767  
FXUS01 KWBC 171957  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
256 PM EST SAT NOV 17 2018  
 
VALID 00Z SUN NOV 18 2018 - 00Z TUE NOV 20 2018  
 
...LIGHT SNOW POSSIBLE ACROSS PARTS OF THE CENTRAL PLAINS AND  
MIDDLE MISSISSIPPI VALLEY, SHIFTING TO THE GREAT LAKES BY SUNDAY...  
 
...LIGHT TO MODERATE RAIN IN SOUTH TEXAS MAY LEAD TO LOCALIZED  
FLOODING...  
 
...RED FLAG WARNING IN CENTRAL CALIFORNIA IN EFFECT TODAY WITH  
ELEVATED FIRE WEATHER RISKS EXTENDED INTO SUNDAY...  
 
...AIR STAGNATION AND AIR QUALITY ALERTS CONTINUE TO BE IN EFFECT  
FOR PARTS OF THE PACIFIC NORTHWEST AND CALIFORNIA...  
 
THE ONGOING SNOW IN THE CENTRAL ROCKIES EASTWARD INTO THE MIDDLE  
MISSISSIPPI VALLEY/OHIO VALLEY WILL BEGIN TO TAPER OFF TONIGHT.  
AS THE SURFACE FRONT PROGRESSES EASTWARD, HIGH PRESSURE WILL FILL  
IN ACROSS THE ROCKIES, PLAINS AND UPPER MIDWEST. LIGHT SNOW COULD  
LINGER ACROSS THE LOWER GREAT LAKES AND OHIO VALLEY ON SUNDAY. BY  
MONDAY, AS THE FRONT CONTINUES TO PUSH EASTWARD TOWARD THE  
MID-ATLANTIC AND NORTHEAST, SHOWERS WITH SNOW IN THE HIGHER  
ELEVATIONS COULD BE POSSIBLE. FARTHER SOUTH, DEEP SOUTHERLY FLOW  
COMBINED WITH THE INCOMING COLD FRONT IN SOUTH TEXAS WILL BRING  
SHOWERS AND THUNDERSTORMS ACROSS THAT REGION. SOME OF THIS  
ACTIVITY COULD LEAD TO LOCALIZED FLOODING.  
 
A STRONG COLD FRONT WILL BEGIN TO DROP SOUTHWARD ACROSS THE GREAT  
LAKES ON SUNDAY, BRINGING SNOW ACROSS THE UPPER GREAT LAKES ON  
SUNDAY NIGHT AND INTO MONDAY.  
 
A RED FLAG WARNING IS IN EFFECT FOR THE SACRAMENTO AREA WHERE  
INFAMOUS THE CAMP FIRE IS LOCATED. LOW RELATIVE HUMIDITIES AND  
GUSTY WINDS WILL CONTRIBUTE TO THE FIRE WEATHER CONDITIONS.  
ELEVATED FIRE WEATHER RISK WILL ALSO CONTINUE INTO SUNDAY FOR THE  
CAMP FIRE/SACRAMENTO AREA IN ADDITION TO SOUTHERN CALIFORNIA. AS  
THE WILDFIRES CONTINUE TO BURN ACROSS CALIFORNIA, AIR QUALITY  
ALERTS WILL PERSIST UNTIL THE FIRES ARE EXTINGUISHED. FARTHER  
NORTH IN THE PACIFIC NORTHWEST, AIR STAGNATION ALERTS WILL  
CONTINUE THROUGH MIDWEEK. THE HIGH PRESSURE SITTING OVER THE  
WESTERN U.S. WILL ALSO GIVE WAY TO ABOVE NORMAL TEMPERATURES  
ACROSS THE WESTERN U.S. MEANWHILE, THE ARCTIC HIGH WILL LEAD TO  
TEMPERATURES NEARLY 25 DEGREES BELOW NORMAL THROUGHOUT THE PLAINS.  
TEMPERATURES ACROSS THE OHIO VALLEY AND THE EAST COAST WILL  
EXPERIENCE TEMPERATURES 5-10 DEGREES BELOW NORMAL.  
 
REINHART  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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