510  
FXUS01 KWBC 102000  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
300 PM EST WED JAN 10 2018  
 
VALID 00Z THU JAN 11 2018 - 00Z SAT JAN 13 2018  
 
...WINTER STORM WILL UNFOLD ACROSS THE PLAINS AND MOVE EASTWARD  
INTO THE OHIO VALLEY...  
 
PRECIPITATION WILL SPREAD FROM THE HIGH PLAINS ACROSS THE UPPER  
MISSISSIPPI VALLEY AND INTO GREAT LAKES AND OHIO VALLEY REGIONS AS  
AN ARCTIC COLD FRONT MOVES THROUGH. THE BULK OF PRECIPITATION IS  
EXPECTED TO FALL AS SNOW AS TEMPERATURES PLUMMET BEHIND THE FRONT;  
HOWEVER, A SWATH OF FREEZING RAIN WILL BE POSSIBLE IN THE VICINITY  
OF THE FRONT AS IT TACKS TO EASTWARD. THIS SWATH IS FORECAST TO  
SPAN FROM WESTERN MISSOURI TO LAKE SUPERIOR ON THURSDAY,  
MID-MISSISSIPPI/WESTERN TENNESSEE VALLEY TO MICHIGAN THURSDAY  
NIGHT, FROM THE LOWER MISSISSIPPI VALLEY TO THE OHIO VALLEY/GREAT  
LAKES ON FRIDAY AND EXPANDING INTO PORTIONS OF THE MID-ATLANTIC  
AND NORTHEAST BY EARLY SATURDAY. ANY ACCUMULATING SNOW OR ICE MAY  
LEAD TO HAZARDOUS TRAVEL CONDITIONS. TEMPERATURES ACROSS MUCH OF  
THE NORTHERN-TIER STATES WILL HAVE NEARLY A 40 DEGREE DROP IN  
MAXIMUM TEMPERATURES AFTER THE FRONTAL PASSAGE, WITH MANY  
LOCATIONS STRUGGLING TO RISE ABOVE SINGLE DIGITS. STRONGER WINDS  
ASSOCIATED WITH THIS WINTER STORM WILL LIKELY CAUSE SNOW TO BLOW  
AND DRIFT, AS WELL AS, CREATE DANGEROUS WIND CHILL VALUES.  
 
ALTHOUGH TEMPERATURES ACROSS THE NORTH-CENTRAL U.S. WILL PLUMMET,  
WARMER TEMPERATURES WILL CONTINUE FOR A MAJORITY OF THE EAST COAST  
THROUGH THE WEEKEND. HIGHS ON FRIDAY AND SATURDAY ARE FORECAST TO  
MAINLY BE IN THE 50S TO LOWER 60S.  
 
THE PACIFIC NORTHWEST AND MUCH OF THE INTERMOUNTAIN WEST WILL  
CONTINUE TO HAVE RAIN AND SNOW THROUGH THE END OF THE WEEK AS A  
SERIES OF SYSTEMS APPROACH THE COAST. HEAVY SNOW CAN BE EXPECTED  
FOR PORTIONS OF THE CASCADES, BITTERROOTS AND THE ROCKIES. FOR ALL  
INFORMATION REGARDING THE SYSTEMS IN THE WEST AND THE WINTER STORM  
IN THE EAST, PLEASE CONSULT WPC'S WINTER WEATHER PRODUCTS.  
 
CAMPBELL  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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