Prognostic Meteorological Discussion
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000
FXUS01 KWBC 282036
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
435 PM EDT TUE JUL 28 2015

VALID 00Z WED JUL 29 2015 - 00Z FRI JUL 31 2015

...SEVERE THUNDERSTORMS POSSIBLE ACROSS THE MIDDLE MISSISSIPPI
VALLEY...

...FLASH FLOODING POSSIBLE PORTIONS OF THE GREAT BASIN, SOUTHERN
PLAINS AND MIDDLE MISSISSIPPI VALLEY...

...ABOVE NORMAL TEMPERATURES TO PREVAIL ACROSS THE WEST COAST...

A STRONG UPPER TROUGH WILL MOVE THROUGH CENTRAL AND EASTERN
PORTIONS OF THE U.S OVER THE NEXT FEW DAYS. WIDESPREAD
PRECIPITATION IS EXPECTED WITH THE NORTHERN PORTION OF THE FRONTAL
SYSTEM AS IT TRACKS ACROSS THE NORTHERN PLAINS, THE CANADIAN
PRAIRIES AND THE UPPER MIDWEST. CONDITIONS THAT ARE FAVORABLE FOR
SEVERE THUNDERSTORMS WILL DEVELOP NEAR THE CENTRAL SECTION OF THE
FRONT ON WEDNESDAY. PORTIONS OF THE UPPER MISSISSIPPI VALLEY, IOWA
AND NORTHERN MISSOURI COULD OBSERVE EXCESSIVE RAINFALL, WITH
POSSIBLE FLASH FLOODING. SCATTERED AREAS OF SHOWERS AND
THUNDERSTORMS ARE EXPECTED ALONG AND AHEAD OF THE SOUTHERN SECTION
OF THE FRONT AS IT MOVES INTO THE MID-ATLANTIC, THE SOUTHEAST AND
SOUTHERN PLAINS BY FRIDAY. THUNDERSTORMS THAT DEVELOP OVER
NORTHEAST NEW MEXICO AND THE PANHANDLES OF TEXAS AND OKLAHOMA MAY
PRODUCE HEAVY RAIN ON THURSDAY AND FRIDAY; WHICH, MAY LEAD TO
FLASH FLOODS.

A RIDGE WILL REBUILD OVER THE WEST IN THE WAKE OF THE STRONG
FRONTAL SYSTEM. TEMPERATURES WILL CLIMB ABOVE SEASONAL NORMALS FOR
THE WEST COAST. MANY LOCATIONS MAY OBSERVE TEMPERATURES AROUND 10
TO 15 DEGREES WARMER THAN TYPICAL THOSE IN LATE JULY.


CAMPBELL

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





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