Prognostic Meteorological Discussion
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000
FXUS01 KWBC 221943
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
343 PM EDT TUE JUL 22 2014

VALID 00Z WED JUL 23 2014 - 00Z FRI JUL 25 2014

...SHOWERS AND THUNDERSTORMS MOVE FROM THE UPPER GREAT LAKES TO
THE OHIO VALLEY AND NORTHEAST...

...RAIN AND THUNDERSTORMS WILL SPREAD ACROSS THE NORTHWEST AS
ENERGY MOVES ONSHORE...

A SURFACE FRONT CURRENTLY EXTENDING FROM THE UPPER MIDWEST TO THE
CENTRAL PLAINS WILL CONTINUE TO PUSH EAST AND SOUTHWARD WITH TIME,
REACHING THE NORTHEAST/MID-ATLANTIC COAST AND THE TENNESSEE VALLEY
BY WEDNESDAY NIGHT. SHOWERS AND THUNDERSTORMS ASSOCIATED WITH THE
BOUNDARY WILL SPREAD FROM THE UPPER GREAT LAKES THIS EVENING INTO
THE OHIO VALLEY AND MID-ATLANTIC/NORTHEAST BY TOMORROW. DURING THE
AFTERNOON HOURS OF WEDNESDAY, A FEW OF THE STORMS COULD BE STRONG
TO SEVERE, ESPECIALLY IN NEW ENGLAND WHERE STRONG LIFTING AND
PLENTY OF INSTABILITY WILL BE PRESENT JUST AHEAD OF THE BOUNDARY.

OUT WEST, AN EXPANSIVE AREA OF UPPER LEVEL ENERGY WILL MOVE
ONSHORE BY WEDNESDAY EVENING. SHOWERS AND THUNDERSTORMS WILL
CONTINUE TO SPREAD ACROSS THE PACIFIC NORTHWEST, INTERMOUNTAIN
WEST, AND NORTHERN ROCKIES. A FEW OF THE THUNDERSTORMS COULD BE
SEVERE, AS FORECAST BY THE STORM PREDICTION CENTER, ESPECIALLY
ACROSS PORTIONS OF THE NORTHERN ROCKIES ON WEDNESDAY. BY WEDNESDAY
AFTERNOON, THE RAIN WILL BEGIN MOVING INTO THE NORTHERN HIGH
PLAINS, AND IS EXPECTED TO BECOME MORE WIDESPREAD ACROSS THE
DAKOTAS AND EASTERN NEBRASKA OVERNIGHT WEDNESDAY AND INTO THURSDAY.

ELSEWHERE, A WEAKENING BOUNDARY AND SMALL PIECES OF UPPER LEVEL
ENERGY ALONG THE CENTRAL GULF COAST KEEPS THE SHOWERS AND
THUNDERSTORMS IN THE FORECAST. BY WEDNESDAY AFTERNOON HOWEVER,
MOST OF THE ACTIVITY SHOULD BECOME CONFINED TO THE SOUTHEAST AND
GULF COASTS AS THE FRONT FINALLY DISAPPEARS BY THAT TIME. ACROSS
THE SOUTHWEST, DIURNALLY DRIVEN MONSOONAL MOISTURE INTO THE REGION
KEEPS AFTERNOON/EVENING SHOWERS AND STORMS IN THE FORECAST FOR THE
FOUR CORNERS REGION AND INTO THE CENTRAL ROCKIES.


MONARSKI


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