⚠️ Flash Flood Warning – Brazoria, TX; Galveston, TX; Harris, TX – Saturday, June 20, 2026

Flash Flood Warning issued June 20 at 4:17PM CDT until June 20 at 7:15PM CDT by NWS Houston/Galveston TX

Details

FFWHGX

The National Weather Service in League City has issued a

* Flash Flood Warning for…
Northeastern Brazoria County in southeastern Texas…
Northwestern Galveston County in southeastern Texas…
Harris County in southeastern Texas…

* Until 715 PM CDT.

* At 417 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 2.5 inches of
rain have fallen over areas that have already received heavy
rainfall. Flash flooding is ongoing or expected to begin shortly.

HAZARD…Flash flooding caused by thunderstorms.

SOURCE…Radar.

IMPACT…Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include…
Pasadena, Pearland, League City, Texas City, Friendswood, La
Porte, Deer Park, Alvin, Dickinson, South Houston, La Marque,
Santa Fe, Seabrook, Webster, Manvel, Kemah, Clear Lake, South Belt
/ Ellington, Greater Hobby Area and Nassau Bay.

Instructions

Turn around, don’t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be aware of your surroundings and do not drive on flooded roads.

This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.