942  
FXUS01 KWBC 120759  
PMDSPD  
 
SHORT RANGE FORECAST DISCUSSION  
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD  
359 AM EDT TUE JUN 12 2018  
 
VALID 12Z TUE JUN 12 2018 - 12Z THU JUN 14 2018  
 
...SEVERE THUNDERSTORMS POSSIBLE ACROSS THE CENTRAL PLAINS TODAY,  
EASTERN OHIO VALLEY AND THE NORTHEAST ON WEDNESDAY AND ACROSS THE  
NORTHERN PLAINS ON THURSDAY...  
 
...HEAVY RAIN AND FLASH FLOODING POSSIBLE FOR PORTIONS OF THE OHIO  
VALLEY TODAY AND UPPER MIDWEST ON WEDNESDAY...  
 
...WARMING TREND EXPECTED FOR THE INTERIOR NORTHWEST AND NORTHERN  
MID-ATLANTIC REGION INTO MID-WEEK...  
 
SCATTERED TO WIDESPREAD THUNDERSTORMS CAN BE EXPECTED ALONG AND  
EAST OF AN AREA OF LOW PRESSURE AND ASSOCIATED COLD FRONT THAT IS  
MOVING THROUGH THE CENTRAL U.S. THIS FRONTAL BOUNDARY ALONG WILL  
MOISTURE FEEDING NORTH FROM THE GULF OF MEXICO WILL BE THE FOCUS  
FOR CONTINUED CONVECTION OVER THE NEXT COUPLE OF DAYS. THE  
FORECAST SHOWS 1 TO 3 INCHES OF RAIN THROUGH WEDNESDAY FOR THE  
OHIO VALLEY ALTHOUGH LOCALLY HIGHER AMOUNTS WILL BE POSSIBLE. THE  
STORM PREDICTION CENTER HAS IDENTIFIED AN SLIGHT RISK OF SEVERE  
STORMS FOR MUCH OF THE CENTRAL PLAINS TODAY AND FROM EASTERN  
OHIO/WEST VIRGINIA TO UPSTATE NEW YORK ON WEDNESDAY. AN ENHANCED  
RISK SURROUNDED BY A SLIGHT RISK ENCOMPASSES MOST OF NORTH DAKOTA  
AND NORTHWEST MINNESOTA ON THURSDAY. A THREAT FOR TORNADOES, LARGE  
HAIL AND STRONG WINDS WILL BE PRESENT IN ADDITION TO FLASH  
FLOODING FOR THE DESCRIBED AREAS. PLEASE REFER TO SPC WEBPAGE FOR  
ADDITIONAL DETAIL ON THE RISKS FOR SEVERE WX AND WPC WEBPAGE FOR  
THE RISK OF EXCESSIVE RAINFALL.  
 
HIGH PRESSURE WILL CONTINUE TO SETTLE SOUTHWARD ALONG THE  
MID-ATLANTIC COAST THROUGH TOMORROW, BEFORE WEAKENING AND  
REFORMING FARTHER NORTH ON WEDNESDAY. WHILE TEMPERATURES ARE  
FORECAST TO REMAIN 5 TO 10 DEGREES BELOW AVERAGE FOR THE  
MID-ATLANTIC REGION ON TUESDAY, HIGH TEMPERATURES SHOULD RISE A  
BIT ABOVE AVERAGE FOR PORTIONS OF THE MID-ATLANTIC REGION WITH  
SOME 90S EXPECTED.  
 
HIGH PRESSURE BUILDING IN OVER THE PACIFIC NORTHWEST AND  
INTERMOUNTAIN REGION WILL RESULT IN A WARMING TREND THROUGH THE  
MIDDLE OF THE WEEK ALONG WILL MOSTLY DRY CONDITIONS. AFTERNOON  
TEMPERATURES FROM MONTANA INTO IDAHO WILL RANGE FROM THE 70S TO  
90S, WHICH IS ROUGHLY 10 DEGREES ABOVE MID-JUNE AVERAGES. LIGHT  
RAIN WILL BEGIN MOVING INTO THE PACIFIC NORTHWEST LATE TUESDAY  
INTO WEDNESDAY AS A PACIFIC FRONT APPROACHED THE COAST.  
 
CAMPBELL/OTTO  
 
GRAPHICS AVAILABLE AT  
WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP  

 
 
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