483  
FXUS01 KWBC 280653  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
253 AM EDT SUN OCT 28 2018  
 
VALID 12Z SUN OCT 28 2018 - 12Z TUE OCT 30 2018  
 
...RAIN AND ISOLATED THUNDERSTORMS SHIFT FROM THE UPPER MIDWEST TO  
THE NORTHEAST SUNDAY INTO MONDAY...  
   
..HEAVY RAINFALL POSSIBLE FOR THE PACIFIC NORTHWEST
 
 
HEAVY PRECIPITATION ASSOCIATED WITH THE COASTAL STORM ACROSS THE  
NORTHEAST HAS LIFTED INTO CANADA, WITH ONLY LIGHT AND SCATTERED  
PRECIPITATION REMAINING THIS MORNING ACROSS PARTS OF THE LOWER  
GREAT LAKES AND NORTHERN NEW ENGLAND. FARTHER WEST, RAIN AND  
ISOLATED THUNDERSTORMS WILL CONTINUE TO MOVE EAST AHEAD OF A  
STRENGTHENING AREA OF LOW PRESSURE OVER THE UPPER MIDWEST. THIS  
SYSTEM IS EXPECTED TO MOVE QUICKLY, WITH RAIN MOVING INTO THE OHIO  
VALLEY TODAY, AND ANOTHER ROUND OF ORGANIZED RAINFALL FOR THE  
NORTHERN MID-ATLANTIC AND THE NORTHEAST BY MONDAY. OVERNIGHT  
TEMPERATURES SUNDAY INTO MONDAY IN SOME LOCATIONS MAY BE COLD  
ENOUGH TO SUPPORT A CHANGEOVER FROM RAIN TO A WINTRY MIX AS WELL,  
ESPECIALLY FOR THE HIGHER TERRAIN OF THE INTERIOR NORTHEAST. GUSTY  
WINDS BEHIND THE FRONTAL PASSAGE HAS ALSO PROMPTED THE ISSUANCE OF  
WIND ADVISORIES ACROSS PORTIONS OF THE MIDWEST TODAY.  
 
OUT WEST, PERSISTENT ONSHORE FLOW WILL CONTINUE TO BRING POSSIBLE  
HEAVY RAINFALL TO THE PACIFIC NORTHWEST, WITH THE BEST ACTIVITY  
EXPECTED TO FOCUS ALONG THE FAVORED TERRAIN. AS THE FRONTAL SYSTEM  
MOVES INLAND, RAIN AND MOUNTAIN SNOW WILL ALSO MOVE INTO THE  
NORTHERN INTERMOUNTAIN WEST AND ROCKIES TODAY AND MONDAY, WITH  
SOME ACCUMULATING SNOWFALL POSSIBLE IN THE HIGHEST ELEVATIONS.  
 
TEMPERATURE WISE ACROSS THE COUNTRY, THE COLD FRONT MOVING INTO  
THE OHIO VALLEY AND THE NORTHEAST WILL KEEP TEMPERATURES BELOW  
NORMAL THE NEXT FEW DAYS AND UPPER TROUGHING ACROSS THE NORTHWEST  
WILL INTRODUCE COOLER, MORE NEAR NORMAL, TEMPERATURES IN THAT  
REGION. THE REST OF THE COUNTRY, UNDER THE INFLUENCE OF UPPER  
LEVEL RIDGING, WILL BE ABOVE NORMAL, WITH AFTERNOON HIGHS AS MUCH  
AS 10 TO 20 DEGREES ABOVE NORMAL POSSIBLE FROM THE CENTRAL GREAT  
BASIN/ROCKIES INTO THE CENTRAL PLAINS. A COMBINATION OF WARM  
TEMPERATURES AND GUSTY WINDS WILL RESULT IN ELEVATED FIRE WEATHER  
CONDITIONS ACROSS THE SIERRA FRONT WHERE A HANDFUL OF RED FLAG  
WARNINGS ARE IN EFFECT. ON MONDAY, ELEVATED FIRE WEATHER MAY ALSO  
BECOME A CONCERN ACROSS PORTIONS OF SOUTHERN CALIFORNIA.  
 
SANTORELLI  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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