Mesoscale Discussion 0567 NWS Storm Prediction Center Norman OK 0713 PM CDT Wed Apr 26 2017 Areas affected...central and northeast IN into northwest OH Concerning...Severe Thunderstorm Watch 165... Valid 270013Z - 270115Z The severe weather threat for Severe Thunderstorm Watch 165 continues. SUMMARY...Severe hail and wind may persist another 1-2 hours across the watch area. However, a gradual weakening trend is expected as inhibition increases with loss of daytime. DISCUSSION...Widely scattered strong to severe thunderstorms will continue to track northeast from central IN toward northeast IN/northwest OH. These storms are in a zone of modest MUCAPE in the 500-1000 J/kg range with 50+ kt effective shear. This will maintain activity for several hours, but as inhibition increases with loss of heating, and as storms move into region of poorer low-level moisture, gradual weakening is expected. In fact, latest 7km CAPPI trends indicate this weakening is already underway. Expect the severe threat to persist another 1-2 hours before storms weaken. The main threat will continue to be hail and strong winds. A downstream watch is not expected. ..Leitman.. 04/27/2017 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...CLE...DTX...IWX...IND... LAT...LON 41758569 41728382 39518597 40708673 41758569Read more
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