Flash Flood Warning Issued for Austin, Harris, and Waller Counties in Texas
This alert is no longer in effect.
NOAA issued it on April 12, 2026, 4 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.
A Flash Flood Warning is in effect for parts of southeastern Texas, including Austin, Harris, and Waller counties, until 7:45 PM CDT, due to heavy rainfall causing immediate flooding risks.
Read this weather record in 30 seconds
- Record type
- Flash Flood Warning
- Affected area
- Southeastern Texas
- Issued
- April 12, 2026
- Issuing authority
- NWS Houston Galveston
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 months ago; use the issuing agency's live warning service for current conditions in Southeastern Texas.
Flash Flood Warning in Southeastern Texas
Alert Details
A Flash Flood Warning has been issued by the National Weather Service (NWS) Houston/Galveston TX. It is effective from 4:41 PM CDT until 7:45 PM CDT.
Affected Areas
The warning affects East Central Austin County, Harris County, and Southern Waller County in southeastern Texas. Specific locations include Sealy, San Felipe, and Pattison.
What You Should Do
Turn around, don't drown when encountering flooded roads. Be aware of your surroundings and do not drive on flooded roads.
Expected Conditions
Thunderstorms are producing heavy rain, with 3 to 4 inches already fallen. Additional rainfall amounts of 1 to 3 inches are possible, at a rate of 3 to 4 inches in 1 hour. Flash flooding is ongoing or expected in small creeks, urban areas, highways, streets, underpasses, and other poor drainage and low-lying areas.
Timeline
The alert is effective from 4:41 PM CDT on April 12, 2026, and ends at 7:45 PM CDT on the same day.
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 (1,003 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to April 12, 2026.
Frequently Asked Questions
Common questions about this NWS weather alert.