Flash Flood Warning Issued for Brazoria and Matagorda Counties, TX
This alert is no longer in effect.
NOAA issued it on June 1, 2026, 2 months 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 southeastern Brazoria County and east central Matagorda County until 11:15 AM CDT on May 20.
Read this weather record in 30 seconds
- Record type
- Flash Flood Warning
- Affected area
- Southeastern Texas
- Issued
- June 1, 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 2 months 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 2026-05-20T09:26:00-05:00 until 2026-05-20T11:15:00-05:00. Severity: Severe. Urgency: Immediate. Certainty: Likely.
Affected Areas
Southeastern Brazoria County in southeastern Texas and East Central Matagorda County in southeastern Texas. Specific locations include Lake Jackson, southern Angleton, Freeport, Clute, Surfside Beach, Richwood, Brazoria, Jones Creek, Oyster Creek and Sargent.
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
At 9:26 AM CDT, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain. Between 4 and 8 inches of rain have fallen. Expected rainfall rate is 1 to 1.5 inches in 1 hour. Additional rainfall amounts of 1 to 2 inches are possible. Flash flooding is ongoing or expected to begin shortly.
Timeline
Alert effective May 20 at 9:26 AM CDT and expires May 20 at 11:15 AM 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 (1,090 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to June 1, 2026.
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