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FXUS01 KWBC 090845
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
445 AM EDT TUE SEP 09 2008
VALID 12Z TUE SEP 09 2008 - 00Z THU SEP 11 2008
AS HURRICANE IKE MOVES TOWARD THE WEST NORTHWEST FROM WESTERN
CUBA... OUTER RAIN BANDS WITH TROPICAL STORM CONDITIONS WILL
CONTINUE TO IMPACT SOUTHERN FLORIDA THROUGH THE DAY TODAY AND INTO
TONIGHT. BY WEDNESDAY... CONDITIONS SHOULD IMPROVE ALTHOUGH THE
THREAT FOR HEAVY RAIN WILL STILL EXIST.
A STRONG UPPER LEVEL TROUGH... CURRENTLY OVER THE GREAT LAKES
REGION... WILL LIFT NORTHEASTWARD TODAY INTO SOUTHEASTERN CANADA.
AT THE SURFACE... A COLD FRONT EXTENDING SOUTHWEST FROM THE OHIO
VALLEY WILL PUSH EAST... BRINGING SHOWERS AND THUNDERSTORMS WITH
IT INTO THE MID ATLANTIC REGION AND NORTHEAST THIS AFTERNOON AND
EVENING. THE COLD FRONT IS EXPECTED TO MOVE OUT INTO THE ATLANTIC
TONIGHT FROM VIRGINIA... NORTHWARD... AND STALL SOUTH OF THERE
FROM THE OUTER BANKS INTO THE SOUTHERN PLAINS.
WITH A MODERATE FETCH OF MOISTURE BEING BROUGHT INTO THE SOUTHEAST
OFF THE ATLANTIC... DUE TO A STRONG PRESSURE GRADIENT BETWEEN
HURRICANE IKE AND HIGH PRESSURE OVER THE ATLANTIC... WET WEATHER
IS LIKELY ACROSS THE SOUTHEAST BEGINNING TONIGHT AND LASTING INTO
WEDNESDAY. SHOWERS AND THUNDERSTORMS SHOULD FOCUS ON AND AROUND
THE STALLED FRONTAL BOUNDARY. FARTHER NORTH... HIGH PRESSURE WILL
BUILD INTO THE OHIO VALLEY AND NORTHEAST... ALLOWING FOR
UNSEASONABLY COOL TEMPERATURES ON WEDNESDAY AND THURSDAY.
LOOKING WEST... FLOW OFF THE GULF OF MEXICO INTO TEXAS ALONG WITH
MOISTURE BRING BROUGHT INTO MEXICO AND TEXAS FROM THE EASTERN
PACIFIC SHOULD BRING ATMOSPHERIC MOISTURE TO ANOMALOUSLY HIGH
LEVELS THIS WEEK. ENERGY ALOFT IS EXPECTED TO TRAVEL VIA
SOUTHWESTERLY FLOW INTO THE REGION WHICH SHOULD KEEP MUCH OF THE
LONE STAR STATE AND MEXICO VERY WET INTO THURSDAY.
THE NORTHWEST SHOULD SEE A COLD FRONT EMERGE FROM CANADA DURING
THE DAY TODAY... FOLLOWED BY SHOWERS AND THUNDERSTORMS TONIGHT
INTO WEDNESDAY AS THE FRONT MOVES THROUGH THE WEST. UPSLOPE FLOW
INTO THE HIGHER TERRAIN OF WESTERN WYOMING AND NORTHEASTERN UTAH
SHOULD FOCUS THE HEAVIEST RAINFALL TOTALS ON WEDNESDAY ACROSS
THESE AREAS. SCATTERED CONVECTION WILL DEVELOP ELSEWHERE AROUND
THE INTERMOUNTAIN WEST AS WELL AS THE NORTHERN PLAINS WEDNESDAY
AFTERNOON INTO THE OVERNIGHT HOURS.
OTTO
GRAPHICS AVAILABLE AT WWW.HPC.NCEP.NOAA.GOV
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