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Flash Flood Guidance
Issued by NWS
Issued by NWS
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056 AWUS01 KWNH 052201 FFGMPD WVZ000-OHZ000-060100- Mesoscale Precipitation Discussion 0568...Corrected NWS Weather Prediction Center College Park MD 601 PM EDT Fri Jul 05 2024 Corrected for Headline- Areas Affected Areas affected...Western West Virginia & Southeast Ohio Concerning...Heavy rainfall...Flash flooding likely Valid 052159Z - 060100Z SUMMARY...Flash flooding likely as storms that have a history of producing 3 inch/hour rainfall rates move over a portion of western West Virginia with FFGs as low as 1.5 in/hour. DISCUSSION...A small but very potent slow moving line of storms has developed along the Ohio River between Ohio and West Virginia ahead of an upper level shortwave, evident on water vapor imagery. The storms have been growing upscale but will be moving into an area hit by some storms as recently as yesterday. PWATs ahead of the storms are as high as 2 inches with SBCAPE as high as 2,500 J/kg. Thus, all of the ingredients are in place for the storms to remain strong as they track northeast up the Ohio River. While CAMs seem to have the storms resolved in the right place, they are not doing well with the storm motion...as recent radar imagery shows they`re generally moving northeast along the Ohio River, rather than east into West Virginia as most of the CAMs guidance shows. Expect they will maintain themselves for the next few hours as all the ingredients necessary for the storms` maintenance remain in place along their track. Later this evening, loss of daytime heating should result in the storms` weakening. Wegman ...Please see www.wpc.ncep.noaa.gov for graphic product... ATTN...WFO...PBZ...RLX... ATTN...RFC...OHRFC...NWC... LAT...LON 39918083 39538063 39108099 38498164 38538236 39808143