273  
FXUS01 KWBC 090757  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
256 AM EST SAT FEB 9 2019  
 
VALID 12Z SAT FEB 9 2019 - 12Z MON FEB 11 2019  
 
...MOST OF THE CONTINENTAL U.S. COLDER THAN AVERAGE WITH A WINTER  
STORM FOR THE WESTERN STATES...  
 
A STRONG COLD FRONT THAT EXITED THE EAST COAST ON FRIDAY HAS  
DELIVERED AN AIRMASS MORE TYPICAL OF THIS TIME OF YEAR, COMPARED  
TO THE RECENT WARM WEATHER OVER THE PAST FEW DAYS. TEMPERATURES  
ARE EXPECTED TO BE NEAR TO BELOW AVERAGE FOR MUCH OF THE EASTERN  
HALF OF THE U.S. FOR THIS WEEKEND AS A STRONG AND EXPANSIVE  
SURFACE HIGH FROM CANADA GOVERNS THE OVERALL WEATHER PATTERN. THE  
COLDEST LOCATIONS ARE EXPECTED ACROSS THE NORTHERN PLAINS AND  
UPPER MIDWEST, WHERE HIGH TEMPERATURES ARE FORECAST TO REMAIN  
EITHER IN THE SINGLE DIGITS OR SLIGHTLY BELOW ZERO FOR LOCATIONS  
NEAR THE CANADIAN BORDER. THERE WILL ALSO BE SOME LAKE EFFECT  
SNOW SHOWERS DOWNWIND OF THE GREAT LAKES THIS WEEKEND OWING TO THE  
COLD AIR ADVECTION.  
 
THE WESTERN U.S. WILL HOST ANOTHER WINTER STORM THROUGH THE  
WEEKEND AS A COLD UPPER LOW GENERATES A SURFACE LOW PRESSURE  
SYSTEM ACROSS THE PACIFIC NORTHWEST. SNOW LEVELS WILL BE LOWER  
THAN USUAL WITH THIS EVENT, REACHING SEA LEVEL ACROSS WESTERN  
WASHINGTON AND NORTHWEST OREGON. WINTER STORM WARNINGS ARE NOW IN  
EFFECT FROM THE SIERRA NEVADA TO WASHINGTON STATE AND NORTHWEST  
MONTANA, WHERE STORM TOTAL ACCUMULATIONS ARE LIKELY TO EXCEED SIX  
INCHES, AND WELL OVER A FOOT LIKELY FOR THE HIGHER ELEVATIONS.  
 
BY SUNDAY, GULF MOISTURE SURGING NORTHWARD IS FORECAST TO  
INTERSECT A FRONTAL BOUNDARY SITUATED ACROSS THE CENTRAL PLAINS TO  
THE OHIO VALLEY. THIS IS EXPECTED TO RESULT IN A ZONE OF MODERATE  
TO LOCALLY HEAVY RAINFALL FROM THE ARKLATEX REGION TO KENTUCKY ON  
SUNDAY AND SUNDAY NIGHT, WITH SOME AREAS GETTING OVER AN INCH OF  
RAINFALL. LIGHT SNOW AND A WINTRY MIX IS LIKELY NORTH OF THE  
FRONT ACROSS THE NORTHERN OHIO VALLEY TO SOUTHERN NEW ENGLAND, AND  
THIS WILL INCLUDE THE POTENTIAL FOR SOME FREEZING RAIN.  
 
D. HAMRICK  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  
 

 
 
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