Prognostic Meteorological Discussion
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000
FXUS01 KWBC 262058
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
457 PM EDT TUE MAY 26 2015

VALID 00Z WED MAY 27 2015 - 00Z FRI MAY 29 2015

***STORMY WEATHER FOR PARTS OF THE DEEP SOUTH AND SOUTHERN
PLAINS***

***SCATTERED SHOWERS AND THUNDERSTORMS OVER THE WESTERN U.S.***

***WARM AND HUMID ACROSS MUCH OF THE EASTERN U.S.***

AFTER AN EXTREMELY ACTIVE PERIOD OF HEAVY RAINFALL AND FLOODING
OVER THE SOUTHERN PLAINS FOR THE PAST FEW DAYS, IT APPEARS THAT
THE ATMOSPHERE IS SETTLING DOWN SOME FOR THAT REGION.  HOWEVER,
THERE WILL STILL BE DAILY SHOWERS AND STORMS THAT DEVELOP IN
RESPONSE TO DAYTIME HEATING, AND A FEW OF THESE STORMS COULD
BECOME SEVERE.  OKLAHOMA WILL LIKELY HAVE THE GREATEST RAINFALL
POTENTIAL OUT OF THE CENTRAL U.S. STATES DURING THE NEXT COUPLE OF
DAYS.  PERIODS OF HEAVY RAINFALL ARE ALSO LIKELY FROM THE DEEP
SOUTH TO THE CENTRAL APPALACHIANS.

OVER THE WESTERN THIRD OF THE U.S., MAINLY DIURNALLY DRIVEN
SHOWERS AND THUNDERSTORMS CAN BE EXPECTED EACH AFTERNOON AND
EVENING FROM THE SIERRA NEVADA MOUNTAINS TO THE FRONT RANGE OF THE
ROCKY MOUNTAINS.  INSTABILITY FROM A BROAD UPPER LEVEL TROUGH OVER
THE REGION WILL PROMOTE THE DEVELOPMENT OF THIS CONVECTION, AND
THE GREATEST COVERAGE IS EXPECTED FROM UTAH TO WESTERN MONTANA.

THE BERMUDA HIGH OFF THE EAST COAST IS ALLOWING FOR BUILDING HEAT
AND HUMIDITY ACROSS MUCH OF THE EASTERN U.S. THIS WEEK.  SUSTAINED
SOUTHERLY FLOW AND RIDGING ALOFT WILL RESULT IN WIDESPREAD HIGHS
IN THE 80S TO LOWER 90S ALONG WITH DEWPOINTS WELL INTO THE 60S TO
AROUND 70 DEGREES, WHICH IS MORE TYPICAL OF LATE JUNE.  SCATTERED
SHOWERS AND STORMS WILL BE POSSIBLE EACH AFTERNOON.  HOWEVER, THE
STRENGTH AND SEVERITY WILL BE SIGNIFICANTLY LESS THAN WHAT IS
HAPPENING OVER THE PLAINS GIVEN THE STRONG RIDGE OFF THE COAST.

HAMRICK


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