Tropical Storm Edouard makes landfall in far southwest Louisiana, and produces flash flooding across southeast Texas
1-minute Mesoscale Domain Sector GOES-19 (GOES-East) Visible and Infrared Window images (above) showed Tropical Storm Edouard as it made landfall in far southwestern Louisiana at 1920 UTC on 01 September 2026. Plots of 1-minute GOES-19 GLM Flash Points highlighted the intermittent lightning activity associated with Edouard. Pulses of overshooting tops exhibited infrared brightness temperatures in the -75 to -80 C range (brighter white pixels embedded within dark black regions).
Edouard was moving through an environment of low deep-layer wind shear (below), a factor which favored intensification.
Sea Surface Temperatures across the northwestern Gulf of Mexico were also very warm (below) — and water temperatures just off the Gulf Coast (where Edouard intensified to a Tropical Storm shortly before making landfall) were 31 C.
An AMSR Microwave image at 1908 UTC (below) indicated that the eyewall of Edouard was not fully closed at that time.
A MIMIC Total Precipitable Water image at 2200 UTC (below) showed that significant moisture had already moved inland across southeast Texas as Edouard was making landfall.
1-minute GOES-19 Infrared Window images that included overlays of Flood Watch/Warning/Advisory polygons (below) displayed several Flash Flood Warnings (red polygons) and even a Flash Flood Emergency (bold red polygon). Nearly 18 inches of rainfall occurred across southeast Texas.