208  
FXUS01 KWBC 231957  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
256 PM EST FRI FEB 23 2018  
 
VALID 00Z SAT FEB 24 2018 - 00Z MON FEB 26 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 WEEKEND  
WILL BE THE CONTINUED HEAVY RAINFALL AND STRONG THUNDERSTORMS FROM  
THE SOUTHERN PLAINS 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 STRONG LOW PRESSURE SYSTEM  
WILL DEVELOP OVER THE CENTRAL PLAINS AND THEN TRACK TOWARDS THE  
MIDWEST AND GREAT LAKES, PROVIDING ANOTHER ROUND OF HEAVY RAIN.  
SEVERE THUNDERSTORMS WILL ALSO BE POSSIBLE IN THE WARM SECTOR OF  
THIS LOW PRESSURE SYSTEM FROM THE CENTRAL GULF COAST TO SOUTHERN  
INDIANA. A HIGH RISK OF EXCESSIVE RAINFALL IS EXPECTED ON  
SATURDAY FROM ARKANSAS TO KENTUCKY WITH THE POTENTIAL FOR SEVERAL  
INCHES OF RAIN BY SUNDAY MORNING. FLASH FLOOD WATCHES ARE ALSO IN  
EFFECT.  
 
MUCH OF THE WEST WILL REMAIN IN A COLD AND UNSETTLED PATTERN  
THROUGH THE WEEKEND COURTESY OF MULTIPLE SHORTWAVES DROPPING SOUTH  
AND REINFORCING THE BROAD UPPER LEVEL TROUGH OF LOW PRESSURE.  
WIDESPREAD SNOW IS EXPECTED FOR THE CASCADES AND NORTHERN ROCKIES.  
ANOTHER SWATH OF ACCUMULATING SNOW IS IN THE FORECAST FROM  
NEBRASKA TO NORTHERN MICHIGAN ON THE NORTHWEST SIDE OF THE  
DEVELOPING CENTRAL U.S. SURFACE LOW. 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 POSSIBLE.  
 
D. HAMRICK  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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