KMFR [290413]: Preliminary Local Storm Report

NWUS56 KMFR 290413
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
813 PM PST TUE DEC 28 2010

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

0522 PM HEAVY RAIN 4 E BROOKINGS 42.07N 124.21W
12/28/2010 M2.81 INCH CURRY OR TRAINED SPOTTER

12 HR 7AM-7PM PST

0522 PM HEAVY RAIN 1 SE COOS BAY 43.37N 124.22W
12/28/2010 M2.42 INCH COOS OR TRAINED SPOTTER

12 HR

0522 PM HEAVY RAIN 1 NNE SCOTTSBURG 43.67N 123.81W
12/28/2010 M1.72 INCH DOUGLAS OR TRAINED SPOTTER

24HR 430-430 PM PST

0711 PM HEAVY SNOW LAKEVIEW 42.19N 120.35W
12/28/2010 M6.0 INCH LAKE OR LAW ENFORCEMENT

SINCE 3 PM PST

0800 PM HEAVY RAIN S ELKTON 43.63N 123.57W
12/28/2010 M1.41 INCH DOUGLAS OR TRAINED SPOTTER

12 HOUR AMOUNT.

&&

$$

SVEN

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KMFR [290317]: Preliminary Local Storm Report

NWUS56 KMFR 290317
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
717 PM PST TUE DEC 28 2010

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

0716 PM HEAVY SNOW 2 W SISKIYOU SUMMIT 42.06N 122.60W
12/28/2010 M5.5 INCH JACKSON OR TRAINED SPOTTER

&&

$$

SPILDE

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KEKA [290255]: Preliminary Local Storm Report

NWUS56 KEKA 290255
LSREKA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EUREKA CA
654 PM PST TUE DEC 28 2010

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

0345 PM SNOW DOUGLAS CITY 40.65N 122.95W
12/28/2010 E0.0 INCH TRINITY CA TRAINED SPOTTER

STARTED SNOWING AT 1700 FT. NO ACCUMULATION AS YET.

0420 PM SNOW DOUGLAS CITY 40.65N 122.95W
12/28/2010 M1.0 INCH TRINITY CA TRAINED SPOTTER

ONE INCH OF SNOW IN LAST HOUR.

0427 PM SNOW TRINITY CENTER 41.00N 122.70W
12/28/2010 M3.0 INCH TRINITY CA TRAINED SPOTTER

3 INCHES OF SNOW AT 2427 FT.

0628 PM SNOW DOUGLAS CITY 40.65N 122.95W
12/28/2010 M0.8 INCH TRINITY CA TRAINED SPOTTER

3/4 OF AN INCH OF SNOW ON THE GROUND.

0630 PM SNOW 1 SSW WEAVERVILLE 40.71N 122.94W
12/28/2010 M2.0 INCH TRINITY CA TRAINED SPOTTER

2 INCHES OF SNOW AT 2450 FT.

0640 PM SNOW 7 WNW FOREST GLEN 40.42N 123.45W
12/28/2010 E0.0 INCH TRINITY CA TRAINED SPOTTER

SNOW FELL BETWEEN 330 PM AND 530 PM AT 4294 FT. NO
ACCUMULATION.

&&

$$

RER

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KBOI [290246]: Preliminary Local Storm Report

NWUS55 KBOI 290246
LSRBOI

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE ID
746 PM MST TUE DEC 28 2010

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

0745 PM HEAVY SNOW 10 N COUNCIL 44.87N 116.43W
12/28/2010 M20.0 INCH ADAMS ID TRAINED SPOTTER

NEW SNOWFALL SINCE MIDNIGHT LAST NIGHT

&&

$$

GSKARI

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KBOI [290222]: Preliminary Local Storm Report

NWUS55 KBOI 290222
LSRBOI

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE ID
722 PM MST TUE DEC 28 2010

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

0719 PM HEAVY SNOW 3 NW CASCADE 44.55N 116.08W
12/28/2010 M17.5 INCH VALLEY ID TRAINED SPOTTER

NEW 24 HOUR STORM TOTAL SINCE LAST NIGHT

&&

$$

GSKARI

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KMFR [290208]: Preliminary Local Storm Report

NWUS56 KMFR 290208
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
608 PM PST TUE DEC 28 2010

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

0600 PM SNOW ESE MOUNT SHASTA 41.32N 122.31W
12/28/2010 M1.0 INCH SISKIYOU CA TRAINED SPOTTER

SNOW JUST BEGINNING TO ACCUMULATE. IT IS CURRENTLY
SNOWING HEAVILY WITH EAST WINDS OF 10 TO 15 MPH.

0607 PM HEAVY RAIN SSE GOLD BEACH 42.41N 124.42W
12/28/2010 M2.68 INCH CURRY OR TRAINED SPOTTER

24 HOUR TOTAL. MEASURED A 49 MPH WIND GUST AT 419 PM PST.

&&

$$

SPILDE

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KMFR [290123]: Preliminary Local Storm Report

NWUS56 KMFR 290123
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
523 PM PST TUE DEC 28 2010

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

0522 PM HEAVY RAIN 2 N COOS BAY 43.41N 124.22W
12/28/2010 M1.32 INCH COOS OR TRAINED SPOTTER

9HR PRECIP

&&

$$

SVEN

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KPIH [290111]: Preliminary Local Storm Report

NWUS55 KPIH 290111
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
610 PM MST TUE DEC 28 2010

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

0609 PM FREEZING RAIN S ASHTON 44.07N 111.45W
12/28/2010 E0.00 INCH FREMONT ID TRAINED SPOTTER

FREEZING RAIN BEGAN AT TIME OF REPORT. NEW SNOW OF 3
INCHES SINCE 830 AM THIS MORNING.

&&

$$

GWICKLUN

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 290102
SWODY1
SPC AC 290100

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0700 PM CST TUE DEC 28 2010

VALID 290100Z - 291200Z

...NO SVR TSTM AREAS FORECAST...

...PARTS OF THE ERN HALF OF TX INTO SERN OK AND THE ARKLATEX...
ELEVATED THUNDERSTORMS HAVE BEGUN TO DEVELOP WITHIN THE LARGER AREA
OF SCATTERED SHOWERS ONGOING ACROSS CENTRAL AND NRN TX. EXPECT
LIGHTNING COVERAGE TO EXPAND OVERNIGHT...AND SPREAD NEWD INTO SERN
OK AND THE ARKLATEX AS LOW-LEVEL JET AND ASSOCIATED WARM ADVECTION
INCREASE.

HAVE REMOVED LOW PROBABILITY WIND THREAT FROM S TX THIS FORECAST.
WHILE NAM MODEL SOUNDINGS INDICATE UNCAPPED NEAR SURFACE-BASED CAPE
-- AND THUS LOW-END WIND THREAT GIVEN THE AMPLE SHEAR ACROSS THE
REGION -- THE RUC AND OTHER MODEL SOUNDINGS INDICATE THE ENVIRONMENT
WILL REMAIN CAPPED TO SURFACE-BASED PARCELS THROUGH THE PERIOD BY AN
ELEVATED WARM NOSE. EXAMINATION OF THE OBSERVED 00Z CORPUS CHRISTI
SOUNDING REVEALS A SIZEABLE INVERSION AT 700 MB...IN LINE WITH THE
RUC FORECAST. MEANWHILE...THE 00Z CORPUS CHRISTI MODEL SOUNDING
FROM THE NAM IS UNCAPPED -- AND THUS SUSPECT THAT THE LACK OF AN
INVERSION INDICATED BY THE NAM ACROSS MUCH OF THE REST OF S TX
THROUGH THE END OF THE PERIOD IS ERRONEOUS.

...COASTAL PAC NW...
SHOWERS AND OCCASIONAL/EMBEDDED LIGHTNING REMAIN POSSIBLE ACROSS
PORTIONS OF THE PAC NW LATE...AS THE UPPER TROUGH REACHES THE COAST.
MAIN THUNDER THREAT APPEARS TO BE POST FRONTAL...IN ONSHORE/UPSLOPE
FLOW REGIME.

..GOSS.. 12/29/2010

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MESO: Mesoscale Discussion 2143

ACUS11 KWNS 290059
SWOMCD
SPC MCD 290058
CAZ000-290700-

MESOSCALE DISCUSSION 2143
NWS STORM PREDICTION CENTER NORMAN OK
0658 PM CST TUE DEC 28 2010

AREAS AFFECTED...SIERRA NEVADA MOUNTAINS

CONCERNING...HEAVY SNOW

VALID 290058Z - 290700Z

SNOWFALL RATES OF 2 IN/HR ARE FORECAST TO DEVELOP AT ELEVATIONS
ABOVE 4000-5000 FT OVER THE NRN SIERRA NEVADA MOUNTAINS DURING THE
03-06Z TIME PERIOD...AND THEN SPREAD SWD INTO THE SRN SIERRA NEVADA
MOUNTAINS BY 06-09Z...WHERE RATES UP TO 3 IN/HR WILL BE POSSIBLE.

WV IMAGERY SHOWS AN UPPER-LEVEL S/W TROUGH LOCATED 400-500 MILES NW
OF THE PAC NW COAST AT 00Z...WITH A SECOND DISTURBANCE AND
ASSOCIATED WLY UPR JET /SPEEDS AT 9 KM AGL AROUND 120 KT BASED ON
BHX VWP/ POSITIONED TO ITS S. IN ADDITION...SATELLITE DERIVED PW
GUIDANCE INDICATES A PROMINENT ATMOSPHERIC RIVER OF MOISTURE BEING
TRANSPORTED EWD INTO NRN CA...CHARACTERIZED BY PWAT VALUES SEVERAL
STANDARD DEVIATIONS ABOVE NORMAL FOR THE REGION AND TIME OF YEAR. AS
THE NRN STREAM DISTURBANCE CONTINUES TO DIGS SEWD TOWARD THE ORE/WA
COAST DURING THE NIGHT...THE WLY MID/UPPER LEVEL JET AND STRONG
MOISTURE TRANSPORT REGIME WILL SHIFT SWD ACROSS THE NRN SIERRA
NEVADA MOUNTAINS DURING THE 03-06Z TIME PERIOD...AND THEN THE SRN
SIERRA MOUNTAINS BY 06-09Z. THE COMBINATION OF STRONG LARGE-SCALE
ASCENT ASSOCIATED WITH THE APPROACHING UPPER TROUGH...AND MOIST
UPSLOPE AUGMENTATION ALONG THE WINDWARD SIDE OF THE MOUNTAINS...ARE
EXPECTED TO YIELD AN ENVIRONMENT FAVORABLE FOR WIDESPREAD 2 IN/HR
SNOWFALL RATES ABOVE 4000-5000 FT...WITH 3 IN/HR RATES LOCALLY
POSSIBLE OVER PORTIONS OF THE SRN SIERRA...WHERE WINDS WILL BE MORE
PERPENDICULAR TO THE MOUNTAIN RANGE.

..GARNER.. 12/29/2010

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

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

LAT...LON 40442175 40692172 40762130 38991999 38441953 37141842
36171828 35971861 36571889 38112031 38882058 39912148
40442175

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KHUN [290052]: Preliminary Local Storm Report...summary

NWUS54 KHUN 290052
LSRHUN

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE HUNTSVILLE AL
652 PM CST TUE DEC 28 2010

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

0415 AM SNOW WINCHESTER 35.19N 86.11W
12/25/2010 M0.3 INCH FRANKLIN TN CO-OP OBSERVER

0520 AM SNOW ROGERSVILLE 34.83N 87.29W
12/25/2010 U0.0 INCH LAUDERDALE AL EMERGENCY MNGR

BRIDGES ALONG US 72 BECOMING SLICK BETWEEN ELGIN
CROSSROADS AND ROGERSVILLE DUE TO SNOW AND SLEET MIX. NO
OTHER ACCUMULATIONS REPORTED AT THIS TIME.

0530 AM SNOW MOULTON 34.48N 87.29W
12/25/2010 U0.1 INCH LAWRENCE AL LAW ENFORCEMENT

LIGHT DUSTING OF SNOW PER 911 CENTER. NO TRAVEL PROBLEMS
NOTED AT THIS TIME.

0533 AM SNOW RUSSELLVILLE 34.51N 87.73W
12/25/2010 U0.1 INCH FRANKLIN AL LAW ENFORCEMENT

LIGHT DUSTING OF SNOW ACCUMULATING ON VEHICLES ONLY

0549 AM SNOW 4 S HARVEST 34.80N 86.75W
12/25/2010 U0.2 INCH MADISON AL TRAINED SPOTTER

DUSTING OF SNOW ON VEHICLES...LESS ACCUMULATION ON GRASS

0600 AM SNOW HILLSBORO 34.64N 87.19W
12/25/2010 M0.8 INCH LAWRENCE AL PUBLIC

0611 AM SNOW 1 N FLORENCE 34.81N 87.68W
12/25/2010 M0.5 INCH LAUDERDALE AL TRAINED SPOTTER

ROADWAYS BEGINNING TO ACCUMULATE SNOW, BUT STILL SLUSHY
AT THIS TIME

0613 AM SNOW MADISON 34.70N 86.75W
12/25/2010 M0.5 INCH MADISON AL TRAINED SPOTTER

MEASURED IN DOWNTOWN MADISON

0630 AM SNOW DECATUR 34.61N 86.98W
12/25/2010 U0.0 INCH MORGAN AL EMERGENCY MNGR

SNOW ACCUMULATING ON GRASSY SURFACES THROUGHOUT MORGAN
COUNTY. NO ROADWAY ISSUES YET.

0639 AM SNOW CHEROKEE 34.76N 87.97W
12/25/2010 U0.0 INCH COLBERT AL LAW ENFORCEMENT

SECONDARY ROADWAYS AND BRIDGES BECOMING SLICK IN
CHEROKEE. LITTLE ACCUMULATION ON GRASS BEGINNING AT
COLBERT COUNTY 911.

0655 AM SNOW ARAB 34.32N 86.50W
12/25/2010 U0.0 INCH MARSHALL AL EMERGENCY MNGR

SNOW ACCUMULATING ON GRASSY SURFACES IN ARAB AND ON
BRINDLEE MOUNTAIN.

0700 AM SNOW MADISON 34.70N 86.75W
12/25/2010 U0.0 INCH MADISON AL EMERGENCY MNGR

SOME ELEVATED ROADS ON RAINBOW MOUNTAIN ACCUMULATING
SNOW. EASTVIEW AND STONE DRIVE ESPECIALLY.

0705 AM SNOW COWAN 35.17N 86.02W
12/25/2010 M2.3 INCH FRANKLIN TN TRAINED SPOTTER

0707 AM SNOW WINCHESTER 35.19N 86.11W
12/25/2010 M1.1 INCH FRANKLIN TN CO-OP OBSERVER

WINCHESTER CO-OP OBSERVER MEASURED 1.1 INCHES OF SNOW ON
THE GROUND. NO ACCUMULATIONS ON ROADWAYS YET.

0710 AM SNOW DECATUR 34.61N 86.98W
12/25/2010 M0.8 INCH MORGAN AL EMERGENCY MNGR

SNOW DEPTH OF 3/4 INCH IN DECATUR. NO TRAVEL ISSUES AT
THIS TIME.

0715 AM SNOW SKYLINE 34.81N 86.12W
12/25/2010 M1.8 INCH JACKSON AL TRAINED SPOTTER

1.75 INCHES MEASURED IN SKYLINE. ROADWAYS COVERED WITH
SNOW.

0716 AM SNOW TONEY 34.90N 86.73W
12/25/2010 M2.0 INCH MADISON AL TRAINED SPOTTER

SNOW DEPTH NOW 2 INCHES IN TONEY ALABAMA.

0720 AM SNOW HUNTSVILLE 34.73N 86.59W
12/25/2010 M1.0 INCH MADISON AL NWS EMPLOYEE

ONE INCH OF SNOW MEASURED ON VEHICLES AT THE NWS OFFICE
IN HUNTSVILLE. ROADWAYS NEAR THE OFFICE ALSO SLICK SUCH
AS BRADFORD DRIVE...WYNN DRIVE...AND PORTIONS OF HWY 72
FROM MADISON INTO HUNTSVILLE.

0725 AM SNOW FLORENCE 34.80N 87.68W
12/25/2010 M0.8 INCH LAUDERDALE AL CO-OP OBSERVER

0.75 TO 1.0 INCH OF SNOW ON THE GROUND IN DOWNTOWN
FLORENCE. ROADS ARE WET AND SLUSHY. BRIDGES ARE ICY.

0730 AM SNOW 3 NE BRIDGEPORT 34.98N 85.68W
12/25/2010 M1.0 INCH JACKSON AL TRAINED SPOTTER

ONE INCH OF SNOW MEASURED NORTHEAST OF BRIDGEPORT IN
JACKSON COUNTY.

0735 AM SNOW MADISON 34.70N 86.75W
12/25/2010 M1.7 INCH MADISON AL PUBLIC

0749 AM SNOW 6 SW NEW MARKET 34.85N 86.50W
12/25/2010 M2.0 INCH MADISON AL NWS EMPLOYEE

TWO INCHES OF SNOW MEASURED OFF OF HOMER NANCE ROAD IN
NORTHEAST MADISON COUNTY.

0759 AM SNOW HARTSELLE 34.44N 86.94W
12/25/2010 E0.0 INCH MORGAN AL TRAINED SPOTTER

MOST ROADS SLUSHY IN HARTSELLE. ALSO REPORTS OF MULTIPLE
WRECKS ON INTERSTATE 65 BETWEEN HARTSELLE AND PRICEVILLE.

0800 AM SNOW ROGERSVILLE 34.83N 87.29W
12/25/2010 M2.0 INCH LAUDERDALE AL EMERGENCY MNGR

0800 AM SNOW OWENS CROSSROADS 34.58N 86.46W
12/25/2010 U0.0 INCH MADISON AL EMERGENCY MNGR

SLUSH AND SNOW REPORTED ON ROADS IN OWENS CROSS ROADS.

0801 AM SNOW HARVEST 34.86N 86.75W
12/25/2010 M2.0 INCH MADISON AL TRAINED SPOTTER

MEASURED NEAR THE INTERSECTION OF PINE GROVE ROAD AND SAM
THOMAS ROAD IN HARVEST.

0809 AM SNOW 8 W ATHENS 34.80N 87.11W
12/25/2010 M1.0 INCH LIMESTONE AL AMATEUR RADIO

MEASURED 1/4 MILE SOUTH OF THE INTERSECTION OF PARKER AND
SNAKE ROADS IN LIMESTONE COUNTY.

0812 AM SNOW 2 WSW KILLEN 34.85N 87.56W
12/25/2010 M1.0 INCH LAUDERDALE AL TRAINED SPOTTER

0822 AM SNOW 3 NE MADISON 34.73N 86.71W
12/25/2010 M2.0 INCH MADISON AL PUBLIC

TWO INCHES OF SNOW MEASURED NEAR THE INTERSECTION OF JEFF
ROAD AND CAPSHAW ROAD.

0824 AM SNOW MADISON 34.70N 86.75W
12/25/2010 M2.2 INCH MADISON AL NWS EMPLOYEE

2.2 INCHES OF SNOW MEASURED ON COUNTY LINE ROAD BY A NWS
EMPLOYEE

0825 AM SNOW HENAGAR 34.63N 85.74W
12/25/2010 U0.0 INCH DEKALB AL EMERGENCY MNGR

SLICK ROADS REPORTED IN THE HENAGAR AREA AND IN IDER.

0830 AM SNOW 2 ESE ATHENS 34.79N 86.94W
12/25/2010 M2.0 INCH LIMESTONE AL FIRE DEPT/RESCUE

0830 AM SNOW 3 NW LITTLEVILLE 34.62N 87.71W
12/25/2010 E3.0 INCH COLBERT AL PUBLIC

0835 AM SNOW COURTLAND 34.67N 87.31W
12/25/2010 U0.0 INCH LAWRENCE AL EMERGENCY MNGR

ROADS BECOMING IMPASSABLE IN COURTLAND. ALSO NUMEROUS
WRECKS IN THE AREA.

0844 AM SNOW COWAN 35.17N 86.02W
12/25/2010 M4.0 INCH FRANKLIN TN TRAINED SPOTTER

UPDATED SNOW DEPTH IN COWAN,TN. NOW 4 INCHES OF SNOW ON
THE GROUND.

0850 AM SNOW 2 SW PHIL CAMPBELL 34.33N 87.73W
12/25/2010 M3.0 INCH FRANKLIN AL TRAINED SPOTTER

0900 AM SNOW 3 N MADISON 34.74N 86.75W
12/25/2010 M2.5 INCH MADISON AL NWS EMPLOYEE

2.5 INCHES OF SNOW MEASURED NORTH OF PETTUS ROAD IN
NORTHERN MADISON COUNTY.

0900 AM SNOW 6 SW NEW MARKET 34.85N 86.50W
12/25/2010 M2.2 INCH MADISON AL NWS EMPLOYEE

UPDATE. NEW SNOW DEPTH OF 2.25 INCHES OFF HOMER NANCE
ROAD IN NORTHEAST MADISON COUNTY. REPORTED BY NWS
EMPLOYEE.

0905 AM SNOW CULLMAN 34.17N 86.84W
12/25/2010 E0.0 INCH CULLMAN AL CO-OP OBSERVER

ROADS BECOMING COVERED WITH SNOW NEAR THE VINEMONT
AIRPORT. HWY 31 SLICK IN THAT AREA.

0915 AM SNOW COWAN 35.17N 86.02W
12/25/2010 M6.5 INCH FRANKLIN TN LAW ENFORCEMENT

UPDATE. 6.5 INCHES REPORTED BY LAW ENFORCEMENT IN COWAN,
TN.

0915 AM SNOW MADISON 34.70N 86.75W
12/25/2010 U0.0 INCH MADISON AL LAW ENFORCEMENT

SEVERAL ROADS CLOSED IN MADISON COUNTY ON MONTE SANO
MOUNTAIN, KEEL MOUNTAIN, AND CHAPMAN MOUNTAIN. ALSO TWO
EXITS OFF OF 565 - JORDAN LANE AND GOVERNORS DRIVE
EASTBOUND.

0919 AM SNOW 2 NE MOORES MILL 34.86N 86.49W
12/25/2010 M2.7 INCH MADISON AL NWS EMPLOYEE

UPDATE. 2.7 INCHES MEASURED NORTHEAST OF MOORES MILL BY A
NWS EMPLOYEE.

0930 AM HEAVY SNOW 4 SW PHIL CAMPBELL 34.31N 87.76W
12/25/2010 M3.0 INCH MARION AL TRAINED SPOTTER

0945 AM SNOW 6 E SOMERVILLE 34.47N 86.69W
12/25/2010 U0.0 INCH MORGAN AL EMERGENCY MNGR

HEAVY SNOW ACCUMULATION ON POWER LINES IN THE BRINDLEE
MOUNTAIN AREA OF MORGAN COUNTY.

0947 AM SNOW 3 N MADISON 34.74N 86.75W
12/25/2010 E3.0 INCH MADISON AL NWS EMPLOYEE

UPDATE. SNOW DEPTH OF 3 INCHES NORTH OF PETTUS ROAD IN
NORTHERN MADISON COUNTY

0954 AM SNOW 2 NE FRENCH MILL 34.79N 86.85W
12/25/2010 M3.0 INCH LIMESTONE AL TRAINED SPOTTER

1005 AM SNOW 3 N HOLLY POND 34.22N 86.62W
12/25/2010 M1.0 INCH CULLMAN AL PUBLIC

1010 AM SNOW 6 SW NEW MARKET 34.85N 86.50W
12/25/2010 M2.5 INCH MADISON AL NWS EMPLOYEE

2.5 INCHES OF SNOW REPORTED OFF HOMER NANCE ROAD IN
NORTHEAST MADISON COUNTY.

1023 AM SNOW 2 N MADISON 34.73N 86.75W
12/25/2010 M3.5 INCH MADISON AL NWS EMPLOYEE

3.5 INCHES OF SNOW MEASURED BETWEEN PETTUS ROAD AND
HARBIN ROAD IN NORTHERN MADISON COUNTY.

1025 AM SNOW 6 W MOULTON 34.48N 87.40W
12/25/2010 M3.5 INCH LAWRENCE AL PUBLIC

MEASURED IN THE MIDWAY COMMUNITY ALONG HWY 24.

1030 AM SNOW HAMPTON COVE 34.67N 86.47W
12/25/2010 M2.3 INCH MADISON AL PUBLIC

1045 AM SNOW 6 NNE FYFFE 34.53N 85.86W
12/25/2010 M2.5 INCH DEKALB AL PUBLIC

COCORAHS OBSERVER

1049 AM SNOW MERIDIANVILLE 34.85N 86.57W
12/25/2010 M2.0 INCH MADISON AL TRAINED SPOTTER

MEASURED ON PATTERSON ROAD NEAR THE HWY 231/431
INTERSECTION IN MERIDIANVILLE.

1050 AM SNOW IDER 34.70N 85.67W
12/25/2010 U0.0 INCH DEKALB AL EMERGENCY MNGR

ALL ROADS IN THE TOWN OF IDER HAVE BEEN DECLARED
IMPASSABLE. TRAVEL IS AT OWN RISK.

1100 AM SNOW 5 NE MADISON 34.75N 86.69W
12/25/2010 M3.0 INCH MADISON AL PUBLIC

MEASURED NEAR THE INTERSECTION OF JEFF ROAD AND DOUGLASS
ROAD.

1100 AM HEAVY SNOW HARTSELLE 34.44N 86.94W
12/25/2010 E2.5 INCH MORGAN AL LAW ENFORCEMENT

1105 AM SNOW WEST POINT 34.24N 86.96W
12/25/2010 M2.5 INCH CULLMAN AL CO-OP OBSERVER

CO-OP OBSERVER MEASURED 2.5 INCHES OF SNOW ON THE GROUND
WITH MELTING OCCURRING AT THIS TIME.

1108 AM SNOW HENAGAR 34.63N 85.74W
12/25/2010 U0.0 INCH DEKALB AL EMERGENCY MNGR

ALL CITY STREETS WITHIN THE TOWN OF HENAGAR HAVE BEEN
CLOSED BY CITY PUBLIC SAFETY OFFICIALS.

1144 AM SNOW GERALDINE 34.35N 86.00W
12/25/2010 U0.0 INCH DEKALB AL EMERGENCY MNGR

CITY OFFICIALS IN GERALDINE HAVE DECLARED THEIR MUNICIPAL
STREETS CLOSED AT THIS TIME.

1144 AM SNOW PEEKS CORNER 34.39N 85.87W
12/25/2010 M4.0 INCH DEKALB AL EMERGENCY MNGR

EMA RELAYED A SPOTTER REPORT OF 4.0 INCHES IN PEEKS
CORNER

1204 PM SNOW 1 SE OWENS CROSSROADS 34.57N 86.45W
12/25/2010 M4.0 INCH MADISON AL PUBLIC

1230 PM SNOW 1 E ROGERSVILLE 34.83N 87.28W
12/25/2010 M2.0 INCH LAUDERDALE AL BROADCAST MEDIA

STORM TOTAL OF 2.0 INCHES 1 MILE EAST OF LAUDERDALE
COUNTY HIGH SCHOOL.

1230 PM SNOW 4 NE STEVENSON 34.91N 85.79W
12/25/2010 M3.0 INCH JACKSON AL TRAINED SPOTTER

ROADWAYS ARE SLUSHY NORTHEAST OF STEVENSON...INCLUDING
HWY 72E.

0108 PM SNOW 3 N HOLLY POND 34.22N 86.62W
12/25/2010 M2.0 INCH CULLMAN AL PUBLIC

ROADS ARE SLUSHY BUT PASSABLE AT THIS TIME.

0137 PM SNOW SKYLINE 34.81N 86.12W
12/25/2010 M5.5 INCH JACKSON AL TRAINED SPOTTER

0140 PM SNOW IDER 34.70N 85.67W
12/25/2010 M4.0 INCH DEKALB AL CO-OP OBSERVER

0230 PM HEAVY SNOW 5 NNW CULLMAN 34.24N 86.87W
12/25/2010 M4.0 INCH CULLMAN AL TRAINED SPOTTER

AT VINEMONT SCHOOL IN NORTHERN CULLMAN COUNTY.

0445 PM HEAVY SNOW RED BAY 34.44N 88.14W
12/25/2010 E3.0 INCH FRANKLIN AL AMATEUR RADIO

AMATEUR RADIO TRAINED SPOTTER REPORTED 3.0 INCHES OF SNOW
ON 5TH STREET IN RED BAY.

0530 PM HEAVY SNOW 3 NE HUNTSVILLE 34.76N 86.54W
12/25/2010 M6.0 INCH MADISON AL TRAINED SPOTTER

MEASURED ON RED TAIL LANE ON THE WEST SIDE OF MONTE SANO
MOUNTAIN.

0600 PM HEAVY SNOW 2 NNE MADISON 34.72N 86.74W
12/25/2010 M3.1 INCH MADISON AL NWS EMPLOYEE

1110 PM SNOW WINCHESTER 35.19N 86.11W
12/25/2010 M3.7 INCH FRANKLIN TN CO-OP OBSERVER

EVENT TOTAL. 3 INCHES STILL ON GROUND.

0306 AM SNOW SEWANEE 35.20N 85.92W
12/26/2010 E4.5 INCH FRANKLIN TN LAW ENFORCEMENT

STORM TOTAL OF 4 TO 5 INCHES IN SEWANEE.

0321 AM SNOW BOONSHILL 35.21N 86.74W
12/26/2010 E1.5 INCH LINCOLN TN LAW ENFORCEMENT

THROUGH 6 PM ON THE 25TH.

0321 AM HEAVY SNOW LOIS 35.23N 86.37W
12/26/2010 E3.0 INCH MOORE TN LAW ENFORCEMENT

0620 AM SNOW 5 N FLORENCE 34.87N 87.68W
12/26/2010 E1.0 INCH LAUDERDALE AL EMERGENCY MNGR

1 INCH OF NEW SNOW NORTH OF FLORENCE. MULTIPLE AUTOMOBILE
ACCIDENTS.

0645 AM HEAVY SNOW NW WINCHESTER 35.19N 86.11W
12/26/2010 M4.1 INCH FRANKLIN TN CO-OP OBSERVER

0.4 INCHES OF SNOW SINCE 4 AM. STORM TOTAL 4.1 INCHES.
RECORD DECEMBER SNOWFALL AT 7.3 INCHES.

0830 AM SNOW 2 WSW KILLEN 34.85N 87.56W
12/26/2010 M1.0 INCH LAUDERDALE AL TRAINED SPOTTER

0845 AM SNOW HARTSELLE 34.44N 86.94W
12/26/2010 M2.0 INCH MORGAN AL LAW ENFORCEMENT

INTERSTATE 65 FROM MILEMARKER 330 TO MILEMARKER 324 IS A
SOLID SHEET OF ICE WITH MULTIPLE ACCIDENTS REPORTED.
TRAVEL IS NOT ADVISED ON I-65 IN THIS AREA. STORM TOTAL
SNOWFALL SO FAR IS 2 INCHES.

1100 AM SNOW MERIDIANVILLE 34.85N 86.57W
12/26/2010 M4.0 INCH MADISON AL TRAINED SPOTTER

STORM TOTAL OF 4 TO 4.5 INCHES OF SNOW MEASURED ON
PATTERSON ROAD WITH MODERATE SNOW IN PROGRESS.

1200 PM HEAVY SNOW HUNTSVILLE 34.71N 86.63W
12/26/2010 M7.0 INCH MADISON AL BROADCAST MEDIA

7.0 INCHES OF TOTAL SNOW MEASURED BY A LOCAL MEDIA OUTLET
ON MONTE SANTO MOUNTAIN.

1200 PM SNOW 8 SW HUNTSVILLE 34.63N 86.73W
12/26/2010 M2.8 INCH MADISON AL TRAINED SPOTTER

2.8 INCHES OF TOTAL SNOWFALL MEASURED AT HUNTSVILLE
INTERNATIONAL AIRPORT FOR DECEMBER 25TH AND 26TH.

0216 PM HEAVY SNOW 5 S CHEROKEE 34.68N 87.97W
12/26/2010 M5.0 INCH COLBERT AL EMERGENCY MNGR

5 INCHES OF TOTAL SNOW ACCUMULATION IN THE MOUNT HESTER
COMMUNITY.

&&

$$

KWHITE

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KMFR [290045]: Preliminary Local Storm Report

NWUS56 KMFR 290045
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
445 PM PST TUE DEC 28 2010

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

0330 PM HEAVY RAIN 2 WSW OBRIEN 42.06N 123.73W
12/28/2010 M2.50 INCH JOSEPHINE OR TRAINED SPOTTER

330 PM TO 330 PM.

&&

$$

GLASER

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KMFR [290040]: Preliminary Local Storm Report

NWUS56 KMFR 290040
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
440 PM PST TUE DEC 28 2010

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

0330 PM HEAVY RAIN 5 SE CAVE JUNCTION 42.11N 123.58W
12/28/2010 M1.01 INCH JOSEPHINE OR TRAINED SPOTTER

330 AM TO 330 PM.

&&

$$

GLASER

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KMFR [282346]: Preliminary Local Storm Report

NWUS56 KMFR 282346
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
346 PM PST TUE DEC 28 2010

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

0345 PM HEAVY RAIN 1 SSW OBRIEN 42.06N 123.71W
12/28/2010 M2.00 INCH JOSEPHINE OR TRAINED SPOTTER

MIDNIGHT TO 345PM.

&&

$$

GLASER

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KMFR [282331]: Preliminary Local Storm Report

NWUS56 KMFR 282331
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
331 PM PST TUE DEC 28 2010

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

0328 PM SNOW ESE MOUNT SHASTA 41.32N 122.31W
12/28/2010 M0.5 INCH SISKIYOU CA TRAINED SPOTTER

SNOW BEGAN AROUND NOON AND HAS BEEN SNOWING MODERATELY TO
HEAVILY SINCE 3 PM PST. SNOW JUST STARTED TO ACCUMULATE
ON THE GROUND WITH A 1/2 INCH CURRENTLY. ELEVATION 3700.

&&

$$

WOODHEAD

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KCYS [282312]: Preliminary Local Storm Report

NWUS55 KCYS 282312
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
412 PM MST TUE DEC 28 2010

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

1225 PM NON-TSTM WND GST BORDEAUX 41.95N 104.95W
12/28/2010 M58 MPH PLATTE WY MESONET

GUSTS OF 58 TO 60 MPH WERE REPORTED THROUGH 1240PM.
SUSTAINED WINDS DURING THAT TIME WERE 40 TO 43 MPH.

0225 PM NON-TSTM WND GST BORDEAUX 41.95N 104.95W
12/28/2010 M60 MPH PLATTE WY MESONET

GUSTS OF 60 MPH WERE REPORTED THROUGH 245PM. SUSTAINED
WINDS WERE AROUND 40 MPH DURING THAT TIME.

0346 PM NON-TSTM WND GST ARLINGTON 41.59N 106.21W
12/28/2010 M57 MPH CARBON WY MESONET

SUSTAINED WINDS WERE 43 MPH.

&&

$$

LUNDQUIST

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KPDT [282244]: Preliminary Local Storm Report

NWUS56 KPDT 282244
LSRPDT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
244 PM PST TUE DEC 28 2010

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

0732 AM HEAVY SNOW SPOUT SPRINGS 45.76N 118.05W
12/28/2010 E16.0 INCH UNION OR PUBLIC

16 INCHES OF NEW SNOW SINCE MONDAY MORNING. ELEVATION
5035 FEET.

&&

$$

JAS

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KPDT [282212]: Preliminary Local Storm Report

NWUS56 KPDT 282212
LSRPDT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
212 PM PST TUE DEC 28 2010

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

1000 AM SNOW 15 SSE FLORA 45.70N 117.15W
12/28/2010 E4.5 INCH WALLOWA OR TRAINED SPOTTER

4 TO 5 INCHES OF NEW SNOW OVERNIGHT. ELEVATION 3280 FEET.

&&

$$

JAS

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KBOI [282204]: Preliminary Local Storm Report

NWUS55 KBOI 282204
LSRBOI

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE ID
304 PM MST TUE DEC 28 2010

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

0300 PM HEAVY SNOW 5 NW GARDEN VALLEY 44.15N 116.01W
12/28/2010 M14.0 INCH BOISE ID TRAINED SPOTTER

14 INCHES OF NEW SNOW SINCE 9 PM LAST NIGHT. STILL
SNOWING. 0.97 SNOW WATER EQUIVALENT.

&&

$$

THIMMESCH

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KMFR [281840]: Preliminary Local Storm Report

NWUS56 KMFR 281840
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
1040 AM PST TUE DEC 28 2010

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

1030 AM HEAVY RAIN 1 SSW OBRIEN 42.06N 123.71W
12/28/2010 M1.00 INCH JOSEPHINE OR TRAINED SPOTTER

MIDNIGHT TO 1030AM.

&&

$$

GLASER

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KPDT [281837]: Preliminary Local Storm Report

NWUS56 KPDT 281837
LSRPDT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
1037 AM PST TUE DEC 28 2010

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

1030 AM HEAVY SNOW 6 SW KAMELA 45.36N 118.47W
12/28/2010 E11.0 INCH UMATILLA OR MESONET

11 INCHES OF NEW SNOW SINCE MONDAY MORNING REPORTED AT
BOWMAN SPRINGS SNOTEL. ELEVATION 4580 FEET.

1030 AM HEAVY SNOW 6 SSW SPOUT SPRINGS 45.68N 118.10W
12/28/2010 E13.0 INCH UMATILLA OR MESONET

13 INCHES OF NEW SNOW SINCE MONDAY AFTERNOON AT HIGH
RIDGE SNOTEL. ELEVATION 4980 FEET.

&&

$$

JAS

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KMFR [281818]: Preliminary Local Storm Report

NWUS56 KMFR 281818
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
1018 AM PST TUE DEC 28 2010

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

1017 AM SNOW N TENNANT 41.59N 121.91W
12/28/2010 M0.0 INCH SISKIYOU CA TRAINED SPOTTER

SNOW JUST STARTED WITH NO NEW ACCUMULATION YET. TEMP 33
24 INCHES OF SNOW ON THE GROUND.

&&

$$

GLASER

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KMFR [281749]: Preliminary Local Storm Report

NWUS56 KMFR 281749
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
949 AM PST TUE DEC 28 2010

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

0800 AM HEAVY RAIN 5 NNW BROOKINGS 42.12N 124.32W
12/28/2010 M2.45 INCH CURRY OR TRAINED SPOTTER

8AM TO 8AM.

&&

$$

GLASER

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KPDT [281717]: Preliminary Local Storm Report

NWUS56 KPDT 281717
LSRPDT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
917 AM PST TUE DEC 28 2010

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

0916 AM HEAVY SNOW 7 W ELGIN 45.56N 118.06W
12/28/2010 E12.0 INCH UNION OR TRAINED SPOTTER

12 INCHES OF NEW SNOW SINCE 8 PM MONDAY EVENING.
ELEVATION 3200 FEET.

&&

$$

JAS

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 281712
SWODY2
SPC AC 281711

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1111 AM CST TUE DEC 28 2010

VALID 291200Z - 301200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
STG HEIGHT FALLS ALOFT ARE FCST OVER ROCKY MOUNTAIN STATES AND GREAT
BASIN DURING THIS PERIOD. BY 30/12Z...SERIES OF SPEED/VORTICITY
MAXIMA -- NOW MOVING AROUND SRN/WRN SIDES OF MID-UPPER LEVEL LOW
OVER GULF OF AK -- WILL HAVE CROSSED PAC NW AND EVOLVED INTO DEEP
TROUGH FROM NRN ROCKIES SWD ACROSS GREAT BASIN TO NWRN MEX. MOST
WRF/SPECTRAL MEMBERS OF SREF FCST CLOSED 500-MB CYCLONE OVER NRN
ROCKIES BY END OF PERIOD...ANCHORING THAT TROUGH. SEPARATE/WEAKER
TROUGH -- NOW EVIDENT IN UPPER AIR ANALYSES AND MOISTURE CHANNEL
IMAGERY FROM SWRN KS SWWD ACROSS S-CENTRAL BAJA -- IS FCST TO WEAKEN
AND PIVOT NEWD...EFFECTIVELY DIVIDING INTO TWO PRIMARY VORTICITY
MAXIMA BY END OF PERIOD...SRN ONE CROSSING NWRN GULF TO REACH LOWER
DELTA REGION.

AT SFC...LOW OVER NRN ROCKIES AT 29/12Z IS FCST TO MOVE ESEWD ACROSS
WY...CONSOLIDATING LATE IN PERIOD WITH INITIALLY SEPARATE REGIME OF
CYCLOGENESIS OVER CENTRAL HIGH PLAINS. BY 30/12Z...EXPECT PRIMARY
SFC LOW OVER KS/NEB BORDER REGION BETWEEN HLC-LNK. THIS LOW WILL BE
ATTACHED TO COLD FRONT EXTENDING WWD ACROSS NERN CO. BY THAT
TIME...STRENGTHENING BRANCH OF SFC FRONTAL ZONE...MOVING SLOWLY
EWD...WILL EXTEND NNEWD FROM LOW OVER ERN SD AND NWRN MN.

...W GULF COASTAL PLAIN...
CONVECTION MAY BE ONGOING AT BEGINNING OF PERIOD IN REGIME OF
STG/ELEVATED WAA BUT WEAK BUOYANCY...ACROSS PORTIONS N-CENTRAL TX
INTO ARKLATEX REGION. THIS ACTIVITY SHOULD MOVE NEWD INTO WEAKER
INSTABILITY AND DIMINISH THROUGH PERIOD...HOWEVER EMBEDDED THUNDER
MAY OCCUR AS FAR NE AS PORTIONS LOWER OH VALLEY. MORE CONDITIONAL
CONVECTIVE POTENTIAL EXISTS EARLY IN PERIOD OVER S-CENTRAL
TX...WHERE CINH WILL BE STRONGER...BUT ALSO VERTICAL SHEAR WILL BE
FAVORABLE. EWD EXTENSION OF THIS REGIME AND/OR ADDITIONAL TSTM
DEVELOPMENT IS EXPECTED OVER PORTIONS SE TX DURING DAY WITH AT LEAST
MRGL WIND/TORNADO THREAT. ACTIVITY THEN SHOULD SHIFT ENEWD INTO
REGIME OF MUCH WEAKER INSTABILITY OVER LA/MS DURING EVENING.

SFC BOUNDARIES WILL BE SUBTLE...LARGELY RELATED TO LAND/SEA THERMAL
GRADIENT AND AREAS OF DIFFERENTIAL DIURNAL HEATING INLAND. BROADLY
CONFLUENT BOUNDARY-LAYER FLOW IS EXPECTED ACROSS PORTIONS MID-UPPER
TX COASTAL PLAIN AND E TX DURING AFTERNOON...AMIDST WEAK CINH.
MIDLEVEL DCVA PRECEDING SRN-STREAM TROUGH WILL PASS OVER THIS REGION
ALSO. ASSOCIATED ENHANCEMENT OF MIDLEVEL LAPSE RATES WILL BE
JUXTAPOSED WITH ONGOING WAA REGIME AND NEAR-SATURATED SFC CONDITIONS
INLAND TO YIELD SFC-BASED BUOYANCY...DESPITE INCOMPLETELY MODIFIED
RETURN-FLOW AIR WITH RELATIVELY COOL TEMPS IN 60S F INLAND TO LOW
70S COAST. MODIFIED FCST SOUNDINGS SHOW MLCAPE 1000-1500 J/KG
OFFSHORE...DECREASING BELOW 300 J/KG OVER NE TX IN AREAS STABILIZED
BY CLOUDS/PRECIP. DEEP-LAYER SHEAR MAY SUPPORT ORGANIZED CLUSTERS
OF TSTMS...WITH POCKETS OF ENHANCED SRH SUITABLE FOR STORM ROTATION
ALSO POSSIBLE. ATTM THREAT APPEARS TOO CONDITIONAL/ISOLATED TO
WARRANT CATEGORICAL OUTLOOK...THOUGH IT MAY BE CONCENTRATED FURTHER
BY MESOSCALE FOCI.

..EDWARDS.. 12/28/2010

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KPDT [281627]: Preliminary Local Storm Report

NWUS56 KPDT 281627
LSRPDT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
827 AM PST TUE DEC 28 2010

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

0745 AM HEAVY SNOW 6 NW FLORA 45.96N 117.40W
12/28/2010 E12.0 INCH WALLOWA OR TRAINED SPOTTER

12 INCHES OF NEW SNOW SINCE MONDAY MORNING. ELEVATION
3400 FEET.

&&

$$

JAS

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KPDT [281615]: Preliminary Local Storm Report

NWUS56 KPDT 281615
LSRPDT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
815 AM PST TUE DEC 28 2010

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

0753 AM HEAVY SNOW 13 NE LOSTINE 45.63N 117.27W
12/28/2010 E5.0 INCH WALLOWA OR TRAINED SPOTTER

5 INCHES OF NEW SNOW SINCE MONDAY EVENING. ELEVATION 4400
FEET.

0753 AM HEAVY SNOW 1 SE FLORA 45.89N 117.29W
12/28/2010 M7.5 INCH WALLOWA OR PUBLIC

7.5 INCHES OF NEW SNOW SINCE MONDAY MORNING REPORTED BY A
COCORAHS OBSERVER. ELEVATION 4408 FEET.

&&

$$

JAS

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 281559
SWODY1
SPC AC 281557

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0957 AM CST TUE DEC 28 2010

VALID 281630Z - 291200Z

...NO SVR TSTM AREAS FORECAST...

MOISTURE RETURN FROM WRN GULF INTO SRN PLAINS WILL CONTINUE THRU THE
FORECAST PERIOD AS A FAIRLY WEAK UPPER TROUGH SRN ROCKIES SHIFTS
EWD.

CURRENT SHALLOW CONVECTION ERN HALF OF TX WILL GRADUALLY INCREASE IN
RESPONSE TO ONGOING FAVORABLE PROCESSES BECOMING SUFFICIENTLY DEEP
ENOUGH BY TONIGHT FOR THUNDERSTORM DEVELOPMENT.

STEEPENING MID LEVEL LAPSE RATES ACCOMPANYING THE SRN ROCKIES TROUGH
WILL AID IN DEEPER CONVECTIVE DEVELOPMENT. HOWEVER VERY LIMITED
INSTABILITY AND CAPE WILL PRECLUDE A CONCERN FOR SEVERE STORMS THRU
THE PERIOD.

STRONG TROUGH WILL BE DEEPENING SEWD INTO WRN U.S. TONIGHT. RAPID
COOLING ALOFT AND STRONG LARGE SCALE FORCING WILL INCREASE THE RISK
OF A FEW LIGHTNING STRIKES...MAINLY AFTER 29/06Z SWD TO NRN CA
COAST.

..HALES/MEAD.. 12/28/2010

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KPDT [281555]: Preliminary Local Storm Report

NWUS56 KPDT 281555
LSRPDT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
755 AM PST TUE DEC 28 2010

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

0753 AM HEAVY SNOW 1 WSW SKI BLUEWOOD 46.08N 117.85W
12/28/2010 M10.0 INCH COLUMBIA WA TRAINED SPOTTER

10 INCHES OF NEW SNOW SINCE MONDAY EVENING. ELEVATION
4550 FEET.

&&

$$

JAS

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KPIH [281555]: Preliminary Local Storm Report

NWUS55 KPIH 281555
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
855 AM MST TUE DEC 28 2010

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

0854 AM SNOW S ASHTON 44.07N 111.45W
12/28/2010 E1.0 INCH FREMONT ID TRAINED SPOTTER

1 INCH NEW SNOW OVERNIGHT

&&

$$

DPHELPS

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KBOI [281544]: Preliminary Local Storm Report

NWUS55 KBOI 281544
LSRBOI

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE ID
843 AM MST TUE DEC 28 2010

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

0842 AM SNOW 9 SSE MCCALL 44.79N 116.04W
12/28/2010 M5.7 INCH VALLEY ID COCORAHS

5.7 INCHES OF NEW SNOW OVERNIGHT...22 INCHES ON THE
GROUND. STILL SNOWING.

0843 AM SNOW 1 N GLENNS FERRY 42.97N 115.30W
12/28/2010 M1.5 INCH ELMORE ID COCORAHS

SINCE EARLY MORNING

&&

$$

THIMMESCH

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KBOI [281529]: Preliminary Local Storm Report

NWUS55 KBOI 281529
LSRBOI

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE ID
829 AM MST TUE DEC 28 2010

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

0827 AM HEAVY SNOW 10 N COUNCIL 44.87N 116.43W
12/28/2010 M10.5 INCH ADAMS ID TRAINED SPOTTER

OVERNIGHT

&&

$$

THIMMESCH

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KBOI [281518]: Preliminary Local Storm Report

NWUS55 KBOI 281518
LSRBOI

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE ID
818 AM MST TUE DEC 28 2010

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

0800 AM HEAVY SNOW 4 NNE HALFWAY 44.93N 117.08W
12/28/2010 M11.0 INCH BAKER OR COCORAHS

11 INCHES OF NEW SNOW OVERNIGHT...1.23 INCHES SNOW WATER
EQUIVALENT.

0800 AM SNOW 6 SSE BUHL 42.52N 114.72W
12/28/2010 M0.5 INCH TWIN FALLS ID COCORAHS

0.5 INCHES OF NEW SNOW IN FELL THE EARLY MORNING HOURS

&&

$$

THIMMESCH

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KMFR [281508]: Preliminary Local Storm Report

NWUS56 KMFR 281508
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
708 AM PST TUE DEC 28 2010

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

0707 AM HEAVY RAIN NE BROOKINGS 42.06N 124.29W
12/28/2010 M1.45 INCH CURRY OR TRAINED SPOTTER

24 HOUR ACCUMULATIVE TOTAL.

&&

$$

BUNKER

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KOTX [281449]: Preliminary Local Storm Report

NWUS56 KOTX 281449
LSROTX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPOKANE WA
649 AM PST TUE DEC 28 2010

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

0635 AM HEAVY SNOW 4 W ANATONE 46.12N 117.20W
12/28/2010 U7.0 INCH ASOTIN WA TRAINED SPOTTER

STORM TOTAL SNOWFALL FROM LAST NIGHT THROUGH THIS
MORNING. ELEVATION 3800 FEET.

&&

$$

VAN HORN

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KPDT [281436]: Preliminary Local Storm Report

NWUS56 KPDT 281436
LSRPDT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
636 AM PST TUE DEC 28 2010

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

0633 AM SNOW 2 N MEACHAM 45.53N 118.42W
12/28/2010 M12.0 INCH UMATILLA OR TRAINED SPOTTER

MEASURED 12 INCHES NEW SNOW ACCUMULATION. WATER
EQUIVALENT 1.34 INCHES.

&&

$$

RC

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KPDT [281433]: Preliminary Local Storm Report

NWUS56 KPDT 281433
LSRPDT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
633 AM PST TUE DEC 28 2010

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

0535 AM HEAVY SNOW 4 NW MEACHAM 45.55N 118.47W
12/28/2010 M8.0 INCH UMATILLA OR TRAINED SPOTTER

8 INCHES OF WET HEAVY SNOW OVERNIGHT. WATER EQUIVALENT OF
1.05 INCHES.

&&

$$

GKH

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KBOI [281404]: Preliminary Local Storm Report

NWUS55 KBOI 281404
LSRBOI

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE ID
704 AM MST TUE DEC 28 2010

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

0530 AM HEAVY SNOW BRUNDAGE SKI AREA 45.00N 116.16W
12/28/2010 M10.0 INCH ADAMS ID MESONET

&&

$$

DDECKER

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KBOI [281343]: Preliminary Local Storm Report

NWUS55 KBOI 281343
LSRBOI

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE ID
643 AM MST TUE DEC 28 2010

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

0640 AM HEAVY SNOW 2 ENE COUNCIL 44.74N 116.39W
12/28/2010 M6.5 INCH ADAMS ID TRAINED SPOTTER

&&

$$

DDECKER

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KCYS [281313]: Preliminary Local Storm Report

NWUS55 KCYS 281313
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
613 AM MST TUE DEC 28 2010

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

0536 AM NON-TSTM WND GST ARLINGTON 41.59N 106.21W
12/28/2010 M53 MPH CARBON WY DEPT OF HIGHWAYS

ALSO AT 0531.

&&

$$

BCHAPMAN

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KMFR [281308]: Preliminary Local Storm Report

NWUS56 KMFR 281308
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
508 AM PST TUE DEC 28 2010

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

0507 AM HEAVY SNOW 1 SSW KENO 42.11N 121.93W
12/28/2010 M2.0 INCH KLAMATH OR TRAINED SPOTTER

24 HOUR ACCUMULATIVE TOTAL...

&&

$$

BUNKER

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KLWX [281301]: Preliminary Local Storm Report

NWUS51 KLWX 281301
LSRLWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
801 AM EST TUE DEC 28 2010

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

0435 PM NON-TSTM WND DMG 1 N WILDE ACRES 39.16N 78.40W
12/27/2010 FREDERICK VA NWS EMPLOYEE

THREE LARGE HEALTHY TREES DOWN ON POWER LINE.

&&

EVENT NUMBER LWX1001150

$$

TCH

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KCAR [281253]: Preliminary Local Storm Report...summary

NWUS51 KCAR 281253
LSRCAR

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE CARIBOU ME
753 AM EST TUE DEC 28 2010

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

0500 AM NON-TSTM WND DMG EDMUNDS 44.87N 67.16W
12/27/2010 WASHINGTON ME TRAINED SPOTTER

POWER OUTAGES IN TOWN.

0600 AM NON-TSTM WND DMG 3 SW BAR HARBOR 44.36N 68.25W
12/27/2010 HANCOCK ME UTILITY COMPANY

POWER OUTAGES REPORTED IN THE TOWN OF SOUTHWEST HARBOR.

0600 AM NON-TSTM WND DMG BLUE HILL 44.41N 68.59W
12/27/2010 HANCOCK ME UTILITY COMPANY

POWER OUTAGES IN TOWN.

0930 AM NON-TSTM WND DMG BANGOR 44.80N 68.78W
12/27/2010 PENOBSCOT ME LAW ENFORCEMENT

A FEW TREES DOWN ON STILLWATER AVE.

0930 AM NON-TSTM WND DMG ORONO 44.88N 68.67W
12/27/2010 PENOBSCOT ME LAW ENFORCEMENT

TREES DOWN ON FOREST AVE.

0930 AM NON-TSTM WND DMG MILO 45.25N 68.99W
12/27/2010 PISCATAQUIS ME LAW ENFORCEMENT

TREES DOWN IN TOWN DUE TO STRONG WINDS.

0749 AM NON-TSTM WND DMG FORT FAIRFIELD 46.77N 67.83W
12/28/2010 AROOSTOOK ME NWS EMPLOYEE

TREE DOWN ON LINES LIMESTONE SUBSTATION PWR OUTAGE 5
THROUGH 630 AM.

&&

$$

RICHARDN

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KCAR [281252]: Preliminary Local Storm Report

NWUS51 KCAR 281252
LSRCAR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CARIBOU ME
752 AM EST TUE DEC 28 2010

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

0749 AM NON-TSTM WND DMG FORT FAIRFIELD 46.77N 67.83W
12/28/2010 AROOSTOOK ME NWS EMPLOYEE

TREE DOWN ON LINES LIMESTONE SUBSTATION PWR OUTAGE 5
THROUGH 630 AM.

&&

$$

RICHARDN

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 281241
SWODY1
SPC AC 281240

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0640 AM CST TUE DEC 28 2010

VALID 281300Z - 291200Z

...NO SVR TSTM AREAS FORECAST...

...TX/OK/AR...
A BROAD UPPER TROUGH OVER NORTHERN MEXICO AND AZ/NM WILL MOVE SLOWLY
EASTWARD AND ACROSS TX DURING THIS FORECAST PERIOD. SOUTHERLY LOW
LEVEL WINDS AHEAD OF THE TROUGH WILL TRANSPORT GULF MOISTURE
NORTHWARD WITH SURFACE DEWPOINTS CLIMBING INTO THE 50S AS FAR NORTH
AS THE RED RIVER BY WED MORNING. INCREASING LOW LEVEL WARM
ADVECTION AND LIFT WILL LIKELY RESULT IN SCATTERED SHOWERS AND
THUNDERSTORMS BY EVENING OVER PORTIONS OF CENTRAL TX...DEVELOPING
NORTHWARD INTO SOUTHEAST OK AND SOUTHWEST AR BY 29/12Z. WEAK LAPSE
RATES/INSTABILITY SHOULD PRECLUDE SEVERE STORMS.

...PACIFIC NORTHWEST COAST...
THE NEXT UPPER TROUGH AND STRONG MID/UPPER LEVEL JET WILL BEGIN
AFFECTING THE PACIFIC NORTHWEST COAST LATER TODAY. RAPID COOLING
ALOFT AND STRONG LARGE SCALE FORCING WILL INCREASE THE RISK OF A FEW
LIGHTNING STRIKES...MAINLY AFTER 29/06Z.

..HART/SMITH.. 12/28/2010

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DAY48SVR: Nws Storm Prediction Center Norman Ok

ACUS48 KWNS 280951
SWOD48
SPC AC 280950

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0350 AM CST TUE DEC 28 2010

VALID 311200Z - 051200Z

...DISCUSSION...
PER 00Z ECMWF/GEFS GUIDANCE...PRIMARY FOCUS WILL BE ON THE EXPECTED
EAST-NORTHEASTWARD PROGRESSION OF A DEEP UPPER TROUGH OVER THE
CENTRAL-EASTERN CONUS THROUGH DAYS 4/5 FRIDAY/SATURDAY. A STRONG
DEEP LAYER WIND FIELD ASSOCIATED WITH THIS LONGWAVE TROUGH IS
EXPECTED TO OVERSPREAD A RELATIVELY MOIST WARM SECTOR AHEAD OF A
COLD FRONT. THE PRIMARY FOCUS WILL BE ON DAY 4/NEW YEARS EVE...FOR
WHICH A SEVERE THREAT MAY BE FOCUSED ACROSS PORTIONS OF THE
MID-SOUTH AND MIDDLE/LOWER MS RIVER VALLEY.

WHILE A SLIGHT-RISK CALIBER SEVERE THREAT...INCLUDING THE
POSSIBILITY OF DAMAGING WINDS/SOME TORNADOES...IS CERTAINLY
PLAUSIBLE WITHIN THIS GENERAL CORRIDOR ON DAY 4/FRIDAY...CONTINUED
UNCERTAINTIES PRECLUDE A 30 PERCENT EQUIVALENT SEVERE RISK AREA.
THIS IS ATTRIBUTABLE TO A DEGREE OF NUMERICAL GUIDANCE
VARIABILITY...AS WELL AS UNCERTAINTY CONCERNING THE DEGREE/QUALITY
OF MOISTURE RETURN/RESULTANT DESTABILIZATION IN COLLOCATION WITH THE
BRUNT OF LARGE SCALE FORCING.

A FEW SEVERE STORMS CANNOT BE RULED OUT ACROSS THE SOUTHEAST STATES
INTO DAY 5/NEW YEARS DAY AHEAD OF THE COLD FRONT...BUT SEVERE TSTM
POTENTIAL OTHERWISE APPEARS LOW AS THE COLD FRONT SWEEPS OFFSHORE
AND COOL/STABLE CONDITIONS PREVAIL BY DAYS 6/7 SUNDAY/MONDAY.

..GUYER.. 12/28/2010

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KCYS [280931]: Preliminary Local Storm Report

NWUS55 KCYS 280931
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
231 AM MST TUE DEC 28 2010

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

1246 AM NON-TSTM WND GST ARLINGTON 41.59N 106.21W
12/28/2010 M61.00 MPH CARBON WY DEPT OF HIGHWAYS

ARLINGTON HIGHWAY SENSOR. ELEV 7763 FEET. SUSTAINED WIND
AT TIME OF OBSERVATION 46 MPH.

0111 AM HIGH SUST WINDS ARLINGTON 41.59N 106.21W
12/28/2010 M48.00 MPH CARBON WY DEPT OF HIGHWAYS

ARLINGTON HIGHWAY SENSOR. ELEV 7763 FEET. HIGHEST
SUSTAINED WIND BETWEEN 1246 AM AND 206 AM MST...DURING
WHICH SUSTAINED WINDS RANGED FROM 39 TO 48 MPH. WIND
GUSTS RANGED FROM 49 TO 61 MPH DURING THE SAME
PERIOD...BUT DID NOT GUST GREATER THAN OR EQUAL TO 58 MPH
AFTER 101 AM MST.

&&

$$

SJC

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DAY3SVR: Nws Storm Prediction Center Norman Ok

ACUS03 KWNS 280829
SWODY3
SPC AC 280828

DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0228 AM CST TUE DEC 28 2010

VALID 301200Z - 311200Z

...SYNOPSIS...
WHILE LARGE SCALE DISCREPANCIES EXIST AMONGST 00Z ECMWF/NAM/GFS
GUIDANCE...GENERAL CONSENSUS SUGGESTS THAT A DEEP WESTERN STATES
TROUGH WILL CONTINUE TO ADVANCE TOWARD THE PLAINS...WITH THE LEAD
BRUNT/EXIT REGION OF A STRONG POLAR JET EJECTING NORTHEASTWARD OVER
THE CENTRAL/SOUTHERN PLAINS THURSDAY NIGHT. THIS SCENARIO WILL LEAD
TO INCREASING PROSPECTS FOR DEEP CONVECTION /INCLUDING SEVERE
POTENTIAL/ ACROSS THE SOUTH CENTRAL CONUS FROM THURSDAY NIGHT INTO
FRIDAY.

...EASTERN OK/ARKLATEX...
GIVEN THE LARGE SCALE SCENARIO/CAVEATS AS PREVIOUSLY
DESCRIBED...SURFACE CYCLOGENESIS IS EXPECTED DURING THE PERIOD WITH
AN ATTENDANT LEE TROUGH/COLD FRONT GRADUALLY DEVELOPING EASTWARD
ACROSS THE SOUTH-CENTRAL PLAINS. AT THE SAME TIME...A MODIFIED GULF
AIRMASS WILL GRADUALLY RETREAT NORTHWARD AS A RELATIVELY MOIST
AIRMASS/WARM SECTOR BECOMES INCREASINGLY ESTABLISHED THURSDAY NIGHT
INTO FRIDAY.

CURRENT EXPECTATIONS ARE FOR DEEP CONVECTION/TSTMS TO BECOME
INCREASINGLY PROBABLE/PREVALENT LATE THURSDAY NIGHT ACROSS PORTIONS
OF EASTERN OK AND ARKLATEX...AS THE LEADING EDGE OF HEIGHT
FALLS/FORCING ALOFT GRAZE THE WARM SECTOR. THE POTENTIAL COMBINATION
OF WEAK BUT ADEQUATE BUOYANCY AMID UPPER 50S/NEAR 60F SURFACE
DEWPOINTS...COUPLED WITH STRONG SOUTHWESTERLY FLOW ALOFT AND AMPLE
LOW LEVEL SHEAR /AIDED BY A 40+ KT LOW LEVEL JET/...COULD SUPPORT
POTENTIAL FOR SOME SUPERCELLS/ORGANIZED LINE SEGMENTS POTENTIALLY
CAPABLE OF A TORNADO AND/OR DAMAGING WIND RISK. WHILE UNCERTAINTIES
EXIST REGARDING THE TIMING/EXTENT AND LIKELIHOOD OF A SEVERE RISK
THURSDAY NIGHT/EARLY FRIDAY...SEVERE PROBABILITIES FOR AT LEAST A
MARGINAL/CONDITIONAL-TYPE RISK ARE WARRANTED.

..GUYER.. 12/28/2010

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KCYS [280731]: Preliminary Local Storm Report

NWUS55 KCYS 280731
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
1230 AM MST TUE DEC 28 2010

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

1211 AM NON-TSTM WND GST ARLINGTON 41.59N 106.21W
12/28/2010 M60 MPH CARBON WY DEPT OF HIGHWAYS

ARLINGTON HIGHWAY SENSOR. ELEV. 7763. STRONGEST GUST
SINCE 845 PM MST. NUMEROUS GUSTS IN EXCESS OF 58 MPH
BETWEEN 1036 PM AND 1211 AM MST. SUSTAINED WINDS GREATER
THAN OR EQUAL TO 40 MPH ALSO REPORTED BETWEEN 1011 PM AND
1211 AM MST.

&&

$$

SJC

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 280658
SWODY2
SPC AC 280657

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1257 AM CST TUE DEC 28 2010

VALID 291200Z - 301200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
THE LARGE SCALE PATTERN OVER THE CONUS IS EXPECTED TO REAMPLIFY INTO
WEDNESDAY...HIGHLIGHTED BY A DEEPENING LONGWAVE TROUGH OVER THE
INTERMOUNTAIN WEST/GREAT BASIN. A FEW TSTMS MAY BE POSSIBLE ACROSS
THE COASTAL PACIFIC NORTHWEST WEDNESDAY MORNING WITHIN A
POST-FRONTAL ENVIRONMENT...BUT OTHERWISE...THE MAIN TSTM POTENTIAL
FOR THE PERIOD IS EXPECTED TO BE ACROSS EAST/SOUTHEAST TX AND LA.

...SOUTHEAST/EAST TX AND SOUTHERN LA...
SHOWERS/EMBEDDED TSTMS WILL BE ONGOING WEDNESDAY MORNING ALONG THE
TX COAST/MUCH OF EAST TX. WHILE A SHORTWAVE TROUGH/SPEED MAX
ADVANCES EAST-NORTHEASTWARD OVER TX/LA ON WEDNESDAY...THE AIRMASS
OVER THE GULF WILL CONTINUE TO MODIFY/GRADUALLY RETURN TOWARD THE TX
COAST. ASIDE FROM ONLY MODEST AIRMASS MODIFICATION INTO
WEDNESDAY...EXTENSIVE INLAND CONVECTION SHOULD ALSO DETER AN
APPRECIABLY MOIST AIRMASS MAKING IT INLAND ALONG THE TX/LA
COAST...WITH CONSEQUENTIAL NEAR-SURFACE DESTABILIZATION UNLIKELY
ESPECIALLY AWAY FROM THE IMMEDIATE COAST. BUT GIVEN MODERATELY
STRONG/VEERING LOW/MID TROPOSPHERIC WINDS...SOME POTENTIAL MAY EXIST
FOR A FEW ROTATING STORMS/A BRIEF TORNADO AND/OR STRONG WINDS MAINLY
ALONG THE IMMEDIATE TX/LA COAST WEDNESDAY...ALTHOUGH ANY SUCH THREAT
SHOULD REMAIN MARGINAL/ISOLATED OVERALL.

..GUYER.. 12/28/2010

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 280553
SWODY1
SPC AC 280551

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1151 PM CST MON DEC 27 2010

VALID 281200Z - 291200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
AS AN UPPER TROUGH AND ASSOCIATED SURFACE CYCLONE CONTINUE TO SLOWLY
SHIFT AWAY FROM THE NORTHEAST CONUS THIS PERIOD...A WEAKER UPPER
TROUGH WILL CROSS THE SWRN CONUS AND BEGIN MOVING INTO THE SRN
PLAINS LATE. ALSO LATE IN THE PERIOD...A FAST-MOVING TROUGH IS
FORECAST TO MOVE SEWD TOWARD -- AND EVENTUALLY INTO -- THE NWRN
CONUS.

WHILE MUCH OF THE U.S. WILL REMAIN COOL/STABLE THUS HINDERING
CONVECTIVE POTENTIAL...SHOWERS AND PERHAPS A FEW THUNDERSTORMS WILL
BE POSSIBLE OVER THE SRN PLAINS REGION AND ACROSS THE COASTAL PAC NW
IN ADVANCE OF THE UPPER SYSTEMS APPROACHING THOSE AREAS.

...E TX AND VICINITY...
LOW-LEVEL WARM/MOIST ADVECTION -- INCREASING DURING THE SECOND HALF
OF THE PERIOD IN CONJUNCTION WITH AN INTENSIFYING LOW-LEVEL JET
AHEAD OF THE APPROACHING UPPER SYSTEM -- SHOULD RESULT IN VERY
MODEST DESTABILIZATION ATOP A MORE STABLE LOW-LEVEL AIRMASS. WHILE
THE DEGREE OF DESTABILIZATION SHOULD PROVE INSUFFICIENT FOR ANY
APPRECIABLE SEVERE THREAT...SHOWERS AND SCATTERED/ELEVATED
THUNDERSTORMS ARE EXPECTED TO DEVELOP DURING THE SECOND HALF OF THE
PERIOD ACROSS E TX AND VICINITY.

...PAC NW COAST...
THE APPROACH OF THE FAST-MOVING UPPER TROUGH LATE IN THE PERIOD --
AND ASSOCIATED COOLING ALOFT -- WILL YIELD MINIMAL DESTABILIZATION
ACROSS THIS REGION. PASSAGE OF AN ASSOCIATED SURFACE COLD FRONT --
AND WLY/NWLY LOW-LEVEL UPSLOPE BEHIND THE FRONT -- SHOULD SUPPORT
SHOWERS AND PERHAPS SOME EMBEDDED LIGHTNING.

..GOSS/GARNER.. 12/28/2010

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KMFR [280505]: Preliminary Local Storm Report

NWUS56 KMFR 280505
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
905 PM PST MON DEC 27 2010

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

0904 PM HEAVY RAIN 6 ESE COOS BAY 43.33N 124.12W
12/27/2010 M1.07 INCH COOS OR TRAINED SPOTTER

24 HOUR AMOUNT ENDING AT 9 PM.

&&

$$

DW

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