Fast-Moving Texas Thunderstorms Bring Local Flood Threat Toward Louisiana

Forecasters expect brief heavy bursts to add up where storms repeatedly track the same path.

Overview

Elevated storms over south-central and southeast Texas are spreading toward southwestern Louisiana on Friday, and forecasters see a low-end flash flood risk in a few spots.
Radar estimates show 1 to 3 inches fell in the past six hours from San Antonio to north of Houston as lines raced east-northeast along the I-10 corridor at 40 to 50 mph.
The Weather Prediction Center projects additional pockets of 2 to 3 inches through 4 p.m. local time, with hourly peaks near 2 inches possible near the upper Texas and southwest Louisiana coasts.
The Storm Prediction Center reports occasional elevated supercells north of a stalled front, with isolated hail up to 1.5 to 2.5 inches and gusts of 55 to 70 mph, and it puts watch odds at 20 percent.
A deep plume of Gulf and Pacific moisture sits over the region, but most instability is above the freezing level, which favors hail and faster runoff over efficient rain, so flooding should stay isolated and hit urban streets and Hill Country creeks first.