336  
FXUS01 KWBC 131955  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
255 PM EST SAT JAN 13 2018  
 
VALID 00Z SUN JAN 14 2018 - 00Z TUE JAN 16 2018  
 
...COLD BLAST CONTINUES EASTWARD TODAY WITH SHARPLY COLDER  
TEMPERATURES FOR THE MID-ATLANTIC AND NORTHEAST...  
 
...WIDESPREAD SNOW FOR PORTIONS OF THE UPPER MIDWEST AND GREAT  
LAKES REGION...  
 
...ROLLER COASTER RIDE OF TEMPERATURES FOR THE CENTRAL TO NORTHERN  
U.S. THROUGH MONDAY..  
 
COLD AIR IS FILTERING INTO THE NORTHEAST AND MID-ATLANTIC IN THE  
WAKE THE PASSAGE OF A COLD FRONT TODAY. LINGERING PRECIPITATION  
OVER PORTIONS OF NEW ENGLAND IS STARTING TO TAPER OFF. TEMPERATURE  
SWINGS ACROSS THE NORTH-CENTRAL STATES CAN BE EXPECTED; WITH A  
WARM UP ON SUNDAY TO NEAR OR SLIGHTLY ABOVE SEASONAL AVERAGE,  
FOLLOWED BY ANOTHER SURGE OF COLD AIR AS A FRONT PASSES THROUGH.  
TEMPERATURES ON MONDAY WILL BETWEEN 15 AND 30 DEGREES BELOW  
AVERAGE. THIS SYSTEM WILL BRING WIDESPREAD SNOW, WITH LOCALIZED  
HEAVY AMOUNTS TO PORTIONS OF THE UPPER MIDWEST/UPPER GREAT LAKES  
LATE SUNDAY THROUGH EARLY TUESDAY MORNING.  
 
WARMER AND DRIER CONDITIONS WILL PERSIST ACROSS MUCH OF THE WEST  
OVER THE NEXT FEW DAYS WITH UPPER-LEVEL RIDGING ANCHORED IN PLACE.  
A PACIFIC LOW PRESSURE SYSTEM WILL BEGIN TO BRING RAIN TO COASTAL  
WASHINGTON, OREGON AND NORTHERN CALIFORNIA BY MONDAY. COVERAGE AND  
INTENSITY WILL INCREASE AS THE SYSTEM APPROACHES THE WEST COAST.  
AREAL AVERAGES OF 0.50 TO 1.50 INCHES FORECAST FOR TUESDAY, WITH  
ISOLATED AREAS NEARING 2 TO 2.50 INCHES ACROSS NORTHERN  
CALIFORNIA. PERIODS OF HEAVY RAINFALL MAY INCREASE THE RISK FOR  
FLASH FLOODING FOR THIS REGION ON TUESDAY.  
 
CAMPBELL  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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