512  
FXUS01 KWBC 221840  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
139 PM EST TUE JAN 22 2019  
 
VALID 00Z WED JAN 23 2019 - 00Z FRI JAN 25 2019  
 
...WINTER STORM TO IMPACT PARTS OF THE CENTRAL PLAINS INTO THE  
UPPER MIDWEST AND GREAT LAKES THROUGH WEDNESDAY...  
   
..ACTIVE WEATHER RETURNS TO THE PACIFIC NORTHWEST
 
 
...DANGEROUS WIND CHILLS RETURN TO THE NORTHERN PLAINS AND MIDWEST  
THURSDAY...  
 
A LOW PRESSURE SYSTEM WILL CONTINUE TO STRENGTHEN AS IT EXITS THE  
CENTRAL PLAINS THIS TUESDAY AFTERNOON. PARTS OF THE CENTRAL HIGH  
PLAINS HAVE ALREADY BEEN IMPACTED BY BLIZZARD OR NEAR-BLIZZARD  
CONDITIONS AS THE STORM INTENSIFIES. THIS LOW IS FORECAST TO TRACK  
EAST-NORTHEAST INTO THE GREAT LAKES THROUGH WEDNESDAY. A SWATH OF  
SNOW IS EXPECTED TO THE NORTH OF THE STORM TRACK WITH UP TO A FOOT  
OF ACCUMULATION POSSIBLE OVER THE GREAT LAKES. SOME MIXED  
PRECIPITATION CAN ALSO BE EXPECTED NEAR THE STORM TRACK, AS WELL  
AS PARTS OF THE INTERIOR NORTHEAST ON WEDNESDAY. SOUTH OF THE  
STORM TRACK, RAIN IS EXPECTED AHEAD OF A COLD FRONT AND SOME  
THUNDERSTORMS WILL BE POSSIBLE. WIDESPREAD RAIN TOTALS OF AROUND  
AN INCH OR MORE ARE FORECAST.  
 
MEANWHILE, MOISTURE ASSOCIATED WITH A RATHER ENERGETIC PACIFIC  
CYCLONE IS IMPACTING THE PACIFIC NORTHWEST. RAIN COULD BECOME  
HEAVY LATER TODAY OVER THE COASTAL SECTIONS AS WELL AS ACROSS THE  
OLYMPIC PENINSULA. THE MOISTURE WILL THEN CONTINUE TO PENETRATE  
FURTHER INLAND, REACHING THE INTERMOUNTAIN REGION ON WEDNESDAY IN  
THE FORM OF SNOW. THE SNOW WILL MOVE INTO THE NORTHERN ROCKIES  
WEDNESDAY NIGHT AND EARLY THURSDAY JUST AS THE NEXT SURGE OF  
ARCTIC AIR FROM CENTRAL CANADA ARRIVES.  
 
THIS NEXT ROUND OF MUCH BELOW AVERAGE TEMPERATURES WILL ENTER THE  
NORTHERN PLAINS AND UPPER MIDWEST ON THURSDAY, BEFORE PUSHING  
FURTHER SOUTH AND EAST INTO THE OHIO VALLEY THURSDAY NIGHT. HIGH  
TEMPERATURES ON THURSDAY WILL STRUGGLE TO REACH ABOVE ZERO FROM  
NORTH DAKOTA TO WISCONSIN, WITH WIDESPREAD WIND CHILL VALUES  
BETWEEN MINUS 10 AND MINUS 20. EXISTING SNOW COVER AND STRONG  
WINDS WITH THE ARCTIC COLD FRONT MAY COMBINE TO PRODUCE GROUND  
BLIZZARD CONDITIONS IN PARTS OF THE NORTHERN PLAINS FROM LATER  
WEDNESDAY INTO THURSDAY MORNING.  
 
LAMERS/SNELL  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  
 

 
 
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