250  
FXUS01 KWBC 221853  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
152 PM EST THU FEB 22 2018  
 
VALID 00Z FRI FEB 23 2018 - 00Z SUN FEB 25 2018  
 
...ACTIVE WEATHER PATTERN CONTINUES WITH HEAVY RAIN ACROSS THE  
PLAINS AND OHIO VALLEY AND SNOW FOR PARTS OF THE MIDWEST...  
 
THE MAIN WEATHER STORY MAKING WEATHER HEADLINES FOR THE END OF THE  
WEEK WILL BE THE CONTINUED HEAVY RAINFALL AND STRONG THUNDERSTORMS  
FROM TEXAS TO THE OHIO VALLEY. THIS IS IN ASSOCIATION WITH A  
NEARLY STATIONARY FRONT THAT IS INTERCEPTING COPIOUS AMOUNTS OF  
DEEP MOISTURE FROM THE GULF OF MEXICO AND LEADING TO MULTIPLE  
ROUNDS OF HEAVY RAIN OVER ALREADY SATURATED SOILS FROM EASTERN  
TEXAS TO THE OHIO VALLEY. A MODERATE RISK OF EXCESSIVE RAINFALL  
CONTINUES FOR MANY OF THESE AREAS THROUGH SATURDAY WITH THE  
POTENTIAL FOR SEVERAL INCHES OF RAIN BY SATURDAY MORNING. FLASH  
FLOOD WATCHES ARE ALSO IN EFFECT.  
 
MUCH OF THE WEST WILL REMAIN IN A COLD AND UNSETTLED PATTERN  
THROUGH THE END OF THE WEEK COURTESY OF MULTIPLE SHORTWAVES  
DROPPING SOUTH AND REINFORCING THE BROAD UPPER LEVEL TROUGH OF LOW  
PRESSURE. SNOW WILL SPREAD ACROSS THE GREAT BASIN AND TO THE  
ROCKIES. SNOW WILL BE HEAVY AT TIMES ACROSS THE HIGHER TERRAIN IN  
NEVADA, UTAH, NORTHERN ARIZONA, AND THE COLORADO ROCKIES. THE COLD  
AIRMASS IN PLACE OVER THE REGION WILL KEEP AFTERNOON HIGHS  
GENERALLY 10 TO 20 DEGREES COOLER THAN AVERAGE FOR LATE FEBRUARY.  
THE OPPOSITE WILL BE THE CASE FOR THE DEEP SOUTH AND EXTENDING  
EASTWARD TO THE CAROLINAS AND FLORIDA, WITH WIDESPREAD HIGHS IN  
THE MID 70S TO MID 80S WITH ADDITIONAL RECORD HIGHS EXPECTED.  
 
D. HAMRICK  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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