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Mesoscale Discussion 1762 | |
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Mesoscale Discussion 1762 NWS Storm Prediction Center Norman OK 0530 AM CDT Wed Jul 31 2024 Areas affected...far southeast IA/northeast MO to central IL Concerning...Severe Thunderstorm Watch 577... Valid 311030Z - 311230Z The severe weather threat for Severe Thunderstorm Watch 577 continues. SUMMARY...A threat for strong to isolated severe gusts from 55-70 mph should spread east-southeast of WW 577 into central Illinois. An additional severe thunderstorm watch is being considered. DISCUSSION...A cluster of strong to locally severe storms will likely progress east-southeast of WW 577, as it moves from the IA/MO/IL border area into central IL. Measured ASOS/AWOS gusts thus far have been up to 63 mph in Ottumwa, IA, with a personal weather station recently measuring 67 mph in far southeast IA. Despite the relatively short nature of the cluster's embedded line segment, the cold IR temps suggest that deep convective cores should persist along the MLCAPE gradient. While most gusts will probably remain sub-severe, a sufficient threat for severe gusts to around 70 mph should continue on an isolated basis through mid-morning. ..Grams/Guyer.. 07/31/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...ILX...LSX...DVN... LAT...LON 40999132 40718947 40188891 39538903 39368962 39599081 39879154 40209194 40999132 |
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