Prognostic Meteorological Discussion
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190
FXUS01 KWBC 242001
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
400 PM EDT SUN SEP 24 2017

VALID 00Z MON SEP 25 2017 - 00Z WED SEP 27 2017

...COLDER TEMPERATURES FORECAST FOR THE WESTERN U.S. AND WARMER
FOR THE EASTERN STATES...

WITH A DEEP UPPER-LEVEL TROUGH IN PLACE OVER THE WESTERN STATES,
BELOW AVERAGE TEMPERATURES ARE FORECAST TO PERSIST THROUGH MIDWEEK
FOR MUCH OF THIS REGION.
A FEW AREAS WITH LINGERING SNOW ACROSS THE INTERMOUNTAIN WEST WILL
DISSIPATE THIS EVENING. MOSTLY DRY CONDITIONS ARE EXPECTED FOR THE
VALLEYS AND LOWER TERRAIN.

THE EASTERN U.S. WILL CONTINUE TO HAVE WARMER TEMPERATURES AS THE
RIDGE REMAINS ANCHORED IN THE COMING DAYS. SOME LOCATIONS COULD
EVEN ACHIEVE RECORD HIGH TEMPERATURES WITH READINGS BREAKING THE
90-DEGREE MARK. A STRONG, SLOW MOVING COLD FRONT WITH MULTIPLE
WAVES OF LOW PRESSURE DEVELOPING ALONG IT WILL SPAN FROM THE UPPER
GREAT LAKES TO THE SOUTHERN ROCKIES. WIDESPREAD SHOWERS AND A FEW
THUNDERSTORMS WILL DEVELOP ALONG THIS FRONTAL BOUNDARY - IT MAY BE
HEAVY AT TIMES WHICH WOULD INCREASE THE RISK FOR EXCESSIVE
RAINFALL AND POSSIBLE FLASH FLOODING.

HURRICANE MARIA IS FORECAST TO TRACK NEAR PARTS OF THE EAST COAST
FOR THE MIDDLE OF NEXT WEEK.  CURRENT INDICATIONS SUGGEST THIS
STORM MAY COME WITHIN 200 MILES OF NORTH CAROLINA`S OUTER BANKS
BEFORE HEADING OUT TO SEA.  IN THE MEANTIME, EXPECT ROUGH SURF AND
HIGH SEAS FOR THE SOUTHEAST AND MID-ATLANTIC COASTS.  THE NATIONAL
HURRICANE CENTER HAS THE LATEST INFORMATION AND FORECAST TRACK
REGARDING THIS HURRICANE.

CAMPBELL/HAMRICK


GRAPHICS AVAILABLE AT
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
$$





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