306  
FXUS01 KWBC 240801  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
300 AM EST THU JAN 24 2019  
 
VALID 12Z THU JAN 24 2019 - 12Z SAT JAN 26 2019  
 
...RAIN CHANGING TO SNOW TODAY AS AN ACTIVE COLD FRONT MOVES  
ACROSS THE EASTERN SEABOARD...  
   
..SNOW OVER THE NORTHERN ROCKIES WILL GRADUALLY TAPER OFF
 
 
...COLD WEATHER EXPECTED TO SPREAD ACROSS THE PLAINS INTO THE  
SOUTHEAST INTO THE WEEKEND...  
 
A MILD AIR STREAM FROM THE SOUTH HAS QUICKLY BROUGHT ABOVE NORMAL  
TEMPERATURES UP THE EAST COAST AHEAD OF AN ACTIVE COLD FRONT. A  
WIDE SWATH RAIN WILL ACCOMPANY THIS COLD FRONT AS IT SWEEPS ACROSS  
THE ENTIRE EASTERN SEABOARD TODAY WITH SOME POTENTIAL FOR HEAVY  
RAIN WHICH COULD RESULT IN FLOODING ISSUES FOR SOUTHERN NEW  
ENGLAND. THE EASTERN GULF COAST WILL SEE THE BEST CHANCE OF  
STRONG TO SEVERE THUNDERSTORMS THIS MORNING BEFORE THE COLD FRONT  
MOVES OFF INTO THE ATLANTIC. COLD AIR BEHIND THE FRONT IS  
EXPECTED TO CHANGE THE RAIN TO A PERIOD OF SNOW UP THE SPINE OF  
THE APPALACHIANS TODAY AND ACROSS INTERIOR NEW ENGLAND TONIGHT.  
 
OVER THE NORTHERN PLAINS, THE NEXT SURGE OF ARCTIC AIR FROM  
CENTRAL CANADA HAS ARRIVED. A CLIPPER LOW PRESSURE SYSTEM  
DEVELOPING ALONG AN ARCTIC FRONT IS BRINGING A BRIEF PERIOD OF  
SNOW SQUALLS ACROSS THE UPPER MIDWEST. THE SNOW IS EXPECTED TO  
MOVE INTO THE GREAT LAKES TONIGHT AND LINGERS INTO FRIDAY OVER THE  
LAKE EFFECT SNOW BELTS. ARCTIC AIR IS FORECAST TO LINGER OVER THE  
UPPER MIDWEST INTO THE WEEKEND WHERE TEMPERATURES OF MORE THAN 20  
DEGREES BELOW NORMAL CAN BE EXPECTED. MEANWHILE, A WARMING TREND  
WILL BEGIN TO SET IN ACROSS THE NORTHERN HIGH PLAINS AS CHINOOK  
WINDS DEVELOP BEHIND AN ARCTIC HIGH PRESSURE SYSTEM. THIS ARCTIC  
HIGH IS FORECAST TO PLUNGE SOUTHEASTWARD THROUGH THE PLAINS  
THROUGH FRIDAY, REACHING THE SOUTHEAST ON SATURDAY BRINGING COLD  
CONDITIONS TO MUCH OF THE DEEP SOUTH FOR THE WEEKEND.  
 
MEANWHILE, SNOW ACROSS THE NORTHERN ROCKIES ARE EXPECTED TO  
GRADUALLY TAPER OFF INTO SCATTERED LIGHT SNOW BY TONIGHT. IT  
APPEARS THAT MORE QUIET WEATHER IS RETURNING TO MUCH OF THE  
WESTERN U.S. AS WE HEAD INTO THE WEEKEND.  
 
KONG  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  
 

 
 
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