054
FXUS01 KWBC 180738
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
338 AM EDT SUN OCT 18 2009
VALID 12Z SUN OCT 18 2009 - 00Z TUE OCT 20 2009
LOW PRESSURE OFF OF THE MID ATLANTIC COAST WILL SLOWLY TRACK OFF
TO THE NORTHEAST WHILE HIGH PRESSURE AND DRIER CONDITIONS BUILDS
ACROSS THE EASTERN U.S. THIS PERIOD...BUT NOT BEFORE YET ANOTHER
DAY OF UNSEASONABLY COLD TEMPERATURES ACROSS THE MID ATLANTIC AND
SOUTHEAST WITH WET CONDITIONS ACROSS THE NORTHERN MID ATLANTIC AND
NORTHEAST STATES IS EXPECTED. IN THE FACE OF CHILLY
NORTHEASTERLY WINDS...MODERATE TO LOCALLY HEAVY RAINS CAN BE
EXPECTED TODAY ALONG PORTIONS OF THE NORTHERN MID ATLANTIC AND
NORTHEASTERN SEABOARDS TODAY...WITH SOME WET SNOWS POSSIBLE
FURTHER INLAND OVER THE HIGHER TERRAINS...AS AN AREA OF LOW
PRESSURE DRIFTS SLOWLY NORTHWARD ALONG THE COAST. PRECIPITATION
SHOULD BEGIN TO WANE FIRST ACROSS THE MID ATLANTIC STATES AND THEN
OVER THE NORTHEAST BY MONDAY AS THE LOW PRESSURE CENTER BEGINS TO
MOVE SOUTH OF THE CANADIAN MARITIME PROVINCES AND HIGH PRESSURE
MOVES INTO THE EASTERN U.S....BRINING AN END TO THIS MULTI-DAY
EVENT.
ELSEWHERE....A PAIR OF PACIFIC FRONTAL SYSTEMS WILL IMPACT THE
WESTERN U.S. FROM THE PACIFIC NORTHWEST AND NORTHERN CALIFORNIA TO
THE NORTHERN AND CENTRAL ROCKIES...BRINGING A CHANCE OF
PRECIPITATION TO THESE REGIONS. THE LACK OF DEEP MOISTURE WITH
THESE SYSTEMS SHOULD PLAY A LIMITING ROLE...PREVENTING ANY
WIDESPREAD ORGANIZED HEAVY ACTIVITY.
PEREIRA
GRAPHIC AVAILABLE AT WWW.HPC.NCEP.NOAA.GOV
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