130  
FXUS01 KWBC 310806  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
305 AM EST SUN DEC 31 2017  
 
VALID 12Z SUN DEC 31 2017 - 12Z TUE JAN 02 2018  
 
...TEMPERATURES WILL BE 20 TO 35 DEGREES BELOW AVERAGE OVER THE  
PLAINS INTO PARTS OF THE MIDDLE/UPPER MISSISSIPPI VALLEY...  
   
..HEAVY SNOW POSSIBLE DOWNWIND FROM THE GREAT LAKES
 
 
...RAIN/FREEZING RAIN POSSIBLE OVER PARTS OF THE TEXAS, LOUISIANA,  
MISSISSIPPI, AND ALABAMA...  
 
AN EXTREMELY COLD AREA OF HIGH PRESSURE EXTENDING FROM EAST OF THE  
ROCKIES TO THE EAST COAST WILL CONTINUE OVER THE AREA THROUGH  
MONDAY EVENING. A BUBBLE OF MOISTURE ASSOCIATED WITH A WAVE OF  
LOW PRESSURE ALONG THE CENTRAL/EASTERN GULF COAST WILL MOVE  
EASTWARD TO THE SOUTHEAST BY MONDAY MORNING. THE IMPULSE WILL AID  
IN PRODUCING LIGHT RAIN OVER PARTS OF THE CENTRAL GULF COAST THAT  
WILL MOVE EASTWARD TO THE SOUTHEAST BY MONDAY. A LONG THE  
NORTHERN EDGE OF THE RAIN, RAIN/FREEZING RAIN MAY DEVELOP OVER  
PARTS OF THE LOWER MISSISSIPPI VALLEY INTO PARTS OF THE SOUTHEAST  
ON SUNDAY. ALSO A FEW AREAS OF RAIN/FREEZING RAIN MAY DEVELOP  
OVER PARTS OF TEXAS ON SUNDAY.  
 
MEANWHILE, UPPER-LEVEL ENERGY OVER PARTS OF THE NORTHERN/CENTRAL  
HIGH PLAINS WILL PRODUCE LIGHT SNOW OVER THE AREA ON SUNDAY  
MORNING. IN ADDITION, ANOTHER AREA OF UPPER-LEVEL ENERGY OVER THE  
MIDDLE MISSISSIPPI VALLEY WILL MOVE EASTWARD TO THE OHIO VALLEY BY  
SUNDAY AFTERNOON. LIGHT SNOW WILL DEVELOP OVER PARTS OF THE  
REGION ON SUNDAY MORNING INTO SUNDAY AFTERNOON. ADDITIONALLY, A  
THIRD REGION OF UPPER-LEVEL ENERGY OVER WEST-CENTRAL ONTARIO WILL  
MOVE OVER THE GREAT LAKES ALONG WITH THE VERY COLD AIR PRODUCING  
LAKE EFFECT SNOW DOWNWIND FROM THE GREAT LAKES THROUGH MONDAY  
EVENING.  
 
ZIEGENFELDER  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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