Friday, December 7, 2012

KMSO [080456]: Preliminary Local Storm Report

NWUS55 KMSO 080456
LSRMSO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
956 PM MST FRI DEC 7 2012

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

0940 PM HEAVY SNOW 4 NW NOXON 48.04N 115.84W
12/07/2012 M13.4 INCH SANDERS MT TRAINED SPOTTER

HEAVY SNOW DURATION 30 HOURS

&&

$$

IRIS SYSTEM

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KMPX [080420]: Preliminary Local Storm Report

NWUS53 KMPX 080420
LSRMPX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1020 PM CST FRI DEC 07 2012

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

1020 PM SNOW KINGSTON 45.20N 94.31W
12/07/2012 M1.0 INCH MEEKER MN TRAINED SPOTTER


&&

$$

AJZ

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KTFX [080417]: Preliminary Local Storm Report

NWUS55 KTFX 080417
LSRTFX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
917 PM MST FRI DEC 07 2012

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

0915 PM SNOW CHOTEAU 47.81N 112.18W
12/07/2012 M1.0 INCH TETON MT TRAINED SPOTTER

1 INCH OF SNOW IN 25 MINUTES FROM A SNOW BAND


&&

$$

EMANUEL

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 071726
SWODY2
SPC AC 071725

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1125 AM CST FRI DEC 07 2012

VALID 081200Z - 091200Z

...NO SVR TSTM AREAS FORECAST...

...ARKLATEX/MID MS VALLEY...
AN UPPER-LEVEL TROUGH WILL DIG SEWD ACROSS THE NRN ROCKIES ON
SATURDAY. AT THE SFC...A FAST-MOVING COLD FRONT WILL MOVE SEWD INTO
THE CNTRL PLAINS AS A SFC LOW DEEPENS IN THE LEE OF THE ROCKIES.
AHEAD OF THE SFC LOW...MOISTURE WILL BE IN PLACE FROM EAST TX
EXTENDING ENEWD INTO THE TN VALLEY WHERE SFC DEWPOINTS WILL RANGE
FROM THE MID 50S TO AROUND 60 F. ON THE NRN EDGE OF THE MOIST
SECTOR...A 35 TO 45 KT LOW-LEVEL JET WILL DEVELOP AS THE SFC LOW
MOVES EWD INTO THE SRN PLAINS. WARM ADVECTION AND LIFT ASSOCIATED
WITH THE LOW-LEVEL JET SHOULD RESULT IN THUNDERSTORM DEVELOPMENT
LATE SATURDAY EVENING FROM THE ARKLATEX ENEWD INTO THE TN VALLEY.
FORECAST SOUNDINGS AT LITTLE ROCK AND MEMPHIS AT 06Z/SUN SHOW MLCAPE
VALUES OF 500 TO 1000 J/KG WITH 0-6 KM SHEAR VALUES AROUND 50 KT. IN
SPITE OF THE POOR LAPSE RATES...THE COMBINATION OF SHEAR AND
INSTABILITY MAY BE ENOUGH FOR A MARGINAL SEVERE THREAT AS STORM
COVERAGE INCREASES DURING THE OVERNIGHT PERIOD. HAIL WOULD LIKELY BE
THE PRIMARY THREAT DUE TO THE ELEVATED NATURE OF THE STORMS.

..BROYLES.. 12/07/2012

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KABR [071721]: Preliminary Local Storm Report

NWUS53 KABR 071721
LSRABR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
1121 AM CST FRI DEC 07 2012

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

1120 AM SNOW BLUNT 44.52N 99.99W
12/07/2012 M4.0 INCH HUGHES SD TRAINED SPOTTER

STILL LIGHTLY SNOWING


&&

EVENT NUMBER ABR1200496

$$

TMK

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KABR [071717]: Preliminary Local Storm Report

NWUS53 KABR 071717
LSRABR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
1117 AM CST FRI DEC 07 2012

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

1116 AM SNOW 12 SSW HARROLD 44.36N 99.83W
12/07/2012 M3.4 INCH HUGHES SD CO-OP OBSERVER

STILL LIGHTLY SNOWING


&&

EVENT NUMBER ABR1200495

$$

TMK

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KUNR [071644]: Preliminary Local Storm Report

NWUS53 KUNR 071644
LSRUNR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
944 AM MST FRI DEC 07 2012

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

0730 AM SNOW DOWNTOWN RAPID CITY 44.08N 103.23W
12/07/2012 M0.8 INCH PENNINGTON SD OFFICIAL NWS OBS

0.07 INCH SNOW WATER EQUIVALENT AT NWS RAPID CITY


&&

$$

CALDERON

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KUNR [071637]: Preliminary Local Storm Report...corrected

NWUS53 KUNR 071637
LSRUNR

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE RAPID CITY SD
937 AM MST FRI DEC 07 2012

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

0845 AM SNOW HOOVER 45.11N 103.27W
12/07/2012 M4.5 INCH BUTTE SD CO-OP OBSERVER


&&

$$

CALDERON

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KUNR [071636]: Preliminary Local Storm Report

NWUS53 KUNR 071636
LSRUNR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
936 AM MST FRI DEC 07 2012

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

0630 AM SNOW 1 NW PIEDMONT 44.24N 103.41W
12/07/2012 M2.5 INCH MEADE SD NWS EMPLOYEE

0.18 INCH SNOW WATER EQUIVALENT

0700 AM SNOW 9 SSE DOWNTOWN GILLETTE 44.16N 105.45W
12/07/2012 M1.0 INCH CAMPBELL WY TRAINED SPOTTER

0700 AM SNOW 4 ESE FAITH 44.99N 101.96W
12/07/2012 M1.5 INCH ZIEBACH SD TRAINED SPOTTER

0800 AM SNOW NEWELL 44.72N 103.42W
12/07/2012 M5.0 INCH BUTTE SD CO-OP OBSERVER

0815 AM SNOW NNE RED OWL 44.70N 102.55W
12/07/2012 M6.5 INCH MEADE SD CO-OP OBSERVER

0845 AM SNOW W HOOVER 45.11N 103.27W
12/07/2012 E0.0 INCH BUTTE SD CO-OP OBSERVER

0910 AM SNOW 13 NE NEWELL 44.84N 103.22W
12/07/2012 M4.0 INCH BUTTE SD TRAINED SPOTTER

0915 AM SNOW 1 NNW STONEVILLE 44.75N 102.66W
12/07/2012 M8.0 INCH MEADE SD TRAINED SPOTTER

0920 AM SNOW SSW UNION CENTER 44.56N 102.67W
12/07/2012 E2.0 INCH MEADE SD TRAINED SPOTTER

0925 AM SNOW 15 ESE CREIGHTON 44.20N 101.91W
12/07/2012 M1.0 INCH HAAKON SD TRAINED SPOTTER


&&

$$

CALDERON

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 071630
SWODY1
SPC AC 071628

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1028 AM CST FRI DEC 07 2012

VALID 071630Z - 081200Z

...NO SVR TSTM AREAS FORECAST...

...LOWER MS VALLEY...
WATER VAPOR IMAGERY SHOWS A WELL-DEFINED SHORTWAVE TROUGH OVER
NORTHWEST MEXICO AND PARTS OF AZ/NM. THIS SYSTEM WILL TRACK
EASTWARD ACROSS TX AND INTO THE LOWER MS VALLEY TONIGHT. WEAK
SOUTHERLY LOW LEVEL WINDS AHEAD OF THIS SYSTEM WILL SLOWLY
DESTABILIZE THE AIR MASS FROM NORTHEAST TX INTO WESTERN KY/TN.
PRESENT INDICATIONS ARE THAT A FEW THUNDERSTORMS WILL DEVELOP AFTER
DARK ALONG THIS CORRIDOR AS LOW LEVEL WARM ADVECTION STRENGTHENS.
WEAK CAPE VALUES WILL LIMIT UPDRAFT STRENGTH AND OVERALL SEVERE
THREAT.

..HART/DISPIGNA.. 12/07/2012

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KABR [071621]: Preliminary Local Storm Report

NWUS53 KABR 071621
LSRABR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
1020 AM CST FRI DEC 07 2012

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

1020 AM SNOW REE HEIGHTS 44.52N 99.20W
12/07/2012 M3.5 INCH HAND SD PUBLIC

STILL SNOWING


&&

EVENT NUMBER ABR1200494

$$

TMK

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KOTX [071619]: Preliminary Local Storm Report

NWUS56 KOTX 071619
LSROTX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPOKANE WA
819 AM PST FRI DEC 07 2012

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

1200 AM SNOW Sacheen Lake 48.17N 117.31W
12/07/2012 M2.1 INCH PEND OREILLE WA CO-OP OBSERVER

0700 AM HEAVY SNOW PRICHARD 3 ESE 47.64N 115.92W
12/07/2012 M4.9 INCH SHOSHONE ID CO-OP OBSERVER

0700 AM SNOW FIELDS SPRING S.P. 46.08N 117.17W
12/07/2012 M2.4 INCH ASOTIN WA CO-OP OBSERVER

0700 AM SNOW FIELDS SPRING S.P. 46.08N 117.17W
12/07/2012 M2.4 INCH ASOTIN WA CO-OP OBSERVER

0700 AM HEAVY SNOW SSE CLARK FORK 48.15N 116.18W
12/07/2012 M9.0 INCH BONNER ID TRAINED SPOTTER

22 HOUR SNOWFALL. SPOTTER BONNER 61


&&

$$

JCOTE

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KABR [071618]: Preliminary Local Storm Report

NWUS53 KABR 071618
LSRABR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
1018 AM CST FRI DEC 07 2012

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

1017 AM SNOW MILLER 44.52N 98.99W
12/07/2012 E3.0 INCH HAND SD LAW ENFORCEMENT

STILL SNOWING


&&

EVENT NUMBER ABR1200493

$$

TMK

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KFSD [071612]: Preliminary Local Storm Report

NWUS53 KFSD 071612
LSRFSD

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1012 AM CST FRI DEC 07 2012

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

0948 AM SNOW HURON 44.36N 98.22W
12/07/2012 M2.3 INCH BEADLE SD OFFICIAL NWS OBS

0955 AM SNOW LAKE PRESTON 44.36N 97.38W
12/07/2012 E2.0 INCH KINGSBURY SD COUNTY OFFICIAL

0957 AM SNOW DE SMET 44.39N 97.55W
12/07/2012 E2.5 INCH KINGSBURY SD EMERGENCY MNGR

1000 AM SNOW BROOKINGS 44.31N 96.79W
12/07/2012 E0.3 INCH BROOKINGS SD EMERGENCY MNGR


&&

$$

TRM

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KABR [071603]: Preliminary Local Storm Report

NWUS53 KABR 071603
LSRABR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
1003 AM CST FRI DEC 07 2012

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

0945 AM SNOW 6 SE HAYES 44.31N 100.94W
12/07/2012 M4.0 INCH STANLEY SD CO-OP OBSERVER


&&

EVENT NUMBER ABR1200492

$$

TMK

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KMSO [071601]: Preliminary Local Storm Report...summary

NWUS55 KMSO 071601
LSRMSO

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE MISSOULA MT
901 AM MST FRI DEC 7 2012

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

0710 AM SNOW 5 NW EAST PORTAL 47.45N 115.70W
12/07/2012 U10.0 INCH MINERAL MT PUBLIC

LOOKOUT SKI AREA REPORTED 10 INCHES IN THE
LAST 24 HOURS. SNOW DURATION 24 HOURS


0647 AM SNOW 7 SE HAPPYS INN 48.02N 115.03W
12/07/2012 U3.0 INCH LINCOLN MT DEPT OF HIGHWAY

MDOT REPORTED 3 INCHES ON US-2 FROM HAPPYS
INN TO MARION


0647 AM SNOW 7 NE HERON 48.15N 115.86W
12/07/2012 U4.0 INCH SANDERS MT DEPT OF HIGHWAY

MDOT REPORTED 4" ON MT-56 FROM NOXON TO BULL
LAKE


0647 AM SNOW 7 SSW KOOTENAI FALLS 48.35N 115.84W
12/07/2012 U6.0 INCH LINCOLN MT DEPT OF HIGHWAY

MDOT REPORTED 6" ON MT-56 FROM BULL LAKE TO
TROY


0647 AM SNOW 3 ENE SOMERS 48.10N 114.16W
12/07/2012 U2.0 INCH FLATHEAD MT DEPT OF HIGHWAY

MDOT REPORTED TRACE TO 2 INCHES ON MT-82
FROM SOMERS TO MT-35


0647 AM SNOW 1 SSE SWAN LAKE 47.92N 113.84W
12/07/2012 U2.0 INCH LAKE MT DEPT OF HIGHWAY

MDOT REPORTED TRACE TO 2 INCHES ON MT-83
FROM CONDON TO MT-35


0647 AM SNOW 1 SE YAKT 48.54N 115.96W
12/07/2012 U6.0 INCH LINCOLN MT DEPT OF HIGHWAY

MDOT REPORTED 2 TO 6 INCHES ON US-2 FROM
IDAHO LINE TO 11 MILES EAST OF TROY.


0647 AM SNOW 1 NW NOXON 48.01N 115.80W
12/07/2012 U4.0 INCH SANDERS MT DEPT OF HIGHWAY

MDOT REPORTED 4" ON MT-200 FROM IDAHO LINE
TO TROUT CREEK


0647 AM SNOW 5 SSE WOODS BAY 47.93N 114.03W
12/07/2012 U2.0 INCH LAKE MT DEPT OF HIGHWAY

MDOT REPORTED TRACE TO 2" ON MT-35 FROM
YELLOW BAY TO S-206


0600 AM SNOW LOST TRAIL PASS 45.69N 113.95W
12/07/2012 U6.0 INCH RAVALLI MT PUBLIC

LOST TRAIL SKI AREA REPORTED 6 INCHES IN THE
LAST 24 HOURS. SNOW DURATION 24 HOURS


0550 AM SNOW 3 E FLORENCE 46.63N 114.01W
12/07/2012 M2.4 INCH RAVALLI MT NWS EMPLOYEE

SNOW DURATION 10 HOURS


1140 PM SNOW 6 NE HERON 48.12N 115.85W
12/06/2012 M4.7 INCH SANDERS MT TRAINED SPOTTER

0.7 INCHES FELL FROM 7AM TO 4PM AND ANOTHER
4 INCHES FROM 4PM TO 11:40PM. SNOW DURATION
15 HOURS


1016 PM SNOW 4 NW NOXON 48.04N 115.84W
12/06/2012 M5.6 INCH SANDERS MT TRAINED SPOTTER

STARTED SNOWING AT 8AM, SNOW BEGAN TO
ACCUMULATE DURING THE AFTERNOON WITH 4
INCHES BETWEEN 6PM AND 10PM


0600 PM SNOW 2 NW HERON 48.08N 115.99W
12/06/2012 M2.8 INCH SANDERS MT COOP OBSERVER

24 HR OBSERVATION BUT SNOW DID NOT BEGIN
UNTIL AROUND 8AM. SNOW DURATION 12 HOURS



&&

$$

IRIS SYSTEM

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KMSO [071600]: Preliminary Local Storm Report

NWUS55 KMSO 071600
LSRMSO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
900 AM MST FRI DEC 7 2012

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

0647 AM SNOW 1 SSE PINNACLE 48.34N 113.64W
12/07/2012 U6.0 INCH FLATHEAD MT DEPT OF HIGHWAY

MDOT REPORTED 2 TO 6 INCHES ON US-2 FROM
WEST GLACIER TO MARIAS PASS

&&

$$

IRIS SYSTEM

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KMSO [071559]: Preliminary Local Storm Report

NWUS55 KMSO 071559
LSRMSO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
858 AM MST FRI DEC 7 2012

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

0647 AM SNOW 7 SE HAPPYS INN 48.02N 115.03W
12/07/2012 U3.0 INCH LINCOLN MT DEPT OF HIGHWAY

MDOT REPORTED 3 INCHES ON US-2 FROM HAPPYS
INN TO MARION

&&

$$

IRIS SYSTEM

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KMSO [071557]: Preliminary Local Storm Report

NWUS55 KMSO 071557
LSRMSO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
856 AM MST FRI DEC 7 2012

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

0647 AM SNOW 1 SE YAKT 48.54N 115.96W
12/07/2012 U6.0 INCH LINCOLN MT DEPT OF HIGHWAY

MDOT REPORTED 2 TO 6 INCHES ON US-2 FROM
IDAHO LINE TO 11 MILES EAST OF TROY.

&&

$$

IRIS SYSTEM

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KOKX [071556]: Preliminary Local Storm Report...corrected

NWUS51 KOKX 071556
LSROKX

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE NEW YORK NY
1056 AM EST FRI DEC 07 2012

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

0942 AM FREEZING RAIN 1 ESE DENTON 41.40N 74.39W
12/07/2012 U0.00 INCH ORANGE NY EMERGENCY MNGR

*** 1 FATAL *** ICY ROADWAY CONTRIBUTED TO HEAD ON
COLLISION WITH TRACTOR TRAILER.


&&

CORRECTED EVENT TIME...REMARKS

$$

DH

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KMSO [071554]: Preliminary Local Storm Report

NWUS55 KMSO 071554
LSRMSO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
854 AM MST FRI DEC 7 2012

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

0647 AM SNOW 1 SSE SWAN LAKE 47.92N 113.84W
12/07/2012 U2.0 INCH LAKE MT DEPT OF HIGHWAY

MDOT REPORTED TRACE TO 2 INCHES ON MT-83
FROM CONDON TO MT-35

&&

$$

IRIS SYSTEM

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KMSO [071552]: Preliminary Local Storm Report

NWUS55 KMSO 071552
LSRMSO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
851 AM MST FRI DEC 7 2012

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

0647 AM SNOW 3 ENE SOMERS 48.10N 114.16W
12/07/2012 U2.0 INCH FLATHEAD MT DEPT OF HIGHWAY

MDOT REPORTED TRACE TO 2 INCHES ON MT-82
FROM SOMERS TO MT-35

&&

$$

IRIS SYSTEM

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KMSO [071549]: Preliminary Local Storm Report

NWUS55 KMSO 071549
LSRMSO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
848 AM MST FRI DEC 7 2012

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

0647 AM SNOW 7 SSW KOOTENAI FALLS 48.35N 115.84W
12/07/2012 U6.0 INCH LINCOLN MT DEPT OF HIGHWAY

MDOT REPORTED 6" ON MT-56 FROM BULL LAKE TO
TROY

&&

$$

IRIS SYSTEM

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KMSO [071547]: Preliminary Local Storm Report

NWUS55 KMSO 071547
LSRMSO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
846 AM MST FRI DEC 7 2012

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

0647 AM SNOW 7 NE HERON 48.15N 115.86W
12/07/2012 U4.0 INCH SANDERS MT DEPT OF HIGHWAY

MDOT REPORTED 4" ON MT-56 FROM NOXON TO BULL
LAKE

&&

$$

IRIS SYSTEM

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KMSO [071543]: Preliminary Local Storm Report

NWUS55 KMSO 071543
LSRMSO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
843 AM MST FRI DEC 7 2012

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

0647 AM SNOW 5 SSE WOODS BAY 47.93N 114.03W
12/07/2012 U2.0 INCH LAKE MT DEPT OF HIGHWAY

MDOT REPORTED TRACE TO 2" ON MT-35 FROM
YELLOW BAY TO S-206

&&

$$

IRIS SYSTEM

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KOKX [071539]: Preliminary Local Storm Report...corrected

NWUS51 KOKX 071539
LSROKX

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE NEW YORK NY
1039 AM EST FRI DEC 07 2012

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

1000 AM FREEZING RAIN 1 ESE DENTON 41.40N 74.39W
12/07/2012 U0.00 INCH ORANGE NY EMERGENCY MNGR

*** 1 FATAL *** ICY ROADWAY CONTRIBUTED TO HEAD ON
COLLISION WITH TRACTOR TRAILER. TIME ESTIMATED.


&&

CORRECTED REMARKS

$$

DH

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KMSO [071539]: Preliminary Local Storm Report

NWUS55 KMSO 071539
LSRMSO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
838 AM MST FRI DEC 7 2012

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

0647 AM SNOW 1 NW NOXON 48.01N 115.80W
12/07/2012 U4.0 INCH SANDERS MT DEPT OF HIGHWAY

MDOT REPORTED 4" ON MT-200 FROM IDAHO LINE
TO TROUT CREEK

&&

$$

IRIS SYSTEM

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KOKX [071538]: Preliminary Local Storm Report

NWUS51 KOKX 071538
LSROKX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW YORK NY
1038 AM EST FRI DEC 07 2012

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

1000 AM FREEZING RAIN 1 ESE DENTON 41.40N 74.39W
12/07/2012 U0.00 INCH ORANGE NY EMERGENCY MNGR

*** 1 FATAL *** ICY ROADWAY CONTRIBUTED TO HEAD ON
COLLISION WITH TRACTOR TRAILER.


&&

$$

DH

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KMSO [071535]: Preliminary Local Storm Report

NWUS55 KMSO 071535
LSRMSO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
835 AM MST FRI DEC 7 2012

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

0600 AM SNOW LOST TRAIL PASS 45.69N 113.95W
12/07/2012 U6.0 INCH RAVALLI MT PUBLIC

LOST TRAIL SKI AREA REPORTED 6 INCHES IN THE
LAST 24 HOURS. SNOW DURATION 24 HOURS

&&

$$

IRIS SYSTEM

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KMSO [071533]: Preliminary Local Storm Report

NWUS55 KMSO 071533
LSRMSO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
833 AM MST FRI DEC 7 2012

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

0710 AM SNOW 5 NW EAST PORTAL 47.45N 115.70W
12/07/2012 U10.0 INCH MINERAL MT PUBLIC

LOOKOUT SKI AREA REPORTED 10 INCHES IN THE
LAST 24 HOURS. SNOW DURATION 24 HOURS

&&

$$

IRIS SYSTEM

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KABR [071523]: Preliminary Local Storm Report

NWUS53 KABR 071523
LSRABR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
923 AM CST FRI DEC 07 2012

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

0923 AM SNOW MILLER 44.52N 98.99W
12/07/2012 E3.0 INCH HAND SD PUBLIC


&&

EVENT NUMBER ABR1200491

$$

TMK

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KBGM [071452]: Preliminary Local Storm Report...summary

NWUS51 KBGM 071452
LSRBGM

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE BINGHAMTON NY
952 AM EST FRI DEC 07 2012

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

0809 AM FREEZING RAIN SCRANTON 41.40N 75.67W
12/07/2012 U0.00 INCH LACKAWANNA PA PUBLIC

NUMEROUS ACCIDENTS REPORTED ON THE INTERSTATES IN
NORTHEAST PA.

0919 AM FREEZING RAIN DINGMANS FERRY 41.22N 74.88W
12/07/2012 U0.00 INCH PIKE PA TRAINED SPOTTER

0942 AM FREEZING RAIN HANCOCK 41.95N 75.28W
12/07/2012 U0.00 INCH DELAWARE NY TRAINED SPOTTER

TRACTOR TRAILER ACCIDENT ON RT. 17 WEST OF HANCOCK.
SEVERAL ACCIDENTS ON RT. 97.


&&

$$

EMG

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KCTP [071452]: Preliminary Local Storm Report

NWUS51 KCTP 071452
LSRCTP

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
952 AM EST FRI DEC 07 2012

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

0830 AM FREEZING RAIN 5 SSE ULYSSES 41.84N 77.72W
12/07/2012 E0.02 INCH POTTER PA TRAINED SPOTTER

RAIN FREEZING ON PAVED SURFACE

0847 AM FREEZING RAIN 2 E BOALSBURG 40.77N 77.75W
12/07/2012 E0.02 INCH CENTRE PA NWS EMPLOYEE

GLAZE OF ICE ON TREES


&&

$$

MMD

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KABR [071436]: Preliminary Local Storm Report

NWUS53 KABR 071436
LSRABR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
836 AM CST FRI DEC 07 2012

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

0800 AM SNOW 3 NNE PIERRE 44.41N 100.30W
12/07/2012 M5.0 INCH HUGHES SD TRAINED SPOTTER

COCORAHS REPORTER AS OF 8 AM. STILL SNOWING


&&

EVENT NUMBER ABR1200490

$$

TMK

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KABR [071426]: Preliminary Local Storm Report

NWUS53 KABR 071426
LSRABR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
825 AM CST FRI DEC 07 2012

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

0800 AM SNOW 19 NNW HIGHMORE 44.77N 99.59W
12/07/2012 M2.0 INCH HYDE SD TRAINED SPOTTER

COCORAHS OBSERVER AS OF 8 AM. STILL SNOWING


&&

EVENT NUMBER ABR1200489

$$

TMK

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KBGM [071311]: Preliminary Local Storm Report

NWUS51 KBGM 071311
LSRBGM

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BINGHAMTON NY
811 AM EST FRI DEC 07 2012

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

0809 AM FREEZING RAIN SCRANTON 41.40N 75.67W
12/07/2012 U0.00 INCH LACKAWANNA PA PUBLIC

NUMEROUS ACCIDENTS REPORTED ON THE INTERSTATES IN
NORTHEAST PA.


&&

$$

EMG

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KABR [071259]: Preliminary Local Storm Report

NWUS53 KABR 071259
LSRABR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
658 AM CST FRI DEC 07 2012

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

0657 AM SNOW PIERRE 44.37N 100.32W
12/07/2012 M1.6 INCH HUGHES SD CO-OP OBSERVER

SNOW FALL AS OF 7 AM. SNOW CONTINUES


&&

EVENT NUMBER ABR1200488

$$

TMK

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KMSO [071256]: Preliminary Local Storm Report

NWUS55 KMSO 071256
LSRMSO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
555 AM MST FRI DEC 7 2012

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

0550 AM SNOW 3 E FLORENCE 46.63N 114.01W
12/07/2012 M2.4 INCH RAVALLI MT NWS EMPLOYEE

SNOW DURATION 10 HOURS

&&

$$

IRIS SYSTEM

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 071240
SWODY1
SPC AC 071238

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0638 AM CST FRI DEC 07 2012

VALID 071300Z - 081200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
A BROAD CYCLONIC FLOW REGIME CONTINUES OVER THE CONUS WITH SEVERAL
EMBEDDED SPEED MAXIMA MOVING FROM THE PAC NW TO THE CENTRAL PLAINS
AND GREAT LAKES. OTHERWISE...ONE WEAK MIDLEVEL TROUGH WILL CONTINUE
TO DRIFT EWD OFF THE SE ATLANTIC COAST...AND A POSITIVE TILT TROUGH
WILL MOVE FROM THE SRN ROCKIES/CENTRAL PLAINS TO THE MS AND OH
VALLEYS BY TONIGHT. WEAK CYCLOGENESIS IS EXPECTED FROM SRN MO TO
INDIANA/NW OH IN ADVANCE OF THE EJECTING POSITIVE TILT WAVE...AND A
STRONGER SPEED MAX CROSSING THE CENTRAL PLAINS AND MID MS VALLEY
OVERNIGHT. LOW-LEVEL MOISTURE RETURN FROM E X AND THE LOWER MS
VALLEY NEWD TO THE LOWER OH VALLEY WILL CONTRIBUTE TO WEAK
DESTABILIZATION AND THE POTENTIAL FOR A FEW ELEVATED THUNDERSTORMS
IN A WEAK WAA REGIME...MAINLY FROM 06-12Z.

ELSEWHERE...A COASTAL FRONT COULD BACK SLIGHTLY WWD INTO ERN NC
TODAY. THIS WILL ALLOW SUFFICIENT LOW-LEVEL MOISTENING FOR WEAK
BUOYANCY AND AN ISOLATED THUNDERSTORM RISK INLAND...THOUGH THE
MAJORITY OF THE THUNDERSTORMS SHOULD REMAIN OFFSHORE.

..THOMPSON/ROGERS.. 12/07/2012

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KUNR [071219]: Preliminary Local Storm Report

NWUS53 KUNR 071219
LSRUNR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
519 AM MST FRI DEC 07 2012

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

0500 AM SNOW RAPID CITY AIRPORT 44.05N 103.06W
12/07/2012 M1.1 INCH PENNINGTON SD ASOS

6 HOUR TOTAL


&&

$$

JC

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KUNR [071219]: Preliminary Local Storm Report

NWUS53 KUNR 071219
LSRUNR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
518 AM MST FRI DEC 07 2012

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

0455 AM SNOW 1 E DOWNTOWN RAPID CITY 44.07N 103.21W
12/07/2012 M0.7 INCH PENNINGTON SD NWS OFFICE

6 HOUR TOTAL


&&

$$

JC

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KCYS [071130]: Preliminary Local Storm Report

NWUS55 KCYS 071130
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
429 AM MST FRI DEC 7 2012

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

0255 AM NON-TSTM WND GST ROCK RIVER 41.73N 105.98W
12/07/2012 M53 MPH ALBANY WY MESONET

REPORTED AT MESOWEST STATION UR345

&&

$$

IRIS SYSTEM

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KCYS [071130]: Preliminary Local Storm Report

NWUS55 KCYS 071130
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
429 AM MST FRI DEC 7 2012

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

0210 AM NON-TSTM WND GST 7 ESE ARLINGTON 41.55N 106.09W
12/07/2012 M55 MPH CARBON WY MESONET

REPORTED AT WYDOT STATION WY24

&&

$$

IRIS SYSTEM

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DAY48SVR: Nws Storm Prediction Center Norman Ok

ACUS48 KWNS 071000
SWOD48
SPC AC 071000

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0400 AM CST FRI DEC 07 2012

VALID 101200Z - 151200Z

...DISCUSSION...
PRE-FRONTAL MOISTENING...COUPLED WITH STRENGTHENING DEEP LAYER MEAN
FLOW AND VERTICAL SHEAR...WILL CONTRIBUTE TO SOME INCREASE IN
CONVECTIVE POTENTIAL ACROSS PARTS OF THE EASTERN GULF/SOUTH ATLANTIC
COAST STATES MONDAY INTO EARLY TUESDAY. HOWEVER...MEDIUM RANGE
MODELS GENERALLY INDICATE THAT...AS THE PRIMARY SURFACE CYCLONE
MIGRATES ACROSS EASTERN CANADA...ANY SECONDARY SURFACE CYCLOGENESIS
ACROSS OR TO THE EAST OF THE SOUTHERN APPALACHIANS WILL REMAIN
FAIRLY WEAK. WHILE THE DEVELOPMENT OF SEVERE WEATHER POTENTIAL MAY
NOT BE COMPLETELY OUT OF THE QUESTION...POTENTIAL AT THE MOMENT
APPEARS TOO LOW TO DELINEATE A REGIONAL SEVERE THREAT AREA.

THEREAFTER...GUIDANCE DOES INDICATE THAT INTERACTION BETWEEN A BELT
OF WESTERLIES EMERGING FROM THE NORTHEAST PACIFIC...AND ANOTHER
EMERGING FROM THE SUBTROPICAL EASTERN PACIFIC...WILL LEAD TO A
STRENGTHENING UPPER JET ACROSS MUCH OF THE CENTRAL AND SOUTHERN TIER
OF THE U.S. LATE NEXT WEEK. THIS MAY BE ACCOMPANIED BY INCREASING
POTENTIAL FOR SIGNIFICANT SURFACE CYCLOGENESIS IN CLOSER PROXIMITY
TO THE GULF OF MEXICO...WHICH COULD SUPPORT AN INCREASING RISK FOR
SEVERE THUNDERSTORMS...BUT PROBABLY NOT UNTIL AFTER THIS FORECAST
PERIOD.

..KERR.. 12/07/2012

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MESO: Mesoscale Discussion 2132

ACUS11 KWNS 070844
SWOMCD
SPC MCD 070844
PAZ000-071445-

MESOSCALE DISCUSSION 2132
NWS STORM PREDICTION CENTER NORMAN OK
0244 AM CST FRI DEC 07 2012

AREAS AFFECTED...CNTRL PA

CONCERNING...FREEZING RAIN

VALID 070844Z - 071445Z

SUMMARY...AREAS OF LIGHT FREEZING RAIN ARE EXPECTED EARLY THIS
MORNING...ENDING FROM SW TO NE AS TEMPERATURES WARM...AND CHANGING
TO ALL RAIN AFTER 15Z.

DISCUSSION...A COLD SURFACE RIDGE IS IN PLACE ACROSS THE NERN STATES
WITH TEMPERATURES IN THE 20S F. SWLY FLOW OFF THE SURFACE IS HELPING
TO ENHANCE ISENTROPIC LIFT ALONG A WARM FRONT...WITH WIDESPREAD
SHOWERS ACROSS OH INTO WRN PA. WITH SURFACE WET BULB TEMPERATURES
WELL BELOW 32 F...INITIAL PRECIPITATION SHOULD BE FREEZING RAIN
ACROSS CNTRL AND NRN PA. MODELS INDICATE A FEW HUNDREDTHS PER HOUR
WILL BE POSSIBLE FOR SEVERAL HOURS...BEFORE WARM ADVECTION BRING
TEMPERATURES ABOVE FREEZING. UPSTREAM SURFACE OBSERVATIONS ALSO
INDICATE HOURLY AMOUNTS GENERALLY NEAR 0.05".

..JEWELL.. 12/07/2012

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

ATTN...WFO...BGM...CTP...

LAT...LON 41967685 41767620 41407596 40827604 40427655 40097709
39937749 40347795 40857846 41277862 41727843 41937785
41967685

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DAY3SVR: Nws Storm Prediction Center Norman Ok

ACUS03 KWNS 070831
SWODY3
SPC AC 070830

DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0230 AM CST FRI DEC 07 2012

VALID 091200Z - 101200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
THE SPREAD AMONG THE MODELS AND MODEL ENSEMBLES CONTINUES TO
INCREASE CONCERNING SHORT WAVE DEVELOPMENTS WITHIN LARGER SCALE
TROUGHING ENCOMPASSING MUCH OF THE INTERIOR OF NORTH AMERICA DURING
THIS FORECAST PERIOD. HOWEVER...MOST GUIDANCE DOES INDICATE THAT AT
LEAST SOME PHASING OF EMBEDDED IMPULSES WILL LEAD TO SHARPENING OF
THE UPPER TROUGH ALONG A POSITIVELY TILTED AXIS EXTENDING FROM
NORTHWEST ONTARIO THROUGH THE TEXAS BIG BEND/ADJACENT MEXICAN
PLATEAU REGION BY 12Z MONDAY. THIS IS FORECAST TO COINCIDE WITH THE
SOUTHEASTWARD ADVANCEMENT OF A COLD INTRUSION THROUGH MUCH OF THE
REMAINDER OF THE PLAINS/MISSISSIPPI VALLEY...INTO THE WESTERN GULF
COAST REGION...AND SIGNIFICANT SURFACE CYCLOGENESIS...MAINLY ACROSS
PARTS OF THE GREAT LAKES REGION INTO SOUTHERN ONTARIO LATE IN THE
PERIOD. AIDED BY THE NORTHWARD ADVECTION OF PRECIPITABLE WATER ON
THE ORDER OF 1.0 TO 1.25 INCHES ALONG AND JUST AHEAD OF THE
FRONT...LARGE-SCALE FORCING FOR UPWARD VERTICAL MOTION AND
DESTABILIZATION PROBABLY WILL SUPPORT CONSIDERABLE THUNDERSTORM
ACTIVITY FROM PORTIONS OF THE SOUTHERN PLAINS INTO THE LOWER OHIO
AND TENNESSEE VALLEYS.

...PARTS OF CNTRL/ERN TEXAS INTO LWR MS VALLEY...
SUBSTANTIVE DIFFERENCES EXIST AMONG THE MODELS CONCERNING SURFACE
CYCLOGENESIS...BUT PRIMARY STRENGTHENING OF THE ASSOCIATED 850 MB
JET APPEARS MOST PROBABLE ACROSS THE OHIO VALLEY INTO THE LOWER
GREAT LAKES REGION SUNDAY NIGHT. HOWEVER...DEEPER LAYER FLOW FIELDS
AND SHEAR WILL LIKELY STILL BE STRONG ALONG THE FRONT AS FAR SOUTH
AS THE RIO GRANDE VALLEY. AND SOME STRENGTHENING OF SOUTHWESTERLY
PRE-FRONTAL 850 FLOW /TO AROUND 30-40 KT/ APPEARS POSSIBLE ACROSS
THE SOUTHERN PLAINS THROUGH THE LOWER MISSISSIPPI VALLEY...AS A
SHORT WAVE IMPULSE WITHIN THE BASE OF THE LARGER SCALE TROUGH BEGINS
TO ACCELERATE EAST OF THE SOUTHERN ROCKIES.

VARIABILITY EXISTS AMONG THE MODELS AND MODEL ENSEMBLES WHEN AND HOW
THIS OCCURS...BUT IT DOES NOT APPEAR OUT OF THE QUESTION THAT
STRENGTHENING OF FORCING FOR UPWARD VERTICAL MOTION DOWNSTREAM
COULD CONTRIBUTE TO INITIATION OF STORMS TO THE WARM SIDE OF THE
FRONT BY SUNDAY EVENING. AT THE PRESENT TIME...THIS SEEMS MOST
PROBABLE ACROSS PARTS OF THE ARKLATEX AND SOUTHERN/EASTERN ARKANSAS.
IN THE PRESENCE OF MOIST LOW-LEVELS WITH MODEST MIXED LAYER CAPE OF
500 TO PERHAPS 1000+ J/KG...IT DOES NOT APPEAR OUT OF THE QUESTION
THAT FORCING AND STRONG GENERALLY UNIDIRECTIONAL SHEAR COULD SUPPORT
THE EVOLUTION OF A SOUTHEASTWARD ADVANCING SQUALL LINE OVERNIGHT.
THIS WILL INCLUDE POTENTIAL FOR SEVERE WIND/HAIL...PERHAPS AN
ISOLATED TORNADO OR TWO...BUT LINGERING UNCERTAINTIES REMAIN TOO
LARGE TO INCLUDE AN OUTLOOK OF SLIGHT RISK PROBABILITIES.

..KERR.. 12/07/2012

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KMSO [070647]: Preliminary Local Storm Report

NWUS55 KMSO 070647
LSRMSO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
1146 PM MST THU DEC 6 2012

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

1140 PM SNOW 6 NE HERON 48.12N 115.85W
12/06/2012 M4.7 INCH SANDERS MT TRAINED SPOTTER

0.7 INCHES FELL FROM 7AM TO 4PM AND ANOTHER
4 INCHES FROM 4PM TO 11:40PM. SNOW DURATION
15 HOURS

&&

$$

IRIS SYSTEM

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KUNR [070619]: Preliminary Local Storm Report

NWUS53 KUNR 070619
LSRUNR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
1119 PM MST THU DEC 06 2012

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

1118 PM SNOW 1 NNW PIEDMONT 44.24N 103.40W
12/06/2012 M1.2 INCH MEADE SD NWS EMPLOYEE

SNOW STARTED AROUND 9 PM MST...0.09 WATER EQUIVALENT


&&

$$

JC

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 070608
SWODY2
SPC AC 070607

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1207 AM CST FRI DEC 07 2012

VALID 081200Z - 091200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
VARIABILITY AMONG THE MODELS AND SPREAD AMONG THE MODEL ENSEMBLES
BEGINS TO INCREASE DURING THIS FORECAST PERIOD...CONCERNING SHORT
WAVE DEVELOPMENTS WITHIN THE EVOLVING UPPER FLOW REGIME. BUT...
GUIDANCE CONTINUES TO INDICATE SIGNIFICANT AMPLIFICATION WITHIN THE
LARGE-SCALE PATTERN ACROSS THE EASTERN PACIFIC...WHERE A LARGE UPPER
RIDGE AND EMBEDDED HIGH CENTER ARE FORECAST TO BUILD. AS THIS
OCCURS...AND COINCIDING WITH A SIGNIFICANT LOW-LEVEL COLD INTRUSION
TO THE LEE OF THE NORTHERN AND CENTRAL ROCKIES...A VIGOROUS
DOWNSTREAM SHORT WAVE IMPULSE APPEARS LIKELY TO DIG ACROSS PARTS OF
THE EASTERN GREAT BASIN. THIS IS EXPECTED TO OCCUR IN THE WAKE OF
ANOTHER SHORT WAVE IMPULSE...THE TRACK OF WHICH REMAINS MORE UNCLEAR
EAST OF THE ROCKIES...ACROSS PARTS OF THE NORTHERN AND CENTRAL
PLAINS. FARTHER SOUTH AND EAST...WEAK MID-LEVEL HEIGHT RISES APPEAR
POSSIBLE ACROSS PARTS OF THE GULF AND SOUTH ATLANTIC COAST REGION.
HOWEVER...MID/UPPER FLOW IS EXPECTED TO REMAIN BROADLY CYCLONIC
ACROSS MUCH OF THE REMAINDER OF THE CENTRAL AND EASTERN
STATES...WITH MORE SUBTLE EMBEDDED SHORT WAVE IMPULSES.

THESE SMALLER SCALE FEATURES MAY CONTRIBUTE TO SCATTERED
THUNDERSTORM ACTIVITY SATURDAY/SATURDAY NIGHT...FROM PARTS OF THE
SOUTHERN PLAINS EAST NORTHEASTWARD INTO PARTS OF THE LOWER OHIO AND
TENNESSEE VALLEYS. THIS IS WHERE A MOISTENING CONFLUENT
SOUTHWESTERLY LOW-LEVEL FLOW REGIME MAY CONTRIBUTE TO WEAK TO MODEST
DESTABILIZATION.

...ARKLATEX THROUGH SRN AR/NW LA/NW MS AND WRN TN...
GUIDANCE...INCLUDING NAM FORECAST SOUNDINGS...INDICATES THE
DEVELOPMENT OF MIXED LAYER CAPE AT LEAST ON THE ORDER OF 500 J/KG OR
SO ACROSS THE REGION BY SATURDAY AFTERNOON. UNCERTAINTY EXISTS
CONCERNING FORCING FOR UPWARD VERTICAL MOTION...BUT LOWER/MID
TROPOSPHERIC CAPPING IS NOT EXPECTED TO BE SUBSTANTIALLY INHIBITIVE
TO STORM DEVELOPMENT DURING THE LATE AFTERNOON AND EVENING HOURS.
AND...VERTICAL SHEAR BENEATH 40-50 KT WESTERLY 500 MB FLOW MAY
CONTRIBUTE TO AN ENVIRONMENT MARGINALLY CONDUCIVE TO SEVERE
STORMS...INCLUDING AN ISOLATED SUPERCELL OR TWO...GIVEN STORM
INITIATION.

..KERR.. 12/07/2012

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KMSO [070606]: Preliminary Local Storm Report

NWUS55 KMSO 070606
LSRMSO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
1106 PM MST THU DEC 6 2012

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

0600 PM SNOW 2 NW HERON 48.08N 115.99W
12/06/2012 M2.8 INCH SANDERS MT COOP OBSERVER

24 HR OBSERVATION BUT SNOW DID NOT BEGIN
UNTIL AROUND 8AM. SNOW DURATION 12 HOURS

&&

$$

IRIS SYSTEM

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 070543
SWODY1
SPC AC 070541

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1141 PM CST THU DEC 06 2012

VALID 071200Z - 081200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...

A BROAD CYCLONIC FLOW REGIME WILL CHARACTERIZE THE SYNOPTIC PATTERN
FRIDAY. SEVERAL EMBEDDED LOW-AMPLITUDE PERTURBATIONS WILL ADVANCE
THROUGH THIS REGIME INCLUDING A POSITIVE TILT SHORTWAVE TROUGH
LOCATED OVER SRN CA AND NRN BAJA AREA. THIS FEATURE WILL CONTINUE
EWD...REACHING THE SRN PLAINS AND LOWER MS VALLEY FRIDAY NIGHT. NRN
PORTIONS OF A COLD FRONT THAT STRETCHES FROM THE UPPER MS VALLEY
SWWD INTO THE SRN PLAINS WILL CONTINUE THROUGH THE GREAT LAKES IN
ASSOCIATION WITH A PROGRESSIVE NRN STREAM TROUGH. TRAILING PORTIONS
OF THIS BOUNDARY WILL LIKELY STALL OVER THE SRN PLAINS.

...NERN TX THROUGH LOWER MS...TN AND OH VALLEYS...

MODIFIED CP AIR WILL ADVECT NEWD THROUGH PRE-FRONTAL WARM SECTOR
ALONG A 20-30 KT SWLY LLJ WITH DEWPOINTS RANGING FROM THE MID 60S
OVER SERN TX TO LOW 50S OVER SRN PORTIONS OF THE TN AND OH VALLEY
FRIDAY EVENING. PLUME OF STEEPER LAPSE RATES WILL ADVECT EWD ABOVE
THE MODEST MOIST AXIS CONTRIBUTING TO MARGINAL INSTABILITY. MUCAPE
WILL LIKELY RANGE FROM BELOW 500 J/KG OVER TN AND KY TO 500-1000
J/KG FARTHER SW ACROSS ERN TX...WHERE RICHER MOISTURE WILL RESIDE
BUT WHERE ATMOSPHERE WILL LIKELY BE MORE CAPPED. SHORTWAVE TROUGH
OVER THE SWRN U.S. IS EXPECTED TO SHEAR EWD AND WEAKEN AS IT MOVES
INTO THE SRN PLAINS AND LOWER MS VALLEY FRIDAY NIGHT. HOWEVER...AT
LEAST MODEST FORCING FOR ASCENT WILL EXIST IN CONVEYOR BELT
DOWNSTREAM FROM THIS FEATURE AND CONTRIBUTE TO POTENTIAL FOR A FEW
ELEVATED SHOWERS AND THUNDERSTORMS...ESPECIALLY FROM PARTS OF THE
LOWER MS VALLEY INTO WRN PARTS OF THE TN VALLEY WHERE THE CAP SHOULD
BE WEAKER.

..DIAL.. 12/07/2012

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KMSO [070530]: Preliminary Local Storm Report

NWUS55 KMSO 070530
LSRMSO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
1029 PM MST THU DEC 6 2012

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

1016 PM SNOW 4 NW NOXON 48.04N 115.84W
12/06/2012 M5.6 INCH SANDERS MT TRAINED SPOTTER

STARTED SNOWING AT 8AM, SNOW BEGAN TO
ACCUMULATE DURING THE AFTERNOON WITH 4
INCHES BETWEEN 6PM AND 10PM

&&

$$

IRIS SYSTEM

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