044  
FXUS01 KWBC 100759  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
258 AM EST WED JAN 10 2018  
 
VALID 12Z WED JAN 10 2018 - 12Z FRI JAN 12 2018  
 
...WINTER STORM WILL UNFOLD ACROSS THE PLAINS AND MOVE EASTWARD  
INTO THE OHIO VALLEY...  
 
PRECIPITATION WILL CONTINUE ACROSS THE INTERMOUNTAIN WEST THROUGH  
MOST OF WEDNESDAY--FALLING AS RAIN AND HIGHER ELEVATION SNOW.  
PRECIPITATION WILL BEING TO SPREAD ACROSS THE NORTHERN AND  
PORTIONS OF THE CENTRAL PLAINS LATER INTO WEDNESDAY NIGHT AND  
EARLY THURSDAY MORNING. COLD AIR FROM THE ARCTIC HIGH PRESSURE  
SPILLING INTO THE CENTRAL U.S. WILL ALLOW THIS PRECIPITATION TO  
FALL AS SNOW. AS THE FRONTAL SYSTEM ASSOCIATED WITH THIS WINTER  
STORM PROGRESSES EASTWARD, THE BULK OF PRECIPITATION WILL ALSO  
FOLLOW. HOWEVER, BY LATE WEDNESDAY NIGHT AND INTO EARLY THURSDAY  
MORNING, AREAS NEAR THE RAIN/SNOW LINE WILL BEGIN TO SEE WINTRY  
MIX ESPECIALLY IN THE MIDDLE MISSISSIPPI VALLEY. THIS WINTRY MIX  
WILL INCREASE AS IT MOVES INTO THE OHIO VALLEY ON FRIDAY. THE  
LOWER MISSISSIPPI VALLEY AND SOUTHEAST CAN EXPECT RAINFALL ON  
THURSDAY NIGHT/FRIDAY MORNING. MEANWHILE, SNOW WILL MOVE FROM THE  
NORTHERN/CENTRAL PLAINS ON WEDNESDAY INTO THE MIDDLE MISSISSIPPI  
VALLEY AND UPPER MIDWEST BY THURSDAY. SNOW WILL BE MAINLY CONFINED  
TO THE GREAT LAKES REGION ON FRIDAY MORNING BEFORE IT INCREASES IN  
THE OHIO VALLEY--BEYOND THE SHORT TERM PERIOD. FOR ALL  
INFORMATION REGARDING THIS WINTER STORM, PLEASE CONSULT WPC'S  
WINTER WEATHER PRODUCTS.  
 
MOST OF THE EASTERN HALF OF THE U.S. WILL EXPERIENCE WARMER THAN  
NORMAL HIGH TEMPERATURES ON WEDNESDAY--ESPECIALLY IN THE PLAINS.  
HOWEVER, ONCE THE ARCTIC HIGH PRESSURE NUDGES INTO THE NORTHERN  
PLAINS ON THURSDAY, MUCH COLDER TEMPERATURES WILL REINTRODUCE  
THEMSELVES IN THE PLAINS--WHILE THE WARMER TEMPERATURES CONTINUE  
ACROSS THE GREAT LAKES AND NORTHEAST. MOST OF THE EAST COAST WILL  
EXPERIENCE WARM TEMPERATURES FOR THIS TIME OF YEAR ON  
FRIDAY--WHILE THE CENTRAL PORTION OF THE COUNTRY WILL BE COLD AS  
THE WINTER STORM SWEEPS ACROSS THOSE REGIONS.  
 
REINHART  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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