Prognostic Meteorological Discussion
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FXUS01 KWBC 222055
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
454 PM EDT FRI MAY 22 2015

VALID 00Z SAT MAY 23 2015 - 00Z MON MAY 25 2015

***HIGH QUALITY AIRMASS OVER THE EASTERN U.S. THIS WEEKEND***

***HEAVY RAIN AND STORMY WEATHER CONTINUES FOR SOUTHERN PLAINS***

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

THE COOL AND REFRESHING TEMPERATURES ARE EXPECTED TO CONTINUE ON
SATURDAY ACROSS MUCH OF THE EASTERN U.S.  A REINFORCING COLD FRONT
ARRIVING FROM CANADA WILL BRING A BRIEF PERIOD OF COOL WEATHER AND
LOW HUMIDITY FROM THE OHIO VALLEY TO THE EAST COAST, MAKING IT
VERY PLEASANT FOR OUTDOOR ACTIVITIES.  BY SUNDAY, TEMPERATURES
WILL BEGIN WARMING UP AS THE SURFACE HIGH BEGINS MOVING OFFSHORE
AND SOUTHERLY FLOW RETURNS.  UNCOMFORTABLY WARM WEATHER RETURNS TO
THE EAST COAST REGION BY EARLY NEXT WEEK.

OVER TEXAS AND OKLAHOMA, MORE BAD WEATHER IS EXPECTED DURING THE
SHORT-TERM FORECAST PERIOD WITH MULTIPLE ROUNDS OF HEAVY RAIN AND
SEVERE THUNDERSTORMS.  DEEP MOISTURE FROM THE GULF OF MEXICO WILL
CONTINUE FLOWING NORTHWARD AROUND THE BACKSIDE OF THE SURFACE HIGH
TO THE EAST.  FLOODING REMAINS A SERIOUS CONCERN FOR THESE AREAS
GIVEN ALREADY SATURATED GROUND AND RIVERS OVERFLOWING THEIR BANKS.
 SEVERAL INCHES OF RAINFALL IS A GOOD POSSIBILITY AND FLASH FLOOD
WATCHES ARE ALREADY IN EFFECT.

FOR THE WESTERN U.S., THE PRESENCE OF THE UPPER LEVEL TROUGH WILL
ALLOW FOR THE DEVELOPMENT OF SCATTERED SHOWERS AND STORMS FROM
INLAND PORTIONS OF CALIFORNIA TO THE FRONT RANGE OF THE ROCKIES.
SNOW IS LIKELY FOR THE HIGHEST MOUNTAIN RANGES, ESPECIALLY DURING
THE OVERNIGHT PERIODS.

HAMRICK


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