798  
FXUS01 KWBC 071959  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
258 PM EST SUN JAN 7 2018  
 
VALID 00Z MON JAN 8 2018 - 00Z WED JAN 10 2018  
 
...WIDESPREAD PRECIPITATION RETURNS TO THE WESTERN U.S. AND THE  
COLD WEATHER STARTS TO ABATE SOME ACROSS THE EASTERN STATES...  
 
THE FRIGID WEATHER CONTINUES TO MAKE WEATHER HEADLINES ACROSS THE  
EASTERN THIRD OF THE NATION AS A MASSIVE ARCTIC AIR MASS SLOWLY  
MOVES OFF THE MID-ATLANTIC COAST. AFTER RECORD COLD ACROSS MUCH  
OF THE EAST COAST, A GRADUAL WARM-UP ENSUES ON MONDAY AFTER  
ANOTHER VERY COLD NIGHT SUNDAY NIGHT, ALBEIT NOT TO THE EXTREMES  
OBSERVED ON SATURDAY NIGHT FOR MOST AREAS. WITH THE DEPARTURE OF  
THE ARCTIC HIGH COMES THE NEXT THREAT OF WINTRY PRECIPITATION  
ACROSS THE MIDWEST AND OHIO VALLEY SUNDAY NIGHT, AND NORTHERN  
PORTIONS OF THE MID-ATLANTIC ON MONDAY. WINTER WEATHER ADVISORIES  
ARE IN EFFECT FOR LIGHT FREEZING RAIN AND SLEET FOR THESE AREAS,  
AND LIGHT TO MODERATE SNOW FARTHER TO THE NORTH. THIS WILL MAINLY  
BE A NUISANCE TYPE EVENT.  
 
WITH A LARGE SCALE TROUGH AND UPPER LEVEL LOW APPROACHING THE  
CALIFORNIA COAST ON MONDAY NIGHT, THE RECENT DRY CONDITIONS ARE  
FORECAST TO GIVE WAY TO WIDESPREAD SHOWERS AND MOUNTAIN SNOW FOR  
THE FIRST HALF OF THE WORK WEEK. THIS WILL PROVIDE WELCOME RELIEF  
FOR ANY REMAINING FIRE-FIGHTING EFFORTS. SOME AREAS NEAR THE  
COAST MAY RECEIVE 2 TO LOCALLY 4 INCHES OF RAINFALL THROUGH LATE  
TUESDAY, AND OVER A FOOT OF FRESH SNOW FOR THE SIERRA MOUNTAINS.  
 
ANOTHER LOW PRESSURE SYSTEM NEAR THE GULF COAST WILL PROVIDE  
WIDESPREAD RAINFALL FROM THE SOUTHERN PLAINS TO THE DEEP SOUTH,  
WITH LOCALLY HEAVY RAINFALL POSSIBLE OVER PARTS OF LOUISIANA AND  
MISSISSIPPI ON MONDAY. FLOOD WATCHES ARE IN EFFECT FOR PARTS OF  
THE CENTRAL GULF COAST WHERE RAINFALL AMOUNTS COULD LOCALLY EXCEED  
TWO INCHES.  
 
HAMRICK  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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