THE HYDROMETEOROLOGICAL PREDICTION CENTER

CAMP SPRINGS, MD


STORM SUMMARY MESSAGE



STORM SUMMARY NUMBER 02 FOR CHRISTMAS 2009 WINTER STORM
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD 
300 PM CST WED DEC 23 2009
 
...DANGEROUS WINTER STORM WILL AFFECT MUCH OF THE CENTRAL AND
PARTS OF THE EASTERN U.S. THROUGH CHRISTMAS WITH HEAVY SNOW AND
HEAVY RAIN. THE MAGNITUDE OF THE SYSTEM AND SLOW MOVEMENT WILL
SEVERELY IMPACT HOLIDAY GROUND AND AIR TRAVEL...
 
WINTER STORM WARNINGS ARE IN EFFECT FOR MUCH OF THE CENTRAL AND
NORTHERN PLAINS INTO THE UPPER MIDWEST...AND WINTER WEATHER
ADVISORIES SURROUND THIS AREA...EXTENDING WESTWARD TO THE ROCKY
MOUNTAINS AND EASTWARD TO LAKE MICHIGAN. 

FLOOD AND FLASH FLOOD WATCHES ARE IN EFFECT FOR PARTS OF THE
MIDDLE AND LOWER MISSISSIPPI VALLEY STATES.
 
FOR A DETAILED GRAPHICAL DEPICTION OF THE LATEST
WATCHES...WARNINGS AND ADVISORIES...PLEASE SEE WWW.WEATHER.GOV

AT 300 PM CST...A 1006 MB LOW PRESSURE CENTER WAS IN EXTREME
SOUTHEAST KANSAS WITH A COLD FRONT EXTENDING INTO WESTERN TEXAS. A
STATIONARY FRONTAL BOUNDARY EXTENDED FROM THE LOW INTO THE LOWER
OHIO VALLEY. NATIONAL WEATHER SERVICE DOPPLER RADARS AND SURFACE
OBSERVATIONS SHOWED A LARGE...AND EXPANDING AREA OF PRECIPITATION
OVER THE CENTRAL U.S. SNOW WAS FALLING FROM THE FRONT RANGE OF THE
ROCKIES EASTWARD INTO THE CENTRAL PLAINS AND UPPER MIDWEST...WITH
SOME FREEZING RAIN AND SLEET MIXED IN WITH THE SNOW OVER THE
CENTRAL PLAINS JUST SOUTH OF THE MAIN SNOWFALL AREA. HEAVY RAIN
WAS FALLING FROM MISSOURI SOUTHWARD INTO EASTERN TEXAS AND THE
LOWER MISSISSIPPI RIVER VALLEY.

...SELECTED STORM TOTAL SNOWFALL IN INCHES FROM 900 PM CST TUE DEC
22 THROUGH 300 PM CST WED DEC 23...

...COLORADO...
FORT COLLINS 1 SE                     6.0                     
NORTH BRUSH                           6.0                     
PARADOX 2N                            6.0                     
GREELEY 2.6W                          5.5                     
HUGO 1 NW                             5.0                     
BUCKEYE 4.7NNE                        4.1                     
ESTES PARK 2.2S                       4.0                     
HASWELL                               4.0                     
NORTH LONGMONT                        3.2                     
COLORADO SPRINGS 5 ESE                2.0                     

...KANSAS...
GOVE                                  8.0                     
GRAINFIELD                            6.0                     
PALCO                                 6.0                     
QUINTER                               6.0                     
WINONA                                5.0                     
ELLIS 11NNE                           2.8                     
HAYS 5.4SSW                           2.4                     
CATHERINE                             2.0                     

...NEBRASKA...
ALMA                                  5.0                     
FRANKLIN                              4.0                     
HOLDREGE                              4.0                     
WILSONVILLE                           4.0                     
GRAND ISLAND                          2.0                     

...WYOMING...
CHEYENNE                              3.0                     

...SELECTED STORM TOTAL RAINFALL IN INCHES FROM 900 PM CST TUE DEC
22 THROUGH 300 PM CST WED DEC 23...

...ARKANSAS...
PINE BLUFF                            2.27                     
MONTICELLO                            1.55                     
LITTLE ROCK                           1.37                     
EL DORADO                             1.04                     
SHERWOOD 1.8NNW                       1.04                     

...MISSOURI...
ST CHARLES                            0.94                     

...MISSISSIPPI...
GREENVILLE                            1.52                     

...TEXAS...
BULLARD 3.7E                          1.32                     
LONGVIEW/GREGG CO. ARPT               1.09                     

...SELECTED STORM TOTAL FREEZING RAIN ICE AMOUNTS IN INCHES FROM
900 PM CST TUE DEC 22 THROUGH 300 PM CST WED DEC 23...

...IOWA...
DAYTON 1 W                            0.25                     
IOWA CITY 5 NW                        0.20                     
NEWTON                                0.15                     

...ILLINOIS...
CAMP GROVE                            0.10                     
ELMIRA 2 NW                           0.10                     

...KANSAS...
OBERLIN                               0.25                     
BURR OAK                              0.24                     

...NEBRASKA...
BRUNING                               0.25                     


THE SURFACE LOW WILL SLOWLY INTENSIFY TODAY AND MOVE INTO MISSOURI
CHRISTMAS EVE. THE LOW WILL THEN BEGIN RAPID INTENSIFICATION
THROUGH CHRISTMAS DAY AND MOVE INTO IOWA. HEAVY SNOW WILL EXPAND
THROUGH THE CENTRAL AND UPPER MIDWEST STATES WITH A TREMENDOUS
AMOUNT OF BLOWING AND DRIFTING SNOW AND POSSIBLY LIFE THREATENING
BLIZZARD CONDITIONS. A LARGE AREA OF 6 TO 12 INCH SNOWS ARE LIKELY
WITH LOCALIZED 1 TO 2 FOOT AMOUNTS POSSIBLE OVER NORTHERN IOWA
INTO SOUTHERN MINNESOTA. THE ASSOCIATED COLD FRONT WILL PUSH
ACROSS THE LOWER OHIO VALLEY AND INTO THE GULF COAST STATES WITH A
GOOD CHANCE FOR HEAVY RAINFALL AND SEVERE THUNDERSTORMS THROUGH
CHRISTMAS DAY. RAINFALL AMOUNTS OF 1 TO 4 INCHES ARE LIKELY AND
THIS MAY CAUSE SOME FLOODING ISSUES.

THE NEXT STORM SUMMARY WILL BE ISSUED BY THE HYDROMETEOROLOGICAL
PREDICTION CENTER AT 900 PM CST. PLEASE REFER TO YOUR LOCAL
NATIONAL WEATHER SERVICE OFFICE FOR ADDITIONAL INFORMATION ON THIS
EVENT.

HAMRICK
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Last Updated: 345 PM EST WED DEC 23 2009