462  
FXUS01 KWBC 160800  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
259 AM EST FRI FEB 16 2018  
 
VALID 12Z FRI FEB 16 2018 - 12Z SUN FEB 18 2018  
 
...HEAVY RAINFALL COULD BRING FLOODING TO PARTS OF THE OHIO VALLEY  
AND NORTHEAST...  
 
...WARM TEMPERATURES EXPECTED ACROSS THE EASTERN U.S. BEFORE A  
STRONG COLD FRONT SWEEPS EASTWARD...  
 
...ACTIVE WEATHER EXPECTED FOR THE PACIFIC WEST AND NORTHERN  
ROCKIES...  
 
RATHER WARM TEMPERATURES ARE IN STORE FOR THE EASTERN U.S. AS  
WARM, MOIST AIR LIFTS NORTHWARD. SEVERAL LOCATIONS ARE FORECAST TO  
HAVE AFTERNOON HIGHS NEARING 30 DEGREES ABOVE NORMAL FOR  
MID-FEBRUARY. THIS MOISTURE WILL INTERACT WITH A COLD FRONT  
SWEEPING THROUGH THE OHIO/TENNESSEE VALLEYS AND MID-ATLANTIC AND  
WILL GENERATE SHOWERS AND THUNDERSTORMS ALONG THE BOUNDARY.  
PRECIPITATION WILL SPAN FROM THE SOUTHERN PLAINS TO THE NORTHERN  
MID-ATLANTIC, WITH THE HIGHEST AMOUNTS LIKELY CONCENTRATING OVER  
THE EASTERN OHIO VALLEY/NORTHERN APPALACHIANS. THIS REGION WILL  
HAVE AN INCREASED RISK FOR FLOODING THIS WEEKEND; THEREFORE A  
SLIGHT RISK OF EXCESSIVE RAINFALL HAS BEEN ISSUED.  
 
AS THE FRONT PUSHES SOUTH, COVERAGE OF LIGHTER RAINFALL WILL  
INCREASE ACROSS THE SOUTHEAST AND THE CAROLINAS. THE AIRMASS  
ACROSS THE CENTRAL U.S. WILL COOL TO SLIGHTLY BELOW AVERAGE IN THE  
WAKE OF THE FRONTAL PASSAGE.  
 
MUCH OF THE PACIFIC NORTHWEST AND INTERMOUNTAIN WEST WILL BE IN AN  
ACTIVE WET PATTERN AS MULTIPLE UPPER LEVEL DISTURBANCES PASS  
THROUGH. SHOWERS AND HIGHER ELEVATION SNOW WILL INCREASE THROUGH  
THE DAY TODAY AS A PACIFIC FRONT PUSHES INLAND. THIS PRECIPITATION  
WILL CONTINUE INTO THE WEEKEND AS MULTIPLE SYSTEMS MOVE ACROSS  
THESE REGIONS. HEAVY SNOW IS EXPECTED ALONG THE WASHINGTON  
CASCADES WHERE THERE ARE WINTER WEATHER ADVISORIES IN EFFECT  
MOSTLY ON FRIDAY.  
 
CAMPBELL  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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