190  
FXUS01 KWBC 180633  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
132 AM EST TUE DEC 18 2018  
 
VALID 12Z TUE DEC 18 2018 - 12Z THU DEC 20 2018  
 
...CONTINUED UNSETTLED IN THE WEST TODAY WITH STRONG WINDS INTO  
OREGON...  
   
..INCREASINGLY WET THROUGH THE GULF COAST WEDNESDAY
 
 
A STRONG COLD FRONT WILL MOVE INTO WASHINGTON AND OREGON TODAY  
WITH ANOTHER ROUND OF LOWER ELEVATION RAIN AND MOUNTAIN SNOW.  
WINDS WILL BE STRONG OUT OF THE SOUTH AHEAD OF THE FRONT  
ESPECIALLY OVER COASTAL OREGON WHERE HIGH WIND WARNINGS CONTINUE  
THROUGH THE FIRST PART OF TUESDAY. LOCALIZED FLOODING REMAINS A  
POSSIBILITY IN HEAVIER BURSTS OF RAIN. IN THE MOUNTAINS, 1-3 FEET  
OF SNOW IS POSSIBLE AT THE HIGHER ELEVATIONS (E.G., NORTH  
WASHINGTON CASCADES) WITH OVER A FOOT POSSIBLE TO THE EAST IN THE  
MOUNTAINS OF THE NORTH IDAHO PANHANDLE. IN ADDITION, AVALANCHES  
ARE POSSIBLE ON PARTS OF THE WASHINGTON CASCADES DUE TO THE RECENT  
HEAVY SNOWFALL ACCUMULATION.  
 
THE REST OF THE LOWER 48 WILL BE RELATIVELY QUIET TODAY WITH WELL  
ABOVE NORMAL TEMPERATURES OVER THE HIGH PLAINS (ABOUT +20F  
ANOMALIES) THAT WILL REACH INTO THE 40S/50S. HIGH PRESSURE WILL  
PUSH THROUGH THE GREAT LAKES WITH COLDER THAN NORMAL TEMPERATURES  
CONFINED TO THE NORTHEAST/MID-ATLANTIC AND PARTS OF FLORIDA, BUT  
BOTH AREAS WILL MODERATE ON WEDNESDAY.  
 
ON WEDNESDAY, A SYSTEM MOVING OUT OF TEXAS WILL REDEVELOP TO THE  
EAST ALONG THE GULF COAST WHERE RAIN AND SOME STORMS WILL EXPAND  
IN COVERAGE. RAINFALL IS FORECAST TO BE GENERALLY UNDER AN INCH IN  
THESE AREAS, WITH LOCALLY HIGHER AMOUNTS ABOVE AN INCH OVER PARTS  
OF THE FLORIDA PANHANDLE. MUCH LIGHTER RAIN IS FORECAST NORTH OF  
I-40 WITH ONLY WIDELY SCATTERED SHOWERS EAST OF THE DIVIDE TO THE  
GREAT LAKES AS THE ONCE STRONG COLD FRONT WEAKENS THROUGH THE  
DAKOTAS.  
 
FRACASSO  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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