The risk for a brief QLCS tornado might persist for another hour or two in a narrow corridor across east-central AL.
A low-topped narrow squall line of showers produced a TDS around 0700Z in southern Jefferson County. This portion of the squall line appears to be co-located with the surface cyclone that is expected to continue east into northern GA through daybreak. A confined plume of 63-64 F surface dew points just ahead of the cyclone appears to be sufficient to yield scant surface-based buoyancy with MLCAPE of 100-200 J/kg per 06Z RAP soundings. In the presence of extreme low-level SRH (0-1 km above 500 m2/s2), the risk for another brief tornado is not entirely negligible where surface winds can remain southerly in a narrow corridor ahead of the cyclone. Surface winds that are more south-southwesterly across the warm sector will minimize the risk farther south.
About the Author (Author Profile)
Scott Martin is an operational meteorologist, professional graphic artist, musician, husband, and father. Not only is Scott a member of the National Weather Association, but he is also the Central Alabama Chapter of the NWA president. Scott is also the co-founder of Racecast Weather, which provides forecasts for many racing series across the USA. He also supplies forecasts for the BassMaster Elite Series events including the BassMaster Classic.