Prognostic Meteorological Discussion
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000
FXUS01 KWBC 182001
PMDSPD

SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
300 PM EST SAT NOV 18 2017

VALID 00Z SUN NOV 19 2017 - 00Z TUE NOV 21 2017

...HEAVY PRECIPITATION POSSIBLE OVER PARTS OF THE NORTHWEST, OHIO
VALLEY, LOWER GREAT LAKES, AND NORTHEAST...

A COMPLEX LOW PRESSURE SYSTEM MOVING THROUGH THE OHIO VALLEY TODAY
WILL CONTINUE TO LIFT THROUGH THE NORTHEAST THIS EVENING AND ON
SUNDAY. IT WILL SPREAD HEAVY PRECIPITATION TO PORTIONS OF THE
NORTHEAST.  IN ITS WAKE, LAKE EFFECT SNOWS ARE EXPECTED DOWNWIND
OF THE GREAT LAKES WITHIN THE MAIN ZONE OF ITS ASSOCIATED COLD
ADVECTION.

STRONG SURFACE HIGH PRESSURE WILL EXPAND FROM THE GREAT BASIN INTO
PORTIONS OF THE SOUTHWEST/SOUTHERN PLAINS. WARM AND DRY CONDITIONS
ARE EXPECTED ACROSS MOST OF THE SOUTHWEST AND SOUTHERN/CENTRAL
PLAINS. ELEVATED FIRE WEATHER RISK WILL CONTINUE PER THE STORM
PREDICTION CENTER.

ACROSS THE PACIFIC NORTHWEST, ONSHORE FLOW RAMPS UP AS A COLD
FRONT APPROACHES THE REGION WHICH SHOULD LEAD TO HEAVY RAINS AND
HIGHER ELEVATION SNOWS AS THE FRONT MOVES INTO THE AREA.


CAMPBELL

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





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