486  
FXUS01 KWBC 061957  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
256 PM EST TUE FEB 06 2018  
 
VALID 00Z WED FEB 07 2018 - 00Z FRI FEB 09 2018  
 
...A SLIGHT RISK OF FLASH FLOODING IS IN EFFECT FOR THE LOWER  
MISSISSIPPI VALLEY THROUGH TUESDAY NIGHT...  
 
...WINTER WEATHER WILL IMPACT THE LOWER MISSISSIPPI VALLEY, OHIO  
VALLEY, AND NORTHEAST TUESDAY NIGHT AND WEDNESDAY...  
 
...SNOW CONTINUES FOR THE NORTHERN ROCKIES, SPREADING EASTWARD  
INTO THE NORTHERN PLAINS AND UPPER MISSISSIPPI VALLEY BY  
THURSDAY...  
 
THROUGH TONIGHT, WIDESPREAD RAIN AND THUNDERSTORMS ARE EXPECTED  
FOR EASTERN TEXAS THROUGH THE LOWER MISSISSIPPI VALLEY. THIS IS  
DUE TO THE COMBINATION OF PLENTY OF MOISTURE, UPPER-LEVEL ENERGY,  
AND A SURFACE LOW PRESSURE SYSTEM WITH SLOW MOVING FRONTS. SOME  
THUNDERSTORMS COULD CAUSE LOCALLY HEAVY RAIN AND EVEN FLASH  
FLOODING WHERE STORMS LINGER IN THE SAME AREA. A FEW STORMS COULD  
BE STRONG WITH SMALL HAIL AS WELL. RAIN AND THUNDERSTORMS WILL  
SPREAD INTO THE SOUTHEAST ON WEDNESDAY AS THE LOW AND COLD FRONT  
MOVE NORTHEAST, AND LOCALLY HEAVY RAIN AND A FEW STRONG STORMS ARE  
POSSIBLE.  
 
WINTER WEATHER IS FORECAST NORTH OF THE FRONTS AND SURFACE LOW  
WHERE COLD AIR IS IN PLACE AT THE GROUND. ACCUMULATING FREEZING  
RAIN IS POSSIBLE FOR PORTIONS OF THE LOWER MISSISSIPPI VALLEY AND  
STRETCHING INTO PARTS OF THE OHIO VALLEY, NORTHERN MID-ATLANTIC,  
AND NORTHEAST. SOME LOCATIONS ARE EXPECTED TO RECEIVE OVER A  
QUARTER INCH OF FREEZING RAIN, PARTICULARLY IN PORTIONS OF THE  
OHIO VALLEY AND CENTRAL APPALACHIANS. NORTH OF THE FREEZING RAIN  
THREAT, SNOW IS LIKELY. SOME SNOW WILL OCCUR FOR THE UPPER AND  
MIDDLE MISSISSIPPI VALLEY AND GREAT LAKES REGIONS, BUT THE  
HEAVIEST SNOW WILL BE LOCATED IN THE INTERIOR NORTHEAST, WHERE 6  
TO 10 INCHES OF SNOW IS FORECAST THROUGH WEDNESDAY NIGHT.  
 
OVER THE NEXT FEW DAYS, RAIN AND MAINLY SNOW WILL CONTINUE IN THE  
NORTHERN ROCKIES, AIDED BY A STATIONARY FRONT JUST EAST OF THE  
HIGHER TERRAIN OF THE ROCKIES. THE HIGHEST PEAKS COULD RECEIVE 1-2  
FEET OF SNOW OVER THE NEXT COUPLE OF DAYS. UPPER-LEVEL ENERGY WILL  
PUSH THIS FRONT A BIT SOUTHWARD ON WEDNESDAY NIGHT AND THURSDAY,  
AND THE FRONT WILL START TO BUILD EASTWARD AS WELL. NORTH OF THE  
FRONT, SNOW IS EXPECTED TO OVERSPREAD PORTIONS OF THE PLAINS,  
MISSISSIPPI VALLEY, AND GREAT LAKES BY THURSDAY.  
 
TEMPERATURE-WISE, THE WESTERN U.S. WILL CONTINUE TO BE WARM OVER  
THE NEXT FEW DAYS, PARTICULARLY BY THURSDAY WHEN TEMPERATURES WILL  
BE 10-20 DEGREES ABOVE AVERAGE. A FEW RECORD HIGHS COULD EVEN BE  
SET. THE CENTRAL U.S. WILL BE GENERALLY COOLER THAN AVERAGE, AND  
THE COOL AIR WILL SPREAD TO THE EASTERN U.S. BY THURSDAY AS THE  
COLD FRONT TRACKS EASTWARD.  
 
TATE  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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