KDVN [011342]: Preliminary Local Storm Report

NWUS53 KDVN 011342
LSRDVN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
741 AM CST SAT DEC 01 2007

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

0741 AM FREEZING RAIN KEOKUK 40.41N 91.40W
12/01/2007 U0.00 INCH LEE IA TRAINED SPOTTER

FREEZING RAIN BEGAN AT 630 AM. STREETS ARE COATED AND
VEHICLES ARE SLIDING.

&&

$$

MIKEZ

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KDMX [011341]: Preliminary Local Storm Report

NWUS53 KDMX 011341
LSRDMX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
741 AM CST SAT DEC 01 2007

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

0740 AM FREEZING RAIN CRESTON 41.06N 94.36W
12/01/2007 E0.16 INCH UNION IA LAW ENFORCEMENT

&&

$$

FILLBACH

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KOAX [011331]: Preliminary Local Storm Report

NWUS53 KOAX 011331
LSROAX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
731 AM CST SAT DEC 01 2007

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

0730 AM ICE STORM 3 E FRIEND 40.65N 97.23W
12/01/2007 SALINE NE CO-OP OBSERVER

ONE QUARTER INCH ICE ACCUMULATION.

&&

$$

DEWALD

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KGID [011328]: Preliminary Local Storm Report

NWUS53 KGID 011328
LSRGID

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
728 AM CST SAT DEC 01 2007

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

0710 AM FREEZING RAIN HASTINGS 40.59N 98.39W
12/01/2007 M0.20 INCH ADAMS NE NWS EMPLOYEE

0.20 INCH OF ICE REPORTED ON THE NORTHWEST SIDE OF
HASTINGS.

&&

$$

NWS

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KTOP [011325]: Preliminary Local Storm Report

NWUS53 KTOP 011325
LSRTOP

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
725 AM CST SAT DEC 01 2007

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

0722 AM ICE STORM 1 NE WHEATON 39.51N 96.31W
12/01/2007 POTTAWATOMIE KS TRAINED SPOTTER

1/4 INCH OF ICE

&&

$$

BYRNE

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KCYS [011323]: Preliminary Local Storm Report...summary

NWUS55 KCYS 011323
LSRCYS

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE CHEYENNE WY
623 AM MST SAT DEC 01 2007

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

0400 AM HEAVY SNOW 1 SE RED MOUNTAIN 41.00N 105.92W
12/01/2007 M8.7 INCH LARIMER CO MESONET

WHISKEY PARK SNOTEL-WPKW4-ELEV. 8950 FEET.

0400 AM HEAVY SNOW 9 SW BATTLE LAKE 41.06N 107.13W
12/01/2007 M11.5 INCH CARBON WY MESONET

SANDSTONE RS SNOTEL-SRSW4-ELEV. 8150

0400 AM HEAVY SNOW 13 NW BATTLE LAKE 41.29N 107.18W
12/01/2007 M6.8 INCH CARBON WY MESONET

DIVIDE PEAK-DVDW4-ELEV. 8880 FEET.

0400 AM SNOW WINDY PEAK 42.30N 105.57W
12/01/2007 M1.9 INCH CONVERSE WY MESONET

WINDY PEAK SNOTEL-WNDW4-ELEV. 7900 FEET.

0400 AM HEAVY SNOW BROOKLYN LAKE 41.37N 106.25W
12/01/2007 M7.0 INCH ALBANY WY MESONET

BROOKLYN LAKE SNOTEL-BKLW4-ELEV. 10240 FEET.

0400 AM HEAVY SNOW 7 SW ENCAMPMENT 41.14N 106.89W
12/01/2007 M11.8 INCH CARBON WY MESONET

WEBBER SPRINGS SNOTEL-WBSW4-ELEV. 9250 FEET.

0400 AM HEAVY SNOW 22 WSW SARATOGA 41.33N 107.20W
12/01/2007 M6.8 INCH CARBON WY MESONET

SAGE CREEK SNOTEL-SGBW4-ELEV. 7850 FEET.

0400 AM HEAVY SNOW 2 ESE BATTLE LAKE 41.14N 106.97W
12/01/2007 M11.5 INCH CARBON WY MESONET

OLD BATTLE SNOTEL-OLDW4-ELEV. 10000 FEET.

0400 AM HEAVY SNOW 9 SW ARLINGTON 41.50N 106.33W
12/01/2007 M7.3 INCH CARBON WY MESONET

SAND LAKE SNOTEL-SNLW4-ELEV. 10050 FEET.

0400 AM HEAVY SNOW 1 NE RYAN PARK 41.33N 106.49W
12/01/2007 M8.1 INCH CARBON WY MESONET

SOUTH BRUSH CREEK SNOTEL-SBCW4-ELEV. 8440 FEET.

0400 AM HEAVY SNOW 7 E RYAN PARK 41.32N 106.37W
12/01/2007 M9.3 INCH CARBON WY MESONET

NORTH FRENCH CREEK SNOTEL-NFCW4-ELEV. 10130 FEET.

0400 AM HEAVY SNOW BATTLE MOUNTAIN 42.11N 106.22W
12/01/2007 M8.0 INCH CARBON WY MESONET

BATTLE MOUNTAIN SNOTEL-BTLW4-ELEV. 7440 FEET.

0520 AM FREEZING RAIN PINE BLUFFS 41.18N 104.07W
12/01/2007 E0.00 INCH LARAMIE WY LAW ENFORCEMENT

WYOMING HIGHWAY PATROL CALLED TO REPORT FREEZING RAIN
OCCURRING FROM THE NEBRASKA STATE LINE TO JUST WEST OF
PINE BLUFFS.

0615 AM FREEZING RAIN 1 W SCOTTSBLUFF 41.87N 103.68W
12/01/2007 E0.00 INCH SCOTTS BLUFF NE PUBLIC

REPORT OF A TRACE OF ICE ON OBJECTS FROM FREEZING RAIN
OVERNIGHT.

0620 AM FREEZING RAIN CHEYENNE 41.15N 104.79W
12/01/2007 E0.00 INCH LARAMIE WY NWS EMPLOYEE

FREEZING RAIN OCCURRING AT NWS OFFICE IN CHEYENNE WITH A
TRACE OF ICE ACCUMULATING ON OBJECTS.

&&

$$

SJC

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KEAX [011322]: Preliminary Local Storm Report

NWUS53 KEAX 011322
LSREAX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
722 AM CST SAT DEC 01 2007

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

0600 AM ICE STORM ROCKPORT 40.42N 95.52W
12/01/2007 ATCHISON MO LAW ENFORCEMENT

1/4 INCH ICE

&&

$$

MJ

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KCYS [011322]: Preliminary Local Storm Report

NWUS55 KCYS 011322
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
622 AM MST SAT DEC 01 2007

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

0620 AM FREEZING RAIN CHEYENNE 41.15N 104.79W
12/01/2007 E0.00 INCH LARAMIE WY NWS EMPLOYEE

FREEZING RAIN OCCURRING AT NWS OFFICE IN CHEYENNE WITH A
TRACE OF ICE ACCUMULATING ON OBJECTS.

&&

$$

SJC

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KCYS [011319]: Preliminary Local Storm Report

NWUS55 KCYS 011319
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
619 AM MST SAT DEC 01 2007

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

0520 AM FREEZING RAIN PINE BLUFFS 41.18N 104.07W
12/01/2007 E0.00 INCH LARAMIE WY LAW ENFORCEMENT

WYOMING HIGHWAY PATROL CALLED TO REPORT FREEZING RAIN
OCCURRING FROM THE NEBRASKA STATE LINE TO JUST WEST OF
PINE BLUFFS.

&&

$$

SJC

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KTOP [011317]: Preliminary Local Storm Report

NWUS53 KTOP 011317
LSRTOP

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
717 AM CST SAT DEC 01 2007

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

0713 AM ICE STORM 2 N RANDOLPH 39.46N 96.76W
12/01/2007 RILEY KS TRAINED SPOTTER

1/4 INCH OF ICE

&&

$$

BYRNE

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KCYS [011317]: Preliminary Local Storm Report

NWUS55 KCYS 011317
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
617 AM MST SAT DEC 01 2007

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

0615 AM FREEZING RAIN 1 W SCOTTSBLUFF 41.87N 103.68W
12/01/2007 E0.00 INCH SCOTTS BLUFF NE PUBLIC

REPORT OF A TRACE OF ICE ON OBJECTS FROM FREEZING RAIN
OVERNIGHT.

&&

$$

SJC

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KPUB [011313]: Preliminary Local Storm Report

NWUS55 KPUB 011313
LSRPUB

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PUEBLO CO
612 AM MST SAT DEC 01 2007

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

0600 AM SNOW CLIMAX 39.37N 106.18W
12/01/2007 M10.0 INCH LAKE CO CO-OP OBSERVER

5 INCHES NEW SNOW...SNOWING HARD

&&

$$

JKH

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KCYS [011313]: Preliminary Local Storm Report

NWUS55 KCYS 011313
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
613 AM MST SAT DEC 01 2007

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

0400 AM HEAVY SNOW 1 SE RED MOUNTAIN 41.00N 105.92W
12/01/2007 M8.7 INCH LARIMER CO MESONET

WHISKEY PARK SNOTEL-WPKW4-ELEV. 8950 FEET.

0400 AM HEAVY SNOW 9 SW BATTLE LAKE 41.06N 107.13W
12/01/2007 M11.5 INCH CARBON WY MESONET

SANDSTONE RS SNOTEL-SRSW4-ELEV. 8150

0400 AM HEAVY SNOW 13 NW BATTLE LAKE 41.29N 107.18W
12/01/2007 M6.8 INCH CARBON WY MESONET

DIVIDE PEAK-DVDW4-ELEV. 8880 FEET.

0400 AM SNOW WINDY PEAK 42.30N 105.57W
12/01/2007 M1.9 INCH CONVERSE WY MESONET

WINDY PEAK SNOTEL-WNDW4-ELEV. 7900 FEET.

0400 AM HEAVY SNOW BROOKLYN LAKE 41.37N 106.25W
12/01/2007 M7.0 INCH ALBANY WY MESONET

BROOKLYN LAKE SNOTEL-BKLW4-ELEV. 10240 FEET.

0400 AM HEAVY SNOW 7 SW ENCAMPMENT 41.14N 106.89W
12/01/2007 M11.8 INCH CARBON WY MESONET

WEBBER SPRINGS SNOTEL-WBSW4-ELEV. 9250 FEET.

0400 AM HEAVY SNOW 22 WSW SARATOGA 41.33N 107.20W
12/01/2007 M6.8 INCH CARBON WY MESONET

SAGE CREEK SNOTEL-SGBW4-ELEV. 7850 FEET.

0400 AM HEAVY SNOW 2 ESE BATTLE LAKE 41.14N 106.97W
12/01/2007 M11.5 INCH CARBON WY MESONET

OLD BATTLE SNOTEL-OLDW4-ELEV. 10000 FEET.

0400 AM HEAVY SNOW 9 SW ARLINGTON 41.50N 106.33W
12/01/2007 M7.3 INCH CARBON WY MESONET

SAND LAKE SNOTEL-SNLW4-ELEV. 10050 FEET.

0400 AM HEAVY SNOW 1 NE RYAN PARK 41.33N 106.49W
12/01/2007 M8.1 INCH CARBON WY MESONET

SOUTH BRUSH CREEK SNOTEL-SBCW4-ELEV. 8440 FEET.

0400 AM HEAVY SNOW 7 E RYAN PARK 41.32N 106.37W
12/01/2007 M9.3 INCH CARBON WY MESONET

NORTH FRENCH CREEK SNOTEL-NFCW4-ELEV. 10130 FEET.

0400 AM HEAVY SNOW BATTLE MOUNTAIN 42.11N 106.22W
12/01/2007 M8.0 INCH CARBON WY MESONET

BATTLE MOUNTAIN SNOTEL-BTLW4-ELEV. 7440 FEET.

&&

$$

SJC

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KDVN [011304]: Preliminary Local Storm Report

NWUS53 KDVN 011304
LSRDVN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
704 AM CST SAT DEC 01 2007

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

0655 AM FREEZING RAIN 1 ENE FORT MADISON 40.63N 91.33W
12/01/2007 E0.00 INCH LEE IA TRAINED SPOTTER

FREEZING RAIN AND SLEET JUST STARTED.

&&

$$

MIKEZ

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KDVN [011304]: Preliminary Local Storm Report

NWUS53 KDVN 011304
LSRDVN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
704 AM CST SAT DEC 01 2007

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

0655 AM SLEET GOOD HOPE 40.56N 90.67W
12/01/2007 E0.00 INCH MCDONOUGH IL CO-OP OBSERVER

JUST STARTED.

&&

$$

MIKEZ

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MESO: Mesoscale Discussion 2173

ACUS11 KWNS 011304
SWOMCD
SPC MCD 011304
ILZ000-WIZ000-IAZ000-MNZ000-SDZ000-011700-

MESOSCALE DISCUSSION 2173
NWS STORM PREDICTION CENTER NORMAN OK
0704 AM CST SAT DEC 01 2007

AREAS AFFECTED...ERN SD...SRN MN...NRN/ERN IA...NWRN IL

CONCERNING...WINTER MIXED PRECIPITATION

VALID 011304Z - 011700Z

A MIX OF SNOW/SLEET/FREEZING RAIN WILL EXPAND N/EWD THIS MORNING
FROM THE LOWER MO RIVER VALLEY INTO THE UPPER MIDWEST. AREAS OF
MODERATE TO LOCALLY HEAVY SNOW WITH RATES APPROACHING 1 IN/HR WILL
SHIFT NWD ACROSS ERN SD/SRN MN...FOLLOWED BY A TRANSITION TO MIXED
SNOW/SLEET. ACROSS NRN/ERN IA AND NWRN IL...PREDOMINANT PTYPE OF
SLEET WILL TRANSITION TO FREEZING RAIN FROM SW TO NE THROUGH 18Z.
SIGNIFICANT ICE ACCUMULATIONS WILL BECOME LIKELY /REF MCD 2172 FOR
ADDITIONAL INFORMATION PERTAINING TO THIS THREAT ACROSS SRN/WRN IA
AND ERN NEB/.

A SWATH OF WINTERY PRECIPITATION HAS BLOSSOMED ACROSS THE LOWER MO
RIVER VALLEY OVER THE PAST FEW HOURS WHERE A GENERAL N TO S
TRANSITION FROM SNOW TO SLEET TO FREEZING RAIN TO RAIN HAS OCCURRED.
INTENSE WARM/MOIST ADVECTION DRIVEN BY A POTENT LLJ /STRENGTHENING
TO 60 TO 80 KTS AT 850 MB BY 18Z/ WILL FOCUS AMPLE FRONTOGENETICAL
FORCING DOWNSTREAM OF LEAD SHORT WAVE TROUGH ACROSS THE CNTRL/SRN
ROCKIES. THUS...EXPANSION/INTENSIFICATION OF PRECIPITATION
AREA/RATES IS EXPECTED TO CONTINUE. LATEST MODEL GUIDANCE FORECASTS
INDICATE THIS TREND AS WELL...ALTHOUGH THEY MAY BE A BIT TOO BULLISH
WITH QPF ON THE NRN/ERN FRINGE OF THE MD AREA GIVEN AMBIENT DRY
LOW-LEVELS PER 12Z MPX AND DVN RAOBS. NEVERTHELESS...AREAS OF
MODERATE SNOW CENTERED FROM ABR TO FSD SHOULD EXPAND ACROSS MUCH OF
SRN MN...LIKELY REACHING THE I-94 CORRIDOR FROM AXN TO THE TWIN
CITIES METRO TOWARDS 18Z. ACROSS NRN/ERN IA INTO NWRN IL...INITIAL
SNOW SHOULD TRANSITION TO LIGHT/MODERATE SLEET AND EVENTUALLY
FREEZING RAIN AS AN INFLUX OF SATURATED AND WARM LOW-LEVEL
TEMPERATURES /REF 9C TD AT 850 MB IN 12Z TOP RAOB/...CONTINUE TO
ADVECT NEWD ABOVE THE SURFACE-BASED COLD DOME.

.GRAMS.. 12/01/2007

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

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

ATTN...WFO...ILX...MKX...DVN...ARX...MPX...DMX...FGF...FSD...ABR...

44209904 45079816 45729669 45839499 45589367 44419197
43109079 42218987 41098949 40408972 41189126 41569258
42319423 42999604 43009782 43079884 43559910

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 011303
SWODY1
SPC AC 011301

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0701 AM CST SAT DEC 01 2007

VALID 011300Z - 021200Z

..NO SVR TSTM AREAS FORECAST...

BROAD UPPER TROUGH OVER THE WESTERN UNITED STATES WILL BE THE
PRIMARY WEATHER-MAKER THIS FORECAST PERIOD...WITH WIDESPREAD
PRECIPITATION AFFECTING AREAS FROM THE GREAT BASIN INTO THE GREAT
LAKES REGION. TWO AREAS WILL HAVE SOME THREAT OF THUNDERSTORM
ACTIVITY TODAY AND TONIGHT ASSOCIATED WITH PRIMARY TROUGH...WHILE
ANOTHER SYSTEM APPROACHES THE PACIFIC NORTHWEST RESULTING IN A
SEPARATE SMALL THUNDERSTORM THREAT AREA.

..FOUR CORNERS AREA TODAY...
WATER VAPOR IMAGERY SHOWS MAIN TROUGH AXIS NOW OVER WESTERN AZ.
THIS FEATURE WILL MOVE EASTWARD TODAY PROVIDING STRONG LARGE SCALE
UPWARD FORCING ACROSS PARTS OF AZ/UT/CO/NM. MORNING LIGHTNING DATA
SUGGESTS SCATTERED THUNDERSTORMS ARE ONGOING ACROSS CENTRAL NM.
THESE STORMS MAY EXPAND IN AREAL COVERAGE THROUGH THE MORNING AND
SPREAD NORTHEASTWARD ACROSS THE MTNS OF NORTHERN NM/SOUTHERN CO.
OTHER MORE ISOLATED STORMS WILL BE POSSIBLE FARTHER NORTHWEST AS
MAIN TROUGH AXIS APPROACHES THIS AFTERNOON.

..CENTRAL/SOUTHERN PLAINS...
WIDESPREAD STRATIFORM PRECIPITATION IS AFFECTING MUCH OF THE CENTRAL
PLAINS THIS MORNING IN REGION OF STRONG LOW LEVEL WARM ADVECTION AND
LIFT. PRECIPITATION IS EXPECTED TO DIMINISH THIS AFTERNOON ACROSS
THESE AREAS AS LOW LEVEL JET SHIFTS EASTWARD. HOWEVER...PLUME OF
STEEPER MID LEVEL LAPSE RATES AND SLOWLY INCREASING LOW LEVEL
MOISTURE WILL RESULT IN THE THREAT OF ISOLATED THUNDERSTORMS OVER
PARTS OF TX/OK/KS BY EARLY EVENING. HIGHEST POTENTIAL WILL LIKELY
EXIST FROM SOUTHWEST INTO CENTRAL TX WHERE GREATEST INSTABILITY WILL
BE PRESENT. OTHERWISE...STRONG DYNAMIC LIFT LATER TONIGHT MAY HELP
INITIATE A FEW THUNDERSTORMS FROM NORTH TX INTO EASTERN KS. THREAT
WILL EXTEND AS FAR EAST AS WESTERN IL/EASTERN IA BY 02/12Z.

..PACIFIC NORTHWEST...
NEXT IN A SERIES OF STRONG UPPER TROUGHS IS SHOWN ON WATER VAPOR
IMAGERY OFF THE COAST OF WA/ORE. THIS FEATURE IS EXPECTED TO
APPROACH THE COAST AFTER DARK TONIGHT...WITH VERY COLD MID LEVEL
TEMPERATURES AND STEEP LAPSE RATES OVERSPREADING COASTAL AREAS.
ONSHORE LOW LEVEL FLOW WILL AID THREAT OF ISOLATED THUNDERSTORMS.

.HART.. 12/01/2007

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KDVN [011303]: Preliminary Local Storm Report

NWUS53 KDVN 011303
LSRDVN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
703 AM CST SAT DEC 01 2007

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

0655 AM SLEET KEOSAUQUA 40.73N 91.96W
12/01/2007 E0.00 INCH VAN BUREN IA CO-OP OBSERVER

SLEET JUST STARTED.

&&

$$

MIKEZ

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KTOP [011303]: Preliminary Local Storm Report

NWUS53 KTOP 011303
LSRTOP

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
703 AM CST SAT DEC 01 2007

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

0655 AM ICE STORM 5 NNE HIAWATHA 39.92N 95.50W
12/01/2007 BROWN KS TRAINED SPOTTER

1/4 INCH OF ICE

&&

$$

BYRNE

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KDVN [011302]: Preliminary Local Storm Report

NWUS53 KDVN 011302
LSRDVN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
702 AM CST SAT DEC 01 2007

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

0650 AM FREEZING RAIN BURLINGTON 40.81N 91.12W
12/01/2007 E0.00 INCH DES MOINES IA CO-OP OBSERVER

FREEZING RAIN STARTED.

&&

$$

MIKEZ

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KDVN [011302]: Preliminary Local Storm Report

NWUS53 KDVN 011302
LSRDVN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
702 AM CST SAT DEC 01 2007

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

0645 AM FREEZING RAIN N AUGUSTA 40.24N 90.95W
12/01/2007 E0.00 INCH HANCOCK IL TRAINED SPOTTER

FREEZING RAIN JUST STARTED.

&&

$$

MIKEZ

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KTOP [011254]: Preliminary Local Storm Report

NWUS53 KTOP 011254
LSRTOP

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
654 AM CST SAT DEC 01 2007

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

0653 AM FREEZING RAIN 6 SSW SABETHA 39.82N 95.84W
12/01/2007 E0.25 INCH NEMAHA KS TRAINED SPOTTER

&&

$$

CAVANAUGH

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MESO: Mesoscale Discussion 2172

ACUS11 KWNS 011249
SWOMCD
SPC MCD 011248
ILZ000-IAZ000-MOZ000-KSZ000-NEZ000-SDZ000-011545-

MESOSCALE DISCUSSION 2172
NWS STORM PREDICTION CENTER NORMAN OK
0648 AM CST SAT DEC 01 2007

AREAS AFFECTED...FAR NORTH CENTRAL/NERN KS...ERN NEB...WRN/SRN
IA...FAR NRN MO AND WEST CENTRAL IL

CONCERNING...FREEZING RAIN

VALID 011248Z - 011545Z

GREATEST FREEZING RAINFALL RATES THROUGH 18Z ARE EXPECTED ACROSS
MUCH OF ERN NEB INTO WEST CENTRAL THROUGH SRN IA AND INTO FAR NORTH
CENTRAL-NERN MO WITH RATES RANGING FROM 0.1 TO 0.2 INCH PER HOUR.
AREAS SWD ACROSS SOUTH CENTRAL-FAR SERN NEB...ALL OF NRN/NERN KS AND
INTO NWRN MO WILL CONTINUE TO TRANSITION FROM FREEZING RAIN TO RAIN
AS SURFACE TEMPERATURES RISE ABOVE 32 F.

REGIONAL RADARS INDICATED PRECIPITATION EXPANDING AND INCREASING IN
RATES ENEWD ACROSS THE CENTRAL PLAINS INTO MO/IA...WITH THIS TREND
EXPECTED TO CONTINUE AS LARGE SCALE ASCENT STRENGTHENS WITHIN
COUPLED UPPER JET STRUCTURE AND INCREASING LOW LEVEL WAA. SSWLY LLJ
EXTENDING INTO ERN NEB/WRN IA FROM THE SRN PLAINS WILL INCREASE TO
70 KT BY 18Z. THIS WILL SUPPORT A BROAD ZONE OF WAA RESULTING IN
CHANGING PTYPES FROM SOUTH TO NORTH THIS MORNING. LOCATIONS IN NW
THROUGH CENTRAL IA INCLUDING DSM TO SRN IA/NERN MO AND ADJACENT
PARTS OF W CENTRAL IL THAT INITIALLY BEGIN WITH SNOW OR SLEET ARE
EXPECTED TO TRANSITION TO FREEZING RAIN/SLEET MIXTURE AS LOW LEVEL
WAA INCREASES. A CONTINUATION OF WAA WILL SUPPORT A SECOND
TRANSITION TO MAINLY FREEZING RAIN WITH HIGH RATES AS MOISTURE IS
DRAWN NWD ALONG STRONG LLJ.

.PETERS.. 12/01/2007

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

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

ATTN...WFO...ILX...LSX...DVN...DMX...EAX...FSD...OAX...TOP...GID...LBF...

39599506 39639784 40139925 41459944 42399884 42849777
42919600 42009352 41249170 40488998 39688989 39639295

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KDMX [011247]: Preliminary Local Storm Report

NWUS53 KDMX 011247
LSRDMX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
646 AM CST SAT DEC 01 2007

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

0641 AM FREEZING RAIN N SHARPSBURG 40.80N 94.64W
12/01/2007 E0.16 INCH TAYLOR IA TRAINED SPOTTER

&&

$$

FILLBACH

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KPUB [011238]: Preliminary Local Storm Report

NWUS55 KPUB 011238
LSRPUB

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PUEBLO CO
538 AM MST SAT DEC 01 2007

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

0537 AM SNOW 8 SW SOUTH FORK 37.60N 106.73W
12/01/2007 E13.0 INCH MINERAL CO TRAINED SPOTTER

STILL SNOWING

&&

$$

JKH

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KPUB [011232]: Preliminary Local Storm Report

NWUS55 KPUB 011232
LSRPUB

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PUEBLO CO
532 AM MST SAT DEC 01 2007

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

0531 AM SNOW LEADVILLE 39.25N 106.29W
12/01/2007 M8.0 INCH LAKE CO PUBLIC

LIGHT SNOW

&&

$$

JKH

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KDVN [011231]: Preliminary Local Storm Report

NWUS53 KDVN 011231
LSRDVN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
631 AM CST SAT DEC 01 2007

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

0620 AM FREEZING RAIN MEMPHIS 40.46N 92.17W
12/01/2007 E0.00 INCH SCOTLAND MO CO-OP OBSERVER

COOP OBSERVER REPORTS THAT FREEZING RAIN HAS STARTED.

&&

$$

MIKEZ

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KGJT [011231]: Preliminary Local Storm Report

NWUS55 KGJT 011231
LSRGJT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
530 AM MST SAT DEC 01 2007

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

0529 AM HEAVY SNOW 23 N STEAMBOAT SPRINGS 40.81N 106.82W
12/01/2007 M12.0 INCH ROUTT CO PUBLIC

24 HR SNOWFALL...DID NOT MEASURE TO AS MUCH AS WAS FIRST
ESTIMATED

&&

$$

DLC

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KSLC [011225]: Preliminary Local Storm Report

NWUS55 KSLC 011225
LSRSLC

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
525 AM MST SAT DEC 01 2007

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

0521 AM FLOOD 2 E ST. GEORGE 37.08N 113.54W
12/01/2007 WASHINGTON UT LAW ENFORCEMENT

STREET FLOODING WITH ROAD DAMAGE FROM FLOWING WATER

&&

$$

BMCINERN

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KOAX [011225]: Preliminary Local Storm Report

NWUS53 KOAX 011225
LSROAX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
625 AM CST SAT DEC 01 2007

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

0550 AM ICE STORM HUMPHREY 41.69N 97.49W
12/01/2007 PLATTE NE FIRE DEPT/RESCUE

AN EIGTH OF AN INCH ICE ACCUMULATION IN HUMPHREY.

&&

$$

DEE

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KGJT [011220]: Preliminary Local Storm Report

NWUS55 KGJT 011220
LSRGJT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
520 AM MST SAT DEC 01 2007

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

0515 AM HEAVY SNOW 23 N STEAMBOAT SPRINGS 40.81N 106.82W
12/01/2007 E18.0 INCH ROUTT CO PUBLIC

24 HR SNOWFALL

&&

$$

DLC

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KTOP [011212]: Preliminary Local Storm Report

NWUS53 KTOP 011212
LSRTOP

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
612 AM CST SAT DEC 01 2007

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

0611 AM FREEZING RAIN BLUE RAPIDS 39.68N 96.66W
12/01/2007 E0.20 INCH MARSHALL KS LAW ENFORCEMENT

COUNTY OFFICIALS REPORTED AROUND TWO TENTHS ICE
ACCUMULATION IN BLUE RAPIDS AND A LITTLE OVER A TENTH OF
AN INCH IN MARYSVILLE.

&&

$$

CAVANAUGH

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KTOP [011204]: Preliminary Local Storm Report

NWUS53 KTOP 011204
LSRTOP

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
603 AM CST SAT DEC 01 2007

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

0602 AM FREEZING RAIN BELLEVILLE 39.82N 97.63W
12/01/2007 E0.50 INCH REPUBLIC KS LAW ENFORCEMENT

OFFICER ESTIMATED UP TO A HALF AN INCH OF ICE ON COUNTY
BRIDGES WITH ONLY LIGHT ICE COATING ON ROADS IN CONTACT
WITH THE GROUND.

&&

$$

CAVANAUGH

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KOAX [011152]: Preliminary Local Storm Report

NWUS53 KOAX 011152
LSROAX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
552 AM CST SAT DEC 01 2007

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

0550 AM ICE STORM VALLEY 41.31N 96.35W
12/01/2007 DOUGLAS NE NWS EMPLOYEE

TENTH OF AN INCH ICE ACCUMULATION AT OMAHA/VALLEY NWS.

&&

$$

DEE

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KICT [011146]: Preliminary Local Storm Report

NWUS53 KICT 011146
LSRICT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WICHITA KS
546 AM CST SAT DEC 01 2007

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

0544 AM FREEZING RAIN LINCOLN 39.04N 98.15W
12/01/2007 E0.00 INCH LINCOLN KS LAW ENFORCEMENT

MINOR ELECTRICAL OUTAGE IN SOUTH PART OF LINCOLN. SOME
ICE ACCUMULATION ON ELEVATED SURFACES. NO ACCUMULATION
YET ON ROADWAYS AND WALKS.

&&

$$

KED

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KGJT [011144]: Preliminary Local Storm Report

NWUS55 KGJT 011144
LSRGJT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND JUNCTION CO
444 AM MST SAT DEC 01 2007

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

0400 AM SNOW 6 NNE RANGELY 40.17N 108.74W
12/01/2007 M7.5 INCH RIO BLANCO CO TRAINED SPOTTER

10 HR SNOWFALL

&&

$$

DLC

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KOAX [011142]: Preliminary Local Storm Report

NWUS53 KOAX 011142
LSROAX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
542 AM CST SAT DEC 01 2007

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

0400 AM ICE STORM LINCOLN 40.82N 96.69W
12/01/2007 LANCASTER NE TRAINED SPOTTER

TENTH OF AN INCH ICE ACCUMULATION IN DOWNTOWN LINCOLN.

&&

$$

DEE

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KSGX [011042]: Preliminary Local Storm Report

NWUS56 KSGX 011042
LSRSGX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN DIEGO CA
241 AM PST SAT DEC 01 2007

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

0934 PM FLASH FLOOD 8 E ESCONDIDO 33.14N 116.93W
11/30/2007 SAN DIEGO CA LAW ENFORCEMENT

MUD OR ROCK SLIDE BLOCKING LANES ON SAN PASQUAL VALLEY
ROAD NEAR BANDY CANYON ROAD

1115 PM FLOOD 6 E JULIAN 33.07N 116.48W
11/30/2007 SAN DIEGO CA LAW ENFORCEMENT

MUDSLIDE 100 FEET WIDE ON JULIAN DRIVE AT DEER CANYON
DRIVE.

1201 AM FLASH FLOOD 5 W RANCHO BERNARDO 33.02N 117.15W
12/01/2007 SAN DIEGO CA LAW ENFORCEMENT

MUD OR ROCK SLIDE BLOCKING ONE THIRD OF THE LANE ON DEL
DIOS HIGHWAY AT LAKE HODGES DAM.

1046 PM FLOOD 6 E JAMUL 32.72N 116.79W
11/30/2007 SAN DIEGO CA LAW ENFORCEMENT

ON HONEY SPRINGS ROAD, MUD IS BUILDING UP FROM LYONS
VALLEY TO DEER HORN.

1255 AM FLASH FLOOD 5 N JAMUL 32.79N 116.89W
12/01/2007 SAN DIEGO CA LAW ENFORCEMENT

ROADWAY FLOODING ON SLOANE CANYON ROAD AT DEHESA ROAD

1240 AM FLOOD SUN CITY 33.71N 117.20W
12/01/2007 RIVERSIDE CA LAW ENFORCEMENT

ROAD CLOSURES NEAR SALT CREEK DUE TO FLOODING.

&&

$$

MARTIN

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MESO: Mesoscale Discussion 2171

ACUS11 KWNS 011025
SWOMCD
SPC MCD 011025
KSZ000-011330-

MESOSCALE DISCUSSION 2171
NWS STORM PREDICTION CENTER NORMAN OK
0425 AM CST SAT DEC 01 2007

AREAS AFFECTED...PARTS WEST CENTRAL KS

CONCERNING...FREEZING RAIN

VALID 011025Z - 011330Z

A SHORT DURATION OF FREEZING RAIN WITH RATES UP TO 0.05 INCH IN A 3
HOUR PERIOD WILL BE POSSIBLE ACROSS PART OF WEST CENTRAL KS FROM
GREELEY/WICHITA COUNTIES TO ELLIS/GRAHAM COUNTIES...WITH LIGHTER
AMOUNTS FROM PARTS OF SCOTT TO RUSH COUNTIES. FREEZING RAIN SHOULD
BEGIN BY 12Z...AND THEN END BY MID MORNING AS SURFACE TEMPERATURES
RISE ABOVE 32 F.

SURFACE OBSERVATIONS DURING THE LAST 1-2 HOURS ACROSS SW INTO WEST
CENTRAL KS HAVE SHOWN INCREASING SURFACE DEWPOINTS INTO THE
MID-UPPER 20S WHILE SURFACE TEMPERATURES HAVE HOVERED AROUND THE
29-31 F RANGE. RECENT OBSERVATIONS INDICATED LIGHT PRECIPITATION
DEVELOPING ACROSS PARTS OF SW KS. THIS TREND IS EXPECTED TO
CONTINUE AND EXPAND ACROSS WEST CENTRAL KS WITH SOME INCREASE IN
PRECIPITATION RATES AS LARGE SCALE ASCENT EVIDENT IN AREA OF COOLING
CLOUD TOPS SPREADING EWD INTO THE CENTRAL PLAINS. FORECAST MODELS
AGREE THAT AS THE CO SURFACE LOW CONTINUES TO DEEPEN AND MOVE TOWARD
ERN CO BY EARLY AFTERNOON...SURFACE WINDS ACROSS MUCH OF KS WILL
VEER TO SLY AND COMBINED WITH STRONG LOW LEVEL WAA RESULT IN RISING
SURFACE TEMPERATURES. THUS...FREEZING RAIN EVENT ACROSS THIS PART
OF W CENTRAL KS IS EXPECTED TO BE OF SHORT DURATION.

.PETERS.. 12/01/2007

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

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

ATTN...WFO...GID...DDC...GLD...

39099910 38489943 38260005 38240117 38380170 38700175
39140115 39409986 39419958

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KTOP [011013]: Preliminary Local Storm Report

NWUS53 KTOP 011013
LSRTOP

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
413 AM CST SAT DEC 01 2007

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

0405 AM FREEZING RAIN MARYSVILLE 39.84N 96.65W
12/01/2007 E0.10 INCH MARSHALL KS LAW ENFORCEMENT

&&

$$

CAVANAUGH

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KGID [011005]: Preliminary Local Storm Report

NWUS53 KGID 011005
LSRGID

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
404 AM CST SAT DEC 01 2007

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

0240 AM FREEZING RAIN YORK 40.87N 97.60W
12/01/2007 U0.00 INCH YORK NE DEPT OF HIGHWAYS

REPORT OF INTERSTATE 80 IN YORK COUNTY ICE COVERED.

&&

$$

ODER

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KGID [011003]: Preliminary Local Storm Report

NWUS53 KGID 011003
LSRGID

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
403 AM CST SAT DEC 01 2007

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

0322 AM FREEZING RAIN BURR OAK 39.87N 98.30W
12/01/2007 U0.00 INCH JEWELL KS CO-OP OBSERVER

OBSERVER REPORTED EVERYTHING COVERED IN APPROXIMATELY
1/16 OF AN INCH OF ICE.

&&

$$

ODER

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KGID [010959]: Preliminary Local Storm Report

NWUS53 KGID 010959
LSRGID

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
359 AM CST SAT DEC 01 2007

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

0255 AM FREEZING RAIN 10 N HEBRON 40.31N 97.59W
12/01/2007 U0.00 INCH THAYER NE COUNTY OFFICIAL

RECIEVED REPORT OF SEMI ACCIDENT ON HIGHWAY 81.

&&

$$

ODER

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KICT [010948]: Preliminary Local Storm Report

NWUS53 KICT 010948
LSRICT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WICHITA KS
348 AM CST SAT DEC 01 2007

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

0341 AM FREEZING RAIN LINCOLN 39.04N 98.15W
12/01/2007 E0.00 INCH LINCOLN KS LAW ENFORCEMENT

LIGHT GLAZE OF ICE BEGINNING TO FORM ON ELEVATED
SURFACES. ROADS AND WALKS REMAINED WET BUT NOT FROZEN.

&&

$$

KED

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DAY48SVR: Nws Storm Prediction Center Norman Ok

ACUS48 KWNS 010847
SWOD48
SPC AC 010846

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0246 AM CST SAT DEC 01 2007

VALID 041200Z - 091200Z

..SEVERE POTENTIAL IS NEGLIGIBLE INTO THE LATTER HALF OF THE COMING
WORK WEEK...THEREAFTER PREDICTABILITY BECOMES LOW...

MEDIUM RANGE FORECAST GUIDANCE INDICATES THAT ANOTHER SIGNIFICANT
COLD INTRUSION INTO THE EASTERN STATES WILL MAINTAIN AN AMPLIFIED
UPPER TROUGH INTO THE MIDDLE OF NEXT WEEK. THEREAFTER...THE PATTERN
IS FORECAST TO BECOME A BIT MORE ZONAL. AND...IT APPEARS PROBABLE
THAT THE STABILIZED BOUNDARY LAYER OVER THE GULF OF MEXICO WILL
MODIFY SUBSTANTIALLY BY NEXT WEEKEND. THIS WILL BE POISED TO RETURN
INTO CENTRAL STATES...BUT THE SPREAD AMONG MODELS...AND MREF
MEMBERS...BECOMES QUITE LARGE CONCERNING UPSTREAM DEVELOPMENTS...
WITHIN A SOUTHERN BRANCH OF POLAR WESTERLIES EMANATING FROM THE
PACIFIC.

.KERR.. 12/01/2007

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KPUB [010819]: Preliminary Local Storm Report

NWUS55 KPUB 010819
LSRPUB

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PUEBLO CO
119 AM MST SAT DEC 01 2007

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

0111 AM SNOW 2 NE LEADVILLE 39.27N 106.27W
12/01/2007 M6.3 INCH LAKE CO TRAINED SPOTTER

SNOWFALL FROM 10AM ON 11/30/07 TO MIDNIGHT ON 12/1/07.

&&

$$

LWALROD

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KSGX [010753]: Preliminary Local Storm Report

NWUS56 KSGX 010753
LSRSGX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN DIEGO CA
1153 PM PST FRI NOV 30 2007

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

1151 PM FLASH FLOOD 5 W JULIAN 33.07N 116.67W
11/30/2007 SAN DIEGO CA DEPT OF HIGHWAYS

FLOODING AND A 100 FOOT WIDE MUD SLIDE BLOCKING HWY 78 AT
DEER CANYON ROAD.

&&

$$

MOEDE

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KSGX [010746]: Preliminary Local Storm Report

NWUS56 KSGX 010746
LSRSGX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN DIEGO CA
1146 PM PST FRI NOV 30 2007

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

1143 PM FLASH FLOOD LA QUINTA 33.67N 116.29W
11/30/2007 RIVERSIDE CA TRAINED SPOTTER

FLOODING OF WASHES AND LOW LYING AREAS. MINOR FLOODING ON
HWY 111 FROM LA QUINTA TO INDIO.

&&

$$

MOEDE

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KSGX [010739]: Preliminary Local Storm Report

NWUS56 KSGX 010739
LSRSGX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN DIEGO CA
1139 PM PST FRI NOV 30 2007

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

1130 PM FLASH FLOOD 2 NE VALLEY CENTER 33.24N 116.99W
11/30/2007 SAN DIEGO CA BROADCAST MEDIA

HIGHWAY 76 CLOSED DUE TO ROCKS, MUD AND TREES OVER
ROADWAY NEAR LA JOLLA INDIAN RESERVATION.

&&

$$

MOEDE

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MESO: Mesoscale Discussion 2170

ACUS11 KWNS 010630
SWOMCD
SPC MCD 010629
IAZ000-NEZ000-SDZ000-WYZ000-011000-

MESOSCALE DISCUSSION 2170
NWS STORM PREDICTION CENTER NORMAN OK
1229 AM CST SAT DEC 01 2007

AREAS AFFECTED...FAR SERN WY....MUCH OF NRN/CNTRL NEB...SRN SD

CONCERNING...WINTER MIXED PRECIPITATION

VALID 010629Z - 011000Z

A MIX OF SLEET/FREEZING RAIN/SNOW WILL DEVELOP AS LOW/MID-LEVEL
ASCENT STRENGTHENS OVERNIGHT. THERMODYNAMIC PROFILES APPEAR TO FAVOR
MAINLY SLEET ACROSS NEB...WITH A TRANSITION TO FREEZING RAIN LIKELY
OCCURRING ALONG AND JUST N OF THE I-80 CORRIDOR TOWARDS 12Z. ACROSS
S-CNTRL/SERN SD...PTYPE IS MORE UNCERTAIN WITH EITHER SNOW OR SLEET
BECOMING MODERATE IN INTENSITY BY 12Z.

RECENT SATELLITE IMAGERY DEPICTS COOLING CLOUD TOPS ARCING FROM THE
SRN ROCKIES ONTO THE CNTRL SRN HIGH PLAINS INDICATIVE OF
STRENGTHENING ASCENT DOWNSTREAM OF LARGE-SCALE TROUGH OVER THE WRN
CONUS. LATEST SHORT-TERM MODEL FORECAST GUIDANCE INDICATES RAPID
STRENGTHENING OF 850 TO 700 MB S/SWLY FLOW ACROSS THE CNTRL PLAINS
WITH INCREASING FRONTOGENETICAL FORCING BECOMING CENTERED FROM THE
NEB PANHANDLE E/NEWD TOWARDS SERN SD/NERN NEB. THE END RESULT SHOULD
BE A FOCUSED AXIS OF WINTERY PRECIPITATION COMMENCING BY
09Z...INCREASING IN INTENSITY/COVERAGE TOWARDS DAYBREAK.

THERE IS SOME UNCERTAINTY IN EXPECTED PTYPE GIVEN THAT REGIONAL 00Z
RAOBS INDICATED WET-BULB TEMPERATURES AOB FREEZING THROUGHOUT THE
ATMOSPHERIC COLUMN. MODEL FORECAST SOUNDINGS AND SREF PROBABILISTIC
GUIDANCE SEEM TO FAVOR SLEET AS THE PREDOMINANT PTYPE WITH A
TRANSITION TO FREEZING RAIN ALONG THE SRN PORTION OF THE MD AREA
OWING TO INTENSE WARM/MOIST ADVECTION IN THE LOW-LEVELS. FARTHER N
ACROSS S-CNTRL/SERN SD...INITIAL SNOW MAY TRANSITION TO A MIX OF
SNOW/SLEET WITH TIME.

.GRAMS.. 12/01/2007

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

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

ATTN...WFO...FSD...OAX...ABR...GID...LBF...UNR...GLD...CYS...

42969622 42169590 41479590 41409726 41319824 40929934
40320004 40320077 40720158 41180232 41320310 41400387
41690455 42020491 42710473 43210373 43880151 44149849
44129732 43739672

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 010555
SWODY1
SPC AC 010552

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1152 PM CST FRI NOV 30 2007

VALID 011200Z - 021200Z

..NO SVR TSTM AREAS FORECAST...

..SYNOPSIS...

SHORTWAVE TROUGH NOW EJECTING INTO THE SWRN U.S. WILL CONTINUE NEWD
THROUGH THE CNTRL PLAINS AND UPPER MS VALLEY AREA SATURDAY...WHILE
UPSTREAM SHORTWAVE DROPPING INTO NRN CA FOLLOWS CLOSE ON ITS HEELS.
AS THE INITIAL WAVE MOVES TOWARD CO...A SURFACE LOW WILL DEEPEN AND
CONSOLIDATE OVER THE CNTRL HIGH PLAINS. THIS LOW WILL SHIFT EWD INTO
THE MS VALLEY SATURDAY NIGHT IN ASSOCIATION WITH EJECTING LEAD
SHORTWAVE TROUGH...ALLOWING A COLD FRONT TO DROP SWD INTO THE CNTRL
PLAINS. DIFFUSE DRYLINE MAY SETUP ACROSS WRN TX DURING THE DAY. THIS
FEATURE WILL LIKELY BE OVERTAKEN BY A SECONDARY COLD FRONT ATTENDING
THE UPSTREAM SHORTWAVE TROUGH THAT WILL MOVE INTO THE SRN HIGH
PLAINS SATURDAY NIGHT.

..CNTRL PLAINS THROUGH MID AND UPPER MS VALLEY REGION...

GRADIENT BETWEEN DEEPENING HIGH PLAINS SURFACE LOW AND HIGH PRESSURE
OVER THE ERN STATES WILL RESULT IN THE DEVELOPMENT OF A 70 KT SSWLY
LOW LEVEL JET EARLY SATURDAY OVER THE SRN AND CNTRL PLAINS. THIS
FEATURE WILL VEER AND SHIFT NEWD INTO THE MS VALLEY DURING THE DAY
AS THE INITIAL SHORTWAVE TROUGH EJECTS NEWD. LIFT AND STRONG WARM
ADVECTION ON THE NOSE OF THE LOW LEVEL JET AND LARGE PLUME OF
MID-HIGH LEVEL SUBTROPICAL MOISTURE WILL RESULT IN WIDESPREAD
PRECIPITATION OVER PORTIONS OF THE CNTRL AND NRN PLAINS THROUGH THE
UPPER MS VALLEY DURING THE DAY. HOWEVER...WEAK LAPSE RATES WILL
INITIALLY LIMIT POTENTIAL FOR LIGHTNING. THREAT FOR THUNDERSTORMS
MAY INCREASE LATER IN THE DAY WITH ELEVATED CONVECTION DEVELOPING ON
THE SRN END OF THIS COMPLEX OR IN POST FRONTAL ZONE AS STEEPER LAPSE
RATES SPREAD EWD THROUGH THE CNTRL PLAINS. HOWEVER...INSTABILITY IS
EXPECTED TO REMAIN TOO LIMITED FOR A HAIL THREAT.

..SRN PLAINS...

CIRCULATION AROUND ERN U.S. HIGH PRESSURE IS MAINTAINING FEED OF CP
AIR INTO MUCH OF THE WRN AND CNTRL GULF. THIS IS SLOWING BOUNDARY
LAYER MODIFICATION AND MAINTAINING ONLY 50S TO LOWER 60S DEWPOINTS
OVER ALL EXCEPT DEEP S TX. LOW LEVEL TRAJECTORIES WILL BECOME MORE
SLY AS THE HIGH CENTER SHIFTS EAST SATURDAY. HOWEVER...MOISTURE
RETURN WILL LIKELY REMAIN SOMEWHAT LIMITED WITH AN AXIS OF LOWER 60S
DEWPOINTS POSSIBLE AS FAR NORTH AS OK WITH MID TO UPPER 60S LIKELY
REMAINING CONFINED TO CNTRL AND S TX. WIDESPREAD SUBTROPICAL
MOISTURE PLUME OVERSPREADING THE MOISTENING WARM SECTOR ALONG WITH
WEAK LAPSE RATES WILL RESULT IN VERY MARGINAL INSTABILITY WITH
MUCAPE BELOW 500 J/KG. MOREOVER...WITH THE STRONGER FORCING SHIFTING
NORTH OF THIS REGION DURING THE DAY ...THE WARM SECTOR WILL LIKELY
REMAIN CAPPED TO SURFACE BASED STORMS. MODELS SUGGEST DEEPER
CONVECTION MAY DEVELOP OVERNIGHT AHEAD OF FRONT WITHIN ZONE OF LOW
LEVEL CONFLUENCE AND INCREASING ASCENT AHEAD OF SECONDARY SHORTWAVE
TROUGH FROM PARTS OF N TX INTO OK. HOWEVER...THIS ACTIVITY IS
EXPECTED TO BE ELEVATED...AND GIVEN THE EXPECTED MARGINAL
THERMODYNAMIC ENVIRONMENT...ANY SEVERE THREAT SHOULD REMAIN LOW.

.DIAL.. 12/01/2007

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 010523
SWODY2
SPC AC 010520

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1120 PM CST FRI NOV 30 2007

VALID 021200Z - 031200Z

..NO SVR TSTM AREAS FORECAST...

..SYNOPSIS...
MODELS INDICATE THAT A STRONG ZONAL UPPER JET STREAK OVER THE
PACIFIC WILL CONTINUE UNDERCUTTING A HIGH LATITUDE BLOCK DURING THIS
FORECAST PERIOD. AND...AN ASSOCIATED SIGNIFICANT MID-LEVEL SHORT
WAVE IMPULSE IS PROGGED TO BEGIN LIFTING TOWARD BRITISH
COLUMBIA/PACIFIC NORTHWEST COASTAL AREAS...AS THE CLOSED LOW PORTION
OF BLOCKING PATTERN BEGINS TO SHIFT NORTHWEST OF BRITISH COLUMBIA.
AS THIS OCCURS...A DOWNSTREAM RIDGE IS FORECAST TO BUILD ACROSS MUCH
OF THE INTERMOUNTAIN WEST AND ROCKIES...FORCING THE NORTHEASTWARD
ACCELERATION OF A VIGOROUS SHORT WAVE TROUGH OUT OF THE SOUTH
CENTRAL HIGH PLAINS. IT APPEARS PROBABLE THAT THE LATTER FEATURE
WILL REACH THE UPPER OHIO VALLEY/CENTRAL APPALACHIANS BY LATE SUNDAY
EVENING...GRADUALLY BECOMING ABSORBED WITHIN AN EVOLVING BROADER
SCALE UPPER TROUGH OVER THE EASTERN STATES.

IN RESPONSE TO THE DEVELOPING UPPER PATTERN...A SLOWLY DEEPENING
SURFACE CYCLONE IS FORECAST TO MIGRATE THROUGH THE GREAT LAKES
REGION...BEFORE NEW CYCLOGENESIS BEGINS TO TAKE PLACE NEAR SOUTHERN
NEW ENGLAND COASTAL AREAS LATE SUNDAY NIGHT. AN ASSOCIATED COLD
INTRUSION IS EXPECTED TO REACH THE APPALACHIANS AND WESTERN/CENTRAL
GULF COAST BY LATE SUNDAY EVENING...BEFORE ADVANCING THROUGH MUCH OF
THE REMAINDER OF THE EASTERN STATES EARLY MONDAY.

..MIDDLE MISSISSIPPI AND OHIO VALLEYS...
LATEST MODEL RUNS APPEAR A BIT SLOWER WITH THE PROGRESSION OF THE
SHORT WAVE IMPULSE OUT OF THE SOUTH CENTRAL PLAINS...WITH PERHAPS A
LARGER WINDOW OF OPPORTUNITY FOR INTERACTION WITH A MODEST RETURN
FLOW OF MOISTURE FROM THE GULF OF MEXICO. HOWEVER...WHILE IT NOW
SEEMS PROBABLE THAT DESTABILIZATION WILL FAVOR THE DEVELOPMENT OF
THERMODYNAMIC PROFILES SUPPORTIVE OF THUNDERSTORMS ...MAXIMUM CAPE
ON THE ORDER OF 500 J/KG OR LESS IN THE WARM SECTOR OF SURFACE
CYCLONE IS EXPECTED TO MINIMIZE UPDRAFT STRENGTH AND SEVERE
POTENTIAL.

WEAK HEATING BENEATH DRY SLOT WITHIN WARM SECTOR COULD SUPPORT A
DEVELOPING LINE OF STORMS BY MID DAY SUNDAY ACROSS PARTS OF EASTERN
MISSOURI/CENTRAL AND SOUTHERN ILLINOIS...AS UPSTREAM SHORT WAVE
TROUGH APPROACHES. ALTHOUGH LIMITED UPDRAFT STRENGTH WILL PROBABLY
SUPPRESS HAIL POTENTIAL...ACTIVITY IS EXPECTED TO BE EMBEDDED WITHIN
A 50+ KT MEAN WESTERLY FLOW REGIME. THIS SHOULD CONTRIBUTE TO RAPID
STORM MOTION EASTWARD THROUGH THE OHIO VALLEY SUNDAY
AFTERNOON...PERHAPS ACCOMPANIED BY SPORADIC DAMAGING WIND GUSTS
APPROACHING OR BRIEFLY EXCEEDING SEVERE LIMITS...BEFORE CONVECTION
WEAKENS WEST OF THE NORTH CENTRAL APPALACHIANS SUNDAY EVENING.

.KERR.. 12/01/2007

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