Flash Flood Warning Issued for Bexar, Comal, and Guadalupe Counties in Texas
This alert is no longer in effect.
NOAA issued it on April 28, 2026, 3 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 until 5:00 PM CDT on April 20, 2026, for Bexar, Comal, and Guadalupe counties in south central Texas, where heavy rain is causing life-threatening flooding.
Read this weather record in 30 seconds
- Record type
- Flash Flood Warning
- Affected area
- South Central Texas
- Issued
- April 28, 2026
- Issuing authority
- NWS Austin/San Antonio 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 3 months ago; use the issuing agency's live warning service for current conditions in South Central Texas.
Flash Flood Warning
Alert Details
The alert is a Flash Flood Warning, issued by NWS Austin/San Antonio TX. It is effective from 1:50 PM CDT on April 20, 2026, until 5:00 PM CDT on the same day.
Affected Areas
The warning affects Bexar County, TX; Comal County, TX; and Guadalupe County, TX. Specific locations include San Antonio, New Braunfels, Schertz, Cibolo, Converse, Universal City, Live Oak, Selma, Randolph AFB, San Antonio Int Airport, Kirby, Alamo Heights, Windcrest, Terrell Hills, Bulverde, Garden Ridge, Shavano Park, Hollywood Park, McQueeney, and Olmos Park.
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. Stay away or be swept away from river banks and culverts.
Expected Conditions
Thunderstorms are producing heavy rain, with between 1 and 3 inches of rain already fallen and additional rainfall amounts of 1 to 2 inches possible. This is leading to life-threatening flash flooding of creeks and streams, urban areas, highways, streets, and underpasses.
Timeline
The alert is effective from 1:50 PM CDT on April 20, 2026, and ends at 5:00 PM CDT on April 20, 2026.
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 (1,199 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to April 28, 2026.
Frequently Asked Questions
Common questions about this NWS weather alert.