Prognostic Meteorological Discussion
Issued by NWS

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000
FXUS01 KWBC 240759
PMDSPD
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF
THE CENTRAL/SOUTHERN PLAINS...

...HEAVY RAIN POSSIBLE OVER PARTS OF THE MIDDLE MISSISSIPPI
VALLEY...

AN UPPER-LEVEL LOW OVER SOUTHERN NEW ENGLAND WILL SLOWLY WEAKEN
AND MOVE EASTWARD OUT OVER THE WESTERN ATLANTIC BY WEDNESDAY
MORNING.  SHOWERS AND THUNDERSTORMS WILL DEVELOP OVER PARTS OF NEW
ENGLAND AND THE MID-ATLANTIC COAST ON TUESDAY MORNING THAT WILL
END OVER NEW ENGLAND BY WEDNESDAY MORNING.  IN ADDITION, A FRONT
OVER SOUTHEASTERN CANADA WILL MOVE EASTWARD INTO PARTS OF THE
NORTHEAST ON WEDNESDAY.  SHOWERS AND THUNDERSTORMS WILL DEVELOP
ALONG THE BOUNDARY OVER PARTS OF NORTHERN NEW ENGLAND ON WEDNESDAY
AFTERNOON INTO EVENING.

MEANWHILE, A DEEP UPPER-LEVEL TROUGH OVER THE WESTERN PORTION OF
THE COUNTRY WILL BE QUASI-STATIONARY THROUGH THURSDAY.  THE SYSTEM
WILL HAVE A STRONG DAYTIME HEATING COMPONENT TO THE AREA OF
SHOWERS AND THUNDERSTORMS THAT WILL DEVELOP UNDER THE TROUGH.
SHOWERS AND THUNDERSTORMS WILL DEVELOP OVER PARTS OF THE PACIFIC
NORTHWEST TO CALIFORNIA EASTWARD TO THE NORTHERN/CENTRAL ROCKIES
THROUGH WEDNESDAY EVENING.  DOWNSTREAM FROM THE UPPER-LEVEL TROUGH
MOISTURE FROM THE WESTERN GULF OF MEXICO WILL MOVE NORTHWARD OVER
THE SOUTHERN/CENTRAL PLAINS INTO THE UPPER GREAT LAKES/MIDDLE
MISSISSIPPI VALLEY THAT WILL SWING INTO PARTS OF THE GREAT
LAKES/OHIO VALLEY BY WEDNESDAY.  SHOWERS AND THUNDERSTORMS WILL
DEVELOP OVER THE SOUTHERN/CENTRAL PLAINS NORTHEASTWARD TO THE
UPPER MISSISSIPPI VALLEY/UPPER GREAT LAKES ON TUESDAY THAT WILL
MOVE INTO PARTS OF THE OHIO VALLEY/GREAT LAKES ON TUESDAY EVENING
INTO WEDNESDAY EVENING.  ADDITIONALLY, SHOWERS AND THUNDERSTORMS
WILL DEVELOP OVER PARTS OF THE CENTRAL/NORTHERN PLAINS ON TUESDAY
EVENING THROUGH WENDESDAY EVENING.


ZIEGENFELDER


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