464  
FXUS01 KWBC 210800  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
300 AM EST WED FEB 21 2018  
 
VALID 12Z WED FEB 21 2018 - 12Z FRI FEB 23 2018  
 
...COLD TEMPERATURES ACROSS THE WEST AND WARM ACROSS THE EAST WITH  
A CONTINUING ACTIVE WET PATTERN ACROSS THE CENTRAL U.S...  
 
EXCESSIVE RAIN AND AREAL FLOODING WILL CONTINUE FROM PORTIONS OF  
THE SOUTHERN PLAINS TO THE GREAT LAKES REGION AS WARM GULF  
MOISTURE LIFTS NORTHWARD ALONG A SLOW MOVING FRONTAL BOUNDARY.  
COLD AIR BEHIND THE FRONT WILL ALLOW FOR SNOW,OR POSSIBLE A WINTRY  
MIX/ FREEZING RAIN. NUMEROUS WINTER WEATHER ADVISORIES ARE IN  
EFFECT FROM CENTRAL TEXAS TO ILLINOIS. MINOR FLOODING IS BEING  
OBSERVED ACROSS WESTERN PORTIONS OF THE TENNESSEE AND  
MID-MISSISSIPPI VALLEYS. SEVERAL LOCATIONS ACROSS LOWER GREAT  
LAKES/WESTERN OHIO VALLEY ALREADY HAVE MINOR TO MODERATE FLOODING,  
ANY ADDITIONAL RAINFALL WILL LIKELY EXACERBATE THE SITUATION.  
 
TEMPERATURES ACROSS MUCH OF THE EASTERN SEABOARD WILL BE  
ABOVE-TO-WELL ABOVE NORMAL FOR LATE FEBRUARY. WIDESPREAD HIGHS IN  
THE 70S WITH SOME LOWER 80S ARE EXPECTED, AND THIS HAS THE  
POTENTIAL TO SET RECORD HIGHS. THESE LATE SPRING-LIKE TEMPERATURES  
WILL BE SHORT-LIVED. THE STRONG FRONT OVER THE CENTRAL U.S. WILL  
FINALLY CROSS THE CENTRAL/NORTHERN APPALACHIANS AND COLD AIR WILL  
SPILL INTO THE NORTHEAST AND MID-ATLANTIC REGIONS BY THE END OF  
THE WEEK.  
 
UPPER-LEVEL ENERGY WILL MOVE SOUTHWARD THOUGH THE PACIFIC  
NORTHWEST WILL SPREAD SNOW SPREAD FROM THE COAST INLAND AND SOUTH  
TO NORTHERN CALIFORNIA. MUCH OF THE WEST WILL HAVE TEMPERATURES  
WARMER THAN SEASONAL AVERAGE  
 
CAMPBELL  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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