Tornado and Flash-Flood Threat Shifts From Texas Into Louisiana as Squall Line Advances Toward Mississippi

Overview

• SPC issued Tornado Watch 639 for northern and central Louisiana and parts of east-central and southeast Texas through 1 a.m. CST, citing a couple of tornadoes, damaging winds up to 70 mph and isolated hail.
• A mature line of storms over eastern Texas into northern Louisiana is expected to push east-northeast overnight, with embedded supercells and bowing segments posing tornado and damaging-wind risks as it nears western Mississippi.
• Earlier Tornado Watch 638 covered east-central and southeast Texas into extreme west-central Louisiana, where forecasters noted a few tornadoes were likely during the afternoon and evening.
• WPC reports training storms producing 1–2 inches per hour with localized 2–3+ inch bursts, with flash flooding possible from east-central and northeast Texas into western and northern Louisiana, southern Arkansas and into Mississippi.
• SPC highlighted radar-indicated rotation with a supercell near the northern Houston area earlier, and warned that low-level jet strengthening and a nearby warm front keep isolated tornado potential in play this evening.