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| Mesoscale Discussion 2010 | |
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Mesoscale Discussion 2010 NWS Storm Prediction Center Norman OK 1241 AM CDT Tue Aug 27 2024 Areas affected...southeast South Dakota...southwest Minnesota...and northwest Iowa. Concerning...Severe Thunderstorm Watch 654... Valid 270541Z - 270715Z The severe weather threat for Severe Thunderstorm Watch 654 continues. SUMMARY...The threat for severe storms will continue early this morning across southeast South Dakota, southwest Minnesota, and northwest Iowa. DISCUSSION...A few storms along the remnant outflow boundary from the earlier MCS have strengthened across eastern South Dakota in the last hour. This is a trend which may continue over the next 1 to 2 hours as this boundary and ongoing storms advance toward an increasingly unstable airmass. Given the strengthening which has already occurred amid ~1000 J/kg MLCAPE and mid to upper 60s dewpoints, expect additional strengthening as storms move into low 70s dewpoints and only weak inhibition north of the surface low across southeast South Dakota, northwest Iowa, and potentially southwest Minnesota. Severe gusts will be the primary threat, but at least some large-hail threat will persist as any storms remain more discrete/supercellular. Eventually, storms will move ahead of the better shear (near the eastern bounds of watch 654) which will likely bring an end to the more organized severe weather threat. However, in the interim, a favorable environment remains for a few potentially potent severe storms. ..Bentley.. 08/27/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...MPX...FSD...OAX...ABR... LAT...LON 42719794 42979819 43819821 44419793 44599718 44659602 44499560 44179503 43509493 42909501 42759571 42719794 |
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