Sunday, December 16, 2012

KFGF [161641]: Preliminary Local Storm Report

NWUS53 KFGF 161641
LSRFGF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1040 AM CST SUN DEC 16 2012

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

0800 AM SNOW 3 S WADENA 46.40N 95.13W
12/16/2012 M3.0 INCH WADENA MN CO-OP OBSERVER

24 HR SNOWFALL


&&

$$

WBARRETT

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 161632
SWODY1
SPC AC 161630

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1030 AM CST SUN DEC 16 2012

VALID 161630Z - 171200Z

...THERE IS A SLGT RISK OF SVR TSTMS FROM CSTL TX ENE INTO THE CNTRL
GULF CST STATES...

...SYNOPSIS...
MODERATE TO FAST WSW FLOW WILL CONTINUE FROM THE S CNTRL STATES TO
THE MID ATLANTIC CST...ON NRN FRINGE OF PERSISTENT GULF OF MEXICO
RIDGE. SEVERAL DISTURBANCES IN THIS FLOW WILL MODULATE TSTM/SVR
POTENTIAL THROUGH THE PERIOD.

AN IMPULSE/JET STREAK NOW IN S CNTRL TX SHOULD CONTINUE ENE TO THE
ARKLAMS BY EVE...AND INTO THE SRN APPALACHIANS EARLY
MON...DEAMPLIFYING IN THE PROCESS. FARTHER N...STRONGER SHORTWAVE
TROUGH NOW OVER SW KS ALSO SHOULD DEAMPLIFY AS IT SHEARS ENE INTO
CONFLUENT FLOW OVER THE LWR OH VLY/MIDWEST. FINALLY...UPSTREAM
TROUGH NOW IN AZ MAY SOMEWHAT STRENGTHEN AS IT CONTINUES ESE INTO
THE SRN PLNS TNGT/EARLY MON. THIS WILL SERVE TO STRENGTHEN MID/UPR
LVL FLOW ACROSS THE S CNTRL AND SERN STATES LATER IN THE PERIOD.

AT LWR LVLS...MAIN FEATURE OF NOTE WILL BE SHALLOW RAIN-REINFORCED
QSTNRY FRONT ATTM EXTENDING FROM S CNTRL TX ENE INTO MS/AL. THIS
BOUNDARY LIKELY WILL REMAIN NEARLY STNRY THROUGH THE PERIOD AND WILL
BE THE FOCUS OF THE STRONGEST CONVECTION/STORMS. FARTHER N AND
NW...SHALLOW COLD FRONT NOW EXTENDING FROM LK MI SW INTO THE CNTRL
HI PLNS MAY BECOME BETTER DEFINED WITH TIME AS FRONTOGENESIS OCCURS
IN ITS VICINITY IN RESPONSE TO UPR SYSTEM AMPLIFYING ESEWD FROM AZ.

...CSTL TX ENE INTO THE CNTRL GULF CST STATES TODAY/TNGT...
AN EXTENSIVE BAND OF SHOWERS/TSTMS LIKELY WILL PERSIST THROUGH THE
PERIOD ALONG AFOREMENTIONED QSTNRY FRONT FROM CSTL TX NE INTO
LA...MS...AND AL. THE FOCUS FOR STRONGEST DEVELOPMENT SHOULD SHIFT
SLOWLY EWD WITH TIME AS /1/ TX UPR IMPULSE CONTINUES ENEWD AND /2/
ASSOCIATED CONFLUENT LLJ EDGES EWD INTO LA/MS FROM CURRENT POSITION
IN SE TX.

COMBINATION OF MODERATE TO STRONG CLOUD-LAYER SHEAR...MOISTENING
LOW-LVL ENVIRONMENT /PWS INCREASING TO 1.50-1.75 INCHES/...A WEAK
ELONGATING COLD POOL...AND PERSISTENT UPR DIVERGENCE WILL YIELD A
SETUP FAVORABLE FOR A LONG-LIVED WSW-ENE ORIENTED QLCS. EMBEDDED
SUSTAINED STORMS/OCCASIONAL SUPERCELLS MOVING PARALLEL TO THE
SLOWLY-PROGRESSIVE BOUNDARY WILL HAVE THE POTENTIAL TO PRODUCE
LOCALLY DMGG WIND AND POSSIBLY A TORNADO OR TWO...ESPECIALLY LATER
TODAY/TNGT AS LOW LVL AIR MASS MOISTENS AND 700 MB FLOW STRENGTHENS
TO AROUND 50 KTS OVER THE CNTRL GULF CST STATES. A LIMITED RISK ALSO
WILL EXIST FOR A FEW STORMS TO FORM AHEAD OF THE BOUNDARY FROM CSTL
TX THIS AFTN...INTO PARTS OF LA/MS AND AL LATER TODAY/TNGT.

...LWR OH VLY...
APPROACH OF AMPLIFYING AZ UPR IMPULSE...AND MOISTENING AHEAD OF
IT...MAY YIELD A SEPARATE AREA OF SHOWERS/STORMS LATE TNGT/EARLY MON
OVER PARTS OF THE LWR OH VLY. COOL MID LVL TEMPS AND PRESENCE OF
AMPLE CLOUD-LAYER SHEAR FOR SUSTAINED STORMS MAY SUPPORT A FEW CELLS
CAPABLE OF HAIL...ALTHOUGH OVERALL SVR POTENTIAL LOOKS QUITE LOW.

..CORFIDI/COHEN.. 12/16/2012

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KOTX [161620]: Preliminary Local Storm Report

NWUS56 KOTX 161620
LSROTX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPOKANE WA
820 AM PST SUN DEC 16 2012

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

0700 AM HEAVY SNOW 12 N LEAVENWORTH 47.77N 120.66W
12/16/2012 M4.0 INCH CHELAN WA TRAINED SPOTTER

COCORAHS WA-CH-33

0700 AM HEAVY SNOW BOUNDARY DAM 48.98N 117.36W
12/16/2012 M6.0 INCH PEND OREILLE WA CO-OP OBSERVER

0700 AM HEAVY SNOW CLARKIA 47.02N 116.27W
12/16/2012 E4.0 INCH SHOSHONE ID CO-OP OBSERVER

0700 AM HEAVY SNOW 4 NE DEER PARK 48.00N 117.38W
12/16/2012 M4.0 INCH SPOKANE WA TRAINED SPOTTER

COCORAHS WA-SP-32

0800 AM HEAVY SNOW HOLDEN VILLAGE 48.20N 120.77W
12/16/2012 M7.0 INCH CHELAN WA CO-OP OBSERVER

0800 AM HEAVY SNOW FERNAN LAKE VILLAGE 47.11N 116.40W
12/16/2012 E4.0 INCH BENEWAH ID CO-OP OBSERVER

0800 AM HEAVY SNOW STEHEKIN 48.35N 120.73W
12/16/2012 M4.5 INCH CHELAN WA CO-OP OBSERVER

0815 AM HEAVY SNOW 12 N LEAVENWORTH 47.76N 120.66W
12/16/2012 M4.0 INCH CHELAN WA PUBLIC

COCORAHS REPORT CH-33

0815 AM HEAVY SNOW 4 NE DEER PARK 48.00N 117.37W
12/16/2012 M4.0 INCH SPOKANE WA PUBLIC

COCORAHS REPORT SP-32


&&

$$

JFOX

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KPIH [161617]: Preliminary Local Storm Report

NWUS55 KPIH 161617
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
917 AM MST SUN DEC 16 2012

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

0847 AM SNOW HAILEY 43.51N 114.30W
12/16/2012 M1.0 INCH BLAINE ID TRAINED SPOTTER

OVERNIGHT TOTAL. NO LONGER SNOWING. ELEVATION 5300 FEET.


&&

$$

JMESSICK

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KPIH [161616]: Preliminary Local Storm Report

NWUS55 KPIH 161616
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
916 AM MST SUN DEC 16 2012

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

0847 AM SNOW 2 SW VICTOR 43.58N 111.14W
12/16/2012 M4.0 INCH TETON ID TRAINED SPOTTER

OVERNIGHT TOTAL. STILL SNOWING AT TIME OF REPORT.
ELEVATION AROUND 6200 FEET.


&&

$$

JMESSICK

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KPUB [161613]: Preliminary Local Storm Report

NWUS55 KPUB 161613
LSRPUB

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PUEBLO CO
913 AM MST SUN DEC 16 2012

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

0645 AM HEAVY SNOW 1 SSE WOLF CREEK PASS 37.47N 106.79W
12/16/2012 M42.0 INCH MINERAL CO TRAINED SPOTTER

42 INCHES OF SNOW DURING PREVIOUS 72 HOURS


&&

$$

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KDLH [161605]: Preliminary Local Storm Report

NWUS53 KDLH 161605
LSRDLH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
1005 AM CST SUN DEC 16 2012

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

0900 AM SNOW 2 SE WABANA LAKE 47.41N 93.49W
12/16/2012 M2.5 INCH ITASCA MN TRAINED SPOTTER


&&

$$

SGOHDE

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KMSO [161556]: Preliminary Local Storm Report

NWUS55 KMSO 161556
LSRMSO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
855 AM MST SUN DEC 16 2012

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

0700 AM SNOW 3 S WHITE PINE 47.69N 115.48W
12/16/2012 M1.5 INCH SANDERS MT MESONET

REPORTED AT COCORAHS STATION 5994S SNOW
DURATION 24 HOURS

&&

$$

IRIS SYSTEM

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KPIH [161555]: Preliminary Local Storm Report

NWUS55 KPIH 161555
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
855 AM MST SUN DEC 16 2012

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

0847 AM SNOW 2 N CHUBBUCK 42.95N 112.46W
12/16/2012 U0.0 INCH BANNOCK ID TRAINED SPOTTER

ICY ROAD CONDTIONS ON NORTHBOUND INTERSTATE 15 AT MILE
MARKER 73.


&&

$$

JMESSICK

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KMSO [161555]: Preliminary Local Storm Report

NWUS55 KMSO 161555
LSRMSO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
855 AM MST SUN DEC 16 2012

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

0730 AM SNOW 4 NW NOXON 48.03N 115.85W
12/16/2012 M2.2 INCH SANDERS MT MESONET

REPORTED AT COCORAHS STATION 5126C SNOW
DURATION 24 HOURS

&&

$$

IRIS SYSTEM

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KMSO [161555]: Preliminary Local Storm Report

NWUS55 KMSO 161555
LSRMSO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
854 AM MST SUN DEC 16 2012

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

0830 AM SNOW 10 SSE OROGRANDE 45.57N 115.45W
12/16/2012 M1.9 INCH IDAHO ID MESONET

REPORTED AT COOP STATION DXEI1 SNOW DURATION
24 HOURS

&&

$$

IRIS SYSTEM

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MESO: Mesoscale Discussion 2161

ACUS11 KWNS 161554
SWOMCD
SPC MCD 161554
MSZ000-LAZ000-TXZ000-161730-

MESOSCALE DISCUSSION 2161
NWS STORM PREDICTION CENTER NORMAN OK
0954 AM CST SUN DEC 16 2012

AREAS AFFECTED...SE TX...SW/CENTRAL LA...SW/CENTRAL MS

CONCERNING...SEVERE THUNDERSTORM WATCH 682...

VALID 161554Z - 161730Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 682
CONTINUES.

SUMMARY...A PRE-FRONTAL BAND OF STRONG/SEVERE STORMS WILL PERSIST
FOR THE NEXT SEVERAL HOURS WITH THE POTENTIAL FOR ISOLATED DAMAGING
WINDS. THE WIND THREAT MAY ALSO SPREAD INTO SW/CENTRAL MS BY MIDDAY
AS THE LOW LEVELS WARM/MOISTEN.

DISCUSSION...AN EXTENSIVE PRE-FRONTAL BAND OF THUNDERSTORMS IS
MOVING SLOWLY SEWD ON WEAK CONVECTIVE OUTFLOW...WHILE INDIVIDUAL
CELLS MOVE QUICKLY ENEWD ALONG THE LINE. THE PRESENCE OF A MOIST
BOUNDARY LAYER /MID-UPPER 60S DEWPOINTS/ AHEAD OF THE STORMS FROM SE
TX INTO LA WILL SUPPORT REGENERATION OF STORMS ALONG THE COMPOSITE
OUTFLOW BOUNDARY THROUGH EARLY AFTERNOON. ADDITIONALLY...A FEW
STORMS COULD DEVELOP WITHIN THE WARM SECTOR AS THE BOUNDARY LAYER
WARMS/MOISTENS...AND THE RIGHT ENTRANCE REGION OF A STRONG UPPER JET
DEVELOPS ENEWD FROM TX TOWARD LA/MS. THE OVERALL SETUP STILL
APPEARS SUPPORTIVE OF PRIMARY EMBEDDED LINE SEGMENTS WITH AN
ATTENDANT RISK FOR ISOLATED DAMAGING WINDS...GIVEN MODEST
INSTABILITY S OF THE ONGOING STORMS AND LARGELY LINE-PARALLEL
DEEP-LAYER VERTICAL SHEAR. WHILE LOW-LEVEL SHEAR IS NOT
PARTICULARLY STRONG...ANY MORE DISCRETE STORMS THAT HAPPEN TO FORM S
OF THE BAND MAY POSE A MARGINAL TORNADO RISK.

..THOMPSON/CORFIDI.. 12/16/2012

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

ATTN...WFO...JAN...LIX...LCH...SHV...HGX...CRP...

LAT...LON 29169441 28369663 28549724 28749726 29209642 29629540
30279418 30879305 31419206 31929144 32239102 32459046
32888935 32638902 32048910 31219023 30339200 29169441

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KPIH [161548]: Preliminary Local Storm Report

NWUS55 KPIH 161548
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
848 AM MST SUN DEC 16 2012

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

0847 AM SNOW 1 W VICTOR 43.60N 111.13W
12/16/2012 M3.0 INCH TETON ID TRAINED SPOTTER

OVERNIGHT TOTAL. STILL SNOWING AT TIME OF REPORT.
ELEVATION AROUND 6200 FEET.


&&

$$

JMESSICK

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KDLH [161532]: Preliminary Local Storm Report

NWUS53 KDLH 161532
LSRDLH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
925 AM CST SUN DEC 16 2012

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

0730 AM SNOW 2 W BARNUM 46.50N 92.73W
12/16/2012 M1.5 INCH CARLTON MN COCORAHS

0900 AM SNOW 3 NNE FINLAND 47.45N 91.22W
12/16/2012 M0.8 INCH LAKE MN TRAINED SPOTTER

MIXED RAIN AND SNOW. 0.47IN PRECIPITATION.


&&

$$

SGOHDE

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KLBF [161530]: Preliminary Local Storm Report

NWUS53 KLBF 161530
LSRLBF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
930 AM CST SUN DEC 16 2012

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

0925 AM SNOW 1 W CURTIS 40.63N 100.53W
12/16/2012 M1.0 INCH FRONTIER NE PUBLIC

REPORT FURNISHED BY NERAIN

0925 AM SNOW 1 NE GRANT 40.85N 101.71W
12/16/2012 M0.3 INCH PERKINS NE PUBLIC

REPORT FURNISHED BY NERAIN

0925 AM SNOW 3 S GRANT 40.80N 101.73W
12/16/2012 M0.5 INCH PERKINS NE PUBLIC

REPORT FURNISHED BY NERAIN

0925 AM SNOW 8 SW MADRID 40.77N 101.65W
12/16/2012 M1.2 INCH PERKINS NE PUBLIC

REPORT FURNISHED BY NERAIN


&&

$$

CDC

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KMFR [161514]: Preliminary Local Storm Report

NWUS56 KMFR 161514
LSRMFR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
714 AM PST SUN DEC 16 2012

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

0714 AM HEAVY RAIN NE BROOKINGS 42.06N 124.29W
12/16/2012 M0.74 INCH CURRY OR TRAINED SPOTTER

24 HOUR ACCUMULATION


&&

$$

BUNKER

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KDLH [161514]: Preliminary Local Storm Report

NWUS53 KDLH 161514
LSRDLH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
914 AM CST SUN DEC 16 2012

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

0800 AM SNOW 3 S NORTHOME 47.84N 94.26W
12/16/2012 M4.0 INCH ITASCA MN TRAINED SPOTTER

0807 AM SNOW 7 NE TOGO 47.89N 93.05W
12/16/2012 M3.0 INCH ST. LOUIS MN CO-OP OBSERVER

0830 AM SNOW 7 NW BRAINERD 46.43N 94.30W
12/16/2012 E4.2 INCH CROW WING MN TRAINED SPOTTER


&&

$$

SGOHDE

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KOTX [161502]: Preliminary Local Storm Report...summary

NWUS56 KOTX 161502
LSROTX

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE SPOKANE WA
702 AM PST SUN DEC 16 2012

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

0900 PM HEAVY SNOW WNW MANSFIELD 47.81N 119.64W
12/15/2012 E4.0 INCH DOUGLAS WA TRAINED SPOTTER

PAST 8 HOURS

0900 PM SNOW BRIDGEPORT 48.01N 119.67W
12/15/2012 M0.3 INCH DOUGLAS WA CO-OP OBSERVER

CHIEF JOSEPH DAM.

0940 PM SNOW MAZAMA 48.58N 120.39W
12/15/2012 E2.0 INCH OKANOGAN WA PUBLIC

1200 AM SNOW Sacheen Lake 48.17N 117.31W
12/16/2012 M2.4 INCH PEND OREILLE WA CO-OP OBSERVER

1201 AM SNOW OKANOGAN 48.37N 119.58W
12/16/2012 E1.7 INCH OKANOGAN WA LAW ENFORCEMENT

OKANOGAN CO. SHERIFF

1201 AM SNOW ST. MARIES 47.31N 116.57W
12/16/2012 M1.5 INCH BENEWAH ID LAW ENFORCEMENT

BENEWAH CO. SHERIFF

1201 AM SNOW PULLMAN 46.73N 117.16W
12/16/2012 M1.3 INCH WHITMAN WA LAW ENFORCEMENT

WHITMAN CO. SHERIFF

1201 AM SNOW MOSCOW 46.73N 117.00W
12/16/2012 M0.9 INCH LATAH ID LAW ENFORCEMENT

LATAH CO. SHERIFF

1201 AM SNOW 1 E DISHMAN 47.66N 117.25W
12/16/2012 E1.5 INCH SPOKANE WA PUBLIC

ON EAST MISSION IN SPOKANE VALLEY. REPORTY VIA FACEBOOK.

1201 AM SNOW DEER PARK 47.96N 117.43W
12/16/2012 E2.0 INCH SPOKANE WA PUBLIC

AND STILL SNOWING. REPORT VIA FACEBOOK.

1201 AM SNOW 1 ESE DEER PARK 47.96N 117.41W
12/16/2012 E3.5 INCH SPOKANE WA PUBLIC

REPORT VIA FACEBOOK

1201 AM SNOW MALAGA 47.37N 120.20W
12/16/2012 E1.5 INCH CHELAN WA PUBLIC

REPORT VIA FACEBOOK

1201 AM SNOW 3 NW AIRWAY HEIGHTS 47.68N 117.63W
12/16/2012 M2.2 INCH SPOKANE WA OFFICIAL NWS OBS

WFO SPOKANE

1201 AM SNOW 1 N ELK 48.02N 117.27W
12/16/2012 E2.0 INCH SPOKANE WA PUBLIC

NORTH OF ELK NEAR SPOKANE COUNTY LINE. STILL SNOWING.
REPORT VIA FACEBOOK.

1230 AM SNOW 2 W MEAD 47.77N 117.40W
12/16/2012 E2.5 INCH SPOKANE WA PUBLIC

REPORT VIA TWITTER

0100 AM SNOW MOSES LAKE 47.12N 119.29W
12/16/2012 E1.3 INCH GRANT WA LAW ENFORCEMENT

WASHINGTON STATE PATROL, MOSES LAKE

0400 AM SNOW 3 NW AIRWAY HEIGHTS 47.68N 117.63W
12/16/2012 M2.6 INCH SPOKANE WA CO-OP OBSERVER

WFO SPOKANE

0400 AM SNOW 3 SE AIRWAY HEIGHTS 47.61N 117.54W
12/16/2012 M2.2 INCH SPOKANE WA OFFICIAL NWS OBS

SPOKANE INTERNATIONAL AIRPORT

0600 AM HEAVY SNOW 9 N NEWMAN LAKE 47.91N 117.11W
12/16/2012 E5.0 INCH SPOKANE WA PUBLIC

MOUNT SPOKANE SKI AREA.

0600 AM SNOW 7 E CHEWELAH 48.28N 117.57W
12/16/2012 E3.0 INCH STEVENS WA PUBLIC

AT 49 DEGREES NORTH SKI AREA LODGE.

0600 AM SNOW LOUP LOUP CAMPGROUND 48.40N 119.90W
12/16/2012 E3.0 INCH OKANOGAN WA PUBLIC

LOUP LOUP SKI AREA

0600 AM HEAVY SNOW LOOKOUT PASS 47.46N 115.69W
12/16/2012 E6.0 INCH SHOSHONE ID PUBLIC

0600 AM SNOW 3 S KELLOGG 47.49N 116.12W
12/16/2012 E4.0 INCH SHOSHONE ID PUBLIC

SILVER MOUNTAIN

0600 AM SNOW 10 SSW WENATCHEE 47.30N 120.42W
12/16/2012 E3.0 INCH CHELAN WA PUBLIC

MISSION RIDGE SKI AREA

0600 AM HEAVY SNOW 3 W COLBURN 48.38N 116.60W
12/16/2012 E7.0 INCH BONNER ID PUBLIC

SCHWEITZER RESORT

0626 AM SNOW 4 N COEUR D'ALENE 47.75N 116.80W
12/16/2012 M3.5 INCH KOOTENAI ID TRAINED SPOTTER

PAST 10 HOURS.

0630 AM SNOW 5 SW OMAK 48.37N 119.61W
12/16/2012 M2.1 INCH OKANOGAN WA TRAINED SPOTTER

0641 AM SNOW FOUR LAKES 47.56N 117.59W
12/16/2012 M3.0 INCH SPOKANE WA NWS EMPLOYEE


&&

$$

MAT

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KFGF [161433]: Preliminary Local Storm Report

NWUS53 KFGF 161433
LSRFGF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
833 AM CST SUN DEC 16 2012

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

0800 AM SNOW SEBEKA 46.63N 95.09W
12/16/2012 M4.0 INCH WADENA MN CO-OP OBSERVER

24 HR SNOWFALL WHICH FELL ON TOP OF FREEZING RAIN. LIQUID
TOTAL IS 0.49.


&&

$$

WBARRETT

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KMPX [161427]: Preliminary Local Storm Report

NWUS53 KMPX 161427
LSRMPX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
827 AM CST SUN DEC 16 2012

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

0827 AM SNOW WINTHROP 44.54N 94.36W
12/16/2012 M1.0 INCH SIBLEY MN TRAINED SPOTTER


&&

$$

AJZ

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KMPX [161421]: Preliminary Local Storm Report

NWUS53 KMPX 161421
LSRMPX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
821 AM CST SUN DEC 16 2012

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

0820 AM SNOW ELK MOUND 44.88N 91.69W
12/16/2012 M0.7 INCH DUNN WI TRAINED SPOTTER

0.36 TOTAL LIQUID.


&&

$$

AJZ

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KBOI [161410]: Preliminary Local Storm Report

NWUS55 KBOI 161410
LSRBOI

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BOISE ID
710 AM MST SUN DEC 16 2012

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

0709 AM SNOW 2 ENE COUNCIL 44.74N 116.39W
12/16/2012 M4.5 INCH ADAMS ID TRAINED SPOTTER

TOTAL SNOWFALL OVERNIGHT.


&&

$$

BW

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KMPX [161404]: Preliminary Local Storm Report

NWUS53 KMPX 161404
LSRMPX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
804 AM CST SUN DEC 16 2012

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

0739 AM SNOW EAU CLAIRE 44.82N 91.49W
12/16/2012 M0.2 INCH EAU CLAIRE WI BROADCAST MEDIA

THREE INCHES ON THE GROUND.


&&

$$

AJZ

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KDLH [161356]: Preliminary Local Storm Report

NWUS53 KDLH 161356
LSRDLH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
756 AM CST SUN DEC 16 2012

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

0600 AM SNOW INTERNATIONAL FALLS 48.59N 93.41W
12/16/2012 M5.3 INCH KOOCHICHING MN OFFICIAL NWS OBS

STORM TOTAL

0600 AM SNOW 3 NE HERMANTOWN 46.84N 92.21W
12/16/2012 M0.6 INCH ST. LOUIS MN OFFICIAL NWS OBS

0630 AM SNOW 4 ESE CASINO 46.40N 94.46W
12/16/2012 M3.8 INCH CASS MN COCORAHS

0700 AM SNOW 2 SSE KELLY LAKE 47.39N 92.99W
12/16/2012 M1.8 INCH ST. LOUIS MN COCORAHS

0700 AM SNOW 10 NW SAND POINT LAKE 48.50N 92.64W
12/16/2012 M3.0 INCH ST. LOUIS MN CO-OP OBSERVER

0700 AM SNOW 3 E ORR 48.06N 92.76W
12/16/2012 M3.5 INCH ST. LOUIS MN CO-OP OBSERVER

0700 AM SNOW 2 SSW KABETOGAMA 48.41N 93.05W
12/16/2012 M1.7 INCH ST. LOUIS MN TRAINED SPOTTER

0700 AM SNOW 3 ENE WRIGHT 46.68N 92.95W
12/16/2012 M0.8 INCH CARLTON MN TRAINED SPOTTER

0730 AM SNOW 1 SW BRAINERD 46.34N 94.21W
12/16/2012 M2.0 INCH CROW WING MN TRAINED SPOTTER

0.75 INCHES OF PRECIPITATION. MIX OF FREEZING RAIN AND
SNOW.

0730 AM SNOW 3 NE BRAINERD 46.39N 94.15W
12/16/2012 M3.3 INCH CROW WING MN TRAINED SPOTTER


&&

$$

SGOHDE

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KMPX [161339]: Preliminary Local Storm Report...summary

NWUS53 KMPX 161339
LSRMPX

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
739 AM CST SUN DEC 16 2012

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

0814 PM SNOW 3 W DONNELLY 45.70N 96.07W
12/15/2012 M1.8 INCH STEVENS MN TRAINED SPOTTER

STORM TOTAL

1139 PM SNOW MANKATO 44.17N 93.99W
12/15/2012 M0.5 INCH BLUE EARTH MN TRAINED SPOTTER

0658 AM SNOW CARLOS 45.97N 95.29W
12/16/2012 M2.0 INCH DOUGLAS MN TRAINED SPOTTER

TOTAL PRECIPITATION OF 0.44 INCHES WITH EIGHT INCHES ON
THE GROUND.

0739 AM SNOW MOTLEY 46.34N 94.64W
12/16/2012 M4.0 INCH MORRISON MN TRAINED SPOTTER


&&

$$

AJZ

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KMPX [161339]: Preliminary Local Storm Report

NWUS53 KMPX 161339
LSRMPX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
739 AM CST SUN DEC 16 2012

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

0739 AM SNOW MOTLEY 46.34N 94.64W
12/16/2012 M4.0 INCH MORRISON MN TRAINED SPOTTER


&&

$$

AJZ

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KMPX [161300]: Preliminary Local Storm Report

NWUS53 KMPX 161300
LSRMPX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
659 AM CST SUN DEC 16 2012

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

0658 AM SNOW CARLOS 45.97N 95.29W
12/16/2012 M2.0 INCH DOUGLAS MN TRAINED SPOTTER

TOTAL PRECIPITATION OF 0.44 INCHES WITH EIGHT INCHES ON
THE GROUND.


&&

$$

AJZ

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 161257
SWODY1
SPC AC 161255

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0655 AM CST SUN DEC 16 2012

VALID 161300Z - 171200Z

...THERE IS A SLGT RISK OF SVR TSTMS PORTIONS SE TX TO CENTRAL AL...

...SYNOPSIS...
PROGRESSIVE MID-UPPER LEVEL PATTERN FCST THROUGH DAY-1. SERIES OF
SHORTWAVES WILL CONTRIBUTE TO EWD SHIFT OF SYNOPTIC-SCALE TROUGHING
FROM ROCKIES/INTERMOUNTAIN W ACROSS GREAT PLAINS. SHORTWAVE TROUGHS
ARE EVIDENT ATTM IN MOISTURE CHANNEL IMAGERY OVER SERN CO/NERN
NM/NWRN TX PANHANDLE REGION...AND SOMEWHAT WEAKER ONE OVER LOWER
PECOS RIVER REGION OF W TX. EACH WILL EJECT ENEWD TO NEWD AND
WEAKEN TODAY WHILE ESSENTIALLY PHASING. THESE PERTURBATIONS SHOULD
REACH CENTRAL IL AND WRN TN RESPECTIVELY BY 00Z. MEANWHILE...
ANOTHER SHORTWAVE TROUGH CURRENTLY OVER WRN AZ WILL MOVE EWD TO SRN
HIGH PLAINS BY 00Z...THEN ARKLATEX REGION AROUND END OF PERIOD.
PERTURBATION NOW EVIDENT OVER ID IS FCST TO CONTINUE MOVING ESEWD
ACROSS NRN ROCKIES WITH SOME AMPLIFICATION PSBL...REACHING PORTIONS
KS...NEB AND SD BY END OF PERIOD.

AT SFC...RESIDUAL/QUASISTATIONARY FRONTAL ZONE HAS BEEN REINFORCED
ALL NIGHT BY CONVECTION OVER MID TN...NWRN AL...NRN MS...SERN AR AND
NRN LA. BOUNDARY EXTENDS SWWD ACROSS TX COASTAL PLAIN FROM NEAR LFK
TO BETWEEN VCT-SAT...THEN SSWWD BETWEEN MFE-LRD. FARTHER N...WEAK
COLD FRONT FROM IL SWWD ACROSS NRN OK WILL MOVE SLOWLY SEWD
TODAY...BUT SHOULD REMAIN WELL NW OF PRIMARY ZONE OF CONVECTIVE
POTENTIAL ASSOCIATED WITH SRN BOUNDARY. FARTHER S...WARM/MARINE
FRONT OVER LA COASTAL WATERS AND SE TX SHOULD MOVE NEWD/INLAND
THROUGH PERIOD...ACROSS SRN LA/MS/AL/FL PANHANDLE.

...SE TX TO MS/AL...
HEIGHT-GRADIENT ENHANCEMENTS S AND SE OF AFOREMENTIONED SHORTWAVE
TROUGHS WILL CONTRIBUTE TO CORRIDOR OF ENHANCED DEEP-LAYER WINDS AND
SHEAR OVER THIS SWATH THROUGHOUT PERIOD. MEANWHILE...LOW-LEVEL
CONVERGENCE WILL BE MAINTAINED INVOF REMNANT FRONTAL ZONE.
LOW-LEVEL WAA...MOISTURE ADVECTION AND MOISTURE TRANSPORT WILL
OCCURS S OF FRONT...RESULTING IN PROGRESSIVELY MORE NEWD/INLAND
PENETRATION OF HIGH-PW AIR MASS -- 1.5-1.75 INCHES -- NOW APPARENT
OVER NWRN GULF.

IN THIS REGIME...AT LEAST TWO PRIMARY ROUNDS OF CONVECTION WILL POSE
SOME SVR THREAT...MAINLY IN FORM OF DAMAGING GUSTS. TORNADO/HAIL
POTENTIAL IS MORE MRGL/CONDITIONAL OVER MOST OF AREA.

1. ONGOING RISK FROM SE TX ACROSS CENTRAL LA...SHIFTING INTO
PORTIONS WRN/CENTRAL MS DURING DAY. FOR MORE DETAILED/NEAR-TERM
GUIDANCE...REF SPC WW 682 AND ACCOMPANYING MESOSCALE DISCUSSIONS.

2. CONTINUED OR REJUVENATED POTENTIAL OVERNIGHT ACROSS PORTIONS SERN
LA AND SRN MS...EXPANDING/SHIFTING INTO CENTRAL/SRN AL AS LOW-LEVEL
AIR MASS MOISTENS/DESTABILIZES VIA ADVECTIVE PROCESSES. NEARLY
SFC-BASED EFFECTIVE INFLOW PARCELS SHOULD OVERSPREAD PROGRESSIVELY
LARGER PROPORTION OF THIS AREA OVERNIGHT...AS THETAE ADVECTION
OFFSETS DIABATIC SFC COOLING. MID-UPPER LEVEL WIND PROFILES WILL
STRENGTHEN WITH 65-85 KT 500-MB WINDS...AS WELL AS MEAN-WIND AND
DEEP-SHEAR VECTORS...ALIGNED NEARLY PARALLEL TO WSW-ENE ALIGNED
FRONTAL ZONE. SWLY LLJ ALSO IS FCST TO INTENSIFY OVERNIGHT AS IT
SHIFTS EWD ACROSS ERN AL...WITH OUTLOOK AREA ALONG ITS WRN RIM. AS
SUCH...LOW-LEVEL SHEAR SHOULD REMAIN FAVORABLE AFTER 06Z DESPITE
SOME VEERING OF SFC WINDS. RELATIVE MAX IN TORNADO PROBABILITIES
MAY APPEAR OVER PORTIONS ERN MS AND CENTRAL/SRN AL OVERNIGHT BASED
ON RELATED INCREASE IN SIZE OF BOUNDARY-LAYER HODOGRAPHS.

...AFTERNOON/EARLY EVENING...SRN AL AND WRN FL PANHANDLE REGION...
ALTHOUGH MAIN SVR THREAT APPEARS TO BE FARTHER N AND NW...AT LEAST
MRGL POTENTIAL FOR STG/SVR TSTMS MAY EXIST ALONG AND S OF
WARM/MARINE FRONT MOVING INLAND. FCST SOUNDINGS SUGGEST INCREASING
THETAE WITH WARM FROPA...COMBINED WITH SFC DIABATIC HEATING...SHOULD
OFFSET WEAK MID-UPPER LEVEL LAPSE RATES ENOUGH TO YIELD WEAKLY
CAPPED MLCAPE 250-800 J/KG THIS AFTERNOON. SUFFICIENT VEERING WITH
HEIGHT SHOULD EXIST ALONG WARM FRONT AND SWD NEAR AL/WRN FL
PANHANDLE COAST TO SUPPORT CURVED LOW-LEVEL HODOGRAPHS AND AROUND
150-200 J/KG EFFECTIVE SRH...AMIDST 40-50 KT EFFECTIVE SHEAR
MAGNITUDES. AS SUCH...OCNL SUPERCELL STRUCTURES MAY
DEVELOP...SUPPORTING LOBE OF AT LEAST MRGL TORNADO POTENTIAL.

...PORTIONS LOWER OH VALLEY REGION...
NARROW CORRIDOR OF AT LEAST MRGL MUCAPE WILL DEVELOP FROM THIS
AFTERNOON ONWARD ACROSS CORRIDOR FROM WRN TN NEWD OVER PORTIONS OH
RIVER REGION...INITIATED BY AFTERNOON/DIABATIC SFC HEATING THEN
MAINTAINED BY LOW-LEVEL THETAE ADVECTION BETWEEN FRONTAL ZONES.
HEIGHT FALLS AHEAD OF NWRN TROUGH SHOULD IMPINGE ON THIS AIR MASS
MAINLY DURING LATTER HALF OF PERIOD...WITH TSTMS POTENTIAL PRIMARILY
LATE AFTERNOON ONWARD. ISOLATED HAIL NEAR SVR LEVELS IS
POSSIBLE...THOUGH ORGANIZED SVR EVENT APPEARS UNLIKELY ATTM.

..EDWARDS/SMITH.. 12/16/2012

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KGLD [161234]: Preliminary Local Storm Report

NWUS53 KGLD 161234
LSRGLD

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
534 AM MST SUN DEC 16 2012

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

0527 AM SNOW MCCOOK 40.20N 100.62W
12/16/2012 E2.0 INCH RED WILLOW NE LAW ENFORCEMENT

ESTIMATED 1-2 INCHES OF SNOW.


&&

$$

LUNDQUIST

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KGLD [161229]: Preliminary Local Storm Report

NWUS53 KGLD 161229
LSRGLD

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
529 AM MST SUN DEC 16 2012

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

0527 AM SNOW CULBERTSON 40.23N 100.84W
12/16/2012 M3.0 INCH HITCHCOCK NE CO-OP OBSERVER

0.22 INCHES OF LIQUID.


&&

$$

LUNDQUIST

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WATCHES: Severe Thunderstorm Watch Number 682

WWUS20 KWNS 161151
SEL2
SPC WW 161151
LAZ000-TXZ000-CWZ000-161900-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 682
NWS STORM PREDICTION CENTER NORMAN OK
550 AM CST SUN DEC 16 2012

THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

WESTERN...CENTRAL AND NORTHERN LOUISIANA
SOUTHEAST AND EAST TEXAS
COASTAL WATERS

EFFECTIVE THIS SUNDAY MORNING AND AFTERNOON FROM 550 AM UNTIL 100
PM CST.

HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 75
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 75
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 80 MILES SOUTHWEST
OF COLLEGE STATION TEXAS TO 40 MILES NORTH NORTHEAST OF NATCHEZ
MISSISSIPPI. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.

DISCUSSION...TSTMS FCST TO CONTINUE INCREASING IN COVERAGE AND
SPREAD FROM W-E ACROSS WW AREA...WHILE STRENGTHENING TO SVR LEVELS.
STG MID-UPPER WINDS -- E.G. 90 KT OBSERVED AROUND 6 KM AGL OVER LDB
PROFILER SITE -- WILL CONTRIBUTE TO FAVORABLE DEEP-LAYER SHEAR.
MEAN-WIND AND DEEP-SHEAR VECTORS WILL BE ALIGNED NEARLY PARALLEL TO
LOW-LEVEL FRONTAL/CONVERGENCE ZONE...SUPPORTING PREDOMINANT
QUASI-LINEAR AND CLUSTERED MODES...WITH LEWPS AND SMALL BOWS
POSSIBLE.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM
MOTION VECTOR 24035.


...EDWARDS

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MESO: Mesoscale Discussion 2160

ACUS11 KWNS 161100
SWOMCD
SPC MCD 161100
MSZ000-LAZ000-ARZ000-TXZ000-161230-

MESOSCALE DISCUSSION 2160
NWS STORM PREDICTION CENTER NORMAN OK
0500 AM CST SUN DEC 16 2012

AREAS AFFECTED...PORTIONS OF THE MIDDLE AND UPPER TX COASTAL PLAIN
INTO CENTRAL/NRN LA AND EXTREME SWRN-WEST CENTRAL MS

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE

VALID 161100Z - 161230Z

PROBABILITY OF WATCH ISSUANCE...60 PERCENT

SUMMARY...A SVR TSTM WATCH MAY BE NEEDED ACROSS THE MIDDLE AND UPPER
TX COASTAL PLAIN TO SWRN-WEST CENTRAL MS BY 12Z.

TSTMS ARE EXPECTED TO INCREASE IN COVERAGE AND INTENSITY THIS
MORNING /BY 12Z/ ACROSS THE WRN AND CENTRAL PORTION OF THE
DISCUSSION AREA...WITH STORMS ADVANCING ENEWD INTO LA AND EVENTUALLY
REACHING SWRN-WEST CENTRAL MS BETWEEN 16-18Z. SHEAR VECTORS
ORIENTED NEARLY PARALLEL TO A SURFACE BOUNDARY SUGGEST LEWPS AND
LINE SEGMENTS WILL BE THE PRIMARY STORM MODES WITH SOME SUPERCELLS
POSSIBLE GIVEN THE STRENGTH OF THE SHEAR. THUS...DAMAGING WINDS
SHOULD BE THE PRIMARY THREAT...THOUGH A TORNADO CANNOT BE RULED OUT.

DISCUSSION...DESPITE WEAK LAPSE RATES...MILD/ABOVE NORMAL SURFACE
TEMPERATURES /UPPER 60S-LOWER 70S/ FOR MID DECEMBER ACROSS THE
DISCUSSION AREA FOR THIS TIME OF DAY COMBINED WITH DEWPOINTS IN THE
MID 60S TO AROUND 70 F ARE AIDING IN A MODERATELY UNSTABLE AIR MASS.
AT 10Z...OBJECTIVE ANALYSIS INDICATED MUCAPE RANGING FROM 1000 J/KG
IN SWRN LA TO 1500-2000 J/KG IN THE MID-UPPER TX COASTAL PLAIN.
TRENDS IN REGIONAL RADAR IMAGERY /SINCE 09Z/ SHOWED AN INCREASE IN
THE COVERAGE OF SHALLOW CONVECTION OVER SOUTHEAST TX INTO CENTRAL/
NRN LA. MEANWHILE...TSTMS HAD DEVELOPED SINCE 10Z FARTHER INLAND TO
THE W/NW OF A SURFACE BOUNDARY WHICH EXTENDED FROM DEEP S TX /INVOF
HEBBRONVILLE/ NNEWD TO BASTROP COUNTY AND THEN NEWD TO THE NW OF
LFK.

CONVECTION ALLOWING MODELS ARE IN AGREEMENT THAT THIS RECENT
INCREASE SHALLOW CONVECTION AND THE MORE RECENT TSTM DEVELOPMENT ARE
LIKELY THE BEGINNING STAGES OF A MORE SUBSTANTIAL UPTICK IN TSTM
COVERAGE/INTENSITY EXPECTED BY 12Z OVER THE TX PORTION OF THE
DISCUSSION AREA. THIS ACTIVITY IS IN RESPONSE TO INCREASING UPWARD
VERTICAL MOTION SPREADING ENEWD IN ADVANCE OF A PROGRESSIVE THOUGH
SOMEWHAT WEAK UPSTREAM SHORTWAVE TROUGH...NOW LOCATED OVER SW TX.
THIS FEATURE IS EXPECTED TO REACH CENTRAL TO EAST TX BY 18Z...WITH
WEAK HEIGHT FALLS SUGGESTING A FURTHER INCREASE IN TSTMS WILL BE
LIKELY. STORMS SHOULD REACH SWRN-WEST CENTRAL MS BETWEEN
16-18Z...SUGGESTING THIS REGION MAY BE INCLUDED IN A WATCH. STRONG
SWLY FLOW ALOFT IS MORE THAN SUFFICIENT TO SUPPORT ORGANIZED
STORMS...WITH DAMAGING WINDS BEING THE PRIMARY THREAT. SMALL
HODOGRAPH CURVATURE SUGGESTS A LESSER THREAT FOR A TORNADO...THOUGH
THIS THREAT CANNOT BE RULED OUT.

..PETERS/EDWARDS.. 12/16/2012

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

ATTN...WFO...JAN...LIX...LCH...SHV...HGX...FWD...EWX...

LAT...LON 29429697 30659734 31449608 32039463 32839295 33079078
32279047 31109082 30269325 29149584 29059651 29429697

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KSTO [161048]: Preliminary Local Storm Report

NWUS56 KSTO 161048
LSRSTO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SACRAMENTO CA
247 AM PST SUN DEC 16 2012

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

0230 AM SNOW 2 NW SIMS 41.08N 122.38W
12/16/2012 M4.0 INCH SHASTA CA TRAINED SPOTTER

2 INCHES SINCE 6PM YESTERDAY

&&

$$

IRIS SYSTEM

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DAY48SVR: Nws Storm Prediction Center Norman Ok

ACUS48 KWNS 161017
SWOD48
SPC AC 161016

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0416 AM CST SUN DEC 16 2012

VALID 191200Z - 241200Z

...DISCUSSION...
DAY 4-5...MODELS HAVE CONVERGED ON AMPLITUDE AND TIMING OF A STRONG
PROGRESSIVE SHORTWAVE TROUGH THAT WILL MOVE THROUGH THE SRN PLAINS
DAY 4 /THURSDAY/...LOWER MS VALLEY THURSDAY NIGHT AND INTO THE OH
VALLEY AND SERN STATES DAY 5. THIS SYSTEM WILL INDUCE A STRONG
SURFACE LOW THAT WILL MOVE FROM KS/OK THURSDAY INTO THE OH VALLEY
FRIDAY. COLD FRONT WILL SWEEP EWD THROUGH THE LOWER MS VALLEY AND
SERN STATES IN ASSOCIATION WITH THIS FEATURE. PARTIALLY MODIFIED
GULF AIR WILL ADVECT NWD ALONG A STRONG LLJ RESULTING IN
DESTABILIZATION. HOWEVER...INSTABILITY WILL LIKELY REMAIN MARGINAL
DUE TO EXPECTED WEAK LAPSE RATES. DESPITE THE LIMITED
INSTABILITY...EXPECT A LINE OF FORCED CONVECTION TO DEVELOP THURSDAY
NIGHT OVER THE LOWER MS VALLEY AND CONTINUE EWD THROUGH THE TN
VALLEY AND SERN STATES DAY 5. GIVEN THE STRENGTH OF THE NEAR-SFC AND
DEEP-LAYER FLOW...DAMAGING WIND MAY BE A THREAT AS THE ACTIVITY
DEVELOPS EWD.

..DIAL.. 12/16/2012

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KOTX [161004]: Preliminary Local Storm Report...summary

NWUS56 KOTX 161004
LSROTX

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE SPOKANE WA
204 AM PST SUN DEC 16 2012

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

0400 PM HEAVY SNOW 6 NNW PLAIN 47.83N 120.71W
12/15/2012 E4.0 INCH CHELAN WA PUBLIC

FISH LAKE WEB CAM

0619 PM SNOW 8 W CHELAN 47.85N 120.20W
12/15/2012 M3.0 INCH CHELAN WA TRAINED SPOTTER

3 INCHES OF SNOW THIS AFTERNOON. STILL LIGHT SNOW
FALLING.

0900 PM SNOW BRIDGEPORT 48.01N 119.67W
12/15/2012 M0.3 INCH DOUGLAS WA CO-OP OBSERVER

CHIEF JOSEPH DAM.

0900 PM HEAVY SNOW WNW MANSFIELD 47.81N 119.64W
12/15/2012 E4.0 INCH DOUGLAS WA TRAINED SPOTTER

PAST 8 HOURS

0940 PM SNOW MAZAMA 48.58N 120.39W
12/15/2012 E2.0 INCH OKANOGAN WA PUBLIC

1201 AM SNOW 3 SE AIRWAY HEIGHTS 47.61N 117.54W
12/16/2012 M2.0 INCH SPOKANE WA OFFICIAL NWS OBS

SPOKANE INTERNATIONAL AIRPORT

1201 AM SNOW OKANOGAN 48.37N 119.58W
12/16/2012 E1.7 INCH OKANOGAN WA LAW ENFORCEMENT

OKANOGAN CO. SHERIFF

1201 AM SNOW ST. MARIES 47.31N 116.57W
12/16/2012 M1.5 INCH BENEWAH ID LAW ENFORCEMENT

BENEWAH CO. SHERIFF

1201 AM SNOW PULLMAN 46.73N 117.16W
12/16/2012 M1.3 INCH WHITMAN WA LAW ENFORCEMENT

WHITMAN CO. SHERIFF

1201 AM SNOW MOSCOW 46.73N 117.00W
12/16/2012 M0.9 INCH LATAH ID LAW ENFORCEMENT

LATAH CO. SHERIFF

1201 AM SNOW 1 E DISHMAN 47.66N 117.25W
12/16/2012 E1.5 INCH SPOKANE WA PUBLIC

ON EAST MISSION IN SPOKANE VALLEY. REPORTY VIA FACEBOOK.

1201 AM SNOW DEER PARK 47.96N 117.43W
12/16/2012 E2.0 INCH SPOKANE WA PUBLIC

AND STILL SNOWING. REPORT VIA FACEBOOK.

1201 AM SNOW 1 ESE DEER PARK 47.96N 117.41W
12/16/2012 E3.5 INCH SPOKANE WA PUBLIC

REPORT VIA FACEBOOK

1201 AM SNOW MALAGA 47.37N 120.20W
12/16/2012 E1.5 INCH CHELAN WA PUBLIC

REPORT VIA FACEBOOK

1201 AM SNOW 3 NW AIRWAY HEIGHTS 47.68N 117.63W
12/16/2012 M2.2 INCH SPOKANE WA OFFICIAL NWS OBS

WFO SPOKANE

1201 AM SNOW 1 N ELK 48.02N 117.27W
12/16/2012 E2.0 INCH SPOKANE WA PUBLIC

NORTH OF ELK NEAR SPOKANE COUNTY LINE. STILL SNOWING.
REPORT VIA FACEBOOK.

1230 AM SNOW 2 W MEAD 47.77N 117.40W
12/16/2012 E2.5 INCH SPOKANE WA PUBLIC

REPORT VIA TWITTER

0100 AM SNOW MOSES LAKE 47.12N 119.29W
12/16/2012 E1.3 INCH GRANT WA LAW ENFORCEMENT

WASHINGTON STATE PATROL, MOSES LAKE


&&

$$

MAT

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KOTX [160951]: Preliminary Local Storm Report...summary

NWUS56 KOTX 160951
LSROTX

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE SPOKANE WA
151 AM PST SUN DEC 16 2012

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

0400 PM HEAVY SNOW 6 NNW PLAIN 47.83N 120.71W
12/15/2012 E4.0 INCH CHELAN WA PUBLIC

FISH LAKE WEB CAM

0619 PM SNOW 8 W CHELAN 47.85N 120.20W
12/15/2012 M3.0 INCH CHELAN WA TRAINED SPOTTER

3 INCHES OF SNOW THIS AFTERNOON. STILL LIGHT SNOW
FALLING.

0900 PM SNOW BRIDGEPORT 48.01N 119.67W
12/15/2012 M0.3 INCH DOUGLAS WA CO-OP OBSERVER

CHIEF JOSEPH DAM.

0900 PM HEAVY SNOW WNW MANSFIELD 47.81N 119.64W
12/15/2012 E4.0 INCH DOUGLAS WA TRAINED SPOTTER

PAST 8 HOURS

0940 PM SNOW MAZAMA 48.58N 120.39W
12/15/2012 E2.0 INCH OKANOGAN WA PUBLIC

1201 AM SNOW MOSCOW 46.73N 117.00W
12/16/2012 M0.9 INCH LATAH ID LAW ENFORCEMENT

LATAH CO. SHERIFF

1201 AM SNOW PULLMAN 46.73N 117.16W
12/16/2012 M1.3 INCH WHITMAN WA LAW ENFORCEMENT

WHITMAN CO. SHERIFF

1201 AM SNOW ST. MARIES 47.31N 116.57W
12/16/2012 M1.5 INCH BENEWAH ID LAW ENFORCEMENT

BENEWAH CO. SHERIFF

1201 AM SNOW OKANOGAN 48.37N 119.58W
12/16/2012 E1.7 INCH OKANOGAN WA LAW ENFORCEMENT

OKANOGAN CO. SHERIFF

1201 AM SNOW 3 SE AIRWAY HEIGHTS 47.61N 117.54W
12/16/2012 M2.0 INCH SPOKANE WA OFFICIAL NWS OBS

SPOKANE INTERNATIONAL AIRPORT

1201 AM SNOW 3 NW AIRWAY HEIGHTS 47.68N 117.63W
12/16/2012 M2.2 INCH SPOKANE WA OFFICIAL NWS OBS

WFO SPOKANE

1230 AM SNOW 2 W MEAD 47.77N 117.40W
12/16/2012 E2.5 INCH SPOKANE WA PUBLIC

REPORT VIA TWITTER

0100 AM SNOW MOSES LAKE 47.12N 119.29W
12/16/2012 E1.3 INCH GRANT WA LAW ENFORCEMENT

WASHINGTON STATE PATROL, MOSES LAKE


&&

$$

MAT

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KPUB [160931]: Preliminary Local Storm Report

NWUS55 KPUB 160931
LSRPUB

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PUEBLO CO
231 AM MST SUN DEC 16 2012

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

0225 AM SNOW 1 SSE CRESTONE 37.98N 105.69W
12/16/2012 M2.6 INCH SAGUACHE CO TRAINED SPOTTER

NEW SNOWFALL IN PAST 2 HOURS. TOTAL SNOW DEPTH ON THE
GROUND 7 INCHES.


&&

$$

LW

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KREV [160925]: Preliminary Local Storm Report

NWUS55 KREV 160925
LSRREV

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RENO NV
125 AM PST SUN DEC 16 2012

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

0900 PM NON-TSTM WND GST 4 N CEDARVILLE 41.59N 120.17W
12/15/2012 M61.00 MPH MODOC CA MESONET


&&

$$

BBRONG

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KOTX [160909]: Preliminary Local Storm Report...summary

NWUS56 KOTX 160909
LSROTX

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE SPOKANE WA
109 AM PST SUN DEC 16 2012

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

0900 PM SNOW BRIDGEPORT 48.01N 119.67W
12/15/2012 M0.3 INCH DOUGLAS WA CO-OP OBSERVER

CHIEF JOSEPH DAM.

0900 PM HEAVY SNOW WNW MANSFIELD 47.81N 119.64W
12/15/2012 E4.0 INCH DOUGLAS WA TRAINED SPOTTER

PAST 8 HOURS

0940 PM SNOW MAZAMA 48.58N 120.39W
12/15/2012 E2.0 INCH OKANOGAN WA PUBLIC

1201 AM SNOW PULLMAN 46.73N 117.16W
12/16/2012 M1.3 INCH WHITMAN WA LAW ENFORCEMENT

WHITMAN CO. SHERIFF

1201 AM SNOW 3 NW AIRWAY HEIGHTS 47.68N 117.63W
12/16/2012 M2.2 INCH SPOKANE WA BROADCAST MEDIA

WFO SPOKANE

1201 AM SNOW ST. MARIES 47.31N 116.57W
12/16/2012 M1.5 INCH BENEWAH ID LAW ENFORCEMENT

BENEWAH CO. SHERIFF

1201 AM SNOW 3 SE AIRWAY HEIGHTS 47.61N 117.54W
12/16/2012 M2.0 INCH SPOKANE WA BROADCAST MEDIA

SPOKANE INTERNATIONAL AIRPORT

1201 AM SNOW MOSCOW 46.73N 117.00W
12/16/2012 M0.9 INCH LATAH ID LAW ENFORCEMENT

LATAH CO. SHERIFF

1201 AM SNOW OKANOGAN 48.37N 119.58W
12/16/2012 E1.7 INCH OKANOGAN WA LAW ENFORCEMENT

OKANOGAN CO. SHERIFF

0100 AM SNOW MOSES LAKE 47.12N 119.29W
12/16/2012 E1.3 INCH GRANT WA LAW ENFORCEMENT

WASHINGTON STATE PATROL, MOSES LAKE


&&

$$

MAT

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KGLD [160853]: Preliminary Local Storm Report

NWUS53 KGLD 160853
LSRGLD

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
153 AM MST SUN DEC 16 2012

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

0120 AM SNOW TRENTON 40.17N 101.01W
12/16/2012 E1.5 INCH HITCHCOCK NE LAW ENFORCEMENT

REPORTED LOW VISIBILITIES AT A HILL NEAR TOWN. ESTIMATED
TIME OF REPORT.


&&

$$

LUNDQUIST

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KOTX [160845]: Preliminary Local Storm Report

NWUS56 KOTX 160845
LSROTX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPOKANE WA
1245 AM PST SUN DEC 16 2012

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

1200 AM SNOW 3 NW AIRWAY HEIGHTS 47.68N 117.63W
12/16/2012 M2.2 INCH SPOKANE WA OFFICIAL NWS OB

NWS SPOKANE

&&

$$

IRIS SYSTEM

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KOTX [160837]: Preliminary Local Storm Report...summary

NWUS56 KOTX 160837
LSROTX

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE SPOKANE WA
1237 AM PST SUN DEC 16 2012

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

0900 PM SNOW BRIDGEPORT 48.01N 119.67W
12/15/2012 M0.3 INCH DOUGLAS WA CO-OP OBSERVER

CHIEF JOSEPH DAM.

0900 PM HEAVY SNOW WNW MANSFIELD 47.81N 119.64W
12/15/2012 E4.0 INCH DOUGLAS WA TRAINED SPOTTER

PAST 8 HOURS

0940 PM SNOW MAZAMA 48.58N 120.39W
12/15/2012 E2.0 INCH OKANOGAN WA PUBLIC

1201 AM SNOW MOSCOW 46.73N 117.00W
12/16/2012 M0.9 INCH LATAH ID LAW ENFORCEMENT

LATAH CO. SHERIFF

1201 AM SNOW OKANOGAN 48.37N 119.58W
12/16/2012 E1.7 INCH OKANOGAN WA LAW ENFORCEMENT

OKANOGAN CO. SHERIFF

1201 AM SNOW PULLMAN 46.73N 117.16W
12/16/2012 M1.3 INCH WHITMAN WA LAW ENFORCEMENT

WHITMAN CO. SHERIFF

1201 AM SNOW 3 NW AIRWAY HEIGHTS 47.68N 117.63W
12/16/2012 M2.2 INCH SPOKANE WA BROADCAST MEDIA

WFO SPOKANE

1201 AM SNOW ST. MARIES 47.31N 116.57W
12/16/2012 M1.5 INCH BENEWAH ID LAW ENFORCEMENT

BENEWAH CO. SHERIFF

1201 AM SNOW 3 SE AIRWAY HEIGHTS 47.61N 117.54W
12/16/2012 M2.0 INCH SPOKANE WA BROADCAST MEDIA

SPOKANE INTERNATIONAL AIRPORT


&&

$$

MAT

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KOTX [160836]: Preliminary Local Storm Report...summary

NWUS56 KOTX 160836
LSROTX

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE SPOKANE WA
1236 AM PST SUN DEC 16 2012

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

0900 PM SLEET BRIDGEPORT 48.01N 119.67W
12/15/2012 M0.30 INCH DOUGLAS WA CO-OP OBSERVER

CHIEF JOSEPH DAM.

0900 PM HEAVY SNOW WNW MANSFIELD 47.81N 119.64W
12/15/2012 E4.0 INCH DOUGLAS WA TRAINED SPOTTER

PAST 8 HOURS

0940 PM SNOW MAZAMA 48.58N 120.39W
12/15/2012 E2.0 INCH OKANOGAN WA PUBLIC

1201 AM SNOW PULLMAN 46.73N 117.16W
12/16/2012 M1.3 INCH WHITMAN WA LAW ENFORCEMENT

WHITMAN CO. SHERIFF

1201 AM SNOW MOSCOW 46.73N 117.00W
12/16/2012 M0.9 INCH LATAH ID LAW ENFORCEMENT

LATAH CO. SHERIFF

1201 AM SNOW ST. MARIES 47.31N 116.57W
12/16/2012 M1.5 INCH BENEWAH ID LAW ENFORCEMENT

BENEWAH CO. SHERIFF

1201 AM SNOW 3 SE AIRWAY HEIGHTS 47.61N 117.54W
12/16/2012 M2.0 INCH SPOKANE WA BROADCAST MEDIA

SPOKANE INTERNATIONAL AIRPORT

1201 AM SNOW OKANOGAN 48.37N 119.58W
12/16/2012 E1.7 INCH OKANOGAN WA LAW ENFORCEMENT

OKANOGAN CO. SHERIFF

1201 AM SNOW 3 NW AIRWAY HEIGHTS 47.68N 117.63W
12/16/2012 M2.2 INCH SPOKANE WA BROADCAST MEDIA

WFO SPOKANE


&&

$$

MAT

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KLBF [160835]: Preliminary Local Storm Report

NWUS53 KLBF 160835
LSRLBF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
235 AM CST SUN DEC 16 2012

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

0234 AM SNOW IMPERIAL 40.52N 101.64W
12/16/2012 E1.5 INCH CHASE NE LAW ENFORCEMENT

SNOWFALL ESTIMATED. SNOWING LIGHTLY CURRENTLY.


&&

$$

CBUTTLER

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KOTX [160819]: Preliminary Local Storm Report

NWUS56 KOTX 160819
LSROTX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPOKANE WA
1219 AM PST SUN DEC 16 2012

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

0900 PM HEAVY SNOW WNW MANSFIELD 47.81N 119.64W
12/15/2012 E4.0 INCH DOUGLAS WA TRAINED SPOTTER

PAST 8 HOURS

0900 PM SLEET BRIDGEPORT 48.01N 119.67W
12/15/2012 M0.30 INCH DOUGLAS WA CO-OP OBSERVER

CHIEF JOSEPH DAM.

0940 PM SNOW MAZAMA 48.58N 120.39W
12/15/2012 E2.0 INCH OKANOGAN WA PUBLIC

1201 AM SNOW OKANOGAN 48.37N 119.58W
12/16/2012 E1.7 INCH OKANOGAN WA LAW ENFORCEMENT

OKANOGAN CO. SHERIFF

1201 AM SNOW 3 NW AIRWAY HEIGHTS 47.68N 117.63W
12/16/2012 M2.2 INCH SPOKANE WA BROADCAST MEDIA

WFO SPOKANE

1201 AM SNOW MOSCOW 46.73N 117.00W
12/16/2012 M0.9 INCH LATAH ID LAW ENFORCEMENT

LATAH CO. SHERIFF

1201 AM SNOW ST. MARIES 47.31N 116.57W
12/16/2012 M1.5 INCH BENEWAH ID LAW ENFORCEMENT

BENEWAH CO. SHERIFF

1201 AM SNOW 3 SE AIRWAY HEIGHTS 47.61N 117.54W
12/16/2012 M2.0 INCH SPOKANE WA BROADCAST MEDIA

SPOKANE INTERNATIONAL AIRPORT


&&

$$

MAT

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DAY3SVR: Nws Storm Prediction Center Norman Ok

ACUS03 KWNS 160811
SWODY3
SPC AC 160809

DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0209 AM CST SUN DEC 16 2012

VALID 181200Z - 191200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...

UPPER TROUGH WILL EXIT THE ERN U.S. SEABOARD WITH TRAILING PORTION
OF ATTENDANT COLD FRONT MOVING SWD THROUGH FL. UPSTREAM SHORTWAVE
TROUGH WILL AMPLIFY ACROSS THE CNTRL AND SRN ROCKIES RESULTING IN
DEEPENING OF A LEE CYCLONE OVER THE CNTRL AND SRN HIGH PLAINS.

...NRN CA THROUGH PACIFIC NW COASTS...

DESPITE LIMITED LOW LEVEL MOISTURE...STEEP LAPSE RATES ASSOCIATED
WITH VERY COLD AIR ALOFT /-35 C AT 500 MB/ WITHIN AMPLIFYING UPPER
TROUGH WILL CONTRIBUTE TO WEAK INSTABILITY AND SCATTERED COLD CORE
CONVECTION MOVING ONSHORE. LIGHTNING ACTIVITY IS MORE PROBABLE
DURING FIRST HALF OF THE DAY BEFORE UPPER LEVEL THERMAL THROUGH
SHIFTS EAST OF THE COAST.

...FL...

HEIGHT RISES WILL OCCUR OVER THE FL PENINSULA AS UPPER TROUGH MOVES
OFFSHORE AND A LOW AMPLITUDE RIDGE BUILDS FROM WEST. FORECAST
THERMODYNAMIC PROFILES INDICATE SIGNIFICANT DRYING ALOFT ASSOCIATED
WITH SUBSIDENCE SPREADING INTO THE REGION...WHICH IN CONJUNCTION
WITH ONLY WEAK FRONTAL FORCING SUGGEST THUNDERSTORM POTENTIAL WILL
REMAIN LIMITED.

..DIAL.. 12/16/2012

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KLBF [160715]: Preliminary Local Storm Report

NWUS53 KLBF 160715
LSRLBF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
115 AM CST SUN DEC 16 2012

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

0115 AM SNOW IMPERIAL 40.52N 101.64W
12/16/2012 E1.0 INCH CHASE NE LAW ENFORCEMENT

SNOWFALL ESTIMATED AT AROUND 1 INCH.


&&

$$

CBUTTLER

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KPSR [160704]: Preliminary Local Storm Report

NWUS55 KPSR 160704
LSRPSR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PHOENIX AZ
1204 AM MST SUN DEC 16 2012

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

1203 AM DENSE FOG 3 NW METRO CENTER 33.60N 112.15W
12/16/2012 E0.25 MILE MARICOPA AZ TRAINED SPOTTER


&&

EVENT NUMBER PSR1200336

$$

MP

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 160701
SWODY2
SPC AC 160700

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0100 AM CST SUN DEC 16 2012

VALID 171200Z - 181200Z

...THERE IS A SLGT RISK OF SVR TSTMS FROM PORTION S OF THE GULF
COASTAL STATES INTO THE CAROLINAS...

...SYNOPSIS...
BROAD SYNOPTIC TROUGH WILL HAVE EVOLVED OVER THE ERN U.S. MONDAY.
SERIES OF VORTICITY MAXIMA EMBEDDED WITHIN THIS REGIME WILL MOVE
ACROSS THE OH VALLEY AND SERN U.S. A SURFACE LOW IS FORECAST TO
DEVELOP AND LIFT NEWD THROUGH THE OH VALLEY IN ASSOCIATION WITH AN
EJECTING SHORTWAVE TROUGH NOW DROPPING INTO SRN CA. THE SRN
EXTENSION OF THIS TROUGH WILL AFFECT PORTIONS OF THE SERN U.S. COLD
FRONT TRAILING FROM SFC LOW WILL SWEEP THROUGH REMAINDER OF THE ERN
STATES...LIKELY EXTENDING FROM THE NERN U.S. COAST SWWD INTO THE NRN
GULF BY THE END OF THE PERIOD.

...PORTIONS OF THE GULF COASTAL STATES INTO THE CAROLINAS...

SWLY LLJ WILL LIKELY STRENGTHEN TO 40+ KT FROM GA INTO CAROLINAS IN
ASSOCIATION WITH HEIGHT FALLS ATTENDING PROGRESSIVE SHORTWAVE
TROUGH. MODIFIED CP AIR WITH LOW 60S DEWPOINTS WILL ADVECT NEWD
THROUGH PRE-FRONTAL WARM SECTOR AS FAR NORTH AS CNTRL SC AND SERN
NC...RESULTING IN MODEST BOUNDARY LAYER DESTABILIZATION. MLCAPE WILL
LIKELY REMAIN LIMITED /GENERALLY AOB 500 J/KG/ ESPECIALLY WITH NWD
EXTENT INTO WARM SECTOR DUE TO WIDESPREAD CLOUDS AND WEAK LAPSE
RATES. THE MARGINAL THERMODYNAMIC ENVIRONMENT APPEARS TO BE THE
PRIMARY LIMITING FACTOR. SHOWERS AND THUNDERSTORMS SHOULD CONTINUE
DEVELOPING WITHIN ZONE OF ASCENT ALONG CONVEYOR BELT FROM THE GULF
COASTAL STATES INTO THE CAROLINAS DURING THE DAY...THOUGH NAM AND
ECMWF SUGGEST A GRADUAL DECREASE IN CONVECTIVE COVERAGE AS ACTIVITY
ADVANCES EWD AND STRONGER FORCING MOVES TOWARD THE OH VALLEY. STORMS
WILL BE EMBEDDED WITHIN STRONG DEEP LAYER WIND PROFILES WITH
HODOGRAPHS AND VERTICAL SHEAR SUPPORTIVE OF ORGANIZATION INCLUDING
BOWING STRUCTURES AND SUPERCELLS. PRIMARY THREAT APPEARS TO BE
DAMAGING WIND WITH EWD ADVANCING CLUSTERS/LINE OF STORMS.

...TN AND OH VALLEY REGION...

MOISTURE WILL BE MORE LIMITED IN THIS REGION WITH DEWPOINTS FROM THE
50S OVER THE TN VALLEY TO 40S FARTHER NORTH. HOWEVER...COLD
TEMPERATURES ALOFT...STEEPENING MID LEVEL LAPSE RATES AND DIABATIC
WARMING MAY YIELD AT LEAST MARGINAL INSTABILITY WITH MLCAPE AOB 300
J/KG MONDAY AFTERNOON. CURRENT INDICATIONS ARE THAT SHOWERS AND
THUNDERSTORMS MAY BE ONGOING DURING THE MORNING OVER PORTIONS OF
THIS REGION. IN WAKE OF THIS ACTIVITY...A FEW STORMS MAY REDEVELOP
MONDAY AFTERNOON AS THE ATMOSPHERE DESTABILIZES...POSSIBLY AIDED BY
AT LEAST MODEST FORCING FOR ASCENT ATTENDING THE EJECTING SHORTWAVE
TROUGH. STRONG EFFECTIVE SHEAR WILL SUPPORT POTENTIAL FOR ORGANIZED
STORMS AND A CONDITIONAL SEVERE THREAT. IF IT BEGINS TO APPEAR MORE
INSTABILITY WILL DEVELOP THAN CURRENTLY ANTICIPATED...PORTIONS OF
THIS AREA MAY NEED TO BE INCLUDED IN A CATEGORICAL RISK IN LATER
OUTLOOKS.

..DIAL.. 12/16/2012

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KEKA [160611]: Preliminary Local Storm Report

NWUS56 KEKA 160611
LSREKA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EUREKA CA
1010 PM PST SAT DEC 15 2012

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

1200 PM SNOW 9 S LAYTONVILLE 39.54N 123.50W
12/15/2012 E2.0 INCH MENDOCINO CA TRAINED SPOTTER

1.5 TO 2 INCHES AT 2800 FT. 1 INCH REPORTED IN
LAYTONVILLE AND ON RATTLESNAKE SUMMIT. NO ACCUMULATION ON
ROADS.


&&

$$

AAD

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