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FXUS01 KWBC 250901
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
500 AM EDT SUN OCT 25 2009
VALID 12Z SUN OCT 25 2009 - 00Z TUE OCT 27 2009
A LOW PRESSURE SYSTEM CURRENTLY LOCATED IN MINNESOTA IS BRINGING
AN AREA OF RAIN FROM THE UPPER MIDWEST INTO THE NORTHERN PLAINS.
THIS LOW PRESSURE SYSTEM IS NOT WELL-SUPPORTED BY THE UPPER-LEVEL
TROUGH AS THE CORE OF THE COLD AIR REMAINS WELL OFF TO THE WEST IN
THE NORTHERN ROCKIES. AS SUCH...THE LOW IS FORECAST TO SLOWLY
WEAKEN WHILE THE CORE OF THE COLD AIR BEGINS TO PLUNGE SOUTHWARD
THROUGH THE ROCKIES. AS THE COLD AIR PLUNGES
SOUTHWARD...PRECIPITATION WILL DEVELOP FROM NORTH TO SOUTH ALONG
THE SPINE OF...AND ON THE EAST SLOPES OF THE ROCKIES THROUGH THE
WEEKEND. PRECIPITATION SHOULD BE IN THE FORM OF SNOW IN THE HIGHER
ELEVATIONS OF COLORADO AND NORTHERN NEW MEXICO. FARTHER SOUTH AND
EAST...PRECIPITATION WILL BE IN THE FORM OF SHOWERS AND
THUNDERSTORMS ALONG AND AHEAD OF A COLD FRONT FROM THE SOUTHERN
PLAINS NORTHEASTWARD INTO THE MIDWEST. SOME OF SHOWERS AND
THUNDERSTORMS COULD BE QUITE HEAVY.
A COLD FRONT AND ITS ASSOCIATED PRECIPITATION HAS MOVED OFF THE
EAST COAST. THIS FRONT IS FORECAST TO BECOME STATIONARY OFF THE
SOUTHEAST COAST. HOWEVER...PRECIPITATION IS FORECAST TO REMAIN
OFFSHORE THROUGH THE WEEKEND. SHOWERS AND THUNDERSTORMS COULD
RETURN TO THE SOUTHEAST COAST ON MONDAY AS THE WAVE OF LOW
PRESSURE DEVELOPS JUST OFF THE COAST.
A VIGOROUS STORM IS FORECAST TO COME ONSHORE OVER THE PACIFIC
NORTHWEST ON SUNDAY AFTERNOON ... TRIGGERING LIGHT TO MODERATE
RAIN ALONG THE COAST AND HIGH ELEVATION SNOW OVER THE PACIFIC
NORTHWEST DURING THE WEEKEND. THE PRECIPITATION SHOULD SPREAD
INLAND TO THE NORTHERN INTERMOUNTAIN REGION BY MONDAY.
KONG
GRAPHIC AVAILABLE AT WWW.HPC.NCEP.NOAA.GOV
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