New Tornado Watch Coming Shortly

SUMMARY… The severe threat continues across Tornado Watches 573 and 574, and is expected to continue into the overnight hours. A new Tornado Watch will be issued before 05Z to replace watches 573-574 and cover additional area downstream into central Alabama.

DISCUSSION… Supercells continue to show transient but strong low-level rotation across portions of western AL, with a TDS recently indicated on a storm in the Greene/Hale County area. These storms are persisting in a highly sheared environment, with regional VADs and 04Z mesoanalysis showing large, curved hodographs and 250-400 effective SRH. Low-level moisture and overall buoyancy becomes limited with eastward extent, though 500-1000 J/kg MLCAPE is in place across western AL, and the better low-level moisture (and MLCAPE) may slowly drift eastward into central Alabama later tonight. Supercell structures with transient low-level rotation may continue to pose a threat for at least isolated tornadoes into the overnight hours. As such, both Tornado Watches 573-574 will be replaced with a new Tornado Watch by 05Z, with some downstream coverage also expected as central AL destabilizes.

Category: Alabama's Weather, ALL POSTS, Severe Weather