MD 0305 CONCERNING TORNADO WATCH 56… FOR PORTIONS OF FAR EAST TX INTO FAR NORTHWESTERN LA
Mesoscale Discussion 0305 NWS Storm Prediction Center Norman OK 0108 AM CDT Tue Mar 22 2022 Areas affected...Portions of far east TX into far northwestern LA Concerning...Tornado Watch 56... Valid 220608Z - 220745Z The severe weather threat for Tornado Watch 56 continues. SUMMARY...The greatest severe threat in the near term, including the potential for a tornado, should focus across parts of far east Texas into northwestern Louisiana. DISCUSSION...Recent radar imagery shows a supercell with low-level rotation embedded within a small line segment over far east TX, moving into far northwestern LA. 0-1 km shear greater than 400 m2/s2 remains very favorable for continued updraft rotation per recent VWP from KSHV. The airmass across this small area should also be sufficiently unstable to support surface-based storms for at least the next 1-2 hours, with MLCAPE around 500-1500 J/kg. Current expectations are for this convection to pose a continued tornado and damaging wind threat in the near term as it spreads slowly eastward given the enhanced winds associated with a 50-60+ kt southerly low-level jet. The airmass downstream across north-central LA will attempt to destabilize in the next few hours, and a severe threat may persist with eastward extent across LA beyond 08Z. ..Gleason.. 03/22/2022 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...SHV... LAT...LON 31949457 32299435 32739424 32929370 32909327 32529320 32149350 31929391 31949457