348  
FXUS01 KWBC 140744  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
243 AM EST WED FEB 14 2018  
 
VALID 12Z WED FEB 14 2018 - 12Z FRI FEB 16 2018  
 
...A STRONG COLD FRONT WILL BRING SUBSTANTIALLY COLDER  
TEMPERATURES IN ITS WAKE FROM NORTH TO SOUTH THROUGH THE REMAINDER  
OF THE WORK WEEK...  
 
...FLOODING RAINFALL POSSIBLE FROM THE OHIO VALLEY INTO PORTIONS  
OF SOUTHWESTERN PENNSYLVANIA FOR THE SECOND HALF OF THURSDAY...  
   
..BENEFICIAL RAIN/SNOW FOR PARTS OF THE WEST
 
 
A STRONG COLD FRONT, CURRENTLY STRETCHING EAST TO WEST ACROSS  
SOUTHERN CANADA WILL REACH MONTANA AND NORTH DAKOTA THIS EVENING,  
BRINGING LIGHT SNOW A SHOT OF MUCH COLDER TEMPERATURES. TODAY'S  
HIGH TEMPERATURES ACROSS THE NORTH-CENTRAL U.S. ARE EXPECTED TO BE  
NEAR TO ABOUT 10 DEGREES ABOVE MID-FEBRUARY AVERAGES, BUT ON  
THURSDAY, HIGHS SHOULD FALL TO 20 TO 30 DEGREES BELOW AVERAGE FOR  
THE REGION.  
 
THE COLD FRONT WILL CONTINUE SOUTH AND EAST ON THURSDAY BUT  
LOCATIONS AHEAD OF THE BOUNDARY WILL SOUR INTO THE 60S AND 70S FOR  
MANY LOCATIONS FROM THE SOUTHERN AND CENTRAL PLAINS TO THE  
MID-ATLANTIC COAST. BY FRIDAY THOUGH, FOLKS FROM TEXAS TO THE  
MIDDLE MISSISSIPPI VALLEY WILL SEE HIGH TEMPERATURES 20 TO 40  
DEGREES COLDER COMPARED TO THURSDAY. THE WARM AIR AHEAD OF THE  
COLD FRONT WILL ALSO ALLOW MODIFIED MOISTURE FROM THE GULF OF  
MEXICO TO FLOW NORTHWARD, HELPING IN THE PRODUCTION OF SCATTERED  
SHOWERS TODAY FROM THE ARKLATEX INTO THE APPALACHIANS. A SECOND  
ROUND OF HEAVIER RAINFALL IS ANTICIPATED TO DEVELOP ON THURSDAY  
AFTERNOON ACROSS PORTIONS OF THE OHIO VALLEY INTO SOUTHWESTERN  
PENNSYLVANIA AND WEST VIRGINIA, SOME OF WHICH COULD CAUSE FLOODING  
GIVEN 2-DAY RAINFALL TOTALS OF 1-3 INCHES ARE EXPECTED ON AVERAGE  
THROUGH FRIDAY MORNING.  
 
ACROSS THE WESTERN U.S., A SERIES OF UPPER LEVEL DISTURBANCES WILL  
ALLOW MUCH OF THE REGION TO REMAIN UNSETTLED THROUGH THE REST OF  
THE WEEK. TEMPERATURES ALONG AND WEST OF THE CONTINENTAL DIVIDE  
WILL BE NEAR TO SLIGHTLY BELOW AVERAGE, WHICH IS A BIG CHANGE FROM  
THE RECENT ABOVE AVERAGE WARMTH SEEN OVER THE PAST COUPLE OF  
WEEKS. THESE SYSTEMS ARE NOT EXPECTED TO PRODUCE WIDESPREAD HEAVY  
PRECIPITATION, BUT LOWER ELEVATION RAIN AND MOUNTAIN SNOW SHOULD  
HELP TO PUT A SLIGHT DENT IN WIDESPREAD DROUGHT CONDITIONS  
CURRENTLY IN PLACE OVER THE SOUTHWEST AND PORTIONS OF THE SOUTHERN  
GREAT BASIN.  
 
OTTO  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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