Prognostic Meteorological Discussion
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000
FXUS01 KWBC 010756
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
355 AM EDT MON SEP 1 2014

VALID 12Z MON SEP 1 2014 - 12Z WED SEP 3 2014

***SCATTERED SEVERE STORMS FROM THE CENTRAL PLAINS TO THE
MID-ATLANTIC***

***HOT AND HUMID FOR THE SOUTHERN AND EASTERN U.S.***

***DRIER AND COOLER FOR THE WESTERN U.S. THROUGH MIDWEEK***

A COUPLE OF FRONTAL BOUNDARIES ARE FORECAST TO AFFECT THE NORTHERN
TIER OF THE U.S. THROUGH THE MIDDLE OF THE WORK WEEK.  THE SYSTEM
THAT IS EXPECTED TO BRING THE GREATEST IMPACT WILL BE THE FRONT
CURRENTLY MOVING THROUGH THE MIDWEST AND EVENTUALLY TO THE EAST
COAST BY TUESDAY NIGHT.  MULTIPLE THUNDERSTORM COMPLEXES ARE
EXPECTED TO DEVELOP IN THE VICINITY OF THIS FRONTAL BOUNDARY AS IT
MOVES EAST, AND SOME SEVERE STORMS WILL BE POSSIBLE AS IT
INTERACTS WITH A HOT AND HUMID AIR MASS WITH WIND SHEAR ALOFT.

STRONG UPPER LEVEL RIDGING OVER THE SOUTHERN AND EASTERN PART OF
THE U.S. WILL HELP KEEP TEMPERATURES ABOVE NORMAL AS WE HEAD INTO
THE FIRST FEW DAYS OF SEPTEMBER.  WIDESPREAD HIGHS IN THE 90S ARE
LIKELY FROM TEXAS TO THE MID-ATLANTIC, AND TRIPLE DIGIT
TEMPERATURES ARE FORECAST FOR THE LOWER ELEVATIONS OF THE DESERT
SOUTHWEST.  HEAT INDICES COULD EASILY REACH 100 DEGREES OR HIGHER
DURING THE AFTERNOON HOURS.

OUT WEST, BEHIND A SLOWLY PROGRESSIVE COLD FRONT, COOLER
TEMPERATURES AND HIGH PRESSURE WILL BE ENJOYED THROUGH THE MIDDLE
OF THE WEEK.  THE VAST MAJORITY OF LOCATIONS WEST OF THE
CONTINENTAL DIVIDE SHOULD REMAIN DRY.  A FEW ISOLATED SHOWERS OR
STORMS CANNOT BE RULED OUT, AS PIECES OF WEAK SHORTWAVE ENERGY IN
THE FLOW ALOFT MOVE THROUGH THE NORTHERN ROCKIES AND THE HIGHER
TERRAIN OF THE PACIFIC NORTHWEST.  IT APPEARS THAT THE MOISTURE
ASSOCIATED WITH THE MONSOON IS NOW SOUTH OF THE BORDER IN MEXICO.

HAMRICK


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