KDVN [130342]: Preliminary Local Storm Report

NWUS53 KDVN 130342
LSRDVN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
942 PM CST WED DEC 12 2007

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

0940 PM SNOW MEMPHIS 40.46N 92.17W
12/12/2007 E0.3 INCH SCOTLAND MO TRAINED SPOTTER

SNOW HAS DIMINISHED TO FLURRIES.

&&

$$

BILLN

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 130038
SWODY1
SPC AC 130035

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0635 PM CST WED DEC 12 2007

VALID 130100Z - 131200Z

..NO SVR TSTM AREAS FORECAST...

WATER VAPOR IMAGERY SHOWS STRONG UPPER TROUGH OVER NM. THIS FEATURE
WILL TRACK NORTHEASTWARD ACROSS THE SOUTHERN PLAINS TONIGHT...AND
INTO THE MID MS VALLEY BY THU MORNING. MODEL GUIDANCE IS IN
AGREEMENT THAT LOW LEVEL JET NOW OVER EAST TX WILL STRENGTHEN
OVERNIGHT AND MOVE INTO THE OH VALLEY. ENHANCED LOW LEVEL WARM
ADVECTION AND LIFT WILL PROVIDE THE POTENTIAL FOR ISOLATED
THUNDERSTORMS ALONG AN AXIS FROM NORTHEAST TX...ACROSS MUCH OF
AR/TN/KY...AND POSSIBLY AS FAR EAST AS SOUTHERN OH/WESTERN WV BY
13/12Z. NO SEVERE STORMS ARE ANTICIPATED OVER THIS AREA TONIGHT.

.HART.. 12/13/2007

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KIND [130023]: Preliminary Local Storm Report

NWUS53 KIND 130023
LSRIND

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
723 PM EST WED DEC 12 2007

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

0710 PM FLOOD 2 W RIDGEVILLE 40.29N 85.07W
12/12/2007 RANDOLPH IN LAW ENFORCEMENT

LAW ENFORCEMENT REPORTS ONGOING FLOODING AT STATE ROADS 1
AND 28 WEST OF RIDGEVILLE.

&&

$$

JOHNSON

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KCYS [122206]: Preliminary Local Storm Report

NWUS55 KCYS 122206 CCA
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
305 PM MST WED DEC 12 2007

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

0235 PM NON-TSTM WND GST 9 W MEDICINE BOW 41.91N 106.38W
12/12/2007 M43 MPH CARBON WY MESONET

0241 PM NON-TSTM WND GST ARLINGTON 41.59N 106.21W
12/12/2007 M43 MPH CARBON WY MESONET

0254 PM NON-TSTM WND GST ESTERBROOK 42.41N 105.36W
12/12/2007 M41 MPH CONVERSE WY MESONET

0240 PM NON-TSTM WND GST BUFORD 41.11N 105.30W
12/12/2007 M51 MPH ALBANY WY MESONET

0200 PM NON-TSTM WND GST 2 SE I-80 MM 348 41.08N 105.04W
12/12/2007 M58 MPH LARAMIE WY MESONET

0200 PM NON-TSTM WND GST 5 S I-80 MM 342 41.02N 105.16W
12/12/2007 M45 MPH LARAMIE WY MESONET

0236 PM NON-TSTM WND GST BORDEAUX 41.95N 104.95W
12/12/2007 M63 MPH PLATTE WY MESONET

SUSTAINED WINDS OF 48 MPH.

0241 PM NON-TSTM WND GST 6 S SOUTH GREELEY HIGHW 41.01N 104.81W
12/12/2007 M38 MPH LARAMIE WY MESONET

&&

$$

SRUBIN

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KCYS [122205]: Preliminary Local Storm Report

NWUS55 KCYS 122205
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
305 PM MST WED DEC 12 2007

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

0235 PM NON-TSTM WND GST 9 W MEDICINE BOW 41.91N 106.38W
12/12/2007 M43 MPH CARBON WY MESONET

0241 PM NON-TSTM WND GST ARLINGTON 41.59N 106.21W
12/12/2007 M43 MPH CARBON WY ASOS

0254 PM NON-TSTM WND GST ESTERBROOK 42.41N 105.36W
12/12/2007 M41 MPH CONVERSE WY MESONET

0240 PM NON-TSTM WND GST BUFORD 41.11N 105.30W
12/12/2007 M51 MPH ALBANY WY MESONET

0200 PM NON-TSTM WND GST 2 SE I-80 MM 348 41.08N 105.04W
12/12/2007 M58 MPH LARAMIE WY MESONET

0200 PM NON-TSTM WND GST 5 S I-80 MM 342 41.02N 105.16W
12/12/2007 M45 MPH LARAMIE WY MESONET

0236 PM NON-TSTM WND GST BORDEAUX 41.95N 104.95W
12/12/2007 M63 MPH PLATTE WY MESONET

SUSTAINED WINDS OF 48 MPH.

0241 PM NON-TSTM WND GST 6 S SOUTH GREELEY HIGHW 41.01N 104.81W
12/12/2007 M38 MPH LARAMIE WY MESONET

&&

$$

SRUBIN

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KCYS [122100]: Preliminary Local Storm Report

NWUS55 KCYS 122100
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
200 PM MST WED DEC 12 2007

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

0140 PM NON-TSTM WND GST HORSE CREEK 41.41N 105.18W
12/12/2007 M45 MPH LARAMIE WY CO-OP OBSERVER

WIND GUSTS OF 35 TO 45 MPH. WIDESPREAD BLOWING SNOW AND
WHITE OUT CONDITIONS WITH NEAR ZERO VISIBILITY.

&&

$$

SRUBIN

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KABQ [122057]: Preliminary Local Storm Report

NWUS55 KABQ 122057
LSRABQ

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ALBUQUERQUE NM
156 PM MST WED DEC 12 2007

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

0630 AM SNOW 6 SSE SANTA FE 35.60N 105.93W
12/12/2007 M3.5 INCH SANTA FE NM CO-OP OBSERVER

ADDITIONAL 1.7 INCHES SINCE LAST REPORT.

0630 AM SNOW 3 SW LOS ALAMOS 35.86N 106.32W
12/12/2007 M7.0 INCH LOS ALAMOS NM CO-OP OBSERVER

0700 AM SNOW EAGLE NEST 36.56N 105.26W
12/12/2007 M11.5 INCH COLFAX NM CO-OP OBSERVER

ADDITIONAL 5.0 INCHES SINCE LAST REPORT.

0700 AM SNOW 3 SSW ENCINO 34.62N 105.47W
12/12/2007 M2.7 INCH TORRANCE NM CO-OP OBSERVER

1025 AM SNOW 4 W SAPELLO 35.77N 105.32W
12/12/2007 M4.0 INCH SAN MIGUEL NM TRAINED SPOTTER

1227 PM SNOW GLORIETA 35.58N 105.77W
12/12/2007 M5.0 INCH SANTA FE NM CO-OP OBSERVER

3 ADDITIONAL INCHES SINCE NOON ON TUESDAY.

1233 PM SNOW ANGEL FIRE 36.39N 105.29W
12/12/2007 M10.0 INCH COLFAX NM CO-OP OBSERVER

1250 PM SNOW RED RIVER 36.71N 105.41W
12/12/2007 E6.0 INCH TAOS NM EMERGENCY MNGR

0110 PM SNOW 19 NE PIETOWN 34.49N 107.89W
12/12/2007 E6.0 INCH CATRON NM CO-OP OBSERVER

0134 PM SNOW DATIL 34.15N 107.84W
12/12/2007 E5.0 INCH CATRON NM OTHER FEDERAL

ADDITIONAL 2 INCHES SINCE 430 PM TUESDAY.

&&

$$

SHOEMAKE

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 121923
SWODY1
SPC AC 121921

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0121 PM CST WED DEC 12 2007

VALID 122000Z - 131200Z

..NO SVR TSTM AREAS FORECAST...

..SYNOPSIS...
IN THE MORE ZONAL NORTHERN BRANCH OF THE SPLIT BELT OF POLAR
WESTERLIES EMANATING FROM THE NORTHERN PACIFIC...A VIGOROUS SHORT
WAVE TROUGH IS IN THE PROCESS DIGGING TO THE SOUTHEAST OF THE
CANADIAN/NORTHERN U.S. ROCKIES. THIS FEATURE HAS CONTRIBUTED TO THE
NORTHEASTWARD ACCELERATION OF A SIGNIFICANT IMPULSE OUT OF THE
SOUTHWESTERN U.S. SOUTHERN BRANCH TROUGH.

THE MID-LEVEL CIRCULATION ASSOCIATED WITH THE LATTER SYSTEM IS IN
THE PROCESS OF WEAKENING OVER THE SOUTHERN ROCKIES...AND WILL LIKELY
BECOME INCREASINGLY SHEARED AS IT LIFTS ACROSS THE SOUTH CENTRAL
PLAINS INTO THE MIDDLE MISSISSIPPI VALLEY LATER TODAY THROUGH 12Z
THURSDAY. THIS IS FORECAST TO OCCUR AS THE NORTHERN IMPULSE TURNS
EAST SOUTHEASTWARD INTO THE UPPER MISSISSIPPI VALLEY. BUT...THE
ASSOCIATED FORCING IS EXPECTED TO CONTRIBUTE TO MORE SUBSTANTIAL
DEVELOPMENT OF A LOW AMPLITUDE SURFACE FRONTAL WAVE LIFTING OUT OF
THE LOWER MISSISSIPPI VALLEY...INTO PARTS OF THE MIDDLE/UPPER OHIO
VALLEY BY EARLY THURSDAY.

..EASTERN TEXAS THROUGH THE OHIO VALLEY...
THE SOUTHEASTERN STATES SUBTROPICAL RIDGE IS SLOWLY BEGINNING TO
WEAKEN. BUT...A RELATIVELY WARM MID-LEVEL ENVIRONMENT ASSOCIATED
WITH IT IS CAPPING THE MOIST BOUNDARY LAYER TO THE SOUTHEAST OF
SURFACE FRONT ADVANCING ACROSS WESTERN GULF COASTAL AREAS...AND
TOWARD THE EASTERN GULF STATES/UPPER TENNESSEE VALLEY/CENTRAL
APPALACHIANS.

CONSIDERABLE INHIBITION EXISTS EVEN TO THE IMMEDIATE COOL SIDE OF
THE SURFACE FRONT...FROM CENTRAL/EASTERN TEXAS THROUGH THE LOWER
OHIO VALLEY...WHERE AN ELEVATED MOIST LAYER LINGERS ABOVE THE
FRONTAL INVERSION. BUT...ENHANCED ISENTROPIC ASCENT AHEAD OF THE
SOUTHERN BRANCH IMPULSE HAS BEEN SUFFICIENT TO SUPPORT SCATTERED
ONGOING STORMS ACROSS PARTS OF NORTHERN TEXAS. THE CONVECTION IS
MOSTLY BASED IN THE 850-700 MB LAYER...WITH ONLY VERY WEAK CAPE ON
THE ORDER OF A COUPLE HUNDRED J/KG AT BEST. SO...STORMS ARE
EXPECTED TO REMAIN WEAK...AND MAY NEVER BECOME PARTICULARLY
WIDESPREAD. HOWEVER...ACTIVITY PROBABLY WILL CONTINUE TO GRADUALLY
DEVELOP EAST NORTHEASTWARD ACROSS THE ARKLATEX REGION AND PARTS OF
THE LOWER OHIO/TENNESSEE VALLEYS THROUGH THE REMAINDER OF THE
PERIOD. BY OR SHORTLY AFTER 12Z THURSDAY...SOME INCREASE IN
COVERAGE COULD ACCOMPANY THE DEVELOPING FRONTAL WAVE ACROSS THE
UPPER OHIO VALLEY/CENTRAL APPALACHIANS.

..SOUTHERN ROCKIES...
WEAK DESTABILIZATION HAS OCCURRED BENEATH THE MID-LEVEL COLD CORE OF
THE SOUTHERN BRANCH IMPULSE. WHILE AN ISOLATED THUNDERSTORM APPEARS
POSSIBLE...MAINLY NEAR THE SACRAMENTO MOUNTAINS OF SOUTH CENTRAL NEW
MEXICO...NEARLY NEGLIGIBLE CONVECTIVE POTENTIAL IS EXPECTED TO
DIMINISH BY LATE AFTERNOON AS UPPER SYSTEM LIFTS INTO THE SOUTH
CENTRAL PLAINS.

.KERR.. 12/12/2007

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 121728
SWODY2
SPC AC 121726

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1126 AM CST WED DEC 12 2007

VALID 131200Z - 141200Z

..NO SVR TSTM AREAS FORECAST...

..SYNOPSIS...
A COMPLEX SPLIT UPPER FLOW CONTINUES...FROM THE PACIFIC...THROUGH
MUCH OF NORTH AMERICA...INTO THE SOUTHEASTERN PERIPHERY OF A
NORTHEASTERN CANADIAN POLAR VORTEX. PERHAPS MOST PROMINENT TO THE
U.S...IS A SPLIT BELT EMANATING FROM THE NORTHERN PACIFIC...WITH A
SERIES OF EMBEDDED SHORT WAVE IMPULSES DIGGING INTO/THROUGH A
SOUTHERN BRANCH TROUGH OVER THE SOUTHWESTERN STATES...AND A MORE
ZONAL STREAM ACROSS THE NORTHERN TIER STATES.

IN PARTICULAR...MODELS INDICATE THAT ONE SIGNIFICANT SHORT WAVE
TROUGH...NOW DIGGING TO THE LEE OF THE CANADIAN ROCKIES...WILL
CONTINUE THROUGH THE UPPER MISSISSIPPI VALLEY BY 12Z THURSDAY...AND
ACROSS THE GREAT LAKES INTO NORTHERN NEW ENGLAND BY 12Z FRIDAY.
THIS FEATURE HAS CONTRIBUTED TO THE NORTHEASTWARD ACCELERATION OF A
SIGNIFICANT SOUTHERN STREAM IMPULSE...WHICH IS BECOMING INCREASINGLY
SHEARED AS IT LIFTS NORTHEAST OF THE SOUTHERN ROCKIES. REMNANTS OF
THE LATTER SYSTEM ARE PROGGED TO MOVE RAPIDLY THROUGH THE OHIO
VALLEY EARLY THURSDAY...BEFORE CONTINUING OFF NORTHERN/MID ATLANTIC
COASTAL AREAS THURSDAY EVENING. AS THIS OCCURS...AND A WEAK
TROPICAL SYSTEM CONTINUES WESTWARD THROUGH THE CARIBBEAN...THE
SEASONABLY STRONG SUBTROPICAL RIDGE OVER THE SOUTHEAST IS EXPECTED
TO FINALLY WEAKEN. AND...IN CONJUNCTION WITH FORCING ASSOCIATED
WITH THE SOUTHERN BRANCH IMPULSE...WEAK WAVE DEVELOPMENT MAY OCCUR
ALONG A SURFACE FRONT...TO THE WEST OF THE CENTRAL APPALACHIANS BY
EARLY THURSDAY...AND NEAR/EAST OF NORTHERN MID ATLANTIC COASTAL
AREAS LATER THURSDAY/THURSDAY NIGHT.

..NRN GULF/SOUTH ATLANTIC COAST STATES INTO NEW ENGLAND...
WITH THE SUPPRESSION OF GULF MOISTURE RETURN...AND A SHRINKING MOIST
WARM SECTOR DUE TO COLD INTRUSIONS TO THE LEE OF THE SOUTHERN
ROCKIES...AND THE NORTHERN/CENTRAL APPALACHIANS... CONVECTIVE
POTENTIAL DURING THIS PERIOD IS LOW. BUT...MOISTURE LEVELS WILL
REMAIN RELATIVELY MODEST AT LEAST INTO EARLY THURSDAY...AHEAD OF A
COLD FRONT ADVANCING INTO THE EASTERN GULF STATES/UPPER TENNESSEE
VALLEY/CENTRAL APPALACHIANS. AS THIS AIR IS LIFTED IN A STRONG
LOW/MID TROPOSPHERIC WARM ADVECTION REGIME...NORTHEAST OF THE
DEVELOPING WEAK SURFACE CYCLONE ACROSS THE UPPER OHIO
VALLEY...SUFFICIENT DESTABILIZATION IS EXPECTED FOR CONVECTIVE
DEVELOPMENT. ALTHOUGH MOST UNSTABLE CAPE ABOVE THE WARM FRONTAL
INVERSION LAYER IS GENERALLY ONLY PROGGED AROUND 100 J/KG OR
LESS...FORECAST SOUNDINGS SUGGEST THAT IT WILL EXTEND THROUGH THE
FAVORABLE MIXED PHASE LAYER FOR CHARGE SEPARATION/ CLOUD
ELECTRIFICATION. THUS...A FEW WEAK THUNDERSTORMS APPEAR
POSSIBLE...MOSTLY DURING THE 13/12-21Z TIME FRAME...BEFORE SECONDARY
SURFACE LOW DEVELOPMENT OCCURS OFF THE NORTHERN MID ATLANTIC COAST.

..FLORIDA PENINSULA...
DESTABILIZATION IS EXPECTED ACROSS SOUTHEASTERN COASTAL AREAS AND
THE KEYS...ASSOCIATED WITH THE INFLUX OF TROPICAL BOUNDARY LAYER
MOISTURE TO THE NORTHEAST OF OLGA. AND...AS MID/UPPER SUBTROPICAL
RIDGE WEAKENS...POTENTIAL FOR SCATTERED THUNDERSTORM ACTIVITY IS
EXPECTED TO INCREASE BY LATE THURSDAY/THURSDAY NIGHT.

.KERR.. 12/12/2007

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KARX [121701]: Preliminary Local Storm Report...summary

NWUS53 KARX 121701
LSRARX

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE LA CROSSE WI
1101 AM CST WED DEC 12 2007

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

0415 AM FREEZING RAIN WEST UNION 42.96N 91.81W
12/11/2007 E0.05 INCH FAYETTE IA AMATEUR RADIO

LIGHT GLAZE OF ICE ACCUMULATION AT WEST
UNION...FAIRBANK...AND OELWEIN.

0425 AM FREEZING RAIN CHARLES CITY 43.07N 92.68W
12/11/2007 E0.05 INCH FLOYD IA AMATEUR RADIO

LIGHT GLAZE OF ICE ACCUMULATION.

0438 AM FREEZING RAIN VICTORY 43.48N 91.22W
12/11/2007 E0.10 INCH VERNON WI CO-OP OBSERVER

SLEET AND FREEZING RAIN MIX. LIGHT GLAZE OF ICE.

0514 AM FREEZING RAIN EDGEWOOD 42.65N 91.40W
12/11/2007 M0.20 INCH CLAYTON IA TRAINED SPOTTER

SNOW AND SLEET ACCUMULATION WAS 1 INCH

0615 AM SLEET PLATTEVILLE 42.74N 90.48W
12/11/2007 M1.50 INCH GRANT WI TRAINED SPOTTER

SOME OF THE SLEET ACCUMULATION INCLUDED SNOW

1025 AM FREEZING RAIN 2 NW CUBA CITY 42.62N 90.46W
12/11/2007 M0.10 INCH GRANT WI CO-OP OBSERVER

TENTH OF AN INCH OF GLAZE WITH FREEZING RAIN. ALSO HAD
SNOW AND SLEET MIXTURE WITH 1 INCH OF SNOW AND SLEET.

1100 AM FREEZING RAIN SINSINAWA 42.52N 90.53W
12/11/2007 E0.25 INCH GRANT WI PUBLIC

PUBLIC REPORTS QUARTER OF AN INCH OF ICE ON CARS. ALSO
ESTIMATES TWO TO THREE INCHES OF SNOWFALL ACCUMULATION.

&&

$$

DTJ

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KARX [121659]: Preliminary Local Storm Report

NWUS53 KARX 121659
LSRARX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LA CROSSE WI
1059 AM CST WED DEC 12 2007

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

1100 AM FREEZING RAIN SINSINAWA 42.52N 90.53W
12/11/2007 E0.25 INCH GRANT WI PUBLIC

PUBLIC REPORTS QUARTER OF AN INCH OF ICE ON CARS. ALSO
ESTIMATES TWO TO THREE INCHES OF SNOWFALL ACCUMULATION.

&&

$$

DTJ

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KGRR [121630]: Preliminary Local Storm Report...corrected

NWUS53 KGRR 121630
LSRGRR

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1130 AM EST WED DEC 12 2007

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

1117 AM SLEET ALLEGAN 42.53N 85.85W
12/11/2007 E0.10 INCH ALLEGAN MI COUNTY OFFICIAL

SNOW MIXED WITH SLEET. COUNTY WIDE.

1117 AM SLEET HASTINGS 42.65N 85.29W
12/11/2007 E0.25 INCH BARRY MI COUNTY OFFICIAL

SNOW MIXED WITH SLEET COUNTY WIDE.

1117 AM SLEET CHARLOTTE 42.56N 84.83W
12/11/2007 E0.10 INCH EATON MI COUNTY OFFICIAL

SLEET MIXED WITH RAIN COUNTY WIDE.

0330 PM FREEZING RAIN 1 N HOLLAND 42.79N 86.10W
12/11/2007 E0.10 INCH OTTAWA MI TRAINED SPOTTER

ALSO 1 INCH OF SNOW AND 0.1 INCHES OF SLEET/ICE PELLETS.
TOTAL PRECIPITATION 0.41 INCHES.

0359 PM SNOW 5 W HOLTON 43.42N 86.18W
12/11/2007 M5.0 INCH MUSKEGON MI TRAINED SPOTTER

TOTAL FOR THE DAY. 8 INCHES ON THE GROUND.

0359 PM SNOW WHITE CLOUD 43.55N 85.77W
12/11/2007 M5.0 INCH NEWAYGO MI BROADCAST MEDIA

0459 PM SNOW 10 W HESPERIA 43.57N 86.24W
12/11/2007 M6.0 INCH OCEANA MI BROADCAST MEDIA

FERRY TOWNSHIP TOTAL FOR THE DAY. 10 INCHES ON THE
GROUND.

0529 PM SNOW BIG RAPIDS 43.70N 85.49W
12/11/2007 E6.0 INCH MECOSTA MI TRAINED SPOTTER

0533 PM SNOW MOUNT PLEASANT 43.61N 84.75W
12/11/2007 M5.0 INCH ISABELLA MI TRAINED SPOTTER

0653 PM SNOW 9 E WHITE CLOUD 43.55N 85.59W
12/11/2007 M6.0 INCH NEWAYGO MI TRAINED SPOTTER

0700 PM SNOW BARRYTON 43.75N 85.14W
12/11/2007 E8.0 INCH MECOSTA MI PUBLIC

STORM TOTAL

0700 PM SNOW PARIS 43.77N 85.50W
12/11/2007 E6.0 INCH MECOSTA MI BROADCAST MEDIA

STORM TOTAL

0700 PM SNOW LAKE 43.85N 85.01W
12/11/2007 E6.0 INCH CLARE MI BROADCAST MEDIA

STORM TOTAL

0700 PM SNOW RODNEY 43.67N 85.32W
12/11/2007 E5.0 INCH MECOSTA MI BROADCAST MEDIA

STORM TOTAL

0700 PM SNOW TALLMAN 43.98N 86.12W
12/11/2007 E5.0 INCH MASON MI BROADCAST MEDIA

STORM TOTAL

0700 PM SNOW LUDINGTON 43.96N 86.44W
12/11/2007 E2.0 INCH MASON MI PUBLIC

0700 PM SNOW GRAND RAPIDS 42.96N 85.66W
12/11/2007 M0.5 INCH KENT MI OFFICIAL NWS OBS

1 INCH SNOW DEPTH

0700 PM SNOW LANSING 42.71N 84.55W
12/11/2007 E0.0 INCH INGHAM MI OFFICIAL NWS OBS

1 INCH SNOW DEPTH

0700 PM SNOW MUSKEGON 43.23N 86.26W
12/11/2007 M0.5 INCH MUSKEGON MI OFFICIAL NWS OBS

4 INCH SNOW DEPTH

1000 PM SNOW BRECKENRIDGE 43.41N 84.48W
12/11/2007 E1.0 INCH GRATIOT MI TRAINED SPOTTER

1016 PM SNOW ITHACA 43.29N 84.60W
12/11/2007 E0.1 INCH GRATIOT MI LAW ENFORCEMENT

MIXTURE OF PRECIPITATION IN ITHACA. SNOW OCCURRED MAINLY
AT END OF THE EVENT AND WAS A DUSTING.

1016 PM SNOW LE ROY 44.04N 85.45W
12/11/2007 E6.0 INCH OSCEOLA MI LAW ENFORCEMENT

1016 PM SNOW BALDWIN 43.90N 85.85W
12/11/2007 E4.0 INCH LAKE MI LAW ENFORCEMENT

1016 PM SNOW PENTWATER 43.78N 86.43W
12/11/2007 E3.0 INCH OCEANA MI LAW ENFORCEMENT

&&

$$

OSTUNO

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 121602
SWODY1
SPC AC 121559

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0959 AM CST WED DEC 12 2007

VALID 121630Z - 131200Z

..NO SVR TSTM AREAS FORECAST...

..SYNOPSIS...
PATTERN WILL BECOME MORE ZONAL THIS PERIOD AS SW U.S. TROUGH
PARTIALLY PHASES WITH CNTRL PLNS IMPULSE...YIELDING A POSITIVE TILT
TROUGH THAT PROGRESSES E TO THE MID MS/LWR OH VLYS. FARTHER NW...A
SERIES OF NRN STREAM DISTURBANCES WILL CONTINUE ESE IN FAST FLOW
FROM THE GULF OF AK TO MT/ND.

AT LWR LVLS...COLD FRONT NOW EXTENDING FROM SRN NEW ENGLAND SW TO
CSTL TX SHOULD CONTINUE GENERALLY SE AHEAD PHASING UPR SYSTEMS.
HOWEVER...APPROACH OF UPR TROUGH LIKELY WILL INDUCE WEAK WAVE
DEVELOPMENT ALONG THE BOUNDARY OVER THE LWR TN VLY. THIS WAVE
SHOULD REACH NE TN OR SE KY BY 12Z THURSDAY.

..TX TO THE LWR TN VLY...
AN ANA-TYPE FRONTAL SITUATION HAS EVOLVED FROM SE TX INTO THE LWR MS
VLY AS SHALLOW COLD DOME CONTINUES TO UNDERCUT WRN EXTENSION OF
BROAD WRN ATLANTIC UPR RIDGE. AN AREA OF WIDELY SCTD ELEVATED TSTMS
FORMED OVERNIGHT IN AREA OF ASCENT DOWNSTREAM FROM SWRN TROUGH OVER
PORTIONS OF CENTRAL/NRN TX. THIS ACTIVITY SHOULD CONTINUE SLOWLY
E/NE INTO NE TX/SE OK AND PERHAPS WRN AR BY LATE TODAY. STORM
ORGANIZATION MAY BECOME MORE LINEAR TONIGHT/EARLY THURSDAY AS DEEP
BAROCLINIC ZONE WITH THE TROUGH ENCOUNTERS WRN EDGE OF ELEVATED
INSTABILITY AXIS/EML NEAR PREVIOUSLY-MENTIONED SFC WAVE. OTHER
SHALLOW CONVECTION MAY DEEPEN SUFFICIENTLY FOR A FEW LIGHTNING
STRIKES NEARER THE MIDDLE TX COAST IN WAKE OF SWD MOVING SURFACE
FRONT.

.EVANS/CORFIDI.. 12/12/2007

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KCYS [121553]: Preliminary Local Storm Report

NWUS55 KCYS 121553
LSRCYS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHEYENNE WY
853 AM MST WED DEC 12 2007

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

0852 AM NON-TSTM WND GST ARLINGTON 41.59N 106.21W
12/12/2007 M49 MPH CARBON WY DEPT OF HIGHWAYS

0852 AM NON-TSTM WND GST BORDEAUX 41.95N 104.95W
12/12/2007 M58 MPH PLATTE WY DEPT OF HIGHWAYS

&&

$$

BCHAPMAN

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KPQR [121514]: Preliminary Local Storm Report

NWUS56 KPQR 121514
LSRPQR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PORTLAND OR
713 AM PST WED DEC 12 2007

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

0100 PM HEAVY RAIN 6 W CLATSKANIE 46.10N 123.33W
12/11/2007 E0.00 INCH COLUMBIA OR EMERGENCY MNGR

A DEBRIS FLOW, 10 FEET DEEP AND 900 YARDS LONG,
APPROXIMATELY 40,000 CUBIC YARDS, SWEPT OVER HIGHWAY 30
AT MILEPOST 67 WEST OF CLATSKANIE, OREGON. FOUR
HOMES,SEVERAL AUTOMOBILES, BOATS AND AN RV WERE
DESTROYED.

&&

$$

TW

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KGRR [121504]: Preliminary Local Storm Report

NWUS53 KGRR 121504
LSRGRR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1004 AM EST WED DEC 12 2007

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

1000 PM SNOW BRECKENRIDGE 43.41N 84.48W
12/11/2007 E1.0 INCH GRATIOT MI TRAINED SPOTTER

&&

$$

OSTUNO

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KPSR [121411]: Preliminary Local Storm Report

NWUS55 KPSR 121411
LSRPSR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PHOENIX AZ
711 AM MST WED DEC 12 2007

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

0709 AM DENSE FOG GILBERT 33.33N 111.76W
12/12/2007 MARICOPA AZ TRAINED SPOTTER

LESS THAN 1/4 MILE VISIBILTY AT CHANDLER HEIGHTS AND
HIGLEY.

&&

$$

INIGUEZ

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KDMX [121334]: Preliminary Local Storm Report

NWUS53 KDMX 121334
LSRDMX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
734 AM CST WED DEC 12 2007

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

1000 AM FREEZING RAIN GARWIN 42.09N 92.68W
12/11/2007 M0.25 INCH TAMA IA CO-OP OBSERVER

1.4 INCHES OF SNOW AS WELL

&&
DELAYED REPORT FROM TUESDAY'S WINTER STORM
$$

RDONAVON

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KGRR [121323]: Preliminary Local Storm Report...corrected

NWUS53 KGRR 121323
LSRGRR

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
823 AM EST WED DEC 12 2007

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

1117 AM SLEET CHARLOTTE 42.56N 84.83W
12/11/2007 E0.10 INCH EATON MI COUNTY OFFICIAL

SLEET MIXED WITH RAIN COUNTY WIDE.

1117 AM SLEET HASTINGS 42.65N 85.29W
12/11/2007 E0.25 INCH BARRY MI COUNTY OFFICIAL

SNOW MIXED WITH SLEET COUNTY WIDE.

1117 AM SLEET ALLEGAN 42.53N 85.85W
12/11/2007 E0.10 INCH ALLEGAN MI COUNTY OFFICIAL

SNOW MIXED WITH SLEET. COUNTY WIDE.

0330 PM FREEZING RAIN 1 N HOLLAND 42.79N 86.10W
12/11/2007 E0.10 INCH OTTAWA MI TRAINED SPOTTER

ALSO 1 INCH OF SNOW AND 0.1 INCHES OF SLEET/ICE PELLETS.
TOTAL PRECIPITATION 0.41 INCHES.

0529 PM SNOW BIG RAPIDS 43.70N 85.49W
12/11/2007 E6.0 INCH MECOSTA MI TRAINED SPOTTER

0533 PM SNOW MOUNT PLEASANT 43.61N 84.75W
12/11/2007 M5.0 INCH ISABELLA MI TRAINED SPOTTER

0533 PM SNOW 2 SW SHELBY 43.58N 86.40W
12/11/2007 M5.5 INCH OCEANA MI TRAINED SPOTTER

0653 PM SNOW 9 E WHITE CLOUD 43.55N 85.59W
12/11/2007 M6.0 INCH NEWAYGO MI TRAINED SPOTTER

0700 PM SNOW LUDINGTON 43.96N 86.44W
12/11/2007 E2.0 INCH MASON MI PUBLIC

0700 PM SNOW TALLMAN 43.98N 86.12W
12/11/2007 E5.0 INCH MASON MI BROADCAST MEDIA

STORM TOTAL

0700 PM SNOW RODNEY 43.67N 85.32W
12/11/2007 E5.0 INCH MECOSTA MI BROADCAST MEDIA

STORM TOTAL

0700 PM SNOW LAKE 43.85N 85.01W
12/11/2007 E6.0 INCH CLARE MI BROADCAST MEDIA

STORM TOTAL

0700 PM SNOW PARIS 43.77N 85.50W
12/11/2007 E6.0 INCH MECOSTA MI BROADCAST MEDIA

STORM TOTAL

0700 PM SNOW BARRYTON 43.75N 85.14W
12/11/2007 E8.0 INCH MECOSTA MI PUBLIC

STORM TOTAL

0700 PM SNOW MUSKEGON 43.23N 86.26W
12/11/2007 M0.5 INCH MUSKEGON MI OFFICIAL NWS OBS

4 INCH SNOW DEPTH

0700 PM SNOW LANSING 42.71N 84.55W
12/11/2007 E0.0 INCH INGHAM MI OFFICIAL NWS OBS

1 INCH SNOW DEPTH

0700 PM SNOW GRAND RAPIDS 42.96N 85.66W
12/11/2007 M0.5 INCH KENT MI OFFICIAL NWS OBS

1 INCH SNOW DEPTH

1016 PM SNOW PENTWATER 43.78N 86.43W
12/11/2007 E3.0 INCH OCEANA MI LAW ENFORCEMENT

1016 PM SNOW BALDWIN 43.90N 85.85W
12/11/2007 E4.0 INCH LAKE MI LAW ENFORCEMENT

1016 PM SNOW LE ROY 44.04N 85.45W
12/11/2007 E6.0 INCH OSCEOLA MI LAW ENFORCEMENT

1016 PM SNOW ITHACA 43.29N 84.60W
12/11/2007 E0.1 INCH GRATIOT MI LAW ENFORCEMENT

MIXTURE OF PRECIPITATION IN ITHACA. SNOW OCCURRED MAINLY
AT END OF THE EVENT AND WAS A DUSTING.

&&

$$

OSTUNO

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KGRR [121312]: Preliminary Local Storm Report

NWUS53 KGRR 121312
LSRGRR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
812 AM EST WED DEC 12 2007

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

0700 PM SNOW BARRYTON 43.75N 85.14W
12/11/2007 E8.0 INCH MECOSTA MI PUBLIC

STORM TOTAL

&&

$$

OSTUNO

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 121301
SWODY1
SPC AC 121259

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0659 AM CST WED DEC 12 2007

VALID 121300Z - 131200Z

..NO SVR TSTM AREAS FORECAST...

..SYNOPSIS...
PATTERN WILL BECOME MORE ZONAL THIS PERIOD AS SW U.S. TROUGH
PARTIALLY PHASES WITH CNTRL PLNS IMPULSE...YIELDING A POSITIVE TILT
TROUGH THAT PROGRESSES E TO THE MID MS/LWR OH VLYS. FARTHER NW...A
SERIES OF NRN STREAM DISTURBANCES WILL CONTINUE ESE IN FAST FLOW
FROM THE GULF OF AK TO MT/ND.

AT LWR LVLS...COLD FRONT NOW EXTENDING FROM SRN NEW ENGLAND SW TO
CSTL TX SHOULD CONTINUE GENERALLY SE AHEAD PHASING UPR SYSTEMS.
HOWEVER...APPROACH OF UPR TROUGH LIKELY WILL INDUCE WEAK WAVE
DEVELOPMENT ALONG THE BOUNDARY OVER THE LWR TN VLY. THIS WAVE
SHOULD REACH NE TN OR SE KY BY 12Z THURSDAY.

..TX TO THE LWR TN VLY...
AN ANA-TYPE FRONTAL SITUATION HAS EVOLVED FROM SE TX INTO THE LWR MS
VLY AS SHALLOW COLD DOME CONTINUES TO UNDERCUT WRN EXTENSION OF
BROAD WRN ATLANTIC UPR RIDGE. BAND OF TSTMS IN ERN AR/NRN
MS...ASSOCIATED WITH LEAD IMPULSE OF PHASING UPR TROUGHS...SHOULD
CONTINUE TO WEAKEN THIS MORNING AS DISTURBANCE IS FURTHER ABSORBED
IN CONFLUENT WSW FLOW OVER THE MIDWEST. FARTHER W...AN AREA OF
WIDELY SCTD ELEVATED TSTMS FORMED OVERNIGHT IN AREA OF ASCENT
DOWNSTREAM FROM SWRN TROUGH. THIS ACTIVITY SHOULD CONTINUE SLOWLY
E/NE INTO NE TX/SE OK AND PERHAPS WRN AR BY LATE TODAY. STORM
ORGANIZATION MAY BECOME MORE LINEAR TONIGHT/EARLY THURSDAY AS DEEP
BAROCLINIC ZONE WITH THE TROUGH ENCOUNTERS WRN EDGE OF ELEVATED
INSTABILITY AXIS/EML NEAR PREVIOUSLY-MENTIONED SFC WAVE.

.CORFIDI.. 12/12/2007

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KDMX [121236]: Preliminary Local Storm Report

NWUS53 KDMX 121236
LSRDMX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
635 AM CST WED DEC 12 2007

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

0800 AM FREEZING RAIN AMES 42.02N 93.63W
12/11/2007 M0.30 INCH STORY IA NWS EMPLOYEE

0930 AM FREEZING RAIN GRIMES 41.66N 93.79W
12/11/2007 M0.50 INCH POLK IA NWS EMPLOYEE

1200 PM SNOW AMES 42.02N 93.63W
12/11/2007 M1.9 INCH STORY IA NWS EMPLOYEE

&&
DELAYED REPORTS FROM TUESDAY'S WINTER STORM
$$

RDONAVON

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MESO: Mesoscale Discussion 2213

ACUS11 KWNS 121231
SWOMCD
SPC MCD 121230
OKZ000-KSZ000-121630-

MESOSCALE DISCUSSION 2213
NWS STORM PREDICTION CENTER NORMAN OK
0630 AM CST WED DEC 12 2007

AREAS AFFECTED...WRN AND NRN OK

CONCERNING...FREEZING RAIN

VALID 121230Z - 121630Z

A MIXTURE OF FREEZING RAIN AND SLEET WILL BE LIKELY WITH SHOWERS
MOVING NEWD ACROSS WRN AND NRN OK THIS MORNING. PRECIPITATION RATES
COULD REACH A TENTH OF AN INCH PER HOUR WITH THE HEAVIER SHOWERS.

THE LATEST WATER VAPOR IMAGERY SHOWS AN UPPER-LEVEL LOW OVER SE AZ
WITH SOUTHWEST FLOW IN PLACE ACROSS THE SRN PLAINS. A PLUME OF
MID-LEVEL MOISTURE EXTENDS NNEWD ACROSS WCNTRL TX INTO SRN OK
ASSOCIATED WITH A BAND OF STRONG FLOW IN THE 700 TO 500 MB LAYER.
THIS IS LIKELY WHERE WARM ADVECTION IS OCCURRING WHICH COMBINED WITH
STEEP MID-LEVEL LAPSE RATES SHOULD CONTINUE TO SUPPORT
CONVECTIVE-TYPE SHOWERS ACROSS WRN AND NRN OK THIS MORNING. FREEZING
RAIN AND SLEET WILL BE LIKELY WITH AREAS IN THE PATH OF THE HEAVIER
SHOWERS RECEIVING PRECIPITATION RATES UP TO A TENTH OF AN INCH PER
HOUR. THE FREEZING LINE SHOULD GRADUALLY MOVE NWWD THIS MORNING
ALLOWING FOR A CHANGEOVER TO RAIN IN THE SERN FRINGE OF THE MD AREA.

.BROYLES.. 12/12/2007

..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...TSA...ICT...OUN...

35439764 35009846 34619956 34769999 35399994 36269843
36949753 37049699 36969664 36719645 36399650 36009683

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DAY48SVR: Nws Storm Prediction Center Norman Ok

ACUS48 KWNS 120957
SWOD48
SPC AC 120957

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0357 AM CST WED DEC 12 2007

VALID 151200Z - 201200Z

..DISCUSSION...

GFS HAS CONVERGED TO ECMWF WITH UPPER PATTERN EVOLUTION THROUGH DAY
4. ECMWF HAS DEMONSTRATED RUN TO RUN CONSISTENCY DURING THE LAST 24
HOURS. UPPER TROUGH FORECAST TO AMPLIFY AND MOVE INTO THE SRN PLAINS
FRIDAY (DAY 3) SHOULD CONTINUE RAPIDLY ENEWD THROUGH THE TN AND OH
VALLEYS SATURDAY...REACHING THE EAST COAST SATURDAY NIGHT.
HOWEVER...MODELS DO EXHIBIT DIFFERENCES WITH SURFACE PATTERN
EVOLUTION. IN EITHER CASE...THE FAST SYSTEM MOVEMENT SUGGESTS
MOISTURE RETURN INLAND MAY BE SOMEWHAT LIMITED AND CONFINED TO AREAS
NEAR THE GULF COAST AND FL WHERE SOME THREAT FOR SEVERE WEATHER MAY
EXIST. CONCERNS REGARDING DEGREE OF DESTABILIZATION ALONG WITH
POTENTIAL FOR INITIAL SURFACE LOW AND STRONGER LOW LEVEL WIND FIELDS
TO SHIFT NEWD AWAY FROM WARM SECTOR LOWERS OVERALL CONFIDENCE IN A
MORE SUBSTANTIAL SEVERE THREAT. THEREFORE...A CATEGORICAL RISK AREA
WILL NOT BE INTRODUCED AT THIS TIME. BEYOND DAY 4 HIGH PRESSURE
BUILDS INTO THE ERN TWO THIRDS OF THE NATION WITH OFFSHORE FLOW
EXPECTED OVER MOST OF THE GULF UNTIL ABOUT DAY 8.

.DIAL.. 12/12/2007

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