065
FXUS01 KWBC 090709
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
308 AM EDT FRI OCT 09 2009
VALID 12Z FRI OCT 09 2009 - 00Z SUN OCT 11 2009
THE SOUTHERN GREAT PLAINS NORTHEASTWARD THROUGH THE MIDDLE
MISSISSIPPI AND OHIO VALLEYS WILL CONTINUE TO BE INUNDATED WITH
PRECIPITATION OVER THE NEXT COUPLE OF DAYS. RAIN TOTALS IN EXCESS
OF 4.0 INCHES HAVE ALREADY BEEN REPORTED IN OKLAHOMA...MISSOURI
AND ILLINOIS...WITH NO IMMEDIATE RELIEF FROM THE DOWNPOUR IN
SIGHT. A STRONG...SLOW MOVING FRONTAL SYSTEM IS PROVIDING A
LIFTING MECHANISM FOR THE AMPLE MOISTURE FROM THE GULF...RESULTING
IN A BROAD SWATH OF PRECIPITATION THAT IS MOVING NORTHEASTWARD
OVER THE SAME GEOGRAPHIC LOCATIONS. AS THE FRONT SLOWLY TRACKS
EASTWARD ON FRIDAY...RAINFALL TOTALS ARE EXPECTED TO CONTINUE TO
CLIMB OVER PARTS OF THE MIDDLE AND SOUTHERN MISSISSIPPI VALLEYS
AND THE OHIO AND TENNESSEE VALLEYS. TEMPERATURES WILL DROP
SHARPLY...BY AS MUCH AS 30 DEGREES...AS THE FRONT PASSES THROUGH.
SNOW IS FALLING OVER THE ROCKIES IN MONTANA AND NORTHERN WYOMING
THIS MORNING ALONG A COLD FRONT MOVING INTO THE U.S. FROM THE
NORTH. THIS BLAST OF COLD ARCTIC AIR WILL QUICKLY MOVE INTO THE
CENTRAL AND NORTHERN PLAINS AS FRIDAY PROGRESSES...DRIVEN BY A
VERY STRONG AREA OF HIGH PRESSURE PUSHING SOUTH SOUTHEASTWARD FROM
THE ARCTIC. A BAND OF UPSLOPE SNOW WILL FOLLOW JUST BEHIND THIS
FRONT...DROPPING THE HEAVIEST AMOUNTS OF SNOW OVER EASTERN MONTANA
AND WYOMING. LOWS IN THE SINGLE DIGITS WILL BE POSSIBLE IN THIS
AREA OVER THE WEEKEND. THE SNOW WILL CONTINUE TO FOLLOW THE FRONT
AS IT ENTERS THE NORTH CENTRAL U.S. EARLY SATURDAY.
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