOW 3 ENE ALPINE MEADOWS 39.18N 120.16W
01/18/2010 M6.0 INCH PLACER CA TRAINED SPOTTER

TOTAL SNOWFALL SINCE NOON AT 7000 FT.

0545 PM SNOW CARSON CITY 39.17N 119.76W
01/18/2010 M3.0 INCH CARSON CITY NV CO-OP OBSERVER

LIQUID EQUIVALENT 0.39 INCH. MOST SNOW ACCUMULATED
BETWEEN 2 AND 5 PM. SNOW STILL FALLING.

0650 PM SNOW 5 WSW GARDNERVILLE 38.91N 119.83W
01/18/2010 M4.3 INCH DOUGLAS NV TRAINED SPOTTER

4.3 INCHES NEW SNOWFALL FROM 1100AM TO 645PM. PEAK WIND
GUST 55MPH AT 1543L.

0650 PM HEAVY RAIN 1 E SLOAT 39.87N 120.72W
01/18/2010 M1.25 INCH PLUMAS CA TRAINED SPOTTER

1.25 INCHES RAIN STORM TOTAL. WET SNOW AT TIMES.

0718 PM HEAVY SNOW 1 NE INCLINE VILLAGE 39.26N 119.94W
01/18/2010 M10.0 INCH WASHOE NV TRAINED SPOTTER

TOTAL SINCE NOON. STILL SNOWING.

&&

$$

MDEUTSCH

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KMFR [190240]: Preliminary Local Storm Report

NWUS56 KMFR 190240
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
640 PM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0639 PM NON-TSTM WND GST 1 SE BROOKINGS 42.05N 124.28W
01/18/2010 M60 MPH CURRY OR TRAINED SPOTTER

&&

$$

HOLTZ

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KOTX [190232]: Preliminary Local Storm Report

NWUS56 KOTX 190232
LSROTX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPOKANE WA
632 PM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0600 PM FLOOD 8 SW OKANOGAN 48.29N 119.70W
01/17/2010 OKANOGAN WA NEWSPAPER

THE CHRONICLE OUT OF OMAK PASSED ALONG REPORT OF A
WASHOUT ALONG HIGHWAY 20 APPROXIMATELY 8 TO 10 MILES
SOUTHWEST OF OKANOGAN. THE WASHOUT OCCURRED SUNDAY NIGHT
AND WAS LIKELY CAUSED DUE TO A MUD/DEBRIS SLIDE RESULTING
FROM RAIN/SNOWMELT ACROSS A RECENT BURN SCAR FROM 2009
ODEN RD FIRE.

0550 PM FLOOD OMAK 48.41N 119.53W
01/18/2010 OKANOGAN WA NEWSPAPER

CONTACTED THE CHRONICLE WHICH PASSED ALONG THAT THERE IS
SIGNIFICANT WATER PONDING ACROSS MOST LOW-LYING AREAS
THROUGHOUT OMAK AND OROVILLE. THIS INCLUDES CITY PARKS,
FIELDS, AND LOW POINTS OF CITY ROADS.

0600 PM FLOOD 7 SSW TONASKET 48.61N 119.50W
01/18/2010 OKANOGAN WA TRAINED SPOTTER

RESIDENT IN CRUMBACHER AREA IS UTILIZING SANDBAGS AND
PUMPS TO KEEP WATER IN ADJACENT FLOODED FIELDS FROM
COMING INTO HOUSE.

&&

$$

SBODNAR

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KHNX [190223]: Preliminary Local Storm Report...summary...updated

NWUS56 KHNX 190223 AAA
LSRHNX

PRELIMINARY LOCAL STORM REPORT...SUMMARY...UPDATED
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY CA
516 PM PST MON JAN 18 2010

UPDATED TIME FOR FATAL ACCIDENT

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0713 AM NON-TSTM WND GST 3 SSE GRAPEVINE 34.90N 118.90W
01/18/2010 M84.00 MPH KERN CA MESONET

GRAPEVINE PEAK RAWS...ELEV 4647 FT

0733 AM NON-TSTM WND GST GRAPEVINE 34.94N 118.93W
01/18/2010 M66.00 MPH KERN CA MESONET

GRAPEVINE CHP WEIGH STATION ELEV 1358 FT

0800 AM NON-TSTM WND DMG TEHACHAPI 35.13N 118.44W
01/18/2010 KERN CA CO-OP OBSERVER

MOUNTAIN VALLEY AIRPORT IN TEHACHAPI WIND DAMAGE 20X14
FOOT HANGER DOOR BLOWN DOWN. 4FT DIAMETER TREE BLOWN DOWN
ALONG WITH NUMEROUS SMALLER TREES.

0826 AM NON-TSTM WND DMG 6 W TEHACHAPI 35.13N 118.55W
01/18/2010 KERN CA BROADCAST MEDIA

SHINGLES BLOWN OFF A ROOF IN STALLION SPRINGS.

0913 AM NON-TSTM WND GST GRAPEVINE 34.94N 118.93W
01/18/2010 M86.00 MPH KERN CA MESONET

GRAPEVINE PEAK ELEV 4647 FT

0926 AM NON-TSTM WND GST PANOCHE ROAD 36.73N 120.48W
01/18/2010 M37.00 MPH FRESNO CA MESONET

0930 AM NON-TSTM WND DMG 5 W FRAZIER PARK 34.82N 119.03W
01/18/2010 KERN CA BROADCAST MEDIA

*** 1 FATAL *** A 21 YEAR OLD MAN WAS KILLED TODAY AT THE
PINE MOUNTAIN CLUB. DUE TO STRONG WINDS OF 85 MPH WHICH
KNOCKED DOWN A TREE THAT FELL INTO THE MAN.

0944 AM NON-TSTM WND GST BAKERSFIELD 35.36N 119.00W
01/18/2010 M49.00 MPH KERN CA ASOS

MEADOWS FIELD AIRPORT

1222 PM NON-TSTM WND GST AVENAL 36.03N 120.11W
01/18/2010 M49.00 MPH KINGS CA MESONET

AVENAL MESONET

1240 PM NON-TSTM WND GST LEMOORE STATION 36.26N 119.90W
01/18/2010 M46.00 MPH KINGS CA ASOS

1241 PM NON-TSTM WND GST BUTTONWILLOW 35.40N 119.47W
01/18/2010 M40.00 MPH KERN CA MESONET

BUTTONWILLOW MESONET

1242 PM HEAVY RAIN TAFT 35.14N 119.46W
01/18/2010 E1.40 INCH KERN CA CO-OP OBSERVER

A CO OP WEATHER OBSERVER REPORTS HEAVY RAIN SINCE 11 AM
THIS MORNING. THE TOTAL AMOUNT WAS 1.40 INCHES.

1250 PM NON-TSTM WND GST KETTLEMAN HILLS RAWS 36.03N 120.06W
01/18/2010 M60.00 MPH KINGS CA MESONET

KETTLEMAN HILLS ELEV 810 FT

0113 PM NON-TSTM WND GST 10 NW MCKITTRICK 35.41N 119.75W
01/18/2010 M70.00 MPH KERN CA MESONET

TWISSELMAN MESONET 3232 FT

0135 PM NON-TSTM WND GST VISALIA 36.33N 119.32W
01/18/2010 M39.00 MPH TULARE CA AWOS

VISALIA MUNICIPAL AIRPORT

0138 PM TSTM WND GST ALPAUGH 35.89N 119.48W
01/18/2010 U0.00 MPH TULARE CA BROADCAST MEDIA

LOCAL TV STATION RELAYED A REPORT OF A ROOF BLOWN OFF AND
POWER LINES DOWN IN ALPHAUGH.

0145 PM NON-TSTM WND GST 7 NW MERCED 37.37N 120.57W
01/18/2010 M47.00 MPH MERCED CA ASOS

MERCED CASTLE AIRPORT

0146 PM TSTM WND DMG FRESNO 36.78N 119.79W
01/18/2010 FRESNO CA LAW ENFORCEMENT

FRESNO COUNTY SHERIFF REPORTED TELEPHONE POLES AND POWER
LINES DOWN AS A LINE OF HEAVY SHOWERS MOVED THROUGH.

0155 PM NON-TSTM WND GST SHADEQUARTER RAWS 36.57N 118.96W
01/18/2010 M57.00 MPH TULARE CA MESONET

ELEV 4360 FT

0155 PM FLOOD BAKERSFIELD 35.36N 119.00W
01/18/2010 KERN CA LAW ENFORCEMENT

UNION AT 17TH ST OVER 4 INCHES OF WATER ON ROADWAY

0216 PM FLOOD 3 SE BAKERSFIELD 35.33N 118.97W
01/18/2010 KERN CA LAW ENFORCEMENT

CALIFORNIA HIGHWAY PATROL REPORTED ROADWAY FLOODIONG ON
EDISON HIGHWAY JUST EAST OF FAIRFAX ROAD.

0230 PM TSTM WND GST COARSEGOLD 37.26N 119.70W
01/18/2010 E45.00 MPH MADERA CA TRAINED SPOTTER

SPOTTER REPORTED VERY HEAVY RAIN AND GUSTY WINDS AROUND
45 MPH.

0326 PM FUNNEL CLOUD 5 SW FRESNO 36.73N 119.86W
01/18/2010 FRESNO CA TRAINED SPOTTER

TRAINED SPOTTER REPORTED A FUNNEL CLOUD JUST TO THE WEST
OF FRESNO.

0330 PM TSTM WND DMG FRESNO 36.78N 119.79W
01/18/2010 FRESNO CA BROADCAST MEDIA

BROADCASTERS REPORTED A TREE DOWN ON THE NORTH SIDE OF
FRESNO. CAUSED 50,000 POWER OUTAGES.

0351 PM NON-TSTM WND GST PIUTES RAWS 35.45N 118.28W
01/18/2010 M95.00 MPH KERN CA MESONET

OCCURRED WITH FROPA ELEV 6440 FT

0357 PM FLASH FLOOD RANDSBURG 35.37N 117.66W
01/18/2010 KERN CA LAW ENFORCEMENT

1 LANE OF RED ROCK RANDSBURG RD CLOSED DUE TO HEAVY
MUDFLOW

&&

$$

JBRO

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KLOX [190156]: Preliminary Local Storm Report

NWUS56 KLOX 190156
LSRLOX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OXNARD CA
555 PM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0330 PM FLASH FLOOD ALTADENA 34.19N 118.14W
01/18/2010 LOS ANGELES CA BROADCAST MEDIA

DEBRIS AND WATER OVER CANYON CREST ROAD NEAR THE BRIDGE
BELOW MILLARD CANYON. SEVERAL CARS TRAPPED.

0230 PM FLASH FLOOD VAN NUYS 34.18N 118.45W
01/18/2010 LOS ANGELES CA FIRE DEPT/RESCUE

SEPULVEDA BASIN AND BALBOA BLVD - STREETS FLOODED AND
PEOPLE RESCUED FROM THE TOPS OF THEIR VEHICLES.

0230 PM NON-TSTM WND DMG WOODLAND HILLS 34.17N 118.59W
01/18/2010 LOS ANGELES CA BROADCAST MEDIA

LARGE TREE BLOWN DOWN

&&

$$

BOLDT

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KHNX [190116]: Preliminary Local Storm Report...summary

NWUS56 KHNX 190116
LSRHNX

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY CA
516 PM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0713 AM NON-TSTM WND GST 3 SSE GRAPEVINE 34.90N 118.90W
01/18/2010 M84.00 MPH KERN CA MESONET

GRAPEVINE PEAK RAWS...ELEV 4647 FT

0733 AM NON-TSTM WND GST GRAPEVINE 34.94N 118.93W
01/18/2010 M66.00 MPH KERN CA MESONET

GRAPEVINE CHP WEIGH STATION ELEV 1358 FT

0800 AM NON-TSTM WND DMG TEHACHAPI 35.13N 118.44W
01/18/2010 KERN CA CO-OP OBSERVER

MOUNTAIN VALLEY AIRPORT IN TEHACHAPI WIND DAMAGE 20X14
FOOT HANGER DOOR BLOWN DOWN. 4FT DIAMETER TREE BLOWN DOWN
ALONG WITH NUMEROUS SMALLER TREES.

0826 AM NON-TSTM WND DMG 6 W TEHACHAPI 35.13N 118.55W
01/18/2010 KERN CA BROADCAST MEDIA

SHINGLES BLOWN OFF A ROOF IN STALLION SPRINGS.

0913 AM NON-TSTM WND GST GRAPEVINE 34.94N 118.93W
01/18/2010 M86.00 MPH KERN CA MESONET

GRAPEVINE PEAK ELEV 4647 FT

0926 AM NON-TSTM WND GST PANOCHE ROAD 36.73N 120.48W
01/18/2010 M37.00 MPH FRESNO CA MESONET

0944 AM NON-TSTM WND GST BAKERSFIELD 35.36N 119.00W
01/18/2010 M49.00 MPH KERN CA ASOS

MEADOWS FIELD AIRPORT

1222 PM NON-TSTM WND GST AVENAL 36.03N 120.11W
01/18/2010 M49.00 MPH KINGS CA MESONET

AVENAL MESONET

1240 PM NON-TSTM WND GST LEMOORE STATION 36.26N 119.90W
01/18/2010 M46.00 MPH KINGS CA ASOS

1241 PM NON-TSTM WND GST BUTTONWILLOW 35.40N 119.47W
01/18/2010 M40.00 MPH KERN CA MESONET

BUTTONWILLOW MESONET

1242 PM HEAVY RAIN TAFT 35.14N 119.46W
01/18/2010 E1.40 INCH KERN CA CO-OP OBSERVER

A CO OP WEATHER OBSERVER REPORTS HEAVY RAIN SINCE 11 AM
THIS MORNING. THE TOTAL AMOUNT WAS 1.40 INCHES.

1250 PM NON-TSTM WND GST KETTLEMAN HILLS RAWS 36.03N 120.06W
01/18/2010 M60.00 MPH KINGS CA MESONET

KETTLEMAN HILLS ELEV 810 FT

0113 PM NON-TSTM WND GST 10 NW MCKITTRICK 35.41N 119.75W
01/18/2010 M70.00 MPH KERN CA MESONET

TWISSELMAN MESONET 3232 FT

0135 PM NON-TSTM WND GST VISALIA 36.33N 119.32W
01/18/2010 M39.00 MPH TULARE CA AWOS

VISALIA MUNICIPAL AIRPORT

0138 PM TSTM WND GST ALPAUGH 35.89N 119.48W
01/18/2010 U0.00 MPH TULARE CA BROADCAST MEDIA

LOCAL TV STATION RELAYED A REPORT OF A ROOF BLOWN OFF AND
POWER LINES DOWN IN ALPHAUGH.

0145 PM NON-TSTM WND GST 7 NW MERCED 37.37N 120.57W
01/18/2010 M47.00 MPH MERCED CA ASOS

MERCED CASTLE AIRPORT

0146 PM TSTM WND DMG FRESNO 36.78N 119.79W
01/18/2010 FRESNO CA LAW ENFORCEMENT

FRESNO COUNTY SHERIFF REPORTED TELEPHONE POLES AND POWER
LINES DOWN AS A LINE OF HEAVY SHOWERS MOVED THROUGH.

0155 PM NON-TSTM WND GST SHADEQUARTER RAWS 36.57N 118.96W
01/18/2010 M57.00 MPH TULARE CA MESONET

ELEV 4360 FT

0155 PM FLOOD BAKERSFIELD 35.36N 119.00W
01/18/2010 KERN CA LAW ENFORCEMENT

UNION AT 17TH ST OVER 4 INCHES OF WATER ON ROADWAY

0206 PM NON-TSTM WND DMG 5 W FRAZIER PARK 34.82N 119.03W
01/18/2010 KERN CA BROADCAST MEDIA

*** 1 FATAL *** A 21 YEAR OLD MAN WAS KILLED TODAY AT THE
PINE MOUNTAIN CLUB. DUE TO STRONG WINDS OF 85 MPH WHICH
KNOCKED DOWN A TREE THAT FELL INTO THE MAN.

0216 PM FLOOD 3 SE BAKERSFIELD 35.33N 118.97W
01/18/2010 KERN CA LAW ENFORCEMENT

CALIFORNIA HIGHWAY PATROL REPORTED ROADWAY FLOODIONG ON
EDISON HIGHWAY JUST EAST OF FAIRFAX ROAD.

0230 PM TSTM WND GST COARSEGOLD 37.26N 119.70W
01/18/2010 E45.00 MPH MADERA CA TRAINED SPOTTER

SPOTTER REPORTED VERY HEAVY RAIN AND GUSTY WINDS AROUND
45 MPH.

0326 PM FUNNEL CLOUD 5 SW FRESNO 36.73N 119.86W
01/18/2010 FRESNO CA TRAINED SPOTTER

TRAINED SPOTTER REPORTED A FUNNEL CLOUD JUST TO THE WEST
OF FRESNO.

0330 PM TSTM WND DMG FRESNO 36.78N 119.79W
01/18/2010 FRESNO CA BROADCAST MEDIA

BROADCASTERS REPORTED A TREE DOWN ON THE NORTH SIDE OF
FRESNO. CAUSED 50,000 POWER OUTAGES.

0351 PM NON-TSTM WND GST PIUTES RAWS 35.45N 118.28W
01/18/2010 M95.00 MPH KERN CA MESONET

OCCURRED WITH FROPA ELEV 6440 FT

0357 PM FLASH FLOOD RANDSBURG 35.37N 117.66W
01/18/2010 KERN CA LAW ENFORCEMENT

1 LANE OF RED ROCK RANDSBURG RD CLOSED DUE TO HEAVY
MUDFLOW

&&

$$

JBRO

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KMFR [190111]: Preliminary Local Storm Report

NWUS56 KMFR 190111
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
511 PM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0509 PM HEAVY SNOW 3 S MCCLOUD 41.22N 122.14W
01/18/2010 M2.5 INCH SISKIYOU CA TRAINED SPOTTER

24 HRS SNOW FALL ENDING AT 430 PM. WATER EQUIVALENT IS
2.7 INCHES.

&&

$$

BUNNAG

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 190054
SWODY1
SPC AC 190053

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0653 PM CST MON JAN 18 2010

VALID 190100Z - 191200Z

...NO SVR TSTM AREAS FORECAST...

...CNTRL CALIFORNIA...
THE LATEST WATER VAPOR IMAGERY SHOWS AN UPPER-LEVEL TROUGH ABOUT TO
MOVE ONSHORE ACROSS CA. SCATTERED THUNDERSTORMS ARE ONGOING AHEAD OF
THE UPPER-LEVEL TROUGH ALONG THE CA COAST FROM NEAR EUREKA SWD TO
SAN FRANCISCO AND INLAND ACROSS PARTS OF THE SACRAMENTO VALLEY.
FORECAST SOUNDINGS IN THIS AREA ALONG WITH OBJECTIVE ANALYSIS
SUGGEST THE ENVIRONMENT IS CHARACTERIZED BY WEAK INSTABILITY /MUCAPE
OF 200-400 J/KG/ AND STEEP MID-LEVEL LAPSE RATES. THIS MAY BE ENOUGH
FOR A MARGINAL HAIL THREAT IF CELLS CAN INITIATE NEAR THE COAST
SOUTH OF SAN FRANCISCO AND MOVE INLAND OVER THE NEXT FEW HOURS.
FURTHER SOUTH ACROSS THE LA BASIN...AN EXTENSIVE BAND OF RAIN HAS
STABILIZED THE AIRMASS AND A SEVERE THREAT IS NOT EXPECTED THIS
EVENING.

..BROYLES.. 01/19/2010

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KMFR [190043]: Preliminary Local Storm Report

NWUS56 KMFR 190043
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
443 PM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0434 PM HEAVY RAIN ESE MOUNT SHASTA 41.32N 122.31W
01/18/2010 M2.75 INCH SISKIYOU CA TRAINED SPOTTER

RAIN AMOUNT IS SINCE SUNDAY MORNING. RAIN CHANGED TO SNOW
AT ELEVATION 3700 FEET WITH ABOUT 0.5 OF AN INCH
ACCUMULATION IN THE LAST HOUR. STILL SNOWING HARD.

&&

$$

SPILDE

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KLOX [190035]: Preliminary Local Storm Report...corrected

NWUS56 KLOX 190035 CCA
LSRLOX

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE OXNARD CA
435 PM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

1210 PM NON-TSTM WND GST VANDENBERG AFB 34.75N 120.52W
01/18/2010 M76 MPH SANTA BARBARA CA MESONET

VANDENBERG HILLS RAWS STATION

0200 PM NON-TSTM WND GST 6 NNE SAN FERNANDO 34.37N 118.39W
01/18/2010 M81 MPH LOS ANGELES CA MESONET

CAMP 9 RAWS STATION

0200 PM NON-TSTM WND GST 16 WSW LANCASTER 34.60N 118.44W
01/18/2010 M80 MPH LOS ANGELES CA MESONET

GRASS MOUNTAIN RAWS STATION

0100 PM NON-TSTM WND GST 3 NNE SANTA CLARITA 34.45N 118.49W
01/18/2010 M64 MPH LOS ANGELES CA MESONET

SAUGAS RAWS STATION

&&

$$

BOLDT

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KMFR [182350]: Preliminary Local Storm Report

NWUS56 KMFR 182350
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
350 PM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0349 PM HEAVY SNOW 4 SW WEED 41.37N 122.42W
01/18/2010 M5.0 INCH SISKIYOU CA TRAINED SPOTTER

ELEVATION 4000 FEET. AMOUNT IS SINCE NOON PST. SNOW DEPTH
7.5 INCHES.

&&

$$

SPILDE

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KMFR [182345]: Preliminary Local Storm Report

NWUS56 KMFR 182345
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
345 PM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0345 PM HEAVY RAIN 5 N WEED 41.50N 122.37W
01/18/2010 M1.00 INCH SISKIYOU CA TRAINED SPOTTER

AMOUNT IS SINCE 8 AM PST...ABOUT AN 8-HOUR TOTAL.

&&

$$

SPILDE

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KHNX [182329]: Preliminary Local Storm Report

NWUS56 KHNX 182329
LSRHNX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY CA
329 PM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0326 PM FUNNEL CLOUD 5 SW FRESNO 36.73N 119.86W
01/18/2010 FRESNO CA TRAINED SPOTTER

TRAINED SPOTTER REPORTED A FUNNEL CLOUD JUST TO THE WEST
OF FRESNO.

&&

$$

JDB

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KHNX [182325]: Preliminary Local Storm Report...corrected

NWUS56 KHNX 182325
LSRHNX

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY CA
325 PM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0206 PM NON-TSTM WND DMG 5 W FRAZIER PARK 34.82N 119.03W
01/18/2010 KERN CA BROADCAST MEDIA

*** 1 FATAL *** A 21 YEAR OLD MAN WAS KILLED TODAY AT THE
PINE MOUNTAIN CLUB. DUE TO STRONG WINDS OF 85 MPH WHICH
KNOCKED DOWN A TREE THAT FELL INTO THE MAN.

&&

$$

JDB

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KHNX [182321]: Preliminary Local Storm Report...corrected

NWUS56 KHNX 182321 CCA
LSRHNX

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY CA
255 PM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0206 PM NON-TSTM WND DMG PINE MOUNTAIN CLUB 32.86N 116.50W
01/18/2010 KERN CA BROADCAST MEDIA

A 21 YEAR OLD MAN WAS KILLED TODAY AT THE PINE MOUNTAIN
CLUB. DUE TO STRONG WINDS OF 85 MPH WHICH KNOCKED DOWN A
TREE THAT FELL ONTO HIS HOUSE.

&&

$$

TMOR

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KHNX [182255]: Preliminary Local Storm Report

NWUS56 KHNX 182255
LSRHNX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY CA
255 PM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0206 PM TSTM WND DMG PINE VALLEY 32.86N 116.50W
01/18/2010 SAN DIEGO CA BROADCAST MEDIA

A 21 YEAR OLD MAN WAS KILLED TODAY AT THE PINE MOUNTAIN
CLUB. DUE TO STRONG WINDS OF 85 MPH WHICH KNOCKED DOWN A
TREE THAT FELL INTO THE MAN.

&&

$$

TMOR

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KHNX [182253]: Preliminary Local Storm Report

NWUS56 KHNX 182253
LSRHNX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY CA
253 PM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0145 PM NON-TSTM WND GST 7 NW MERCED 37.37N 120.57W
01/18/2010 M47.00 MPH MERCED CA ASOS

MERCED CASTLE AIRPORT

&&

$$

JBRO

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KHNX [182238]: Preliminary Local Storm Report

NWUS56 KHNX 182238
LSRHNX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY CA
238 PM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0230 PM TSTM WND GST COARSEGOLD 37.26N 119.70W
01/18/2010 E45 MPH MADERA CA TRAINED SPOTTER

SPOTTER REPORTED VERY HEAVY RAIN AND GUSTY WINDS AROUND
45 MPH.

&&

$$

JBRO

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KHNX [182223]: Preliminary Local Storm Report

NWUS56 KHNX 182223
LSRHNX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY CA
223 PM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0138 PM TSTM WND GST ALPAUGH 35.89N 119.48W
01/18/2010 U0 MPH TULARE CA BROADCAST MEDIA

LOCAL TV STATION RELAYED A REPORT OF A ROOF BLOWN OFF AND
POWER LINES DOWN IN ALPHAUGH.

0146 PM TSTM WND GST FRESNO 36.78N 119.79W
01/18/2010 U0 MPH FRESNO CA LAW ENFORCEMENT

FRESNO COUNTY SHERIFF REPORTED TELEPHONE POLES AND POWER
LINES DOWN AS A LINE OF HEAVY SHOWERS MOVED THROUGH.

0216 PM FLOOD 3 SE BAKERSFIELD 35.33N 118.97W
01/18/2010 KERN CA LAW ENFORCEMENT

CALIFORNIA HIGHWAY PATROL REPORTED ROADWAY FLOODIONG ON
EDISON HIGHWAY JUST EAST OF FAIRFAX ROAD.

&&

$$

SANGER

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KLOX [182218]: Preliminary Local Storm Report

NWUS56 KLOX 182218
LSRLOX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OXNARD CA
218 PM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

1210 PM NON-TSTM WND GST VANDENBERG AFB 34.75N 120.52W
01/18/2010 M76 MPH SANTA BARBARA CA MESONET

VANDENBERG HILLS RAWS STATION

0200 PM TSTM WND GST 6 NNE SAN FERNANDO 34.37N 118.39W
01/18/2010 M81 MPH LOS ANGELES CA MESONET

CAMP 9 RAWS STATION

0200 PM TSTM WND GST 16 WSW LANCASTER 34.60N 118.44W
01/18/2010 M80 MPH LOS ANGELES CA MESONET

GRASS MOUNTAIN RAWS STATION

0100 PM NON-TSTM WND GST 3 NNE SANTA CLARITA 34.45N 118.49W
01/18/2010 M64 MPH LOS ANGELES CA MESONET

SAUGAS RAWS STATION

&&

$$

BOLDT

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KVEF [182201]: Preliminary Local Storm Report

NWUS55 KVEF 182201
LSRVEF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
201 PM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

1239 PM SNOW 1 WNW ASPENDELL 37.24N 118.60W
01/18/2010 M5.0 INCH INYO CA CO-OP OBSERVER

SNOW STARTED AT 730 AM TODAY IN BISHOP CREEK AT AN
ELEVATION OF 8500 FEET AND SO FAR 5 INCHES HAD
ACCUMULATED. THE OBSERVER ESTIMATED SNOW RATES OF A HALF
AN INCH PER HOUR.

0138 PM SNOW 2 SW MT. CHARLESTON 36.26N 115.65W
01/18/2010 M4.0 INCH CLARK NV CO-OP OBSERVER

THE MOUNT CHARLESTON CO-OP IN KYLE CANYON REPORTED 4
INCHES OF SNOW SO FAR TODAY AT AN ELEVATION OF 7600 FEET.
THE COMBINATION OF SNOW AND FOG WAS REDUCING VISIBILITY
TO LESS THAN 10 FEET.

&&

$$

STACHELSKI

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KLOX [182024]: Preliminary Local Storm Report

NWUS56 KLOX 182024
LSRLOX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OXNARD CA
1224 PM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

1140 AM NON-TSTM WND GST 1 SSE PISMO BEACH 35.13N 120.62W
01/18/2010 E60 MPH SAN LUIS OBISPO CA TRAINED SPOTTER

GUSTY WINDS AND VERY HEAVY RAIN.

&&

$$

BOLDT

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KMTR [181924]: Preliminary Local Storm Report

NWUS56 KMTR 181924
LSRMTR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
1124 AM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

1016 AM NON-TSTM WND GST 1 SSW HALF MOON BAY 37.46N 122.44W
01/18/2010 M50.00 MPH PZZ545 CA TRAINED SPOTTER

1030 AM HAIL 1 NW SAN FRANCISCO 37.78N 122.43W
01/18/2010 M0.25 INCH SAN FRANCISCO CA TRAINED SPOTTER

1037 AM NON-TSTM WND GST SSW MONTEREY 36.60N 121.88W
01/18/2010 M46.00 MPH MONTEREY CA TRAINED SPOTTER

&&

$$

ANDERSON

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 181920
SWODY1
SPC AC 181918

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0118 PM CST MON JAN 18 2010

VALID 182000Z - 191200Z

...THERE IS A SLGT RISK OF SVR TSTMS THIS AFTN ACROSS PARTS OF CNTRL
CALIFORNIA COASTAL AREAS AND THE INTERIOR VALLEYS...

...20Z UPDATE...
SLIGHT RISK PROBABILITIES ARE BEING MAINTAINED ALONG COASTAL AREAS
NORTH OF POINT CONCEPTION...NORTHWARD...EAST OF THE SAN FRANCISCO
BAY AREA...INTO PARTS OF THE SOUTHERN SACRAMENTO VALLEY...AND
EASTWARD...THROUGH PARTS OF THE SAN JOAQUIN VALLEY. THIS IS WHERE
LOW-LEVEL FLOW...JUST ABOVE GROUND LEVEL...REMAINS VERY
STRONG...NEAR A PRE-FRONTAL 50-60+ KT SOUTHERLY 850 MB JET AXIS.
ALTHOUGH CLOUD TO GROUND LIGHTNING HAS BEEN ALMOST NEGLIGIBLE...
PERIODIC INTENSIFICATION OF ELEMENTS WITHIN THE FRONTAL BAND COULD
STILL BE SUFFICIENT TO ENHANCE THE DOWNWARD TRANSFER OF HIGHER
MOMENTUM TO THE SURFACE. EVEN AHEAD OF THE FRONT...THIS POTENTIAL
MAY BEGIN TO DIMINISH BY 19/00Z...AS MODELS GENERALLY INDICATE
SUBSTANTIAL WEAKENING AND VEERING OF THE LOW-LEVEL FLOW FIELDS... AS
THE APPROACHING SHORT WAVE TROUGH CONTINUES TO SPLIT...AND THE
PRIMARY SURFACE CYCLONE LIFTS NORTHWARD TO THE WEST OF NORTHERN
PACIFIC COASTAL AREAS.

..KERR.. 01/18/2010

.PREV DISCUSSION... /ISSUED 0957 AM CST MON JAN 18 2010/

...CA...
ACTIVE WEATHER PATTERN WILL CONTINUE ACROSS THE WEST COAST TODAY
WITH A SERIES OF POTENT SYSTEMS APPROACHING THE REGION. LEADING
IMPULSE APPEARS TO BE WEAKENING/SPLITTING AS IT APPROACHES CA THIS
MORNING. PRECEDING MOIST PLUME WILL MAINTAIN ENHANCED QPF AND
CLOUDS OVER MUCH OF CA THROUGH THE DAY LIMITING HEATING AND
POTENTIAL INSTABILITY AS PORTION OF THIS IMPULSE PROGRESSES EWD
ACROSS THE SIERRAS. HOWEVER...REGION WILL REMAIN WITHIN FAVORABLE
EXIT REGION OF ENHANCED MID/UPPER LEVEL JET AS 100-150 KT H25 SPEED
MAX NOSES INTO FAR SRN CA/NRN BAJA REGION BY THE END OF THE PERIOD.

SMALL POCKETS OF WEAK INSTABILITY MAY EVOLVE INLAND INTO THE
INTERIOR VALLEYS OF CA THIS AFTERNOON...AND ALONG AND WEST OF THE
COASTAL RANGES WHERE SOME CLEARING MAY OCCUR IN WAKE OF LEADING
SYSTEM. THIS SHOULD PROVE FAVORABLE FOR A FEW TSTMS WITHIN BROADER
PRECIPITATION SHIELD. SHEAR WILL REMAIN QUITE STRONG AND MORE THAN
ADEQUATE FOR ORGANIZATION INTO SMALL LINES AND PERHAPS TRANSIENT LOW
LEVEL ROTATION IN STRONGER LOW TOPPED STORMS NEAR THE COAST.
ALTHOUGH...FORECAST SOUNDINGS INDICATE THAT NEAR MOIST ADIABATIC
THERMODYNAMIC PROFILES WILL REMAIN PREVALENT ACROSS THE AREA WHICH
WILL LIMIT INSTABILITY AND OVERALL POTENTIAL/COVERAGE OF STRONG TO
SEVERE TSTMS. THE THREAT OF AN ISOLATED DAMAGING WIND GUST AND/OR
ISOLATED TORNADO MAY ACCOMPANY ANY PERSISTENT/ORGANIZED UPDRAFT.
LATER TONIGHT...COOLING MID LEVELS AND MORE OPEN CELLULAR
DEVELOPMENT SHOULD INCREASE POTENTIAL FOR HAIL IN ISOLATED CORES
NEAR THE CENTRAL CA COAST AS NEXT IMPULSE APPROACHES.

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KMFR [181854]: Preliminary Local Storm Report

NWUS56 KMFR 181854
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
1053 AM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

1043 AM NON-TSTM WND GST ASHLAND 42.19N 122.70W
01/18/2010 M100 MPH JACKSON OR PUBLIC

HANDHELD ANEMOMETER MEASURED 100 MPH WIND GUST AT 7533 FT
AT THE TOP OF MT ASHLAND SKI AREA. A 69 MPH WIND GUST WAS
MEASURED AT THE PARKING LOT AT 6600 FT. SUSTAINED WINDS
HAVE BEEN 40-50 MPH ALL MORNING.

&&

$$

SPILDE

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KSEW [181831]: Preliminary Local Storm Report

NWUS56 KSEW 181831
LSRSEW

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
1031 AM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0936 AM NON-TSTM WND GST 1 E NOON 48.80N 122.37W
01/18/2010 M49 MPH WHATCOM WA TRAINED SPOTTER

WIND WAS FROM THE SOUTH-SOUTHWEST.

&&

$$

GRUB

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KSEW [181817]: Preliminary Local Storm Report

NWUS56 KSEW 181817
LSRSEW

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
1017 AM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0210 AM NON-TSTM WND GST 4 NW MOUNT VERNON 48.47N 122.38W
01/18/2010 M51.00 MPH SKAGIT WA TRAINED SPOTTER

0733 AM NON-TSTM WND GST 2 WNW ANACORTES 48.50N 122.66W
01/18/2010 M54.00 MPH SKAGIT WA TRAINED SPOTTER

SSE WIND, SUSTAINED 30 MPH GUST 54.

0823 AM NON-TSTM WND GST 32 N HOQUIAM 47.44N 123.89W
01/18/2010 U0.00 MPH GRAYS HARBOR WA BROADCAST MEDIA

GRAYS HARBOR DAILY WORLD REPORTED NUMEROUS POWER OUTAGES
IN THE QUINAULT AREA.

&&

$$

CERNIGLIA

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MESO: Mesoscale Discussion 0010

ACUS11 KWNS 181816
SWOMCD
SPC MCD 181816
CAZ000-181915-

MESOSCALE DISCUSSION 0010
NWS STORM PREDICTION CENTER NORMAN OK
1216 PM CST MON JAN 18 2010

AREAS AFFECTED...CNTRL CA COAST

CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY

VALID 181816Z - 181915Z

THE POTENTIAL FOR ISOLATED SEVERE STORMS IS EXPECTED TO DEVELOP
INLAND BY 1830Z. A WW IS NOT CURRENTLY ANTICIPATED.

RECENT TRENDS IN SAN FRANCISCO RADAR DATA INDICATE
DEEPENING/INTENSIFYING CONVECTION ALONG A SHORT BAND APPROACHING
MONTEREY BAY. THIS ACTIVITY APPEARS TO BE ASSOCIATED WITH A
WELL-DEFINED VORTICITY MAXIMUM LIFTING NEWD TOWARD SAN FRANCISCO BAY
AS OF 18Z. PERSISTENT CLOUDINESS AND WEAKER PRECIPITATION HAVE
PRECEDED THIS DEVELOPING BAND THROUGH THE MORNING...EFFECTIVELY
LIMITING BOUNDARY LAYER HEATING AND RESULTANT AIR MASS
DESTABILIZATION.

DESPITE THE PRESENCE OF STRONG...AMBIENT VERTICAL SHEAR /REF.
CURRENT SAN FRANCISCO VWP/...IT APPEARS THAT THE VERY WEAK
CONVECTIVE INSTABILITY WILL TEND TO LIMIT A MORE ROBUST SEVERE
THREAT. STILL...SOME THREAT FOR MARGINALLY SEVERE HAIL AND OR
STRONG WIND GUSTS WILL EXIST WITH THE STRONGER STORMS APPROACHING
THE SAN JOSE AND MONTEREY AREAS BETWEEN 1830-1900Z.

..MEAD.. 01/18/2010

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...MTR...

LAT...LON 36992241 37462254 37852249 37862206 37162152 36642137
36312155 36222172 36372202 36992241

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KLOX [181815]: Preliminary Local Storm Report

NWUS56 KLOX 181815
LSRLOX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OXNARD CA
1014 AM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0900 AM NON-TSTM WND GST 12 NNW CUYAMA 35.10N 119.73W
01/18/2010 M60.00 MPH SAN LUIS OBISPO CA MESONET

CARRIZO RAWS STATION REPORT

1000 AM TSTM WND GST 6 NNE SAN FERNANDO 34.37N 118.39W
01/18/2010 M65.00 MPH LOS ANGELES CA MESONET

CAMP 9 RAWS STATION

1000 AM NON-TSTM WND GST 16 WSW LANCASTER 34.60N 118.44W
01/18/2010 M78.00 MPH LOS ANGELES CA MESONET

GRASS MOUNTAIN RAWS STATION

&&

$$

BOLDT

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KLOX [181804]: Preliminary Local Storm Report

NWUS56 KLOX 181804
LSRLOX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OXNARD CA
1004 AM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0953 AM NON-TSTM WND GST 7 NNE MOUNT WILSON 34.32N 118.01W
01/18/2010 M68 MPH LOS ANGELES CA MESONET

CHILAO RAWS STATION REPORT

&&

$$

BOLDT

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MESO: Mesoscale Discussion 0009

ACUS11 KWNS 181803
SWOMCD
SPC MCD 181803
CAZ000-182200-

MESOSCALE DISCUSSION 0009
NWS STORM PREDICTION CENTER NORMAN OK
1203 PM CST MON JAN 18 2010

AREAS AFFECTED...SRN SIERRA MOUNTAINS OF CA

CONCERNING...HEAVY SNOW

VALID 181803Z - 182200Z

SNOWFALL RATES AOA 2 IN/HR WILL BECOME MORE PROBABLE BY MID TO LATE
AFTERNOON ACROSS MAINLY THE SRN SIERRA MOUNTAINS OF CA.

MORNING WV IMAGERY DEPICTS A S/W TROUGH QUICKLY APPROACHING
CA...WITH AN EXPANSIVE SHIELD OF PRECIPITATION OCCURRING WITHIN A
ZONE OF LARGE SCALE ASCENT AHEAD OF THE UPPER DISTURBANCE. THIS AREA
OF PRECIPITATION WILL OVERSPREAD THE SIERRA MOUNTAINS AND FOOTHILLS
THROUGH THE MORNING AND INTO THE AFTERNOON...THOUGH SNOW LEVELS WILL
INITIALLY RESIDE ABOVE 5500-6000 FT MSL.

THE MORE SUBSTANTIAL THREAT FOR HEAVY SNOWFALL RATES /AOA 2 IN PER
HR/ IS FORECAST TO DEVELOP DURING THE 21-00Z TIME PERIOD AS THE
UPPER IMPULSE MOVES ACROSS THE REGION. DYNAMIC FORCING FOR ASCENT
WITH THIS FEATURE...ALONG WITH INCREASING LOW-MID LEVEL WIND SPEEDS
/LEADING TO INCREASING UPSLOPE FLOW/ WILL OCCUR IN CONJUNCTION WITH
MID LEVEL COOLING...RESULTING IN STEEPENING LAPSE RATES AND THE
DEVELOPMENT OF MODEST CONVECTIVE INSTABILITY WITHIN THE DENDRITIC
GROWTH ZONE. IN ADDITION...THOUGH RECENT TRENDS IN SURFACE
OBSERVATIONS SHOW WARMING IS TAKING PLACE ACROSS THE HIGHER
TERRAIN...MODEL GUIDANCE IS CONSISTENT IN INDICATING FALLING SNOW
LEVELS BY 00-03Z ATTENDANT WITH THE COOLER MID LEVEL AIRMASS
/POSSIBLY AS LOW AS 4500-5000 FT MSL/. AFTER 03Z...FORCING FOR
ASCENT ALONG WITH MOISTURE AND INSTABILITY ARE FORECAST TO SLOWLY
BEGIN TO WANE...WHICH SHOULD RESULT IN A DECREASING PROBABILITY FOR
2 IN/HR SNOWFALL RATES.

..GARNER.. 01/18/2010

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

...NOTICE...
SPC WINTER WEATHER MESOSCALE DISCUSSIONS WILL BE ISSUED ON A
SCHEDULED BASIS FROM DECEMBER 1 THROUGH FEBRUARY 28...FOUR
TIMES A DAY...AROUND 00 UTC...06 UTC...12 UTC...AND 18 UTC
FOR SIGNIFICANT SHORT RANGE WINTER WEATHER EVENTS.

ATTN...WFO...VEF...REV...HNX...STO...

LAT...LON 38052014 38732042 38912004 38141926 37731887 36951836
36411811 36151828 36261869 36881886 38052014

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KREV [181750]: Preliminary Local Storm Report

NWUS55 KREV 181750
LSRREV

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RENO NV
950 AM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0806 AM HEAVY RAIN 1 E SLOAT 39.87N 120.72W
01/18/2010 M0.90 INCH PLUMAS CA TRAINED SPOTTER

STORM TOTAL RAINFALL

0809 AM HEAVY SNOW 5 ENE CISCO 39.32N 120.45W
01/18/2010 M7.0 INCH NEVADA CA TRAINED SPOTTER

24 HOUR STORM TOTAL SNOWFALL. WATER EQUIVALENT OF 1.07
INCHES.

&&

$$

JKIELHOR

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KHNX [181733]: Preliminary Local Storm Report

NWUS56 KHNX 181733
LSRHNX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY CA
933 AM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0926 AM NON-TSTM WND GST PANOCHE ROAD 36.73N 120.48W
01/18/2010 M37.00 MPH FRESNO CA MESONET

&&

$$

JDB

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 181730
SWODY2
SPC AC 181729

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1129 AM CST MON JAN 18 2010

VALID 191200Z - 201200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
MODELS INDICATE THAT A VERY STRONG...GENERALLY ZONAL...UPPER JET NOW
APPROACHING SOUTHERN CALIFORNIA/NORTHERN BAJA...WILL CONTINUE TO
NOSE EASTWARD INTO THE SOUTHERN BRANCH OF THE PREVAILING SPLIT UPPER
FLOW REGIME ACROSS NORTH AMERICA. THE EXIT REGION OF THIS FEATURE
MAY SPREAD ACROSS THE LOWER RIO GRANDE VALLEY INTO WESTERN GULF
COASTAL AREAS AS EARLY AS 12Z WEDNESDAY. WITHIN THIS REGIME A
SERIES OF SHORT WAVE IMPULSES ARE PROGGED TO ADVANCE INLAND OFF THE
PACIFIC. BUT GUIDANCE IS SUGGESTIVE THAT THEY WILL TEND TO SPLIT
APART PRIOR TO REACHING THE COAST...WITH NORTHERN PORTIONS LIFTING
NORTH NORTHEASTWARD AND WEAKENING WITHIN BROADER SCALE NORTHERN
BRANCH RIDGING...AND SOUTHERN PORTIONS MIGRATING EASTWARD WITHIN
BROAD TROUGHING DEVELOPING ACROSS THE SOUTHERN PLATEAU INTO PORTIONS
OF THE LOWER MISSISSIPPI VALLEY. THE SOUTHERN IMPULSES ARE PROGGED
TO SUPPORT SURFACE CYCLOGENESIS ACROSS THE SOUTH CENTRAL HIGH PLAINS
TUESDAY...ALONG WITH AN INCREASINGLY SOUTHERLY COMPONENT TO THE
LOW-LEVEL FLOW FROM THE GULF OF MEXICO INTO PARTS OF THE SOUTHERN
PLAINS/LOWER MISSISSIPPI VALLEY.

...CALIFORNIA...
VARIABILITY EXISTS AMONG THE MODELS CONCERNING THE TIMING OF THE
INLAND PROGRESSION OF ONE SHORT WAVE TROUGH DURING THIS
PERIOD...WHICH WILL IMPACT CONVECTIVE POTENTIAL. CURRENTLY...IT
APPEARS A POSSIBILITY THAT MID-LEVEL COOLING ASSOCIATED WITH A -24
TO -28C 500 MB THERMAL TROUGH COULD BECOME JUXTAPOSED WITH THE WARM
SECTOR OF A WEAKENING/OCCLUDING FRONTAL WAVE...NEAR COASTAL AREAS
NORTH OF POINT CONCEPTION THROUGH THE LOS ANGELES BASIN...TUESDAY
AFTERNOON AND EVENING. IF THIS OCCURS... DESTABILIZATION COULD
BECOME SUFFICIENT FOR VIGOROUS LOW-TOPPED THUNDERSTORMS...IN THE
PRESENCE OF SUFFICIENT SHEAR FOR THE EVOLUTION OF SUPERCELLS.

...OZARK PLATEAU/UPPER PORTIONS OF THE LWR MS VALLEY...
GULF BOUNDARY LAYER RECOVERY IN THE WAKE OF THE PASSAGE OF A
SIGNIFICANT UPPER TROUGH OVER THE WEEKEND HAS BEEN TEMPORARILY
SUPPRESSED. AND IT APPEARS PROBABLE THAT INLAND MOISTURE RETURN
THROUGH THIS PERIOD WILL BE RELATIVELY WEAK. COUPLED WITH
INHIBITIVE LOWER/MID TROPOSPHERIC WARMING FROM THE SOUTHWEST...
POTENTIAL FOR DEEP CONVECTIVE DEVELOPMENT IS A BIT UNCERTAIN.
HOWEVER...IT DOES NOT APPEAR OUT OF THE QUESTION THAT SCATTERED
STORMS COULD FORM WITHIN A STRENGTHENING LOW-LEVEL WARM ADVECTION
REGIME LATE TUESDAY EVENING OR OVERNIGHT. IF THIS OCCURS... CLOUD
BEARING LAYER SHEAR IN THE PRESENCE OF COOL THERMODYNAMIC PROFILES
WITH STEEPENING LAPSE RATES MAY BE SUFFICIENT FOR SMALL TO PERHAPS
MARGINALLY SEVERE HAIL.

..KERR.. 01/18/2010

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KBOX [181715]: Preliminary Local Storm Report...summary

NWUS51 KBOX 181715
LSRBOX

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE TAUNTON MA
1215 PM EST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0107 AM HEAVY SNOW LEOMINSTER 42.52N 71.77W
01/18/2010 U0.0 INCH WORCESTER MA AMATEUR RADIO

WIRES DOWN DUE TO SNOW ACCUMULATION

0210 AM HEAVY SNOW WHATELY 42.45N 72.62W
01/18/2010 U0.0 INCH FRANKLIN MA AMATEUR RADIO

WIRES DOWN NEAR ALLEN BROS. LUMBER YARD DUE TO SNOW
ACCUMULATION

0331 AM HEAVY SNOW GROVELAND 42.75N 71.03W
01/18/2010 U0.0 INCH ESSEX MA AMATEUR RADIO

WIRES DOWN.

0400 AM NON-TSTM WND DMG HOLBROOK 42.15N 71.01W
01/18/2010 NORFOLK MA AMATEUR RADIO

PWR OUTAGE WIRES DOWN ON LEATHERCHIP RD

0435 AM HEAVY SNOW NORTH ANDOVER 42.70N 71.12W
01/18/2010 U0.0 INCH ESSEX MA AMATEUR RADIO

WIRES DOWN ON HIGH STREET.

0452 AM NON-TSTM WND DMG DEDHAM 42.25N 71.18W
01/18/2010 NORFOLK MA AMATEUR RADIO

WIRES DOWN ON COLBURN STREET.

0455 AM NON-TSTM WND DMG NATICK 42.28N 71.35W
01/18/2010 MIDDLESEX MA AMATEUR RADIO

WIRES AND BRANCHES DOWN.

0826 AM NON-TSTM WND DMG DANVERS 42.57N 70.95W
01/18/2010 ESSEX MA AMATEUR RADIO

LARGE BRANCH DOWN ON SYLVAN ST

0915 AM NON-TSTM WND DMG PEABODY 42.53N 70.97W
01/18/2010 ESSEX MA AMATEUR RADIO

WIRES DOWN ON CAR ON LONGMEADOW RD

1134 AM NON-TSTM WND DMG STONEHAM 42.47N 71.10W
01/18/2010 MIDDLESEX MA AMATEUR RADIO

WIRES DOWN ON FRANKLIN ST STREET CLOSED

&&

$$

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KBOX [181711]: Preliminary Local Storm Report...summary

NWUS51 KBOX 181711
LSRBOX

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE TAUNTON MA
1211 PM EST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0107 AM HEAVY SNOW LEOMINSTER 42.52N 71.77W
01/18/2010 U0.0 INCH WORCESTER MA AMATEUR RADIO

WIRES DOWN DUE TO SNOW ACCUMULATION

0210 AM HEAVY SNOW WHATELY 42.45N 72.62W
01/18/2010 U0.0 INCH FRANKLIN MA AMATEUR RADIO

WIRES DOWN NEAR ALLEN BROS. LUMBER YARD DUE TO SNOW
ACCUMULATION

0331 AM HEAVY SNOW GROVELAND 42.75N 71.03W
01/18/2010 U0.0 INCH ESSEX MA AMATEUR RADIO

WIRES DOWN.

0400 AM NON-TSTM WND DMG HOLBROOK 42.15N 71.01W
01/18/2010 NORFOLK MA AMATEUR RADIO

PWR OUTAGE WIRES DOWN ON LEATHERCHIP RD

0435 AM HEAVY SNOW NORTH ANDOVER 42.70N 71.12W
01/18/2010 U0.0 INCH ESSEX MA AMATEUR RADIO

WIRES DOWN ON HIGH STREET.

0452 AM NON-TSTM WND DMG DEDHAM 42.25N 71.18W
01/18/2010 NORFOLK MA AMATEUR RADIO

WIRES DOWN ON COLBURN STREET.

0455 AM NON-TSTM WND DMG NATICK 42.28N 71.35W
01/18/2010 MIDDLESEX MA AMATEUR RADIO

WIRES AND BRANCHES DOWN.

0826 AM NON-TSTM WND DMG DANVERS 42.57N 70.95W
01/18/2010 ESSEX MA AMATEUR RADIO

LARGE BRANCH DOWN ON SYLVAN ST

0915 AM NON-TSTM WND DMG PEABODY 42.53N 70.97W
01/18/2010 ESSEX MA AMATEUR RADIO

WIRES DOWN ON CAR ON LONGMEADOW RD

1134 AM NON-TSTM WND DMG STONEHAM 42.47N 71.10W
01/18/2010 MIDDLESEX MA AMATEUR RADIO

WIRES DOWN ON FRANKLIN ST STREET CLOSED

&&

$$

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KHNX [181649]: Preliminary Local Storm Report

NWUS56 KHNX 181649
LSRHNX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY CA
849 AM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0713 AM NON-TSTM WND GST 3 SSE GRAPEVINE 34.90N 118.90W
01/18/2010 M84.00 MPH KERN CA MESONET

GRAPEVINE PEAK RAWS...ELEV 4647 FT

0800 AM NON-TSTM WND DMG TEHACHAPI 35.13N 118.44W
01/18/2010 KERN CA CO-OP OBSERVER

TEHACHAPI AIRPORT WIND DAMAGE 20X14 FOOT HANGER DOOR
BLOWN DOWN. 4FT DIAMETER TREE BLOWN DOWN ALONG WITH
NUMEROUS SMALLER TREES.

0826 AM NON-TSTM WND DMG 6 W TEHACHAPI 35.13N 118.55W
01/18/2010 KERN CA BROADCAST MEDIA

SHINGLES BLOWN OFF A ROOF IN STALLION SPRINGS.

&&

$$

MVAS

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KMFR [181638]: Preliminary Local Storm Report

NWUS56 KMFR 181638
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
838 AM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0836 AM HEAVY RAIN 5 WSW WILDERVILLE 42.36N 123.56W
01/18/2010 M0.50 INCH JOSEPHINE OR TRAINED SPOTTER

TOTAL FROM 5 PM TO 6 AM PST.

&&

$$

DW

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KMFR [181628]: Preliminary Local Storm Report

NWUS56 KMFR 181628
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
828 AM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0659 AM HEAVY RAIN W DUNSMUIR 41.23N 122.27W
01/18/2010 M2.14 INCH SISKIYOU CA TRAINED SPOTTER

24 HOUR TOTAL ENDING AT 18/0800 PST.

&&

$$

STOCKTON

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 181559
SWODY1
SPC AC 181557

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0957 AM CST MON JAN 18 2010

VALID 181630Z - 191200Z

...THERE IS A SLGT RISK OF SVR TSTMS OVER CENTRAL CA...

...CA...
ACTIVE WEATHER PATTERN WILL CONTINUE ACROSS THE WEST COAST TODAY
WITH A SERIES OF POTENT SYSTEMS APPROACHING THE REGION. LEADING
IMPULSE APPEARS TO BE WEAKENING/SPLITTING AS IT APPROACHES CA THIS
MORNING. PRECEDING MOIST PLUME WILL MAINTAIN ENHANCED QPF AND
CLOUDS OVER MUCH OF CA THROUGH THE DAY LIMITING HEATING AND
POTENTIAL INSTABILITY AS PORTION OF THIS IMPULSE PROGRESSES EWD
ACROSS THE SIERRAS. HOWEVER...REGION WILL REMAIN WITHIN FAVORABLE
EXIT REGION OF ENHANCED MID/UPPER LEVEL JET AS 100-150 KT H25 SPEED
MAX NOSES INTO FAR SRN CA/NRN BAJA REGION BY THE END OF THE PERIOD.

SMALL POCKETS OF WEAK INSTABILITY MAY EVOLVE INLAND INTO THE
INTERIOR VALLEYS OF CA THIS AFTERNOON...AND ALONG AND WEST OF THE
COASTAL RANGES WHERE SOME CLEARING MAY OCCUR IN WAKE OF LEADING
SYSTEM. THIS SHOULD PROVE FAVORABLE FOR A FEW TSTMS WITHIN BROADER
PRECIPITATION SHIELD. SHEAR WILL REMAIN QUITE STRONG AND MORE THAN
ADEQUATE FOR ORGANIZATION INTO SMALL LINES AND PERHAPS TRANSIENT LOW
LEVEL ROTATION IN STRONGER LOW TOPPED STORMS NEAR THE COAST.
ALTHOUGH...FORECAST SOUNDINGS INDICATE THAT NEAR MOIST ADIABATIC
THERMODYNAMIC PROFILES WILL REMAIN PREVALENT ACROSS THE AREA WHICH
WILL LIMIT INSTABILITY AND OVERALL POTENTIAL/COVERAGE OF STRONG TO
SEVERE TSTMS. THE THREAT OF AN ISOLATED DAMAGING WIND GUST AND/OR
ISOLATED TORNADO MAY ACCOMPANY ANY PERSISTENT/ORGANIZED UPDRAFT.
LATER TONIGHT...COOLING MID LEVELS AND MORE OPEN CELLULAR
DEVELOPMENT SHOULD INCREASE POTENTIAL FOR HAIL IN ISOLATED CORES
NEAR THE CENTRAL CA COAST AS NEXT IMPULSE APPROACHES.

..EVANS.. 01/18/2010

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KBOI [181433]: Preliminary Local Storm Report

NWUS55 KBOI 181433
LSRBOI

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE ID
733 AM MST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0731 AM SNOW 2 N PINE 43.50N 115.32W
01/18/2010 M7.0 INCH ELMORE ID TRAINED SPOTTER

7 INCHES NEW SNOW SINCE 10 PM ON 01/17.

0731 AM SNOW 12 NE BOISE 43.73N 116.06W
01/18/2010 E2.0 INCH BOISE ID PUBLIC

BOGUS BASIN SNOWSTAKE REPORTED 2 INCHES OF NEW SNOW SINCE
5 PM ON 01/17.

&&

$$

MTHIMMES

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KPQR [181327]: Preliminary Local Storm Report

NWUS56 KPQR 181327
LSRPQR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PORTLAND OR
527 AM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0212 AM NON-TSTM WND GST ASTORIA 46.19N 123.82W
01/18/2010 M60.00 MPH CLATSOP OR OTHER FEDERAL

SUSTAINED WIND 29 MPH AT TONGUE POINT.

&&

$$

MHIGA

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KPQR [181321]: Preliminary Local Storm Report

NWUS56 KPQR 181321
LSRPQR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PORTLAND OR
521 AM PST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

1000 PM NON-TSTM WND GST FLORENCE 43.99N 124.10W
01/17/2010 M76.00 MPH LANE OR C-MAN STATION

SUSTAINED WIND 51 MPH.

1004 PM NON-TSTM WND GST NEWPORT 44.63N 124.05W
01/17/2010 M72.00 MPH LINCOLN OR MESONET

SUSTAIN WIND 55 MPH AT YAQUINA BAY BRIDGE.

1045 PM NON-TSTM WND GST LINCOLN CITY 44.97N 124.01W
01/17/2010 M59.00 MPH LINCOLN OR MESONET

1046 PM NON-TSTM WND GST FLORENCE 43.99N 124.10W
01/17/2010 M64.00 MPH LANE OR C-MAN STATION

SIUSLAW JETTY.

1055 PM NON-TSTM WND GST CAPE MEARES 45.49N 123.97W
01/17/2010 M83.00 MPH TILLAMOOK OR AMATEUR RADIO

1100 PM NON-TSTM WND GST NEWPORT 44.63N 124.05W
01/17/2010 M68.00 MPH LINCOLN OR C-MAN STATION

SUSTAINED WIND 46 MPH.

1109 PM NON-TSTM WND GST PACIFIC CITY 45.20N 123.96W
01/17/2010 M69.00 MPH TILLAMOOK OR MESONET

SUSTAINED WIND 45 MPH.

1109 PM NON-TSTM WND GST NEWPORT 44.63N 124.05W
01/17/2010 M60.00 MPH LINCOLN OR AWOS

SUSTAINED WIND 40 MPH.

1115 PM NON-TSTM WND GST LINCOLN CITY 44.97N 124.01W
01/17/2010 M79.00 MPH LINCOLN OR AMATEUR RADIO

SUSTAINED WIND 34 MPH.

1135 PM NON-TSTM WND GST GARIBALDI 45.56N 123.91W
01/17/2010 M84.00 MPH TILLAMOOK OR OFFICIAL NWS OBS

SUSTAINED WIND 59 MPH.

1135 PM NON-TSTM WND GST FOREST GROVE 45.52N 123.10W
01/17/2010 M61.00 MPH WASHINGTON OR TRAINED SPOTTER

1200 AM NON-TSTM WND GST ROCKAWAY BEACH 45.62N 123.94W
01/18/2010 M73.00 MPH TILLAMOOK OR AMATEUR RADIO

1200 AM NON-TSTM WND GST GARIBALDI 45.56N 123.91W
01/18/2010 M83.00 MPH TILLAMOOK OR OTHER FEDERAL

SUSTAINED WIND 64 MPH.

1250 AM NON-TSTM WND GST CAPE DISAPPOINTMENT 46.27N 124.08W
01/18/2010 M75.00 MPH PACIFIC WA COAST GUARD

SUSTAINED WIND 59 MPH.

0205 AM NON-TSTM WND GST ASTORIA 46.19N 123.82W
01/18/2010 M60.00 MPH CLATSOP OR ASOS

SUSTAINED WIND 40 MPH.

0300 AM NON-TSTM WND GST CLATSOP SPIT 46.22N 124.00W
01/18/2010 M77.00 MPH CLATSOP OR OFFICIAL NWS OBS

SUSTAINED WIND 58 MPH.

&&

$$

MHIGA

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 181300
SWODY1
SPC AC 181258

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0658 AM CST MON JAN 18 2010

VALID 181300Z - 191200Z

...THERE IS A SLGT RISK OF SVR TSTMS OVER PARTS OF CA...

...SYNOPSIS...
THE FIRST IN AN EXTENDED SERIES OF STRONG SHORTWAVE IMPULSES IN FAST
ZONAL JET OVER THE CNTRL AND ERN PACIFIC WILL SWEEP E ACROSS CA AND
ORE LATER TODAY/TONIGHT AS UPSTREAM SYSTEM NOW NEAR 150W CONTINUES
ESE TO 130W. AT THE SFC...POTENT LOW ASSOCIATED WITH LEAD
IMPULSE...NOW NEAR 40N/132W...SHOULD ARC NE TO OFF THE ORE/WA CST BY
EARLY TUE...WITH FURTHER DEEPENING LIKELY. MAIN FRONTAL BAND WITH
THE LOW SHOULD MOVE ACROSS SW ORE...AND NRN/CNTRL CA THIS AFTN...AND
ACROSS THE REMAINDER OF ORE AND CA THIS EVE.

...CA...
CURRENT SATELLITE DATA SUGGEST THAT LEAD PACIFIC SHORTWAVE TROUGH IS
BEGINNING TO SPLIT...MORE OR LESS AS FCST BY THE ECMWF/GFS. SRN
MEMBER OF SPLIT WILL DRIVE ESE INTO CNTRL CA LATER TODAY... WHILE
NRN PART MOVES ENE INTO NRN CA/WRN ORE. WARM CONVEYOR/ FRONTAL RAIN
BAND WITH SRN MEMBER WILL OVERSPREAD NRN AND CNTRL CA THIS
AFTN...AND SRN CA BY EVE. ALTHOUGH THERMODYNAMIC PROFILES WILL BE
CLOSE TO MOIST ADIABATIC WITHIN THE BAND...COMBINATION OF STRONG UVV
AND FAIRLY RICH MOISTURE MAY SUPPORT EMBEDDED CONVECTION AND A FEW
TSTMS. GIVEN STRONG/VERTICALLY-VEERING WIND PROFILES...INTERMITTENT
ROTATING CELLS/LEWP STRUCTURES COULD EVOLVE...YIELDING A THREAT FOR
ISOLD STRONG WIND GUSTS AND/OR A BRIEF TORNADO.

IN THE WAKE OF THE FRONTAL BAND...POTENTIAL WILL EXIST FOR THE
DEVELOPMENT OF SCTD CONVECTION/STORMS AS UPR COLD POCKET /WITH
TEMPERATURES AOB MINUS 22C/ SWEEPS INLAND ACROSS CNTRL CA LATE IN
THE DAY. MID LVL COOLING/ASCENT ATOP BOUNDARY LAYER LEFT MOISTENED
BY EARLIER RAINS COULD SUPPORT STORMS WITH MARGINALLY SVR HAIL ALONG
THE CST...OVER THE CSTL RANGES...AND E ACROSS THE SACRAMENTO AND SAN
JOAQUIN VLYS INTO TONIGHT. WIND PROFILES WILL BE FAVORABLE FOR
STORM ROTATION IN AREAS WHERE INSTABILITY/ CONVERGENCE ARE
SUFFICIENT FOR UPDRAFT SUSTENANCE. THUS...A CONDITIONAL THREAT WILL
EXIST FOR STRONG/ISOLD SVR WIND GUSTS...AND PERHAPS A TORNADO OR
TWO...DESPITE ONSET OF NIGHTFALL.

..CORFIDI.. 01/18/2010

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KTSA [181251]: Preliminary Local Storm Report

NWUS54 KTSA 181251
LSRTSA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
651 AM CST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0120 AM DENSE FOG OZARK 35.49N 93.83W
01/18/2010 FRANKLIN AR EMERGENCY MNGR

FREEZING FOG HAS CAUSED SOME SLICK SPOTS ON BRIDGES AND
OVERPASSES IN OZARK.

&&

$$

MEB

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KBOX [181226]: Preliminary Local Storm Report...corrected

NWUS51 KBOX 181226
LSRBOX

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE TAUNTON MA
725 AM EST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0107 AM HEAVY SNOW LEOMINSTER 42.52N 71.77W
01/18/2010 U0.0 INCH WORCESTER MA AMATEUR RADIO

WIRES DOWN DUE TO SNOW ACCUMULATION

0210 AM HEAVY SNOW WHATELY 42.45N 72.62W
01/18/2010 U0.0 INCH FRANKLIN MA AMATEUR RADIO

WIRES DOWN NEAR ALLEN BROS. LUMBER YARD DUE TO SNOW
ACCUMULATION

0331 AM HEAVY SNOW GROVELAND 42.75N 71.03W
01/18/2010 U0.0 INCH ESSEX MA AMATEUR RADIO

WIRES DOWN.

0435 AM HEAVY SNOW NORTH ANDOVER 42.70N 71.12W
01/18/2010 U0.0 INCH COOS NH AMATEUR RADIO

WIRES DOWN ON HIGH STREET.

0452 AM NON-TSTM WND DMG DEDHAM 42.25N 71.18W
01/18/2010 NORFOLK MA AMATEUR RADIO

WIRES DOWN ON COLBURN STREET.

0455 AM NON-TSTM WND DMG NATICK 42.28N 71.35W
01/18/2010 MIDDLESEX MA AMATEUR RADIO

WIRES AND BRANCHES DOWN.

&&

$$

FNOCERA

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KBOX [181044]: Preliminary Local Storm Report...summary

NWUS51 KBOX 181044
LSRBOX

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE TAUNTON MA
544 AM EST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0107 AM HEAVY SNOW LEOMINSTER 42.52N 71.77W
01/18/2010 U0.0 INCH WORCESTER MA AMATEUR RADIO

WIRES DOWN DUE TO SNOW ACCUMULATION

0210 AM HEAVY SNOW WHATELY 42.45N 72.62W
01/18/2010 U0.0 INCH FRANKLIN MA AMATEUR RADIO

WIRES DOWN NEAR ALLEN BROS. LUMBER YARD DUE TO SNOW
ACCUMULATION

0331 AM HEAVY SNOW GROVELAND 42.75N 71.03W
01/18/2010 U0.0 INCH OXFORD ME AMATEUR RADIO

WIRES DOWN.

0435 AM HEAVY SNOW NORTH ANDOVER 42.70N 71.12W
01/18/2010 U0.0 INCH COOS NH AMATEUR RADIO

WIRES DOWN ON HIGH STREET.

0452 AM NON-TSTM WND DMG DEDHAM 42.25N 71.18W
01/18/2010 NORFOLK MA AMATEUR RADIO

WIRES DOWN ON COLBURN STREET.

0455 AM NON-TSTM WND DMG NATICK 42.28N 71.35W
01/18/2010 MIDDLESEX MA AMATEUR RADIO

WIRES AND BRANCHES DOWN.

&&

$$

FNOCERA

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DAY48SVR: Nws Storm Prediction Center Norman Ok

ACUS48 KWNS 180915
SWOD48
SPC AC 180914

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0314 AM CST MON JAN 18 2010

VALID 211200Z - 261200Z

...DISCUSSION...

DAY 4...MODEL CONSENSUS IS THAT SRN STREAM SHORTWAVE TROUGH WILL
EJECT ENEWD THROUGH THE TN VALLEY AND SERN U.S. THURSDAY...BUT ECMWF
AND GFS SOLUTIONS HAVE TRENDED FARTHER NORTH COMPARED TO 24 HOURS
AGO. DESPITE THIS TREND...WILL MAINTAIN SEVERE PROBABILITIES ACROSS
NRN FL INTO SRN GA. PARTIALLY MODIFIED GULF AIR WILL ADVECT NEWD
INTO THIS REGION AND CONTRIBUTE TO AT LEAST MODEST INSTABILITY. THE
MOIST AXIS WILL BE CO-LOCATED WITH STRONG DEEP LAYER WINDS AND
VERTICAL SHEAR ATTENDING THE EJECTING UPPER TROUGH. STORMS
DEVELOPING EWD THROUGH THIS AREA MAY BE ROOTED CLOSE ENOUGH TO THE
SURFACE TO POSE A SEVERE RISK.

DAY 6 AND 7...ECMWF ENSEMBLE MEANS...GFS AND MREF MEMBERS HAVE
CONVERGED ON A SIMILAR SOLUTION AND MOVE THE LARGE UPPER TROUGH OVER
THE ERN PACIFIC EWD INTO THE PLAINS BY SATURDAY. SEVERAL IMPULSES
WILL ROTATE THROUGH THE UPPER LOW AS IT MOVES EAST. A LARGE CYCLONE
WILL DEVELOP OVER THE PLAINS IN ASSOCIATION WITH THIS FEATURE
SATURDAY BEFORE SHIFTING EWD INTO THE MS VALLEY SUNDAY. INTRUSION OF
CP AIR IN WAKE OF EJECTING IMPULSE THURSDAY WILL NOT EXTEND FAR INTO
THE GULF. AS A RESULT...RICHER LOW LEVEL MOISTURE WILL BE POISED TO
ADVECT NWD AS CYCLONE DEEPENS...THOUGH DURATION OF THE MOIST
ADVECTION WILL NOT BE OPTIMAL. A FORCED BAND OF STORMS WILL LIKELY
DEVELOP INITIALLY OVER THE SRN AND CNTRL PLAINS INTO THE LOWER-MID
MS VALLEY SATURDAY. ACTIVITY WILL SUBSEQUENTLY SHIFT EWD THROUGH THE
TN VALLEY AND SERN STATES SUNDAY. UNCERTAINTY REMAINS REGARDING
EVOLUTION OF THERMODYNAMIC ENVIRONMENT. HOWEVER...STORMS WILL BE
EMBEDDED WITHIN STRONG VERTICAL SHEAR AND SUFFICIENT MOISTURE MAY
ADVECT NWD TO SUPPORT SURFACE BASED STORMS AND A SEVERE THREAT
DURING THIS TIME.

..DIAL.. 01/18/2010

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KBOX [180753]: Preliminary Local Storm Report

NWUS51 KBOX 180753
LSRBOX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAUNTON MA
253 AM EST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0107 AM HEAVY SNOW LEOMINSTER 42.52N 71.77W
01/18/2010 U0.0 INCH WORCESTER MA AMATEUR RADIO

WIRES DOWN DUE TO SNOW ACCUMULATION

0210 AM HEAVY SNOW WHATELY 42.45N 72.62W
01/18/2010 U0.0 INCH FRANKLIN MA AMATEUR RADIO

WIRES DOWN NEAR ALLEN BROS. LUMBER YARD DUE TO SNOW
ACCUMULATION

&&

$$

BELK

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KSEW [180753]: Preliminary Local Storm Report

NWUS56 KSEW 180753
LSRSEW

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
1153 PM PST SUN JAN 17 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

1152 PM NON-TSTM WND GST WSW GLENOMA 46.51N 122.16W
01/17/2010 E45 MPH LEWIS WA TRAINED SPOTTER

POWER OUTAGES

&&

$$

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DAY3SVR: Nws Storm Prediction Center Norman Ok

ACUS03 KWNS 180732
SWODY3
SPC AC 180731

DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0131 AM CST MON JAN 18 2010

VALID 201200Z - 211200Z

...THERE IS A SLGT RISK OF SVR TSTMS FROM SERN TX THROUGH THE LOWER
MS VALLEY AND SRN PARTS OF THE GULF COAST STATES...

...SYNOPSIS...

BOTH THE GFS AND ECMWF HAVE TRENDED SLIGHTLY FARTHER NORTH WITH SRN
STREAM SHORTWAVE TROUGH THAT WILL MOVE THROUGH AND LOWER MS VALLEY
WEDNESDAY AFTERNOON AND OVERNIGHT. NAM AND NAM-KF MODELS REMAIN THE
FARTHEST SOUTH. ATTENDANT SURFACE LOW IS FORECAST TO DEVELOP EWD
FROM THE SRN PLAINS INTO THE LOWER MS VALLEY. THIS FEATURE WILL
REACH THE TN VALLEY LATE WEDNESDAY NIGHT. SYNOPTIC WARM FRONT WILL
LIKELY DEVELOP NWD INTO THE TN VALLEY...BUT THE COASTAL FRONT WILL
PROBABLY ADVANCE TO JUST OFF THE GULF COAST.

...SE TX INTO THE LOWER MS VALLEY AND CNTRL GULF COASTAL AREA...

SWLY LOW-LEVEL JET WILL STRENGTHEN FROM ERN TX INTO THE LOWER MS
VALLEY WITHIN UPPER DIVERGENCE ZONE JUST DOWNSTREAM OF ADVANCING
SHORTWAVE TROUGH. THIS FEATURE WILL SHIFT EWD INTO THE SERN STATES
WEDNESDAY NIGHT. PARTIALLY MODIFIED GULF AIR WILL BE TRANSPORTED
NEWD WITH LOW-MID 60F DEWPOINTS FROM SERN TX EWD TO SRN PARTS OF THE
GULF COASTAL STATES AND UPPER 50F TO NEAR 60F FARTHER NORTH. THE
RICH GULF MOISTURE WILL PROBABLY REMAIN JUST OFFSHORE SOUTH OF
COASTAL FRONT. HOWEVER...THE NWD ADVECTION OF PARTIALLY MODIFIED
GULF AIR SHOULD BE SUFFICIENT FOR AT LEAST MODEST DESTABILIZATION
GIVEN COLD TEMPERATURES ALOFT WITH -14C TO -15C AT 500 MB.
DEVELOPMENT OF CLOUDS AND CONVECTION WITHIN WARM ADVECTION REGIME
WILL PROBABLY LIMIT MUCAPE TO AOB 1000 J/KG.

THUNDERSTORMS WILL LIKELY DEVELOP EARLY WEDNESDAY WITHIN ZONE OF
ISENTROPIC LIFT AND WARM ADVECTION FROM ERN TX INTO THE LOWER MS
VALLEY. ACTIVITY WILL SHIFT EWD INTO THE SERN STATES WEDNESDAY NIGHT
WITH POSSIBLE UPSCALE GROWTH TO AN MCS. MUCH OF THE CONVECTION WILL
PROBABLY REMAIN AT LEAST SLIGHTLY ELEVATED GIVEN LIMITED INSOLATION
POTENTIAL AND EARLY ONSET OF PRECIPITATION WITHIN AN INITIALLY
STABLE BOUNDARY LAYER. HOWEVER...STORMS DEVELOPING CLOSER TO THE
GULF COAST MAY BECOME ROOTED NEAR THE SURFACE WITH CONTINUED INFLUX
OF GULF MOISTURE. HODOGRAPH SIZE AND STRONG DEEP LAYER SHEAR WILL BE
FAVORABLE FOR SUPERCELLS AND BOWING SEGMENTS WITH A THREAT OF
DAMAGING WIND AND ISOLATED TORNADOES. MORE THAN 15% SEVERE
PROBABILITIES DO NOT APPEAR JUSTIFIED AT THIS TIME GIVEN THE
POTENTIAL THERMODYNAMIC LIMITING FACTORS.

...NRN AND CNTRL CA...

ANOTHER IN A SERIES OF IMPULSES WILL MOVE EWD INTO CA ACCOMPANIED BY
STEEP LAPSE RATES. SUFFICIENT INSTABILITY MIGHT DEVELOP TO SUPPORT A
THREAT OF GUSTY WINDS AND SMALL HAIL...ESPECIALLY ALONG COASTAL
REGIONS.

..DIAL.. 01/18/2010

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KTSA [180724]: Preliminary Local Storm Report

NWUS54 KTSA 180724
LSRTSA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
124 AM CST MON JAN 18 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0120 AM DENSE FOG 2 WSW BENTONVILLE 36.36N 94.24W
01/18/2010 BENTON AR PUBLIC

VISIBILITY 100 FEET AT BEST.

&&

$$

MEB

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KREV [180644]: Preliminary Local Storm Report

NWUS55 KREV 180644
LSRREV

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RENO NV
1044 PM PST SUN JAN 17 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0520 PM SNOW 4 W PROSSER CREEK RESER 39.37N 120.25W
01/17/2010 M5.0 INCH NEVADA CA TRAINED SPOTTER

5 INCHES NEW SNOWFALL SINCE 1200PM AT 6500 FT. CURRENTLY
28F, CALM WINDS.

1030 PM SNOW 2 NNE CRESCENT MILLS 40.12N 120.90W
01/17/2010 M1.0 INCH PLUMAS CA TRAINED SPOTTER

1 INCH OF SLUSHY SNOW. SNOWING HEAVYILY AT THIS TIME.
ELEVATION 3550 FT.

1037 PM SNOW 1 E SODA SPRINGS 39.32N 120.36W
01/17/2010 E8.0 INCH NEVADA CA MESONET

NEW SNOW SINCE 11 AM SUNDAY. FROM HMT-WEST PROJECT
AUTOMATED SENSOR AT NORDEN. APPROX 0.6 LIQUID EQUIV. ELEV
6890 FT.

&&

$$

CSMALLCO

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KSEW [180639]: Preliminary Local Storm Report

NWUS56 KSEW 180639
LSRSEW

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
1039 PM PST SUN JAN 17 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

1038 PM HIGH SUST WINDS 4 ENE VAIL 46.86N 122.58W
01/17/2010 M44 MPH THURSTON WA TRAINED SPOTTER

GUSTS 60

&&

$$

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KEKA [180610]: Preliminary Local Storm Report

NWUS56 KEKA 180610
LSREKA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EUREKA CA
1006 PM PST SUN JAN 17 2010

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0200 PM HIGH SUST WINDS ARCATA 40.87N 124.08W
01/17/2010 U0.00 MPH HUMBOLDT CA LAW ENFORCEMENT

13045 WEST END ROAD, LOW HANGING WIRES REPORTED

0200 PM HIGH SUST WINDS ARCATA 40.87N 124.08W
01/17/2010 U0.00 MPH HUMBOLDT CA LAW ENFORCEMENT

JACOBY CREEK RD AT ECHO LN, POWER LINES REPORTED DOWN

0200 PM HIGH SUST WINDS BRIDGEVILLE 40.47N 123.80W
01/17/2010 U0.00 MPH HUMBOLDT CA LAW ENFORCEMENT

HIGHWAY 36 AT MILE MARKER 9... TREES DOWN CROSSING THE
ROADWAY

0200 PM HIGH SUST WINDS MYRTLETOWN 40.79N 124.13W
01/17/2010 U0.00 MPH HUMBOLDT CA LAW ENFORCEMENT

3311 GLENWOOD ST. POWER LINE DOWN

0200 PM HIGH SUST WINDS FIELDBROOK 40.97N 124.03W
01/17/2010 U0.00 MPH HUMBOLDT CA LAW ENFORCEMENT

TREE DOWN ACROSS FIELDBROOK ROAD

0200 PM HIGH SUST WINDS 1 E ARCATA 40.87N 124.06W
01/17/2010 U0.00 MPH HUMBOLDT CA LAW ENFORCEMENT

TREES DOWN ACROSS HIGHWAY 299...ONE MILE EAST OF HIGHWAY
101

0200 PM HIGH SUST WINDS FIELDBROOK 40.97N 124.03W
01/17/2010 U0.00 MPH HUMBOLDT CA LAW ENFORCEMENT

TREES DOWN REPORTED JUST SOUTH OF ELIZABETH, AND AT 1291
AZALEA AVE NEAR FIELBROOK

0200 PM HIGH SUST WINDS CRESCENT CITY 41.75N 124.20W
01/17/2010 U0.00 MPH DEL NORTE CA LAW ENFORCEMENT

TREES AND POWER LINES DOWN REPORTED ACROSS LAKE EARL ROAD
JUST NORTH OF PELICAN BAY PRISON.

0200 PM HIGH SUST WINDS MIRANDA 40.23N 123.82W
01/17/2010 U0.00 MPH HUMBOLDT CA LAW ENFORCEMENT

HIGHWAY 254 NEAR MILE MARKER 42...TREES AND POWER LINES
DOWN

0200 PM HIGH SUST WINDS BLUE LAKE 40.88N 123.99W
01/17/2010 U0.00 MPH HUMBOLDT CA LAW ENFORCEMENT

BLUE LAKE BLVD...TREE DOWN COVERING THE ROADWAY

&&

$$

BLOEMER

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 180540
SWODY1
SPC AC 180538

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1138 PM CST SUN JAN 17 2010

VALID 181200Z - 191200Z

...NO SVR TSTM AREAS FORECAST...

....CALIFORNIA...
A WELL-DEVELOPED UPPER-LEVEL TROUGH WILL APPROACH CALIFORNIA TODAY.
AHEAD OF THE TROUGH...A LARGE AREA OF RAIN IS FORECAST TO SPREAD
INLAND ACROSS THE COAST OF NRN AND CNTRL CA THIS AFTERNOON. STRONG
LARGE-SCALE ASCENT AND MODERATE DEEP LAYER VERTICAL SHEAR COMBINED
WITH STEEP LAPSE RATES MAY BE ENOUGH FOR MARGINALLY SEVERE STORMS
CAPABLE OF HAIL AND STRONG GUSTY WINDS. THE GREATEST THREAT FOR HAIL
MAY EXIST IN THE SAN JOAQUIN VALLEY LATE THIS AFTERNOON AND EARLY
THIS EVENING AS THE UPPER-TROUGH CROSSES THE COAST WHERE FORECAST
SOUNDINGS SHOW THE STEEPEST MID-LEVEL LAPSE RATES.

FURTHER SOUTH ALONG THE SRN CA COAST...THE SRN END OF THE RAINBAND
SHOULD SPREAD INLAND DURING THE LATE AFTERNOON. THE MODELS SHOW
INSTABILITY MAXIMIZED JUST OFFSHORE BENEATH THE EXIT REGION OF A
POWERFUL MID-LEVEL JET. STRONG DEEP LAYER SHEAR ASSOCIATED WITH THE
JET MAY BE SUFFICIENT FOR A MARGINAL THREAT FOR DAMAGING WING GUSTS
WITH THE MORE INTENSE CELLS EMBEDDED IN THE RAIN BAND. IF A FEW
STORMS CAN REMAIN DISCRETE AS THE UPPER-LEVEL TROUGH APPROACHES LATE
THIS AFTERNOON...THEN A MARGINAL TORNADO THREAT WOULD ALSO BE
POSSIBLE.

..BROYLES.. 01/18/2010

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 180531
SWODY2
SPC AC 180530

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1130 PM CST SUN JAN 17 2010

VALID 191200Z - 201200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...

ACTIVE SRN STREAM WILL PERSIST WITH SEVERAL IMPULSES EMANATING FROM
THE STRONG SUBTROPICAL JET OVER THE ERN PACIFIC. ANOTHER IN A SERIES
OF SHORTWAVE TROUGHS WILL MOVE FROM THE WRN U.S. INTO THE SRN HIGH
PLAINS TUESDAY EVENING AND OVERNIGHT...REACHING THE MID MS VALLEY
TOWARD THE END OF THE PERIOD.

...ERN TX AND SERN OK THROUGH THE LOWER MS VALLEY...

MOISTURE RETURN FROM THE WRN GULF WILL BE UNDERWAY EARLY TUESDAY
OVER THE SRN PLAINS INTO THE LOWER MS VALLEY IN ASSOCIATION WITH
DEVELOPING LEE CYCLONE. UPPER DIVERGENCE ASSOCIATED WITH EJECTING
SHORTWAVE TROUGH SHOULD RESULT IN SOME DEEPENING OF THE LOW AS IT
DEVELOPS EWD INTO KS/OK. BOUNDARY LAYER MOISTURE OVER THE GULF HAS
BEEN SUPPRESSED BY RECENT FRONTAL INTRUSION. HOWEVER...LOW LEVEL
WINDS HAVE ALREADY RETURNED TO SLY OVER THE WRN GULF WITH MID 50S
DEWPOINTS INDICATED IN SRN TX AS OF SUNDAY EVENING. AXIS OF
PARTIALLY MODIFIED GULF AIR WITH LOW TO MID 60F DEWPOINTS SHOULD
RETURN NWD TO SRN-SERN TX WITH UPPER 50F TO 60F MORE LIKELY ACROSS
NERN TX. THIS MOISTURE WILL RETURN NWD BENEATH EWD ADVECTING PLUME
OF STEEPER LAPSE RATES RESULTING IN MUCAPE FROM 500-1000 J/KG.

SWLY LOW-LEVEL JET WILL STRENGTHEN WITH APPROACH OF THE IMPULSE.
POTENTIAL WILL EXIST FOR STORMS TO DEVELOP FROM ERN PARTS OF THE SRN
PLAINS INTO THE LOWER-MID MS VALLEY WITHIN DEVELOPING WARM ADVECTION
REGIME LATE TUESDAY NIGHT. ANY STORMS THAT FORM WILL PROBABLY REMAIN
ELEVATED ABOVE A STABLE BOUNDARY LAYER GIVEN THE EXPECTED LATE
INITIATION...AND ANY SEVERE THREAT WILL BE LIMITED TO MARGINALLY
SEVERE HAIL. NEWD TRAJECTORY OF SHORTWAVE TROUGH TOWARD KS AND
LIKELIHOOD OF A CAP WITHIN THE MORE UNSTABLE AIRMASS INDICATE THE
ZONE OF DEEPER ASCENT WILL PROBABLY REMAIN SOMEWHAT DISPLACED FROM
THE GREATER INSTABILITY. THESE FACTORS SUGGEST THUNDERSTORM COVERAGE
PRIOR TO 12Z WILL PROBABLY REMAIN LIMITED.

...SWRN CA THROUGH SWRN AZ...

ANOTHER IN A SERIES OF IMPULSES WILL MOVE THROUGH CA AND AZ LATE
TUESDAY AFTERNOON OR EVENING NORTH OF STRONG SUBTROPICAL JET. COLD
AIR ALOFT AND STEEP MID-LEVEL LAPSE RATES WILL CONTRIBUTE TO WEAK
INSTABILITY...MAINLY ALONG COASTAL CA AND INTO SWRN AZ WHERE ONSHORE
FLOW WILL MAINTAIN A MOISTER BOUNDARY LAYER. STRONG BULK SHEAR WILL
EXIST ALONG AND NORTH OF THE UPPER JET AXIS. AREAS OF PRECIPITATION
MAY STILL BE ONGOING EARLY TUESDAY FROM SRN CA INTO AZ IN
ASSOCIATION WITH EJECTING LEAD WAVE. MODEST DESTABILIZATION WILL BE
POSSIBLE IN WAKE OF THIS FEATURE. ADDITIONAL STORMS WILL LIKELY
DEVELOP AS SECONDARY IMPULSE APPROACHES DURING THE EVENING WITH A
MARGINAL THREAT FOR ISOLATED STRONG WIND GUSTS AND SMALL HAIL. WEAK
INSTABILITY WILL LIKELY REMAIN A LIMITING FACTOR FOR A MORE ROBUST
SEVERE THREAT.

..DIAL.. 01/18/2010

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