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2014 Mid-Atlantic Severe Discussion Thread


Kmlwx

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MD 637: http://www.spc.noaa.gov/products/md/md0637.html

 

severe watch likely coming....

 

Mesoscale Discussion 637 < Previous MD mcd0637.gif
   MESOSCALE DISCUSSION 0637   NWS STORM PREDICTION CENTER NORMAN OK   0110 PM CDT WED MAY 21 2014   AREAS AFFECTED...NRN AND ERN VA...MD   CONCERNING...SEVERE POTENTIAL...WATCH LIKELY    VALID 211810Z - 212045Z   PROBABILITY OF WATCH ISSUANCE...80 PERCENT   SUMMARY...SCATTERED THUNDERSTORMS ARE EXPECTED TO FORM OVER THE NEXT   FEW HOURS...WITH SEVERE HAIL AND WIND POSSIBLE.   DISCUSSION...STRONG HEATING CONTINUES OVER VA AND SRN MD WITH   TEMPERATURES WELL INTO THE 80S F ALONG WITH LOWER 60S F DEWPOINTS.   THIS HAS ERODED INHIBITION WITH CELLS BEGINNING TO FORM OVER N CNTRL   VA AT 18Z. MEANWHILE...MIDLEVEL FLOW HAS INCREASED TO ABOUT 50   KT...CREATING FAVORABLY LONG HODOGRAPHS FOR SEVERE STORMS INCLUDING   SUPERCELLS. LOW-LEVEL SHEAR IS RATHER WEAK FOR A TORNADO   THREAT...BUT SOME INCREASED SHEAR MAY EXIST ALONG THE FRONT ACROSS   FAR ERN VA/SRN MD. STORMS SHOULD CONTINUE TO DEVELOP OVER NRN   VA...THEN SPREAD SEWD ACROSS ERN VA AND MD.   ..JEWELL/HART.. 05/21/2014
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