MESO: Mesoscale Discussion 2052

ACUS11 KWNS 210203
SWOMCD
SPC MCD 210202
CAZ000-210330-

MESOSCALE DISCUSSION 2052
NWS STORM PREDICTION CENTER NORMAN OK
0802 PM CST SAT NOV 20 2010

AREAS AFFECTED...CENTRAL CA COASTAL REGION

CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY

VALID 210202Z - 210330Z

SOME INCREASE IN CONVECTIVE INTENSITY OBSERVED OVER THE PAST HOUR OR
SO SUGGESTS A SLIGHT ENHANCEMENT OF SEVERE THREAT. THREAT REMAINS
QUITE LIMITED HOWEVER...AND WW IS NOT ANTICIPATED.

LATEST RADAR IMAGERY SHOWS AN INCREASE IN CONVECTION ACROSS CENTRAL
CA AND JUST OFFSHORE...FROM THE SFO BAY REGION SWD. BAND OF
CONVECTION ALONG THE FRONT HAS ORGANIZED SLIGHTLY...WHILE
PRE-FRONTAL CELLULAR CONVECTION ALSO HAS INCREASED IN BOTH COVERAGE
AND INTENSITY...WITH STRONGER CELLS SHOWING OCCASIONAL WEAK
ROTATION. THE CONVECTIVE INCREASE APPEARS TO BE TIED TO A SLIGHT
INCREASE IN INSTABILITY...AS SOME COOLING AT MID LEVELS OVERSPREADS
CENTRAL CA IN CONJUNCTION WITH THE SEWD MOTION OF THE MAIN UPPER
LOW.

WITH BOTH LOW-LEVEL AND DEEP-LAYER SHEAR PROFILES MORE THAN
SUFFICIENT FOR ORGANIZED/SEVERE STORMS...ANY ADDITIONAL INCREASE IN
INSTABILITY AND ASSOCIATED CONVECTIVE UPDRAFT INTENSITY BEARS
WATCHING. ATTM HOWEVER...EXPECT SEVERE THREAT TO REMAIN
INSUFFICIENT TO WARRANT WW ISSUANCE...BUT A LOCALLY-DAMAGING GUST OR
EVEN A VERY BRIEF TORNADO CANNOT BE RULED OUT.

..GOSS.. 11/21/2010

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

ATTN...WFO...HNX...STO...MTR...

LAT...LON 36632188 36962238 37502255 38632165 38082089 37332086
36832116 36632188

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KMFR [210150]: Preliminary Local Storm Report

NWUS56 KMFR 210150
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
550 PM PST SAT NOV 20 2010

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

0428 PM HEAVY SNOW SSE MOUNT SHASTA 41.32N 122.31W
11/20/2010 M11.5 INCH SISKIYOU CA TRAINED SPOTTER

24 HOUR TOTAL ENDING AT 1745 PST. 8.5 INCHES FELL SINCE
1100 PST.

&&

$$

STOCKTON

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KLKN [210125]: Preliminary Local Storm Report

NWUS55 KLKN 210125
LSRLKN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ELKO NV
525 PM PST SAT NOV 20 2010

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

1000 AM SNOW TUSCARORA 41.32N 116.22W
11/20/2010 E7.5 INCH ELKO NV CO-OP OBSERVER

0330 PM SNOW AUSTIN 39.48N 117.07W
11/20/2010 M6.0 INCH LANDER NV CO-OP OBSERVER

0512 PM SNOW 12 N PARADISE VALLEY 41.67N 117.57W
11/20/2010 M8.0 INCH HUMBOLDT NV MESONET

0512 PM SNOW MCDERMITT 41.99N 117.71W
11/20/2010 M6.0 INCH HUMBOLDT NV CO-OP OBSERVER

0512 PM SNOW 20 NE TUSCARORA 41.55N 116.01W
11/20/2010 M8.0 INCH ELKO NV MESONET

0515 PM SNOW 8 N RUBY VALLEY 40.89N 115.20W
11/20/2010 M11.0 INCH ELKO NV MESONET

0515 PM SNOW 9 SE LAMOILLE 40.65N 115.38W
11/20/2010 M11.0 INCH ELKO NV MESONET

0515 PM SNOW 8 ESE JIGGS 40.38N 115.53W
11/20/2010 M8.0 INCH ELKO NV MESONET

0515 PM SNOW 10 ESE MCGILL 39.32N 114.62W
11/20/2010 M9.0 INCH WHITE PINE NV MESONET

&&

$$

MZ

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KMFR [210111]: Preliminary Local Storm Report

NWUS56 KMFR 210111
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
511 PM PST SAT NOV 20 2010

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

0428 PM HEAVY SNOW 6 NW MOUNT SHASTA 41.38N 122.39W
11/20/2010 M9.0 INCH SISKIYOU CA TRAINED SPOTTER

THE BULK OF THE SNOW FELL FROM 1100 TO 1700 PST. STILL
COMING DOWN.

&&

$$

STOCKTON

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KMFR [210100]: Preliminary Local Storm Report

NWUS56 KMFR 210100
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
500 PM PST SAT NOV 20 2010

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

0500 PM HEAVY SNOW ESE MOUNT SHASTA 41.32N 122.31W
11/20/2010 M7.0 INCH SISKIYOU CA TRAINED SPOTTER

ACCUMULATIVE TOTAL FROM 7AM THIS MORNING TO 5PM

&&

$$

BUNKER

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KVEF [210055]: Preliminary Local Storm Report

NWUS55 KVEF 210055
LSRVEF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
455 PM PST SAT NOV 20 2010

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

0400 AM HEAVY SNOW ASPENDELL 37.23N 118.58W
11/20/2010 M12.0 INCH INYO CA TRAINED SPOTTER

TRAINED SPOTTER REPORTS 12 INCHES OF SNOW FELL BETWEEN 4
AM AND NOON ON SATURDAY.

&&

$$

JGG

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 210040
SWODY1
SPC AC 210038

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0638 PM CST SAT NOV 20 2010

VALID 210100Z - 211200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
LARGE TROUGH OVER THE WRN U.S. WILL CONTINUE TO SHIFT SLOWLY EWD
WITH TIME...WITH SOME AMPLIFICATION OF DOWNSTREAM RIDGING TO OCCUR
ACROSS THE ERN HALF OF THE U.S. THROUGH THE PERIOD.

STABLE AIR -- AND ASSOCIATED LACK OF DEEP CONVECTION -- WILL PREVAIL
ACROSS MOST OF THE COUNTRY THROUGH 21/12Z...WITH AN EXCEPTION OVER
PARTS OF CA AND VICINITY. HERE...COOLING ALOFT ASSOCIATED WITH A
SEWD-MOVING UPPER LOW EMBEDDED WITHIN THE LARGER-SCALE TROUGH WILL
CONTINUE TO PROVIDE VERY MODEST BUOYANCY -- AND ASSOCIATED THREAT
FOR OCCASIONAL LIGHTNING -- OVER CENTRAL CA AND VICINITY.

DEEP-LAYER WIND FIELD IS QUITE FAVORABLE FOR ORGANIZED STORMS ACROSS
PORTIONS OF CENTRAL CA THIS EVENING. HOWEVER...GIVEN BUOYANCY
LIMITATIONS...VERY LITTLE LIKELIHOOD FOR APPRECIABLE SEVERE
POTENTIAL IS EVIDENT. A BRIEF STRONGER CELL OR TWO MAY AFFECT AREAS
FROM THE SAN FRANSISCO BAY REGION INLAND TO PARTS OF THE CENTRAL
VALLEY...BUT ANY SEVERE POTENTIAL APPEARS LESS THAN MINIMUM 2%/5%
THRESHOLDS.

..GOSS.. 11/21/2010

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KMFR [210032]: Preliminary Local Storm Report

NWUS56 KMFR 210032
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
432 PM PST SAT NOV 20 2010

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

0400 PM HEAVY SNOW 4 SW WEED 41.37N 122.42W
11/20/2010 M12.0 INCH SISKIYOU CA TRAINED SPOTTER

8 HOUR ACCUMULATION ENDING AT 4PM.

&&

$$

BUNKER

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KMFR [210029]: Preliminary Local Storm Report

NWUS56 KMFR 210029
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
429 PM PST SAT NOV 20 2010

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

0428 PM HEAVY SNOW 3 S MCCLOUD 41.22N 122.14W
11/20/2010 M11.0 INCH SISKIYOU CA TRAINED SPOTTER

BETWEEN 0700 AND 1600 PST. 1.42 INCHES WATER EQUIVALENT.

&&

$$

STOCKTON

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KBIS [210027]: Preliminary Local Storm Report

NWUS53 KBIS 210027
LSRBIS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
627 PM CST SAT NOV 20 2010

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

0602 PM SNOW KIEF 47.86N 100.51W
11/20/2010 M2.0 INCH MCHENRY ND PUBLIC

24 HOUR SNOWFALL, REPORT RELAYED BY BROADCAST MEDIA.

&&

$$

VROLLER

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KBIS [202359]: Preliminary Local Storm Report

NWUS53 KBIS 202359
LSRBIS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
559 PM CST SAT NOV 20 2010

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

0556 PM SNOW MARTIN 47.83N 100.11W
11/20/2010 M2.0 INCH SHERIDAN ND BROADCAST MEDIA

24 HOUR SNOWFALL.

&&

$$

VROLLER

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KBIS [202357]: Preliminary Local Storm Report

NWUS53 KBIS 202357
LSRBIS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
557 PM CST SAT NOV 20 2010

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

0552 PM SNOW WILLISTON 48.15N 103.63W
11/20/2010 M2.9 INCH WILLIAMS ND OFFICIAL NWS OBS

24 HOUR SNOWFALL.

&&

$$

VROLLER

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KSLC [202350]: Preliminary Local Storm Report

NWUS55 KSLC 202350
LSRSLC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
450 PM MST SAT NOV 20 2010

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

1255 AM NON-TSTM WND GST 2 SSE ALPINE 40.43N 111.75W
11/20/2010 M59.00 MPH UTAH UT MESONET

PLEASANT GROVE RAWS

0300 AM NON-TSTM WND GST 1 E SNOWBIRD 40.57N 111.64W
11/20/2010 M76.00 MPH SALT LAKE UT MESONET

CENTRAL WASATCH PEAKS

0900 AM NON-TSTM WND GST 10 WSW SYRACUSE 41.04N 112.23W
11/20/2010 M58.00 MPH DAVIS UT MESONET

ANTELOPE ISLAND STATE PARK SENSOR

1010 AM NON-TSTM WND GST 20 E CALLAO 39.90N 113.34W
11/20/2010 M59.00 MPH JUAB UT MESONET

FISH SPRINGS SENSOR

1030 AM NON-TSTM WND GST 5 ESE OGDEN 41.20N 111.88W
11/20/2010 M88.00 MPH WEBER UT MESONET

OGDEN PEAK SENSOR

1142 AM NON-TSTM WND GST 2 ENE VERNON 40.10N 112.42W
11/20/2010 M59.00 MPH TOOELE UT MESONET

VERNON SENSOR

1150 AM NON-TSTM WND GST 5 NNE HOLLADAY 40.73N 111.77W
11/20/2010 M59.00 MPH SALT LAKE UT MESONET

PARLEYS CANYON AT QUARRY SENSOR

1200 PM NON-TSTM WND GST 5 ENE SOUTH OGDEN 41.20N 111.86W
11/20/2010 M81.00 MPH WEBER UT MESONET

SNOWBASIN WILDCAT SENSOR

1201 PM NON-TSTM WND GST 1 ENE TOOELE 40.54N 112.28W
11/20/2010 M62.00 MPH TOOELE UT TRAINED SPOTTER

1220 PM NON-TSTM WND GST 1 ENE EUREKA 39.96N 112.10W
11/20/2010 M77.00 MPH UTAH UT MESONET

US 6 AT EUREKA SENSOR

1222 PM NON-TSTM WND GST 5 NE LAKE PT 40.73N 112.21W
11/20/2010 M61.00 MPH SALT LAKE UT MESONET

GREAT SALT LAKE MARINA SENSOR

1245 PM NON-TSTM WND GST 5 NE VERNON 40.13N 112.38W
11/20/2010 M70.00 MPH TOOELE UT MESONET

VERNON HILLS SENSOR

1255 PM NON-TSTM WND GST 2 SSW DELTA 39.33N 112.58W
11/20/2010 M58.00 MPH MILLARD UT AWOS

DELTA AWOS

&&

$$

CKRUSE

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KBIS [202346]: Preliminary Local Storm Report

NWUS53 KBIS 202346
LSRBIS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
546 PM CST SAT NOV 20 2010

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

0500 PM SNOW HARVEY 47.77N 99.94W
11/20/2010 M1.0 INCH WELLS ND BROADCAST MEDIA

24 HOUR SNOWFALL.

0540 PM SNOW NEWBURG 48.72N 100.91W
11/20/2010 M1.0 INCH BOTTINEAU ND PUBLIC

24 HOUR SNOWFALL, REPORT RELAYED BY BROADCAST MEDIA.

&&

$$

VROLLER

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KMFR [202322]: Preliminary Local Storm Report

NWUS56 KMFR 202322
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
322 PM PST SAT NOV 20 2010

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

0321 PM HEAVY SNOW 2 WSW OBRIEN 42.06N 123.73W
11/20/2010 E2.0 INCH JOSEPHINE OR TRAINED SPOTTER

APPROXIMATE TOTAL FROM LAST NIGHT THROUGH 320PM...

&&

$$

BUNKER

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KPIH [202241]: Preliminary Local Storm Report

NWUS55 KPIH 202241
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
341 PM MST SAT NOV 20 2010

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

0340 PM SNOW 4 WNW LORENZO 43.75N 111.95W
11/20/2010 M4.0 INCH MADISON ID TRAINED SPOTTER

STORM TOTAL SNOWFALL AS OF 340PM

&&

$$

JKEYES

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KPIH [202219]: Preliminary Local Storm Report

NWUS55 KPIH 202219
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
319 PM MST SAT NOV 20 2010

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

0318 PM SNOW 3 E ST. ANTHONY 43.97N 111.63W
11/20/2010 M10.0 INCH FREMONT ID TRAINED SPOTTER

STORM TOTAL

&&

$$

PANGEL

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KPIH [202208]: Preliminary Local Storm Report

NWUS55 KPIH 202208
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
308 PM MST SAT NOV 20 2010

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

0308 PM SNOW AMERICAN FALLS 42.78N 112.85W
11/20/2010 E3.0 INCH POWER ID TRAINED SPOTTER

STORM TOTAL

&&

$$

PANGEL

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KCYS [202150]: Preliminary Local Storm Report...summary

NWUS55 KCYS 202150
LSRCYS

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE CHEYENNE WY
250 PM MST SAT NOV 20 2010

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

0553 AM NON-TSTM WND GST 3 NW ARLINGTON 41.62N 106.24W
11/20/2010 E48.00 MPH CARBON WY MESONET

SUSTAINED WIND 45 MPH.

0625 AM NON-TSTM WND GST ARLINGTON 41.59N 106.21W
11/20/2010 M59.00 MPH CARBON WY DEPT OF HIGHWAYS

THE SUSTAINED WIND 46 MPH.

0650 AM HIGH SUST WINDS ARLINGTON 41.59N 106.21W
11/20/2010 E43.00 MPH CARBON WY DEPT OF HIGHWAYS

SUSTAINED WIND 41 TO 46 MPH FROM 0625 AM TO 650 AM.

0701 AM NON-TSTM WND GST 1 NNW ARLINGTON 41.60N 106.21W
11/20/2010 M69.00 MPH CARBON WY MESONET

SUSTAINED WIND 40 MPH.

0705 AM NON-TSTM WND GST WSW I-80 EXIT 279 41.54N 106.09W
11/20/2010 E63.00 MPH CARBON WY MESONET

SUSTAINED WIND 43 MPH.

0710 AM HIGH SUST WINDS ARLINGTON 41.59N 106.21W
11/20/2010 M42.00 MPH CARBON WY DEPT OF HIGHWAYS

0715 AM NON-TSTM WND GST 2 NW ARLINGTON 41.61N 106.25W
11/20/2010 E60.00 MPH CARBON WY MESONET

SUSTAINED WIND 47 MPH.

0835 AM HIGH SUST WINDS 1 NW ARLINGTON 41.60N 106.23W
11/20/2010 E43.00 MPH CARBON WY MESONET

0935 AM HIGH SUST WINDS 1 NE ARLINGTON 41.60N 106.19W
11/20/2010 E42.00 MPH CARBON WY MESONET

WIND GUST TO 57 MPH.

1005 AM NON-TSTM WND GST ARLINGTON 41.59N 106.21W
11/20/2010 E57.00 MPH CARBON WY DEPT OF HIGHWAYS

1225 PM NON-TSTM WND GST SKYLINE 41.13N 106.58W
11/20/2010 E58.00 MPH CARBON WY DEPT OF HIGHWAYS

1236 PM NON-TSTM WND GST SKYLINE 41.13N 106.58W
11/20/2010 E61.00 MPH CARBON WY DEPT OF HIGHWAYS

GUST 61 MPH FROM 1231 PM AND 1236 PM. GUST 58 MPH FROM
1221 PM AND 1226 PM.

1256 PM NON-TSTM WND GST SINCLAIR 41.78N 107.12W
11/20/2010 M50.00 MPH CARBON WY DEPT OF HIGHWAYS

ALSO, 50 MPH AT 1225, 52 AT 1205, 52 MPH AT 0830.

0141 PM NON-TSTM WND GST 1 E SKYLINE 41.13N 106.56W
11/20/2010 M51.00 MPH CARBON WY MESONET

ALSO, 53 MPH AT 1336, 53 MPH AT 1331,52 MPH AT 1311,52
MPH AT 1306.

0143 PM NON-TSTM WND GST COW CREEK 43.25N 104.62W
11/20/2010 M49.00 MPH NIOBRARA WY MESONET

0153 PM NON-TSTM WND GST RAWLINS 41.78N 107.23W
11/20/2010 M50.00 MPH CARBON WY ASOS

&&

$$

BCHAPMAN

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KTFX [202147]: Preliminary Local Storm Report

NWUS55 KTFX 202147
LSRTFX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
246 PM MST SAT NOV 20 2010

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

0235 PM SNOW WSW CUT BANK 48.63N 112.34W
11/20/2010 E3.0 INCH GLACIER MT TRAINED SPOTTER

3 INCHES OF NEW SNOW FELL SINCE EARLY THIS MORNING.

0235 PM SNOW 3 N BROWNING 48.60N 113.02W
11/20/2010 E2.0 INCH GLACIER MT TRAINED SPOTTER

2 INCHES SNOWFALL SINCE THIS MORNING. STILL SNOWING

0235 PM SNOW 12 N HINGHAM 48.73N 110.42W
11/20/2010 E1.5 INCH HILL MT CO-OP OBSERVER

SINCE THIS MORNING. STILL SNOWING LIGHTLY

&&

$$

WILLIAMSON DC

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KPIH [202144]: Preliminary Local Storm Report

NWUS55 KPIH 202144
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
244 PM MST SAT NOV 20 2010

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

0242 PM SNOW CHUBBUCK 42.92N 112.46W
11/20/2010 M4.0 INCH BANNOCK ID NWS EMPLOYEE

EAST CHUBBUCK ALONG I15 - STORM TOTAL TODAY

&&
OFF DUTY NWS EMPLOYEE
$$

PANGEL

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KCYS [202132]: Preliminary Local Storm Report

NWUS55 KCYS 202132
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
232 PM MST SAT NOV 20 2010

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

1256 PM NON-TSTM WND GST SINCLAIR 41.78N 107.12W
11/20/2010 M50 MPH CARBON WY DEPT OF HIGHWAYS

ALSO, 50 MPH AT 1225, 52 AT 1205, 52 MPH AT 0830.

&&

$$

BCHAPMAN

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KCYS [202127]: Preliminary Local Storm Report

NWUS55 KCYS 202127
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
227 PM MST SAT NOV 20 2010

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

0153 PM NON-TSTM WND GST RAWLINS 41.78N 107.23W
11/20/2010 M50.00 MPH CARBON WY ASOS

&&

$$

BCHAPMAN

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KCYS [202123]: Preliminary Local Storm Report

NWUS55 KCYS 202123
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
223 PM MST SAT NOV 20 2010

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

0141 PM NON-TSTM WND GST 1 E SKYLINE 41.13N 106.56W
11/20/2010 M51.00 MPH CARBON WY MESONET

ALSO, 53 MPH AT 1336, 53 MPH AT 1331,52 MPH AT 1311,52
MPH AT 1306.

&&

$$

BCHAPMAN

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KEKA [202022]: Preliminary Local Storm Report

NWUS56 KEKA 202022
LSREKA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EUREKA CA
1221 PM PST SAT NOV 20 2010

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

0800 AM SNOW 8 SE DINSMORE 40.40N 123.48W
11/20/2010 M2.5 INCH TRINITY CA TRAINED SPOTTER

2 TO 3 INCHES REPORTED AT 2500 FEET

0815 AM SNOW 11 SSW CARRVILLE 40.91N 122.78W
11/20/2010 E4.0 INCH TRINITY CA TRAINED SPOTTER

4 INCHES OF ACCUMULATED SNOW REPORTED OVERNIGHT AT 2500
FEET.

0815 AM SNOW 6 S ALDERPOINT 40.10N 123.60W
11/20/2010 M1.5 INCH HUMBOLDT CA TRAINED SPOTTER

TRAINED SPOTTER REPORTED 1.5 INCHES OF WET SNOW
ACCUMULATION IN THE OVERNIGHT HOURS AT 2200 FEET

0815 AM SNOW LAYTONVILLE 39.67N 123.50W
11/20/2010 M1.0 INCH MENDOCINO CA TRAINED SPOTTER

TRAINED SPOTTER REPORTED 1 INCH OF WET SNOW OVERNIGHT
NEAR IRON PEAK IN MENDOCINO COUNTY.

0900 AM SNOW TRINITY CENTER 41.00N 122.70W
11/20/2010 E3.0 INCH TRINITY CA TRAINED SPOTTER

3 INCHES OF ACCUMULATED SNOW REPORTED OVERNIGHT AT 2850
FEET

0945 AM SNOW KNEELAND 40.75N 123.98W
11/20/2010 M1.0 INCH HUMBOLDT CA TRAINED SPOTTER

TRAINED SPOTTER REPORTED 1 INCH OF NEW SNOW ACCUMULATION
OVERNIGHT AT 2500 FEET

&&

$$

BLOEMER

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KTFX [202019]: Preliminary Local Storm Report

NWUS55 KTFX 202019
LSRTFX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
119 PM MST SAT NOV 20 2010

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

0100 PM SNOW 4 ESE BELGRADE 45.76N 111.10W
11/20/2010 M3.0 INCH GALLATIN MT TRAINED SPOTTER

3 INCHES OF SNOW FELL SINCE THIS MORNING AND STILL LIGHT
TO MODERATE SNOW.

0100 PM HEAVY SNOW SSE BOZEMAN 45.67N 111.04W
11/20/2010 E4.0 INCH GALLATIN MT TRAINED SPOTTER

SNOWFALL SINCE LAST NIGHT.

0100 PM SNOW 12 W WHITEHALL 45.87N 112.35W
11/20/2010 M3.0 INCH JEFFERSON MT TRAINED SPOTTER

SNOWFALL SINCE THIS MORNING AND STILL FALLING. TEMP DOWN
TO 6 ABOVE.

&&

$$

WILLIAMSON DC

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KPIH [202008]: Preliminary Local Storm Report

NWUS55 KPIH 202008
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
108 PM MST SAT NOV 20 2010

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

0108 PM SNOW 4 SSE RIGBY 43.62N 111.89W
11/20/2010 M4.0 INCH JEFFERSON ID TRAINED SPOTTER

&&

$$

PANGEL

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KCYS [202003]: Preliminary Local Storm Report

NWUS55 KCYS 202003
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
103 PM MST SAT NOV 20 2010

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

1236 PM NON-TSTM WND GST SKYLINE 41.13N 106.58W
11/20/2010 E61 MPH CARBON WY DEPT OF HIGHWAYS

GUST 61 MPH FROM 1231 PM AND 1236 PM. GUST 58 MPH FROM
1221 PM AND 1226 PM.

&&

$$

DDEAL

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 201953
SWODY1
SPC AC 201952

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0152 PM CST SAT NOV 20 2010

VALID 202000Z - 211200Z

...NO SVR TSTM AREAS FORECAST...

...NRN CA...
SATELLITE IMAGERY SHOWS STRONG LIFT AHEAD OF SWD MOVING UPPER LOW
JUST OFF THE NRN CA COAST. AS LIFT AND COOLING ALOFT SHIFT
SWD...ISOLATED THUNDERSTORMS SHOULD MOVE INTO THE BAY AREA BY 00Z
AND INTO PORTIONS OF THE SACRAMENTO VALLEY THIS EVENING. MODELS
INDICATE DEEP TROPOSPHERIC LIFT WILL INCREASE IN INTENSITY LATER
TODAY...WITH A CORRESPONDING INCREASE IN CONVECTIVE ACTIVITY LIKELY.
A FEW CELLS MAY BE STRONG WITH LOCALLY GUSTY WINDS. FURTHER...BACKED
LOW LEVEL WINDS AHEAD OF THE COLD FRONT AND STRONG DEEP LAYER SHEAR
MAY RESULT IN ROTATION IN SOME CELLS. HOWEVER...GIVEN A GRADUALLY
COOLING BOUNDARY LAYER AFTER SUNSET...THE SEVERE THREAT APPEARS TOO
LOW FOR OUTLOOK PROBABILITIES...WITH EFFECTIVE PARCEL LEVELS
BECOMING SLIGHTLY ELEVATED INTERIOR VALLEYS.

..JEWELL.. 11/20/2010

.PREV DISCUSSION... /ISSUED 0939 AM CST SAT NOV 20 2010/

AN UPPER LOW OFF THE PACIFIC NW COAST WILL MOVE SWD INTO NRN CA BY
SUNDAY MORNING. A LEAD SHORTWAVE TROUGH OVER CNTRL/SRN COASTAL CA
WILL TRANSLATE EWD INTO THE SRN PORTIONS OF THE GREAT BASIN BY THIS
EVENING. AT THE SURFACE...A COLD FRONT WILL PUSH EWD THROUGH NV AND
SRN CA AND INTO THE LOWER CO RIVER VALLEY BY DAYBREAK SUNDAY. ISOLD
TSTM ACTIVITY APPEARS MOST PROBABLE NEAR AND OFFSHORE THE CNTRL CA
TO SRN ORE COAST DURING THE DAY AND THEN FARTHER INLAND INTO PARTS
OF CNTRL CA DURING THE LATTER HALF OF THE PERIOD AS STEEPENING MID
LEVEL LAPSE RATES /-25 TO -30 DEG C AT H5/ YIELD WEAK BUOYANCY.
FARTHER SE OVER THE CO RIVER VALLEY...INCREASING LARGE SCALE ASCENT
ATTENDANT TO THE APPROACHING UPPER TROUGH AND THE NOSE OF A MOISTURE
PLUME EMANATING FROM THE ERN PACIFIC MAY WORK IN CONCERT TO SUPPORT
A FEW THUNDERSTORMS MAINLY THIS EVENING INTO THE OVERNIGHT HOURS.

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KCYS [201942]: Preliminary Local Storm Report

NWUS55 KCYS 201942
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
1242 PM MST SAT NOV 20 2010

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

1225 PM NON-TSTM WND GST SKYLINE 41.13N 106.58W
11/20/2010 E58 MPH CARBON WY DEPT OF HIGHWAYS

&&

$$

DDEAL

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KPIH [201934]: Preliminary Local Storm Report

NWUS55 KPIH 201934
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
1234 PM MST SAT NOV 20 2010

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

1233 PM SNOW 3 NW CHUBBUCK 42.95N 112.51W
11/20/2010 M3.0 INCH BANNOCK ID NWS EMPLOYEE

HEAVY SNOW

&&

$$

PANGEL

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KGYX [201933]: Preliminary Local Storm Report

NWUS51 KGYX 201933
LSRGYX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAY ME
233 PM EST SAT NOV 20 2010

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

0200 PM NON-TSTM WND DMG RAYMOND 43.90N 70.47W
11/20/2010 CUMBERLAND ME AMATEUR RADIO

TREES DOWN ON WIRES.

0200 PM NON-TSTM WND DMG HIRAM 43.88N 70.80W
11/20/2010 OXFORD ME AMATEUR RADIO

TREES DOWN ON WIRES ON SOUTH HIRAM ROAD.

0200 PM NON-TSTM WND DMG OXFORD 44.13N 70.49W
11/20/2010 OXFORD ME AMATEUR RADIO

TREES DOWN ON WIRES.

&&

$$

JFB

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MESO: Mesoscale Discussion 2051

ACUS11 KWNS 201928
SWOMCD
SPC MCD 201927
WYZ000-MTZ000-IDZ000-202230-

MESOSCALE DISCUSSION 2051
NWS STORM PREDICTION CENTER NORMAN OK
0127 PM CST SAT NOV 20 2010

AREAS AFFECTED...ERN ID / NWRN WY

CONCERNING...HEAVY SNOW

VALID 201927Z - 202230Z

HEAVY SNOWFALL RATES OF 1-2 INCHES PER HOUR ARE EXPECTED TO CONTINUE
ACROSS ERN ID AND SHIFT INTO PARTS OF NWRN WY THROUGH THE MID
AFTERNOON HOURS.

SURFACE ANALYSIS PLACES A SHARP BAROCLINIC GRADIENT DRAPED NW TO SE
NEAR THE CONTINENTAL DIVIDE WITH AN INTERSECTING FRONT EXTENDING
FROM NEAR THE YELLOWSTONE AREA SWWD THRU FAR NWRN UT. TIME LAPSE
RADAR MOSAIC IMAGERY SHOWS A MESOSCALE BAND OF HEAVY SNOW ALONG THE
FRONT /OBSERVED SNOWFALL RATES 2 INCHES PER HOUR WITH THIS FEATURE/
SHIFTING SLOWLY EWD ACROSS THE UPPER SNAKE RIVER VALLEY.

LEFT EXIT REGION OF AN UPPER SPEED MAX HAS BEEN PROVIDING UPPER
FORCING FOR ASCENT ACROSS THE REGION THE PAST FEW HOURS...BUT WITH
TIME THIS FEATURE IS EXPECTED TO PIVOT EWD AS A LARGE SCALE TROUGH
TO THE W AMPLIFIES THIS EVENING. AS THIS OCCURS...MODEL GUIDANCE
INDICATES STRENGTHENING LOW-MID LEVEL FRONTOGENESIS ALONG THE
PREVIOUSLY DESCRIBED BOUNDARIES. OROGRAPHIC LIFT WILL AID IN
SUPPORTING LIKELY HEAVY SNOWFALL RATES THROUGH THE MID AFTERNOON
HOURS.

..SMITH.. 11/20/2010

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

ATTN...WFO...RIW...TFX...PIH...

LAT...LON 43821168 44901111 44961000 44380957 43061039 42361230
42491262 43821168

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KPIH [201924]: Preliminary Local Storm Report

NWUS55 KPIH 201924
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
1224 PM MST SAT NOV 20 2010

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

1223 PM SNOW 5 ENE BURLEY 42.57N 113.70W
11/20/2010 M3.0 INCH MINIDOKA ID TRAINED SPOTTER

0.50 INCHES OF WATER IN SNOW

&&

$$

PANGEL

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KPIH [201901]: Preliminary Local Storm Report

NWUS55 KPIH 201901
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
1201 PM MST SAT NOV 20 2010

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

1148 AM SNOW 1 NE RUPERT 42.63N 113.66W
11/20/2010 M4.5 INCH MINIDOKA ID TRAINED SPOTTER

STILL SNOWING

&&

$$

PANGEL

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KTFX [201900]: Preliminary Local Storm Report

NWUS55 KTFX 201900
LSRTFX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
1200 PM MST SAT NOV 20 2010

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

1115 AM HEAVY SNOW WEST YELLOWSTONE 44.66N 111.11W
11/20/2010 M11.0 INCH GALLATIN MT CO-OP OBSERVER

WEST YELLOWSTONE GATE COOPERATIVE OBSERVER REPORTS 11
INCHES SNOW ACCUMULATION IN 24 HOURS.

&&

$$

MPJ

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KPIH [201850]: Preliminary Local Storm Report

NWUS55 KPIH 201850
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
1150 AM MST SAT NOV 20 2010

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

1148 AM SNOW 5 W BLACKFOOT 43.20N 112.45W
11/20/2010 E4.0 INCH BINGHAM ID TRAINED SPOTTER

NEW SNOWFALL OVER PAST 2 HOURS

&&

$$

PANGEL

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KPIH [201828]: Preliminary Local Storm Report

NWUS55 KPIH 201828
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
1128 AM MST SAT NOV 20 2010

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

1120 AM SNOW POCATELLO 42.88N 112.47W
11/20/2010 M1.5 INCH BANNOCK ID NWS EMPLOYEE

OFF DUTY NWS EMPLOYEE

1120 AM SNOW POCATELLO 42.88N 112.47W
11/20/2010 M1.0 INCH BANNOCK ID NWS EMPLOYEE

OFF DUTY NWS EMPLOYEE

&&
M1.5 ON EAST BENCH
$$

PANGEL

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KREV [201801]: Preliminary Local Storm Report

NWUS55 KREV 201801
LSRREV

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RENO NV
1000 AM PST SAT NOV 20 2010

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

0612 AM SNOW MOUNT ROSE SKI AREA 39.33N 119.89W
11/20/2010 M6.0 INCH WASHOE NV PUBLIC

MT ROSE SKI RESORT REPORTED 6 INCHES OF NEW SNOW IN THE
PAST 24 HOURS.

0615 AM HEAVY SNOW SQUAW VALLEY 39.20N 120.22W
11/20/2010 M18.0 INCH PLACER CA PUBLIC

SQUAW VALLEY SKI RESORT REPORTED A TOTAL OF 12 INCHES OF
NEW SNOW AT AN ELEVATION OF 6200 FEET WITH 18 INCHES OF
NEW SNOW AT 8200 FEET.

0620 AM HEAVY SNOW ALPINE MEADOWS 39.17N 120.22W
11/20/2010 M10.0 INCH PLACER CA PUBLIC

ALPINE MEADOWS SKI RESORT REPORTED A 24-HOUR SNOWFALL
TOTAL OF 8 INCHES ON THE LOWER MOUNTAIN WITH 10 INCHES ON
THE UPPER MOUNTAIN.

0626 AM HEAVY SNOW NORTHSTAR 39.28N 120.12W
11/20/2010 M16.0 INCH PLACER CA PUBLIC

NORTHSTAR-AT-TAHOE SKI RESORT REPORTED A 24-HOUR SNOWFALL
TOTAL OF 15 INCHES OF SNOWFALL AT MID-MOUNTAIN WITH 16
INCHES OF SNOW AT THE SUMMIT.

0626 AM HEAVY SNOW 2 WSW SOUTH LAKE TAHOE 38.93N 120.01W
11/20/2010 M12.0 INCH EL DORADO CA TRAINED SPOTTER

A TRAINED WEATHER SPOTTER NEAR TAHOE KEYS REPORTED 9.0
INCHES OF SNOW ON HIS DRIVEWAY WITH 12.0 INCHES OF SNOW
ON HIS DECK SINCE 630 PM PST.

0633 AM HEAVY SNOW 5 W TRUCKEE 39.33N 120.30W
11/20/2010 M8.0 INCH NEVADA CA PUBLIC

SUGAR BOWL SKI RESORT REPORTED 5 INCHES OF NEW SNOW AT
THE BASE IN THE PAST 24 HOURS WITH 8 INCHES OF NEW SNOW
AT THE PEAK.

0633 AM HEAVY SNOW HEAVENLY VALLEY 38.96N 119.89W
11/20/2010 M18.0 INCH DOUGLAS NV PUBLIC

HEAVENLY SKI RESORT REPORTED 18 INCHES OF SNOW IN THE
PAST 24 HOURS.

0711 AM HEAVY SNOW 1 WNW MAMMOTH LAKES 37.65N 118.98W
11/20/2010 M12.0 INCH MONO CA TRAINED SPOTTER

A TOTAL OF 12 INCHES OF SNOWFALL WAS REPORTED AT AN
ELEVATION OF 8200 FEET IN THE PAST 24 HOURS.

0739 AM SNOW 1 E SLOAT 39.87N 120.72W
11/20/2010 M7.0 INCH PLUMAS CA TRAINED SPOTTER

TRAINED WEATHER SPOTTER REPORTED 24 HR SNOWFALL OF 7.0
INCHES.

0739 AM SNOW MINDEN 38.96N 119.77W
11/20/2010 M4.0 INCH DOUGLAS NV TRAINED SPOTTER

TRAINED WEATHER SPOTTER REPORTED 24 HOUR SNOWFALL OF 4.0
INCHES.

0739 AM SNOW 1 NE INCLINE VILLAGE 39.26N 119.94W
11/20/2010 M6.0 INCH WASHOE NV TRAINED SPOTTER

TRAINED SPOTTER REPORTED 24 HOUR SNOWFALL OF 6.0 INCHES.

0837 AM SNOW 1 W DOYLE 40.02N 120.12W
11/20/2010 M4.0 INCH LASSEN CA TRAINED SPOTTER

OVERNIGHT SNOWFALL TOTAL AS OF 830AM.

0905 AM HEAVY SNOW BOCA RESERVOIR 39.40N 120.09W
11/20/2010 M9.0 INCH NEVADA CA CO-OP OBSERVER

OVERNIGHT SNOWFALL TOTAL AT 5575 FEET. 0.73 INCHES OF
LIQUID EQUIVALENT MEASURED.

0908 AM SNOW LEE VINING 37.96N 119.12W
11/20/2010 M5.0 INCH MONO CA CO-OP OBSERVER

OVERNIGHT SNOWFALL TOTAL AT 6800 FEET. 0.45 INCHES OF
LIQUID EQUIVALENT MEASURED.

0909 AM SNOW STEAD 39.64N 119.88W
11/20/2010 M2.0 INCH WASHOE NV CO-OP OBSERVER

OVERNIGHT SNOWFALL TOTAL AS OF 800AM.

0911 AM SNOW BRIDGEPORT 38.26N 119.22W
11/20/2010 M4.0 INCH MONO CA CO-OP OBSERVER

OVERNIGHT SNOWFALL TOTAL AT 6470 FEET. 0.36 INCHES OF
LIQUID EQUIVALENT MEASURED.

0913 AM HEAVY SNOW 2 S HOMEWOOD 39.05N 120.16W
11/20/2010 M12.0 INCH PLACER CA TRAINED SPOTTER

OVERNIGHT SNOWFALL TOTAL AS OF 900AM. CURRENTLY 21
DEGREES.

0914 AM HEAVY SNOW HOMEWOOD 39.08N 120.16W
11/20/2010 M15.0 INCH PLACER CA TRAINED SPOTTER

OVERNIGHT SNOWFALL TOTAL FROM 600PM 11/19/10 - 600AM
11/20/10 AT 6300 FEET.

0916 AM SNOW 2 W MAMMOTH LAKES 37.64N 118.99W
11/20/2010 M13.0 INCH MONO CA MESONET

CURRENT SNOWFALL TOTAL AS OF 900AM AT MAMMOTH MOUNTAIN
SNOW STUDY LOCATED AT 9000 FEET. STILL SNOWING.

0924 AM SNOW DAGGET PASS 38.98N 119.89W
11/20/2010 M10.0 INCH DOUGLAS NV CO-OP OBSERVER

OVERNIGHT SNOWFALL TOTAL AT 7334 FEET.

0926 AM SNOW GLENBROOK 39.09N 119.94W
11/20/2010 M9.0 INCH DOUGLAS NV CO-OP OBSERVER

OVERNIGHT SNOWFALL TOTAL AT 6350 FEET.

0936 AM SNOW PORTOLA 39.80N 120.47W
11/20/2010 M7.0 INCH PLUMAS CA CO-OP OBSERVER

OVERNIGHT SNOWFALL TOTAL AT 4850 FEET. 0.73 INCHES OF
LIQUID EQUIVALENT MEASURED.

0941 AM SNOW 2 NW TAHOE CITY 39.19N 120.17W
11/20/2010 M10.0 INCH PLACER CA CO-OP OBSERVER

OVERNIGHT SNOWFALL TOTAL AT THE U.S.C.G. STATION LAKE
TAHOE.

0947 AM SNOW SUSANVILLE 40.41N 120.65W
11/20/2010 M4.0 INCH LASSEN CA CO-OP OBSERVER

OVERNIGHT SNOWFALL TOTAL AT 4184 FEET.

0956 AM HEAVY SNOW 5 WSW PROSSER CREEK RES 39.34N 120.25W
11/20/2010 M21.0 INCH NEVADA CA TRAINED SPOTTER

SNOWFALL TOTAL FROM 600PM 11/19/2010 - 900AM 11/20/2010
AT 6700 FEET. SPOTTER REPORTED THAT THE SNOW IS BEGINNING
AGAIN.

0957 AM HEAVY SNOW TRUCKEE 39.33N 120.20W
11/20/2010 M12.0 INCH NEVADA CA CO-OP OBSERVER

OVERNIGHT SNOWFALL TOTAL AT 5900 FEET.

0959 AM SNOW PORTOLA 39.80N 120.47W
11/20/2010 M8.0 INCH PLUMAS CA TRAINED SPOTTER

OVERNIGHT SNOWFALL TOTAL FROM 5PM 11/19/2010.

1000 AM HEAVY SNOW 5 SW SOUTH LAKE TAHOE 38.88N 120.03W
11/20/2010 M13.0 INCH EL DORADO CA TRAINED SPOTTER

OVERNIGHT SNOWFALL TOTAL.

&&

$$

MCGUIRE

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KMFR [201800]: Preliminary Local Storm Report

NWUS56 KMFR 201800
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
1000 AM PST SAT NOV 20 2010

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

0959 AM HEAVY SNOW MOUNT SHASTA 41.32N 122.32W
11/20/2010 M3.0 INCH SISKIYOU CA NWS EMPLOYEE

ACCUMULATION BETWEEN 7AM AND 10AM

&&

$$

BUNKER

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KPIH [201800]: Preliminary Local Storm Report

NWUS55 KPIH 201800
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
1100 AM MST SAT NOV 20 2010

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

1059 AM SNOW 3 ENE ALMO 42.11N 113.57W
11/20/2010 M5.0 INCH CASSIA ID TRAINED SPOTTER

TOTAL THUS FAR - STILL SNOWING

&&

$$

PANGEL

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KBIS [201759]: Preliminary Local Storm Report

NWUS53 KBIS 201759
LSRBIS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
1159 AM CST SAT NOV 20 2010

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

1152 AM SNOW WILLISTON 48.15N 103.63W
11/20/2010 M1.1 INCH WILLIAMS ND OFFICIAL NWS OBS

24 HOUR SNOWFALL.

&&

$$

VROLLER

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KBIS [201740]: Preliminary Local Storm Report

NWUS53 KBIS 201740
LSRBIS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
1140 AM CST SAT NOV 20 2010

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

1015 AM SNOW 2 NW BEULAH 47.28N 101.81W
11/20/2010 M1.6 INCH MERCER ND CO-OP OBSERVER

24 HOUR SNOWFALL.

0920 AM SNOW 1 E DUNN CENTER 47.35N 102.60W
11/20/2010 M1.5 INCH DUNN ND CO-OP OBSERVER

24 HOUR SNOWFALL.

0800 AM SNOW HEART BUTTE DAM 46.60N 101.81W
11/20/2010 M1.0 INCH GRANT ND CO-OP OBSERVER

24 HOUR SNOWFALL.

&&

$$

VROLLER

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KCYS [201720]: Preliminary Local Storm Report

NWUS55 KCYS 201720
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
1020 AM MST SAT NOV 20 2010

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

1005 AM NON-TSTM WND GST ARLINGTON 41.59N 106.21W
11/20/2010 E57 MPH CARBON WY DEPT OF HIGHWAYS

&&

$$

DDEAL

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KMFR [201717]: Preliminary Local Storm Report

NWUS56 KMFR 201717
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
917 AM PST SAT NOV 20 2010

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

0907 AM HEAVY SNOW ESE MOUNT SHASTA 41.32N 122.31W
11/20/2010 M3.0 INCH SISKIYOU CA TRAINED SPOTTER

ACCUMULATION OF 1 INCH PER HOUR AND PRECIP STARTED ABOUT
7AM SATURDAY MORNING.

&&

$$

BUNKER

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KMFR [201708]: Preliminary Local Storm Report

NWUS56 KMFR 201708
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
908 AM PST SAT NOV 20 2010

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

0907 AM HEAVY SNOW 2 NNE SELMA 42.30N 123.59W
11/20/2010 M0.5 INCH JOSEPHINE OR TRAINED SPOTTER

24 HOUR ACCUMULATION

&&

$$

BUNKER

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KOTX [201701]: Preliminary Local Storm Report

NWUS56 KOTX 201701
LSROTX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPOKANE WA
901 AM PST SAT NOV 20 2010

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

0859 AM HEAVY SNOW 1 NNE WATERVILLE 47.66N 120.06W
11/20/2010 E6.0 INCH DOUGLAS WA TRAINED SPOTTER

FELL SINCE LAST EVENING. BLOWING AT TIMES. STILL SNOWING
LIGHTLY.

&&

$$

JFOX

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KPIH [201657]: Preliminary Local Storm Report

NWUS55 KPIH 201657
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
957 AM MST SAT NOV 20 2010

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

0956 AM SNOW 1 NNE RUPERT 42.63N 113.67W
11/20/2010 E4.0 INCH MINIDOKA ID TRAINED SPOTTER

TOTAL SO FAR - STILL SNOWING

&&

$$

PANGEL

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KCYS [201650]: Preliminary Local Storm Report

NWUS55 KCYS 201650
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
950 AM MST SAT NOV 20 2010

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

0935 AM HIGH SUST WINDS 1 NE ARLINGTON 41.60N 106.19W
11/20/2010 E42 MPH CARBON WY MESONET

WIND GUST TO 57 MPH.

&&

$$

DDEAL

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 201636
SWODY2
SPC AC 201635

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1035 AM CST SAT NOV 20 2010

VALID 211200Z - 221200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
A LARGE UPPER TROUGH WILL EXIST OVER MUCH OF THE WRN CONUS SUNDAY
WITH A BROAD SWLY FLOW REGIME ACROSS THE CNTRL STATES INTO THE UPPER
GREAT LAKES. ALTHOUGH LOW PRESSURE WILL DEEPEN FROM THE CNTRL
ROCKIES INTO THE PLAINS...LITTLE MOISTURE WILL BE AVAILABLE FOR
THUNDERSTORMS ALTHOUGH ISOLATED NON-SEVERE CONVECTION IS LIKELY
ACROSS THE W BENEATH STEEP LAPSE RATES ALOFT...AND PERHAPS OVER
PORTIONS OF THE UPPER MS VALLEY OVERNIGHT.

...COASTAL OREGON/NRN CA INTO THE SACRAMENTO VALLEY...
AN UPPER LOW CENTER WILL BE SITUATED OVER NRN CA AT THE BEGINNING OF
THE PERIOD...SHIFTING EWD ACROSS THE GREAT BASIN DURING THE DAY.
VERY COLD AIR ALOFT WITH 500 MB TEMPERATURES AROUND -30 C WILL FAVOR
WEAK LOW TOPPED CONVECTION CAPABLE OF PRODUCING LIGHTNING. THE MOST
LIKELY AREA WILL BE ALONG THE COAST...BUT A FEW STRIKES MAY OCCUR
WITH DAYTIME HEATING INTO THE CNTRL VALLEYS. VERY WEAK INSTABILITY
AND LOW LEVEL SHEAR PROFILES SUGGEST NO SEVERE THREAT.

...UT INTO CO...
COOLING ALOFT WILL ACCOMPANY AN EWD MOVING UPPER LOW CENTER DURING
THE DAY WITH SWLY LOW LEVEL UPSLOPE FLOW INTO UT/CO. MODEL FORECAST
SOUNDINGS SHOW STEEP LOW TO MID LEVEL LAPSE RATES DEVELOPING...AND
GIVEN LARGE SCALE LIFT AND AREAS OF HEATING...ISOLATED THUNDERSTORMS
ARE LIKELY. COOL AIR AND LOW PRECIPITABLE WATER VALUES WILL LIMIT
STORM INTENSITY.

...ERN IA INTO NRN IL LATE...
A SURFACE LOW PRESSURE TROUGH WILL REMAIN QUASISTATIONARY FROM THE
UPPER MS VALLEY SWWD INTO THE CNTRL PLAINS THROUGH THE PERIOD
BENEATH GRADUAL COOLING AND HEIGHT FALLS ALOFT. PERSISTENT SWLY LOW
LEVEL FLOW WILL ALLOW BOUNDARY LAYER DEWPOINTS INTO THE MID 50S F TO
ADVECT AS FAR N AS IA/IL OVERNIGHT. WEAK ISENTROPIC ASCENT AND
DEVELOPING WEAK INSTABILITY MAY BE ENOUGH TO PRODUCE AREAS OF
ELEVATED SHOWERS AND THUNDERSTORMS BY LATE EVENING INTO THE
OVERNIGHT HOURS. NEGATIVES TO INCIPIENT CONVECTION WILL BE PRESENCE
OF DRY AIR ALOFT AND HIGH SHEAR.

..JEWELL.. 11/20/2010

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KBOI [201623]: Preliminary Local Storm Report

NWUS55 KBOI 201623
LSRBOI

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE ID
923 AM MST SAT NOV 20 2010

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

0900 AM SNOW 9 SSE MCCALL 44.79N 116.04W
11/20/2010 M1.0 INCH VALLEY ID COCORAHS

1 INCH OF NEW SNOW IN PAST 24 HRS...2 INCHES ON THE
GROUND

0900 AM SNOW 4 WSW TWIN FALLS 42.54N 114.54W
11/20/2010 M3.1 INCH TWIN FALLS ID COCORAHS

PAST 24 HRS

0913 AM SNOW 2 S GRASMERE 42.36N 115.88W
11/20/2010 E3.0 INCH OWYHEE ID TRAINED SPOTTER

SINCE 5 PM FRIDAY EVENING...STILL SNOWING

0913 AM SNOW 19 NW BURNS JUNCTION 43.00N 118.06W
11/20/2010 E1.0 INCH MALHEUR OR TRAINED SPOTTER

ESTIMATED 1 TO 1.5 INCHES SINCE FRIDAY EVENING...NO
LONGER SNOWING

0913 AM SNOW NE JORDAN VALLEY 42.98N 117.05W
11/20/2010 E3.0 INCH MALHEUR OR TRAINED SPOTTER

SINCE YESTERDAY EVENING...STILL SNOWING

0917 AM SNOW 4 SW ROGERSON 42.18N 114.65W
11/20/2010 E3.5 INCH TWIN FALLS ID TRAINED SPOTTER

ESTIMATED 3 TO 4 INCHES NEW SNOW

0923 AM SNOW 2 ESE HOLLISTER 42.34N 114.56W
11/20/2010 E4.0 INCH TWIN FALLS ID TRAINED SPOTTER

&&

$$

THIMMESCH

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KPIH [201610]: Preliminary Local Storm Report

NWUS55 KPIH 201610
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
910 AM MST SAT NOV 20 2010

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

0909 AM SNOW 5 ESE WARM RIVER 44.10N 111.23W
11/20/2010 M7.0 INCH FREMONT ID TRAINED SPOTTER

TOTAL SO FAR - STILL SNOWING

&&

$$

PANGEL

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KMFR [201608]: Preliminary Local Storm Report

NWUS56 KMFR 201608
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
808 AM PST SAT NOV 20 2010

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

0807 AM HEAVY RAIN 2 N COOS BAY 43.41N 124.22W
11/20/2010 M1.70 INCH COOS OR TRAINED SPOTTER

8AM PST NOV 19 THROUGH 8AM PST NOV 20

&&

$$

MOTTENWE

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KCYS [201544]: Preliminary Local Storm Report

NWUS55 KCYS 201544
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
843 AM MST SAT NOV 20 2010

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

0835 AM HIGH SUST WINDS 1 NW ARLINGTON 41.60N 106.23W
11/20/2010 E43 MPH CARBON WY MESONET

&&

$$

DDEAL

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 201541
SWODY1
SPC AC 201539

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0939 AM CST SAT NOV 20 2010

VALID 201630Z - 211200Z

...NO SVR TSTM AREAS FORECAST...

AN UPPER LOW OFF THE PACIFIC NW COAST WILL MOVE SWD INTO NRN CA BY
SUNDAY MORNING. A LEAD SHORTWAVE TROUGH OVER CNTRL/SRN COASTAL CA
WILL TRANSLATE EWD INTO THE SRN PORTIONS OF THE GREAT BASIN BY THIS
EVENING. AT THE SURFACE...A COLD FRONT WILL PUSH EWD THROUGH NV AND
SRN CA AND INTO THE LOWER CO RIVER VALLEY BY DAYBREAK SUNDAY. ISOLD
TSTM ACTIVITY APPEARS MOST PROBABLE NEAR AND OFFSHORE THE CNTRL CA
TO SRN ORE COAST DURING THE DAY AND THEN FARTHER INLAND INTO PARTS
OF CNTRL CA DURING THE LATTER HALF OF THE PERIOD AS STEEPENING MID
LEVEL LAPSE RATES /-25 TO -30 DEG C AT H5/ YIELD WEAK BUOYANCY.
FARTHER SE OVER THE CO RIVER VALLEY...INCREASING LARGE SCALE ASCENT
ATTENDANT TO THE APPROACHING UPPER TROUGH AND THE NOSE OF A MOISTURE
PLUME EMANATING FROM THE ERN PACIFIC MAY WORK IN CONCERT TO SUPPORT
A FEW THUNDERSTORMS MAINLY THIS EVENING INTO THE OVERNIGHT HOURS.

..SMITH.. 11/20/2010

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KPIH [201534]: Preliminary Local Storm Report

NWUS55 KPIH 201534
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
834 AM MST SAT NOV 20 2010

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

0833 AM SNOW 1 W REXBURG 43.83N 111.80W
11/20/2010 E0.5 INCH MADISON ID TRAINED SPOTTER

0.35 PRECIPITATION - 1/2 INCH OF SNOW THUS FAR

&&

$$

PANGEL

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KMFR [201528]: Preliminary Local Storm Report

NWUS56 KMFR 201528
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
728 AM PST SAT NOV 20 2010

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

0725 AM HEAVY RAIN NE BROOKINGS 42.06N 124.29W
11/20/2010 E1.03 INCH CURRY OR TRAINED SPOTTER

PRECIP MEASURED FROM 7AM 19 NOV -7AM 20 NOV. ALSO
REPORTED HEARING THUNDER AROUND 430PM 19 NOV

&&

$$

MOTTENWE

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KMFR [201528]: Preliminary Local Storm Report

NWUS56 KMFR 201528
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
728 AM PST SAT NOV 20 2010

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

&&

$$

MOTTENWE

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KCYS [201525]: Preliminary Local Storm Report

NWUS55 KCYS 201525
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
824 AM MST SAT NOV 20 2010

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

0701 AM NON-TSTM WND GST 1 NNW ARLINGTON 41.60N 106.21W
11/20/2010 M69 MPH CARBON WY MESONET

SUSTAINED WIND 40 MPH.

&&

$$

SRUBIN

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KPIH [201520]: Preliminary Local Storm Report

NWUS55 KPIH 201520
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
820 AM MST SAT NOV 20 2010

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

0817 AM SNOW 1 E ASHTON 44.07N 111.42W
11/20/2010 M7.0 INCH FREMONT ID TRAINED SPOTTER

STILL SNOWING

0817 AM SNOW SE ASHTON 44.07N 111.45W
11/20/2010 E12.0 INCH FREMONT ID TRAINED SPOTTER

STILL SNOWING

&&

$$

PANGEL

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KBOI [201519]: Preliminary Local Storm Report

NWUS55 KBOI 201519
LSRBOI

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE ID
819 AM MST SAT NOV 20 2010

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

0730 AM SNOW 6 SSE BUHL 42.52N 114.72W
11/20/2010 M3.0 INCH TWIN FALLS ID COCORAHS

24 HR TOTAL

&&

$$

MTHIMMESCH

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KPIH [201500]: Preliminary Local Storm Report

NWUS55 KPIH 201500
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
800 AM MST SAT NOV 20 2010

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

0750 AM SNOW 8 SSW BELLEVUE 43.36N 114.32W
11/20/2010 E3.5 INCH BLAINE ID TRAINED SPOTTER

24 HOUR SNOW FALL

&&

$$

TWYATT

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KPIH [201459]: Preliminary Local Storm Report

NWUS55 KPIH 201459
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
759 AM MST SAT NOV 20 2010

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

0758 AM SNOW 1 E ASHTON 44.07N 111.42W
11/20/2010 M5.5 INCH FREMONT ID TRAINED SPOTTER

TOTAL THUS FAR - STILL SNOWING

&&

$$

PANGEL

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KCYS [201442]: Preliminary Local Storm Report...corrected

NWUS55 KCYS 201442
LSRCYS

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE CHEYENNE WY
742 AM MST SAT NOV 20 2010

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

0715 AM NON-TSTM WND GST 2 NW ARLINGTON 41.61N 106.25W
11/20/2010 E60.00 MPH CARBON WY MESONET

SUSTAINED WIND 47 MPH.

&&

$$

DDEAL

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KCYS [201432]: Preliminary Local Storm Report

NWUS55 KCYS 201432
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
732 AM MST SAT NOV 20 2010

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

0710 AM HIGH SUST WINDS ARLINGTON 41.59N 106.21W
11/20/2010 M42 MPH CARBON WY DEPT OF HIGHWAYS

0715 AM NON-TSTM WND GST 2 NW ARLINGTON 41.61N 106.25W
11/20/2010 E60 MPH CARBON WY MESONET

STSTAINED WIND 47 MPH.

&&

$$

DDEAL

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KEKA [201426]: Preliminary Local Storm Report

NWUS56 KEKA 201426
LSREKA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EUREKA CA
626 AM PST SAT NOV 20 2010

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

0624 AM SNOW 6 ENE GASQUET 41.88N 123.86W
11/20/2010 E0.0 INCH DEL NORTE CA LAW ENFORCEMENT

2-3 INCHES AT MILE MARKER 20 ON HWY 199

&&

$$

ANDERSON

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KCYS [201423]: Preliminary Local Storm Report

NWUS55 KCYS 201423
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
723 AM MST SAT NOV 20 2010

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

0705 AM NON-TSTM WND GST WSW I-80 EXIT 279 41.54N 106.09W
11/20/2010 E63 MPH CARBON WY MESONET

SUSTAINED WIND 43 MPH.

&&

$$

DDEAL

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KCYS [201419]: Preliminary Local Storm Report

NWUS55 KCYS 201419
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
719 AM MST SAT NOV 20 2010

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

0553 AM NON-TSTM WND GST 3 NW ARLINGTON 41.62N 106.24W
11/20/2010 E48 MPH CARBON WY MESONET

SUSTAINED WIND 45 MPH.

&&

$$

DDEAL

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KPIH [201410]: Preliminary Local Storm Report

NWUS55 KPIH 201410
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
710 AM MST SAT NOV 20 2010

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

0708 AM SNOW 1 W VICTOR 43.60N 111.13W
11/20/2010 M3.0 INCH TETON ID TRAINED SPOTTER

TOTAL SO FAR - STILL SNOWING.

0708 AM SNOW 2 SW VICTOR 43.58N 111.14W
11/20/2010 M3.5 INCH TETON ID TRAINED SPOTTER

TOTAL SO FAR - STILL SNOWING

&&

$$

PANGEL

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KCYS [201404]: Preliminary Local Storm Report

NWUS55 KCYS 201404
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
704 AM MST SAT NOV 20 2010

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

0650 AM HIGH SUST WINDS ARLINGTON 41.59N 106.21W
11/20/2010 E43 MPH CARBON WY DEPT OF HIGHWAYS

SUSTAINED WIND 41 TO 46 MPH FROM 0625 AM TO 650 AM.

&&

$$

DDEAL

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KCYS [201343]: Preliminary Local Storm Report

NWUS55 KCYS 201343
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
643 AM MST SAT NOV 20 2010

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

0625 AM NON-TSTM WND GST ARLINGTON 41.59N 106.21W
11/20/2010 M59 MPH CARBON WY DEPT OF HIGHWAYS

THE SUSTAINED WIND 46 MPH.

&&

$$

DDEAL

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KPIH [201323]: Preliminary Local Storm Report

NWUS55 KPIH 201323
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
623 AM MST SAT NOV 20 2010

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

0500 AM SNOW 16 WNW GROUSE 43.77N 113.92W
11/20/2010 E4.5 INCH CUSTER ID MESONET

BEAR CANYON SNOTEL 7900 FT ELEVATION STORM TOTAL SO FAR

0500 AM SNOW 11 NNE KETCHUM 43.84N 114.29W
11/20/2010 E1.5 INCH BLAINE ID MESONET

LOST WOOD DIVIDE SNOTEL 7900 FT ELEVATION STORM TOTAL SO
FAR

0500 AM HEAVY SNOW 11 WNW GROUSE 43.74N 113.82W
11/20/2010 E9.0 INCH CUSTER ID MESONET

SMILEY MOUNTAIN SNOTEL 9520 FT ELEVATION STORM TOTAL SO
FAR

0500 AM SNOW 14 NNE SUN VALLEY 43.87N 114.22W
11/20/2010 E1.5 INCH CUSTER ID MESONET

STICKNEY MILL SNOTEL 7430 FT ELEVATION STORM TOTAL SO FAR

0500 AM HEAVY SNOW 7 NW IDMON 44.44N 112.00W
11/20/2010 E6.0 INCH CLARK ID MESONET

CRAB CREEK SNOTEL 6860 FT ELEVATION STORM TOTAL SO FAR

0500 AM SNOW ISLAND PARK 44.56N 111.34W
11/20/2010 E5.0 INCH FREMONT ID MESONET

ISLAND PARK SNOTEL 6290 FT ELEVATION STORM TOTAL SO FAR

0500 AM HEAVY SNOW 4 WSW ISLAND PARK 44.53N 111.41W
11/20/2010 E21.0 INCH FREMONT ID MESONET

WHITE ELEPHANT SNOTEL 7710 FT ELEVATION STORM TOTAL SO
FAR

0500 AM SNOW 5 WSW VICTOR 43.58N 111.21W
11/20/2010 E2.0 INCH TETON ID MESONET

PINE CREEK PASS SNOTEL 6720 FT ELEVATION STORM TOTAL SO
FAR

0500 AM SNOW 11 E KETCHUM 43.69N 114.15W
11/20/2010 E4.5 INCH BLAINE ID MESONET

HYNDMAN SNOTEL 7440 FT ELEVATION STORM TOTAL SO FAR

0500 AM SNOW 18 W GROUSE 43.68N 113.98W
11/20/2010 E4.0 INCH BLAINE ID MESONET

SWEDE PEAK SNOTEL 7640 FT ELEVATION STORM TOTAL SO FAR

0500 AM HEAVY SNOW 10 NE MACKAY 44.01N 113.47W
11/20/2010 E9.0 INCH CUSTER ID MESONET

HILTS CREEK SNOTEL 8000 FT ELEVATION STORM TOTAL SO FAR

0500 AM HEAVY SNOW 11 ENE CUSTER 44.44N 114.47W
11/20/2010 E12.0 INCH CUSTER ID MESONET

MILL CREEK SUMMIT SNOTEL 8800 FT ELEVATION STORM TOTAL SO
FAR

&&

$$

JMESSICK

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 201247
SWODY1
SPC AC 201245

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0645 AM CST SAT NOV 20 2010

VALID 201300Z - 211200Z

...NO SVR TSTM AREAS FORECAST...

A DEEP UPPER TROUGH OFF THE PACIFIC NORTHWEST COAST WILL TRACK
SOUTHWARD TODAY. COLD TEMPERATURES ALOFT AND STRONG ONSHORE FLOW
PATTERN WILL RESULT IN STEEP MID LEVEL LAPSE RATES AND MARGINAL CAPE
ALONG THE IMMEDIATE COAST OF SOUTHWEST ORE AND NORTHERN/CENTRAL CA.
ISOLATED LIGHTNING STRIKES WILL REMAIN POSSIBLE IN THIS AREA THROUGH
MUCH OF THE FORECAST PERIOD.

ANOTHER AREA WITH SOME RISK OF SHOWERS AND ISOLATED THUNDERSTORMS
WILL BE ACROSS PORTIONS OF SOUTHERN NV/NORTHWEST AZ LATER THIS
AFTERNOON AND EVENING AS A LEAD SHORTWAVE TROUGH MOVES ACROSS THE
AREA. DESPITE STEEP MID LEVEL LAPSE RATES...WEAK LOW LEVEL MOISTURE
VALUES WILL LIMIT THE AREAL EXTENT OF THE THUNDER THREAT.

..HART/HURLBUT.. 11/20/2010

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KMFR [201211]: Preliminary Local Storm Report

NWUS56 KMFR 201211
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
411 AM PST SAT NOV 20 2010

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

0410 AM SNOW 1 SSW OBRIEN 42.06N 123.71W
11/20/2010 E0.0 INCH JOSEPHINE OR TRAINED SPOTTER

LIGHT SNOW CURRENTLY WITH A TRACE ACCUMULATION.

&&

$$

HOLTZ

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KEKA [201203]: Preliminary Local Storm Report...corrected

NWUS56 KEKA 201203
LSREKA

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE EUREKA CA
403 AM PST SAT NOV 20 2010

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

0358 AM SNOW 5 W FOREST GLEN 40.38N 123.42W
11/20/2010 E0.0 INCH TRINITY CA DEPT OF HIGHWAYS

CHAINS OR SNOW TIRES REQUIRED ON HWY 36 FROM 3 MILES EAST
OF MAD RIVER TO 5 MILES WEST OF FOREST GLEN DUE TO SNOW.

&&

$$

ANDERSON

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KEKA [201201]: Preliminary Local Storm Report

NWUS56 KEKA 201201
LSREKA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EUREKA CA
401 AM PST SAT NOV 20 2010

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

0358 AM SNOW 5 W FOREST GLEN 40.38N 123.42W
11/20/2010 E0.0 INCH TRINITY CA DEPT OF HIGHWAYS

CHAINS OR SNOW TIRES REQUIRED FROM 3 MILES EAST OF MAD
RIVER TO 5 MILES WEST OF FOREST GLEN DUE TO SNOW.

&&

$$

ANDERSON

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KTFX [201158]: Preliminary Local Storm Report

NWUS55 KTFX 201158
LSRTFX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
458 AM MST SAT NOV 20 2010

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

1000 PM HEAVY SNOW 20 S BIG SKY 44.97N 111.33W
11/19/2010 M12.0 INCH GALLATIN MT MESONET

CARROT BASIN SNOTEL MEASURES 12.0 INCHES OF SNOWFALL IN
24 HOURS.

&&

$$

MLS

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KBGM [201106]: Preliminary Local Storm Report

NWUS51 KBGM 201106
LSRBGM

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BINGHAMTON NY
606 AM EST SAT NOV 20 2010

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

0230 AM TSTM WND DMG ARCHBALD 41.51N 75.54W
11/17/2010 LACKAWANNA PA EMERGENCY MNGR

PART OF ROOF TORN OFF MANUFACTURING FACILITY AND
INSULATION AND DEBRIS SCATTERED APPROXIMATELY 300 YARDS.
ANOTHER FACILITY ALSO HAD PORTION OF ROOF BLOWN OFF AND
AN OVERHEAD DOOR AT LOADING DOCK WAS DESTROYED.

&&

$$

PN

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DAY48SVR: Nws Storm Prediction Center Norman Ok

ACUS48 KWNS 200928
SWOD48
SPC AC 200927

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0327 AM CST SAT NOV 20 2010

VALID 231200Z - 281200Z

...DISCUSSION...
WHILE THE DETAILS VARY...00Z ECMWF/GEFS GUIDANCE ARE IN GENERAL
AGREEMENT WITH THE CONTINUED EASTWARD TRANSITION OF A BROAD UPPER
TROUGH ACROSS THE CENTRAL CONUS THROUGH THE MIDDLE PART OF THE WEEK.
INITIALLY...SHOWERS/TSTMS WILL BE POSSIBLE ALONG A
DECELERATING/STALLING FRONTAL BOUNDARY ACROSS PORTIONS OF THE TN
VALLEY/MID-SOUTH/ARKLATEX ON DAY 4/TUESDAY...BUT SEVERE TSTMS ARE
NOT EXPECTED.

THE INITIAL FOCUS FOR CONSEQUENTIAL SEVERE POTENTIAL IS ON DAY
5/WEDNESDAY...AS A RELATIVELY MOIST AIRMASS WILL BE IN PLACE AHEAD
OF A CENTRAL STATES UPPER TROUGH. WHILE A MEASURE OF NUMERICAL
GUIDANCE VARIABILITY PRECLUDES AN OUTLOOK AREA AT THIS TIME...IT
DOES SEEM PROBABLE THAT AT LEAST SOME SEVERE WEATHER THREAT WILL
EXIST ON DAY 5/WEDNESDAY INTO DAY 6/THANKSGIVING DAY...ESPECIALLY IF
THE 00Z ECMWF VERIFIES AS COMPARED TO 00Z GFS/GEFS GUIDANCE. FOR DAY
5/WEDNESDAY...SUCH A SEVERE THREAT COULD INCLUDE PORTIONS OF MO/AR
AND THE ADJACENT ARKLATEX VICINITY TO PORTIONS OF THE LOWER/MIDDLE
MS VALLEY AND LOWER OH VALLEY.

..GUYER.. 11/20/2010

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DAY3SVR: Nws Storm Prediction Center Norman Ok

ACUS03 KWNS 200744
SWODY3
SPC AC 200743

DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0143 AM CST SAT NOV 20 2010

VALID 221200Z - 231200Z

...SYNOPSIS...
AS A LONGWAVE TROUGH/BROAD CYCLONIC UPPER FLOW PREVAILS OVER THE
MAJORITY OF THE CONUS ON MONDAY...AN EMBEDDED/CONSIDERABLE SHORTWAVE
TROUGH IS EXPECTED TO RACE NORTHEASTWARD FROM THE CENTRAL
ROCKIES/HIGH PLAINS TO THE UPPER GREAT LAKES VICINITY BY EARLY
TUESDAY. AS A SURFACE LOW STEADILY DEEPENS/ADVANCES NORTHEASTWARD
ACROSS THE MIDWEST/UPPER GREAT LAKES...SHOWERS/TSTMS ARE EXPECTED
ESPECIALLY ALONG A GENERALLY EASTWARD MOVING COLD FRONT.

...MIDWEST/WESTERN GREAT LAKES...
A STRONG EARLY DAY LOW LEVEL JET AND ASSOCIATED WARM
ADVECTION/MOISTURE TRANSPORT REGIME ABOVE THE SURFACE WILL
CONTRIBUTE TO THE NORTHWARD FLUX/PARTIAL RETURN OF A MODIFIED
MARITIME AIRMASS ACROSS THE MIDWEST...AHEAD OF A DEVELOPING SURFACE
LOW/EASTWARD ADVANCING COLD FRONT. ASIDE FROM THE POSSIBILITY OF
EARLY DAY ELEVATED TSTMS ACROSS THE UPPER GREAT LAKES/MAINLY LAKE MI
GENERAL VICINITY...IT IS CONCEIVABLE THAT THE PRIMARY TIMING OF WARM
SECTOR TSTMS AND ANY SEVERE THREAT MAY NOT OCCUR UNTIL THE
EVENING/PERHAPS LATE NIGHT HOURS...ROUGHLY COINCIDENT WITH THE
EXPECTED MAIN ARRIVAL OF THE PLAINS SHORTWAVE TROUGH/JET STREAK.
REGARDLESS...BUOYANCY WILL BE LIMITED THROUGHOUT THE PERIOD AMID THE
GENERAL PREVALENCE OF 50S F SURFACE DEWPOINTS.
NONETHELESS...PROVIDED WEAK BUOYANCY OF SEVERAL HUNDRED J/KG CAPE
MONDAY AFTERNOON/NIGHT...A RATHER STRONG LOW/MID TROPOSPHERIC WIND
FIELD MAY BE CONDUCIVE FOR ISOLATED TO SCATTERED LOW-TOPPED/FAST
MOVING STRONG/SEVERE TSTMS CAPABLE OF WIND DAMAGE...AT LEAST ON AN
ISOLATED BASIS.

..GUYER.. 11/20/2010

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 200554
SWODY2
SPC AC 200553

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1153 PM CST FRI NOV 19 2010

VALID 211200Z - 221200Z

...NO TSTM AREAS FORECAST...

...SYNOPSIS...
THE WESTERN STATES LONGWAVE TROUGH WILL GRADUALLY TRANSITION
EASTWARD OVER THE WESTERN HALF TO TWO-THIRDS OF THE CONUS ON
SUNDAY...WITH STRENGTHENING CYCLONIC UPPER FLOW OVER THE CENTRAL
STATES. A LEAD PORTION OF THE AFOREMENTIONED TROUGH WILL RACE
NORTHEASTWARD OVER THE NORTHERN PLAINS...WHILE THE BRUNT OF THE
UPPER TROUGH STEADILY ADVANCES EAST-NORTHEASTWARD FROM NORTHERN CA
TO THE GREAT BASIN/CENTRAL ROCKIES.

...COASTAL CA/ORE...
A FEW LOW-TOPPED TSTMS WILL BE POSSIBLE EARLY IN THE PERIOD FOR
COASTAL PORTIONS OF NORTHERN CA...AND OTHERWISE FOR MUCH OF THE
PERIOD FOR PERHAPS COASTAL ORE /AND MORE LIKELY OFFSHORE
WATERS/...AS A STRONG POLAR JET DIGS SOUTHWARD ALONG THE PACIFIC
NORTHWEST COAST. IN EITHER CASE...TSTM PROBABILITIES APPEAR TOO LOW
TO WARRANT A GENERAL TSTM OUTLOOK.

...EASTERN GREAT BASIN/CENTRAL ROCKIES...
A FEW TSTMS CANNOT BE RULED OUT ON SUNDAY IN TANDEM WITH
CONSEQUENTIAL FORCING ASSOCIATED WITH THE EASTWARD ADVANCING
SHORTWAVE TROUGH/COLD FRONT. HOWEVER...SCANT BUOYANCY/LIMITED
PROSPECTS FOR CHARGE SEPARATION IMPLY ANY TSTMS WILL BE OF A
SPORADIC COVERAGE.

...MIDWEST/LAKE MI VICINITY LATE SUNDAY NIGHT...
WILL DEFER TO SUBSEQUENT NUMERICAL GUIDANCE AND CURRENTLY OPT NOT TO
INTRODUCE A TSTM OUTLOOK AREA FOR WHAT APPEARS TO BE A LOW
PROBABILITY TSTM SCENARIO AT THE VERY END OF THE PERIOD.
NONETHELESS...IT SEEMS A FEW TSTMS WILL BE POSSIBLE MAINLY AFTER
09Z...AS CYCLONIC FLOW ALOFT/LEVEL LEVEL JET INCREASE AHEAD OF A
COLD FRONT.

..GUYER.. 11/20/2010

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