Flash Flood Warning Issued for Brazoria, Galveston, Harris Counties TX
This alert is no longer in effect.
NOAA issued it on July 27, 2026, 4 weeks ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
NWS Houston/Galveston has issued a Flash Flood Warning for northeastern Brazoria, northwestern Galveston, and Harris counties until 7:15 PM CDT.
Read this weather record in 30 seconds
- Record type
- Flash Flood Warning
- Affected area
- Southeastern Texas
- Issued
- July 27, 2026
- Issuing authority
- NWS Houston/Galveston TX
Flood notices turn on location and timing. Treat the named area as this record's scope; do not assume nearby counties, parishes, or waterways were included.
Record status: historical. It was issued 4 weeks ago; use the issuing agency's live warning service for current conditions in Southeastern Texas.
Alert Details
Flash Flood Warning issued by NWS Houston/Galveston TX. Effective from June 20, 2026 at 4:17 PM CDT until June 20, 2026 at 7:15 PM CDT. Severity: Severe. Urgency: Immediate. Certainty: Likely.
Affected Areas
Northeastern Brazoria County, northwestern Galveston County, and Harris County in southeastern Texas. Specific locations 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.
What You Should Do
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.
Expected Conditions
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.
Timeline
Alert effective June 20, 2026 at 4:17 PM CDT and expires June 20, 2026 at 7:15 PM CDT.
Original source: NOAA Official Notice ↗
Related Weather Alerts
All Weather Alerts →Nationwide notices with similar length or severity timing 8
Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,187 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to July 27, 2026.
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