283  
FXUS01 KWBC 231920  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
219 PM EST WED JAN 23 2019  
 
VALID 00Z THU JAN 24 2019 - 00Z SAT JAN 26 2019  
 
...WINTER STORM IMPACTING PARTS OF THE GREAT LAKES AND NORTHERN  
NEW ENGLAND TONIGHT...  
 
...ACTIVE WEATHER IN THE PACIFIC NORTHWEST WILL GRADUALLY ABATE IN  
THE NEXT COUPLE OF DAYS...  
 
...DANGEROUS WIND CHILLS AND BLIZZARD CONDITIONS RETURN TO THE  
NORTHERN PLAINS AND MIDWEST TONIGHT INTO THURSDAY...  
 
A WINTER STORM WILL CONTINUE TO SPREAD SNOW FROM THE GREAT LAKES  
TOWARD NORTHERN NEW ENGLAND TONIGHT, AS THE ASSOCIATED LOW  
PRESSURE SYSTEM INTENSIFIES AND MOVES ACROSS THESE AREAS. SOME  
MIXED PRECIPITATION CAN ALSO BE EXPECTED NEAR THE TRACK OF THE  
STORM CENTER TONIGHT ACROSS THE INTERIOR NORTHEAST. SOUTH OF THE  
STORM TRACK, RAIN IS EXPECTED AHEAD OF A STRONG COLD FRONT WITH  
SOME POTENTIAL OF HEAVY RAIN ALONG THE EAST COAST THURSDAY  
AFTERNOON. WIDESPREAD RAIN TOTALS OF AROUND AN INCH OR MORE ARE  
FORECAST, WITH LOCALIZED FLASH FLOODING POSSIBLE ACROSS COASTAL  
NORTHEAST. THE CENTRAL TO EASTERN GULF COAST REGION WILL HAVE  
BEST CHANCE OF SEEING THUNDERSTORMS TONIGHT, SOME OF WHICH COULD  
BECOME SEVERE AS THE COLD FRONT APPROACHES. AS THE SYSTEM EXITS  
THE EAST COAST ON THURSDAY, A BRIEF CHANGE OVER TO SNOW WILL BE  
POSSIBLE ACROSS THE APPALACHIANS AND INTERIOR NORTHEAST.  
 
MEANWHILE, MOISTURE ASSOCIATED WITH WHAT USED TO BE AN ENERGETIC  
PACIFIC CYCLONE IS BRINGING MODERATE TO HEAVY SNOW ACROSS THE  
NORTHERN ROCKIES. THE STRONG UPPER-LEVEL FLOW WILL CONTINUE TO  
CARRY THE MOISTURE FURTHER SOUTH ACROSS THE INTERMOUNTAIN REGION  
IN THE FORM OF SNOW. THE SNOW WILL THEN MOVE INTO THE HIGH PLAINS  
EARLY THURSDAY JUST AS THE NEXT SURGE OF ARCTIC AIR ARRIVES FROM  
CENTRAL CANADA.  
 
A CLIPPER TYPE LOW PRESSURE SYSTEM DEVELOPING ALONG AN ARCTIC  
FRONT COULD BRING A PERIOD OF SNOW SQUALLS ACROSS THE UPPER  
MIDWEST LATER TONIGHT INTO THURSDAY MORNING. THE COMBINATION OF  
SNOW COVER AND STRONG WINDS WILL LEAD TO BLIZZARD CONDITIONS  
ACROSS PORTIONS OF THE NORTHERN PLAINS. FRIGID AIR WILL THEN USHER  
INTO THE PLAINS BEHIND THIS CLIPPER AS AN ARCTIC HIGH PRESSURE  
SYSTEM PLUNGES SOUTHWARD. HIGH TEMPERATURES ON THURSDAY AND  
FRIDAY WILL STRUGGLE TO REACH ABOVE ZERO FROM NORTH DAKOTA TO  
WISCONSIN, WITH WIDESPREAD WIND CHILL VALUES BETWEEN MINUS 10 AND  
MINUS 30. BEHIND THE ARCTIC FRONT, THE LAKE EFFECT SNOW BELTS  
WILL BECOME ACTIVE WITH HEAVY SNOW EXPECTED IN THE GREAT LAKES.  
 
SNELL  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  
 

 
 
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