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FXUS01 KWBC 092001
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
401 PM EDT FRI OCT 09 2009
VALID 00Z SAT OCT 10 2009 - 12Z SUN OCT 11 2009
A FRONT EXTENDING FROM THE NORTHEAST SOUTHWESTWARD TO THE WESTERN
GULF WILL MOVE OFF THE EASTERN SEABOARD BY SATURDAY AFTERNOON. A
WAVE OF LOW PRESSURE OVER THE WESTERN GULF COAST WILL MOVE
NORTHEASTWARD TO THE SOUTHEAST BY SATURDAY NIGHT WHILE THE
TRAILING FRONT LINGERS OVER THE THE GULF COAST AND THE SOUTHEAST.
MOISTURE POOLING ALONG AND AHEAD OF THE BOUNDARY WILL AID IN
PRODUCING MODERATE RAIN AND THUNDERSTORMS OVER THE TENNESSEE ...
OHIO ... AND LOWER MISSISSIPPI VALLEYS ON FRIDAY NIGHT AND WILL
WIND DOWN TO SHOWERS AND THUNDERSTORMS ON SATURDAY FROM THE
MID-ATLANTIC TO THE CENTRAL GULF COAST. RAIN OVER THE NORTHEAST
WILL END BY SATURDAY AFTERNOON. IN ADDITION ... THE SHOWERS AND
THUNDERSTORMS WILL CONTINUE OVER THE SOUTHEAST AND THE COASTAL
PORTIONS OF THE GULF COAST THROUGH SUNDAY. THE STORM PREDICTION
CENTER HAS ISSUED A SLIGHT RISK OF SEVERE WEATHER ASSOCIATED WITH
THE THUNDERSTORMS FROM THE SOUTHERN OHIO VALLEY TO THE INTERIOR
CENTRAL GULF COAST THROUGH SATURDAY MORNING.
AN EXTREMELY STRONG FRONT OVER THE UPPER MIDWEST EXTENDING TO THE
PACIFIC NORTHWEST WILL MOVE SOUTH AND EASTWARD TO THE NORTHEAST
COAST AND LOWER MISSISSIPPI VALLEY/SOUTHERN PLAINS BY SUNDAY.
LIGHT SNOW WILL DEVELOP OVER THE UPPER MIDWEST INTO THE NORTHERN
ROCKIES AND THE CENTRAL HIGH PLAINS FRIDAY NIGHT INTO SATURDAY
MORNING. THE SYSTEM WILL NOT HAVE MUCH MOISTURE TO WORK WITH SO
ONLY SCATTERED LIGHT SNOW SHOWERS WILL DEVELOP OVER PARTS OF THE
UPPER GREAT LAKES THROUGH SUNDAY MORNING AND RAIN SHOWERS OVER
PARTS OF THE LOWER GREAT LAKES AND THE NORTHEAST. HIGH PRESSURE
WILL BUILD IN BEHIND THE FRONT OVER THE UPPER MIDWEST AND THE
ASSOCIATED CLOCKWISE FLOW AROUND THE HIGH WILL AID IN DEVELOPING
UPSLOPE FLOW OVER PARTS OF THE NORTHERN/CENTRAL ROCKIES AND PARTS
OF THE CENTRAL HIGH PLAINS PRODUCING SNOW OVER THOSE REGIONS
THROUGH SUNDAY. A SMALL AREA OF FREEZING RAIN/SLEET WILL DEVELOP
OVER PARTS OF WESTERN KANSAS ON SATURDAY AND SUNDAY MORNING.
TEMPERATURES OVER THE NORTHERN ROCKIES TO THE CENTRAL PLAINS WILL
BE EXTREMELY BELOW AVERAGE THROUGH SUNDAY. WHILE TEMPERATURES
FROM THE GREAT LAKES TO EASTERN TEXAS WILL BE BELOW TO MUCH BELOW
AVERAGE.
ZIEGENFELDER
GRAPHIC AVAILABLE AT WWW.HPC.NCEP.NOAA.GOV
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