421  
FXUS01 KWBC 312012  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
308 PM EST MON DEC 31 2018  
 
VALID 00Z TUE JAN 01 2019 - 00Z THU JAN 03 2019  
 
...A LOW PRESSURE SYSTEM WILL BRING RAIN ACROSS OHIO VALLEY INTO  
THE MID-ATLANTIC AND SEVERE STORMS EAST OF THE LOWER MISSISSIPPI  
VALLEY FOR NEW YEAR'S EVE...  
 
...THE SAME SYSTEM WILL BRING WINTRY WEATHER FROM THE UPPER  
MIDWEST ACROSS THE GREAT LAKES INTO INTERIOR NEW ENGLAND INTO NEW  
YEAR'S DAY...  
   
..MORE SNOW FOR THE FOUR CORNERS INTO NEW MEXICO
 
 
AN ENERGETIC LOW PRESSURE SYSTEM IS EXPECTED TO TRACK RAPIDLY  
ACROSS THE MIDWEST THIS EVENING AND INTO NORTHERN NEW ENGLAND ON  
NEW YEAR'S DAY. A LARGE AREA OF RAIN AHEAD OF THE WARM FRONT AND  
THE LOW PRESSURE SYSTEM WILL SPREAD ACROSS THE OHIO VALLEY INTO  
THE MID-ATLANTIC THROUGH TONIGHT. MEANWHILE, STRONG TO SEVERE  
THUNDERSTORMS ARE LIKELY THROUGH THIS EVENING EAST OF THE LOWER  
MISSISSIPPI VALLEY AHEAD OF A STRONG COLD FRONT. THE SAME SYSTEM  
WILL ALSO BRING WINTRY WEATHER FROM THE UPPER MIDWEST ACROSS THE  
GREAT LAKES INTO INTERIOR NEW ENGLAND INTO NEW YEAR'S DAY. ALONG  
AND SOUTHEAST OF THE COLD FRONT, MILD/WARM TEMPERATURES WILL SURGE  
NORTHWARD AND RECORD HIGHS MAY BE TIED/BROKEN TODAY OVER THE  
SOUTHEAST BUT ESPECIALLY FLORIDA INTO TUESDAY.  
 
MEANWHILE, AN ARCTIC COLD FRONT WILL CONTINUE TO DROP SOUTH AND  
EASTWARD ACROSS THE PLAINS THROUGH NEW YEAR'S DAY. THIS ARCTIC  
BOUNDARY WILL CAUSE TEMPERATURES TO PLUMMET THROUGH THE DAY ACROSS  
PARTS OF THE CENTRAL PLAINS AS WIND CHILLS REACH HAZARDOUS LEVELS  
(-10 TO -30 DEGREES F) FROM MONTANA THROUGH NEBRASKA THROUGH  
TUESDAY MORNING. SOME LIGHT TO MODERATE SNOW WILL ACCOMPANY THE  
FRONTAL PASSAGE AND WILL BE BLOWN AROUND BY STRONG WINDS OF 20-35  
MPH GUSTING TO 50MPH. AN UPPER-LEVEL LOW IS FORECAST TO DEVELOP  
OVER THE FOUR CORNER REGION, BRINGING YET ANOTHER ROUND OF  
SIGNIFICANT SNOWFALL FOR PARTS OF ARIZONA, COLORADO, AND NEW  
MEXICO. SOME LOCATIONS ARE FORECAST TO RECEIVE 1-3 INCHES IN THE  
VALLEYS BUT 6-12 INCHES IN THE MOUNTAINS. HIGH TEMPERATURES ON  
TUESDAY WILL BE VERY COLD OVER NEW MEXICO AND THE TEXAS PANHANDLE  
WHERE HIGHS WILL ONLY REACH THE HIGH 10S AND 20S. BY WEDNESDAY,  
THE UPPER-LEVEL LOW IS FORECAST TO HEAD EAST TOWARDS THE SOUTHERN  
PLAINS, SNOW MAINLY OVER NEW MEXCIO SHOULD GRADUALLY TAPER OFF.  
HOWEVER, THE UPPER LOW WILL BEGIN TO PULL WARM AND MOIST AIR FROM  
THE GULF OF MEXICO INTO THE WESTERN GULF STATES, WHERE RAIN WILL  
BECOME LIKELY WEDNESDAY NIGHT, ALONG WITH SCATTERED THUNDERSTORMS.  
 
KONG/FRACASSO  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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