Flash Flood Warning Issued for Brazoria and Matagorda Counties Including Lake Jackson Freeport and Angleton Until Wednesday May 20
TEXAS — A Flash Flood Warning has been issued for Brazoria and Matagorda counties in Southeast Texas until 11:15 AM Wednesday, May 20, 2026, with heavy rainfall producing dangerous flooding conditions across the warned area. Radar at 9:27 AM shows an expansive area of moderate to heavy rainfall blanketing the Lake Jackson, Freeport, Angleton, and Sargent corridor with deep red and orange returns indicating intense rainfall rates currently impacting the region. Do not attempt to drive across any flooded roadway — turn around and do not drown.
Flash Flood Warning Covers Brazoria and Matagorda Counties Through 1115AM
The Flash Flood Warning in effect through 11:15 AM covers the entirety of Brazoria and Matagorda counties, encompassing communities including Lake Jackson, Freeport, Angleton, West Columbia, Sargent, and Bay City. Heavy rainfall rates currently being recorded across this corridor are producing rapid water rises on roadways and in low-lying areas throughout the warned zone.
Residents across both counties should remain off roadways and avoid any areas prone to flooding until the warning expires and water levels recede.
Heavy Rainfall Blanketing Lake Jackson Freeport and Angleton Corridor on Radar
The ABC13 Alert Radar at 9:27 AM shows a large area of moderate to heavy rainfall stretching across the Brazoria and Matagorda county region, with the most intense returns concentrated near Lake Jackson, Freeport, and the Angleton area. Rainfall rates in the deepest red zones are capable of producing flash flooding within minutes in vulnerable areas.
Anyone currently in a flooded area should move to higher ground immediately and not wait for conditions to worsen before taking action.
Never Drive Through Flooded Roads Regardless of Water Depth
The most dangerous and deadly decision anyone can make during a Flash Flood Warning is attempting to drive through flooded roadways. Just six inches of fast-moving water can knock a person down and two feet of water can carry away most vehicles, regardless of their size.
Stay off roads in Brazoria and Matagorda counties until the warning expires at 11:15 AM and all flood waters have fully receded from roadway surfaces. Stay with NapervilleLocal.com for the latest weather updates and local forecast coverage.
I’ve lived in Naperville long enough to see how quickly our community changes — from new developments downtown to sudden shifts in our Midwest weather. Reporting on Naperville news and daily forecasts gives me the chance to keep neighbors informed about what really matters. My goal is simple: deliver clear, timely updates so you always know what’s happening in our city and what to expect from the skies above.