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| Mesoscale Discussion 1989 | |
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Mesoscale Discussion 1989 NWS Storm Prediction Center Norman OK 0457 PM CDT Sun Aug 25 2024 Areas affected...portions of eastern Utah into southern Wyoming and western Colorado Concerning...Severe Thunderstorm Watch 646... Valid 252157Z - 252330Z The severe weather threat for Severe Thunderstorm Watch 646 continues. SUMMARY...The severe threat continues across Severe Thunderstorm Watch 646. Severe hail and wind remain the main threats with the stronger storms. DISCUSSION...Clusters of supercells and multicells have organized across eastern portions of the Great Basin this afternoon amid seasonally impressive mid-level flow and associated deep-layer shear (bulk effective shear values exceeding 60 kts in spots). Given over 1500 J/kg MLCAPE in place (with well over 100 J/kg in the 0-3 km layer alone), organized storm modes, including supercells, should persist through the afternoon. Thunderstorms, and an associated severe hail/wind threat, should continue to progress eastward across Severe Thunderstorm Watch 646 in tandem with the eastward-tracking 500 mb trough. ..Squitieri.. 08/25/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...BOU...CYS...RIW...GJT...SLC... LAT...LON 37470834 37160959 37221024 37531045 38511002 39650958 40860923 41670840 42130768 42170684 41350651 39740709 38280781 37470834 |
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