146  
FXUS01 KWBC 241934  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
233 PM EST THU JAN 24 2019  
 
VALID 00Z FRI JAN 25 2019 - 00Z SUN JAN 27 2019  
 
...RAIN CHANGING TO SNOW TODAY AS AN ACTIVE COLD FRONT MOVES OFF  
THE EASTERN SEABOARD...  
 
...COLD WEATHER EXPECTED TO SPREAD ACROSS THE PLAINS INTO THE  
SOUTHEAST BY THE END OF THE WEEK...  
   
..TRANQUIL WEATHER RETURNS TO THE WEST THROUGH THE WEEKEND
 
 
A STREAM OF MILD AIR FROM THE SOUTH HAS QUICKLY BROUGHT ABOVE  
NORMAL TEMPERATURES UP THE EAST COAST AND INTO NEW ENGLAND AHEAD  
OF AN ACTIVE COLD FRONT. A WIDE SWATH OF RAIN WILL MOVE OUT OF  
THE MID-ATLANTIC AND NORTHEAST TONIGHT. THERE IS SOME POTENTIAL  
FOR HEAVY RAIN TO CAUSE LOCALIZED FLOODING OVER SOUTHERN NEW  
ENGLAND. COLD AIR BEHIND THE FRONT IS EXPECTED TO CHANGE THE RAIN  
TO A PERIOD OF SNOW AS IT SPREADS UP THE SPINE OF THE APPALACHIANS  
AND ACROSS INTERIOR NEW ENGLAND OVERNIGHT.  
 
OVER THE NORTHERN PLAINS AND UPPER MIDWEST, 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 GREAT LAKES. THE SNOW IS  
EXPECTED TO LINGER INTO FRIDAY OVER THE LAKE-EFFECT SNOW BELTS.  
ARCTIC AIR IS FORECAST TO REMAIN OVER THE UPPER MIDWEST INTO THE  
WEEKEND, WHERE TEMPERATURES OF MORE THAN 20 DEGREES BELOW NORMAL,  
AS WELL AS DANGEROUS WIND CHILLS BETWEEN MINUS 10 AND MINUS 30 CAN  
BE EXPECTED. ANOTHER CLIPPER SYSTEM COULD BRING A PERIOD OF LIGHT  
SNOW TO THE NORTHERN PLAINS AND MIDWEST BY EARLY SATURDAY.  
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 AND INTO THE  
SOUTHEAST ON SATURDAY, BRINGING COLD CONDITIONS TO MUCH OF THE  
DEEP SOUTH FOR THE WEEKEND.  
 
MEANWHILE, SNOW ACROSS THE NORTHERN AND CENTRAL ROCKIES IS  
EXPECTED TO GRADUALLY TAPER OFF INTO SCATTERED LIGHT SNOW TONIGHT.  
IT APPEARS THAT MORE QUIET WEATHER IS RETURNING TO MUCH OF THE  
WESTERN U.S. AS WE HEAD INTO THE WEEKEND.  
 
SNELL  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  
 

 
 
CLICK HERE TO GO TO PREVIOUS BULLETINS.

The Nexlab HPC Page Main Text Page