Prognostic Meteorological Discussion
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000
FXUS01 KWBC 200740
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
339 AM EDT WED AUG 20 2014

VALID 12Z WED AUG 20 2014 - 12Z FRI AUG 22 2014

...SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF THE NORTHERN
PLAINS...

...HEAVY RAIN POSSIBLE OVER PARTS OF LOWER PENINSULA OF MICHIGAN
AND PARTS OF THE CENTRAL APPALACHIANS...

WEAKENING UPPER-LEVEL LOW OVER THE GREAT LAKES WILL MOVE SLOWLY
EASTWARD TO THE NORTHERN APPALACHIANS BY THURSDAY EVENING.
SHOWERS AND THUNDERSTORMS WILL DEVELOP ALONG AND AHEAD OF THE
ASSOCIATED FRONT FROM THE GREAT LAKES TO THE OHIO VALLEY/MIDDLE
MISSISSIPPI VALLEY MOVING TO THE MID-ATLANTIC COAST WHILE
EXTENDING NORTHWESTWARD TO THE UPPER GREAT LAKES BY THURSDAY.

MEANWHILE, DISORGANIZED UPPER-LEVEL ENERGY EMBEDDED IN UPPER-LEVEL
TROUGH OVER THE NORTHERN ROCKIES WILL AID IN PRODUCING SHOWERS AND
THUNDERSTORMS OVER PARTS OF THE NORTHERN/CENTRAL PLAINS INTO THE
NORTHERN HIGH PLAINS AND PARTS OF THE NORTHERN/CENTRAL
ROCKIES/GREAT BASIN ON WEDNESDAY INTO THURSDAY.


ZIEGENFELDER


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