543  
FXUS01 KWBC 260758  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
257 AM EST TUE FEB 26 2019  
 
VALID 12Z TUE FEB 26 2019 - 12Z THU FEB 28 2019  
 
...HEAVY RAIN FORECAST FOR THE NORTHERN CALIFORNIA COAST, WITH  
FLOODING POSSIBLE...  
   
..MULTIPLE FEET OF SNOW EXPECTED IN THE SIERRA NEVADA
 
 
...20 TO 40 DEGREES BELOW NORMAL TEMPERATURES CONTINUE FOR THE  
NORTHERN/CENTRAL PLAINS AND UPPER MIDWEST, AND SNOW IS POSSIBLE AS  
WELL...  
   
..RAIN AND THUNDERSTORMS EXPECTED ACROSS THE GULF COAST STATES
 
 
THE WESTERN U.S. WILL CONTINUE TO HAVE ACTIVE WEATHER THROUGHOUT  
THE MIDDLE OF THE WEEK, AS AN UPPER-LEVEL LOW SPINS OFF THE  
PACIFIC NORTHWEST COAST AND ADDITIONAL UPPER-LEVEL ENERGY PASSES  
THROUGH ON TUESDAY NIGHT AND WEDNESDAY. PRECIPITATION WILL FALL AS  
RAIN ALONG THE NORTHERN CALIFORNIA COAST, AND HEAVY RAIN IS  
LIKELY. A SLIGHT RISK OF EXCESSIVE RAINFALL IS IN PLACE ON TUESDAY  
AND TUESDAY NIGHT THERE, INCLUDING FOR THE SAN FRANCISCO BAY AREA,  
BEFORE THE MOISTURE PLUME IS PUSHED SOUTHWARD BY A COLD FRONTAL  
PASSAGE BY WEDNESDAY MORNING. HIGHER ELEVATIONS ARE EXPECTING  
MULTIPLE FEET OF SNOW--THE SIERRA NEVADA HAS AN ADDITIONAL 2 TO 4  
FEET OF SNOW IN THE FORECAST THROUGH WEDNESDAY NIGHT, WHILE THE  
SHASTA RANGE, SAWTOOTH MOUNTAINS, AND THE TETONS/WIND RIVER  
MOUNTAINS COULD ALL SEE 1 TO LOCALLY 3 FEET OF SNOW OVER THE NEXT  
COUPLE OF DAYS.  
 
A COUPLE OF SURFACE HIGH PRESSURE SYSTEMS WILL MAKE THEIR WAY  
THROUGH THE NORTHERN TIER OF THE CONUS, BRINGING BITTERLY COLD AIR  
WITH THEM. HIGH TEMPERATURES OF 20 TO 40 DEGREES BELOW AVERAGE ARE  
FORECAST ACROSS THE NORTHERN/CENTRAL PLAINS AND INTO THE UPPER  
MIDWEST, WITH POCKETS OF MORE THAN 40 DEGREES BELOW AVERAGE IN  
MONTANA ON TUESDAY. WIND CHILL ADVISORIES ARE IN EFFECT THROUGH  
TUESDAY MORNING IN PARTS OF THE NORTHERN PLAINS AND UPPER MIDWEST.  
A STRONG COLD FRONT WILL SPREAD COLD TEMPERATURES INTO PARTS OF  
THE SOUTHERN PLAINS AS WELL, THOUGH JUST TO THE SOUTH,  
TEMPERATURES OF 5 TO 15 DEGREES ABOVE AVERAGE ARE EXPECTED IN  
TEXAS AND INTO THE SOUTHEASTERN U.S. ALONG WITH THE COLD AIR TO  
THE NORTH, SOME LIGHT TO MODERATE SNOW IS ALSO POSSIBLE AS  
UPPER-LEVEL ENERGY TRAVERSES ACROSS THE REGION. SNOW IS EXPECTED  
TO SPREAD FROM THE NORTHERN PLAINS TUESDAY INTO THE UPPER MIDWEST  
AND UPPER GREAT LAKES TUESDAY NIGHT, AND INTO THE LOWER GREAT  
LAKES AND NORTHEAST ON WEDNESDAY. A SWATH OF 4 TO 6 INCHES OF SNOW  
IS EXPECTED, WITH LOCALLY HIGHER AMOUNTS.  
 
AS A WARM FRONT APPROACHES AND LINGERS NEAR THE GULF COAST, THE  
FLOW OF MOISTURE WILL RETURN, AND SHOWERS AND THUNDERSTORMS ARE  
FORECAST TO OVERSPREAD THE GULF COAST STATES OVER THE NEXT COUPLE  
OF DAYS. THERE IS A MARGINAL RISK OF SEVERE WEATHER ACROSS THE  
CENTRAL GULF COAST TODAY, ACCORDING TO THE STORM PREDICTION  
CENTER. RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE EXPECTED. FARTHER  
NORTH, SOME LIGHT FREEZING RAIN IS POSSIBLE FOR PORTIONS OF THE  
SOUTHERN/CENTRAL PLAINS AND THE MIDDLE MISSISSIPPI VALLEY.  
 
TATE  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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