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| Mesoscale Discussion 2288 | |
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Mesoscale Discussion 2288 NWS Storm Prediction Center Norman OK 0853 PM CST Thu Dec 26 2024 Areas affected...Louisiana Concerning...Tornado Watch 716... Valid 270253Z - 270430Z The severe weather threat for Tornado Watch 716 continues. SUMMARY...Some tornado risk continues across Louisiana this evening. DISCUSSION...Strongly dynamic short-wave trough is ejecting across the Arklatex this evening. In response to this feature, LLJ is strengthening across northern LA. Strong low-level warm advection appears to be mostly responsible for a corridor of strong-severe convection that is propagating east across ww716. Within this corridor, a few longer-lived supercells are embedded. One, potentially tornadic supercell, is moving northeast across Rapides Parish. Latest diagnostic data suggests this is near the northern limits of surface-based buoyancy, but very strong shear may allow this updraft to persist a bit farther downstream before it weakens appreciably. While a few supercells may spread just east of the watch into western portions of JAN/LIX CWA, latest thinking is updrafts should gradually weaken as they approach the MS delta region. ..Darrow.. 12/27/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...JAN...LCH...SHV... LAT...LON 29729416 32159338 32159185 29739266 29729416 |
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