Prognostic Meteorological Discussion
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FXUS01 KWBC 230742
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
341 AM EDT WED JUL 23 2014

VALID 12Z WED JUL 23 2014 - 12Z FRI JUL 25 2014

...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF
THE NORTHERN APPALACHIANS...

...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF
THE NORTHERN HIGH PLAINS...

A SLOW MOVING FRONT EXTENDING FROM THE LOWER GREAT LAKES TO THE
CENTRAL PLAINS WILL MOVE JUST OFF THE NORTHEAST AND THE
MID-ATLANTIC COAST BY THURSDAY EVENING WHILE MOVING SOUTHWARD TO
THE SOUTHEAST AND THE INTERIOR CENTRAL GULF COAST THEN TRAILING
NORTHWESTWARD TO THE NORTHERN PLAINS BY THURSDAY EVENING TOO.
SHOWERS AND THUNDERSTORMS WILL DEVELOP ALONG AND AHEAD OF THE
BOUNDARY FROM THE LOWER GREAT LAKES TO PARTS OF THE MIDDLE
MISSISSIPPI VALLEY THAT WILL MOVE EASTWARD TO NEW ENGLAND TO THE
TENNESSEE VALLEY BY WEDNESDAY EVENING.  THE SHOWERS AND
THUNDERSTORMS WILL MOVE OFF MOST OF THE NORTHEAST/NORTHERN
MID-ATLANTIC COAST AND INTO PARTS OF THE SOUTHERN MID-ATLANTIC AND
THE SOUTHEAST BY THURSDAY EVENING.

AN UPPER-LEVEL LOW WILL LINGER OVER THE LOWER MISSISSIPPI VALLEY
AND THE CENTRAL GULF COAST THROUGH THURSDAY.  THE ENERGY WILL
PRODUCE SHOWERS AND THUNDERSTORMS OVER PARTS OF THE GULF COAST AND
THE SOUTHEAST ON WEDNESDAY AND THURSDAY.  IN ADDITION, A PLUME OF
MOISTURE WILL BE CONCENTRATING JUST EAST OF THE ROCKIES OVER THE
PLAINS THAT WILL AID IN TRIGGERING SHOWERS AND THUNDERSTORMS OVER
PARTS OF THE NORTHERN PLAINS ON WEDNESDAY MOVING TO THE UPPER
MISSISSIPPI VALLEY BY THURSDAY EVENING.

MEANWHILE, AN UPPER-LEVEL LOW WILL MOVE ONSHORE OVER THE PACIFIC
NORTHWEST AND MOVE EASTWARD TO THE NORTHERN ROCKIES BY THURSDAY.
THE ENERGY WILL PRODUCE SHOWERS AND THUNDERSTORMS OVER PARTS OF
THE PACIFIC NORTHWEST TO THE NORTHERN ROCKIES ON WEDNESDAY.  THE
SHOWERS AND THUNDERSTORMS WILL MOVE TO THE NORTHERN HIGH PLAINS BY
THURSDAY EVENING.  AREAS OF LIGHT RAIN WILL ALSO DEVELOP OVER
PARTS OF THE PACIFIC NORTHWEST COAST WEDNESDAY INTO THURSDAY.
ELSEWHERE, WEAK MONSOONAL MOISTURE WILL AID IN TRIGGERING SHOWERS
AND THUNDERSTORMS OVER PORTIONS OF THE SOUTHERN/CENTRAL ROCKIES
DURING THE LATE AFTERNOON AND EVENING ON WEDNESDAY AND THURSDAY
TOO.


ZIEGENFELDER


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