Prognostic Meteorological Discussion
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FXUS01 KWBC 020713
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
313 AM EDT WED SEP 02 2015

VALID 12Z WED SEP 02 2015 - 12Z FRI SEP 04 2015

...TEMPERATURES WILL BE 15 TO 20 DEGREES ABOVE AVERAGE OVER PARTS
OF THE NORTHERN/CENTRAL PLAINS...

A FRONT EXTENDING FROM THE NORTHERN ROCKIES TO PARTS OF THE GREAT
BASIN WILL MOVE EASTWARD TO THE NORTHERN PLAINS THEN EXTEND
ROUGHLY SOUTHWESTWARD TO PARTS OF THE GREAT BASIN THROUGH THURSDAY
EVENING.  THE BOUNDARY WILL AID IN PRODUCING RAIN OVER PARTS OF
THE NORTHERN ROCKIES ON WEDNESDAY EVENING EXPANDING INTO PARTS OF
THE NORTHERN HIGH PLAINS BY THURSDAY.  ADDITIONALLY, ONSHORE FLOW
FROM THE PACIFIC WILL AID IN PRODUCING RAIN OVER PARTS OF THE
PACIFIC NORTHWEST THROUGH THURSDAY.

A SECOND FRONT OVER EASTERN CANADA WILL MOVE SOUTHWARD INTO THE
GREAT LAKES/NORTHEAST ON THURSDAY MORNING THAT WILL CONTINUE TO
MOVE SOUTHWARD TO THE NORTHERN MID-ATLANTIC TO PARTS OF THE OHIO
VALLEY/GREAT LAKES BY THURSDAY EVENING.  RAIN WILL DEVELOP ALONG
PARTS OF THE FRONT FROM THE GREAT LAKES TO PARTS OF THE NORTHEAST
ON THURSDAY.

MEANWHILE, HIGH MOISTURE CONTENT AIR OVER THE GULF COAST AND
UPPER-LEVEL IMPULSES WILL TRIGGER SHOWERS AND THUNDERSTORMS FROM
PARTS OF THE WESTERN GULF COAST EASTWARD TO PARTS OF THE SOUTHEAST
THROUGH THURSDAY EVENING.  IN ADDITION, UPPER-LEVEL ENERGY OVER
THE OHIO VALLEY WILL MOVE EASTWARD TO OFF THE SOUTHERN
MID-ATLANTIC COAST BY THURSDAY.  THE ENERGY WILL AID IN PRODUCING
SHOWERS AND THUNDERSTORMS OVER PARTS OF THE SOUTHERN
MID-ATLANTIC/CENTRAL APPALACHIANS ON WEDNESDAY EVENING.

ELSEWHERE, MONSOONAL MOISTURE AND DAYTIME HEATING WILL AID IN
DEVELOPING SHOWERS AND THUNDERSTORMS OVER PARTS OF THE
SOUTHERN/CENTRAL ROCKIES AND PARTS OF THE GREAT BASIN/SOUTHWEST ON
WEDNESDAY AND THURSDAY AFTERNOON INTO LATE EVENING.


ZIEGENFELDER


GRAPHICS AVAILABLE AT WWW.WPC.NCEP.NOAA.GOV
$$





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