Flash Flood Warning — Bexar County, Texas
Flooding is imminent or already occurring. Move to higher ground immediately — never drive through flooded roads.
Current Status
🌊 Active: Flash Flood Warning
Flash Flood Warning issued August 28 at 9:09PM CDT until August 29 at 12:15AM CDT by NWS Austin/San Antonio TX
FFWEWX The National Weather Service in Austin/San Antonio has issued a * Flash Flood Warning for... Northern Bexar County in south central Texas... South Central Comal County in south central Texas... * Until 1215 AM CDT. * At 909 PM CDT, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain across the warned area. Between 2 and 3 inches of rain have fallen. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Radar and automated gauges. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... San Antonio, Schertz, Converse, Universal City, Live Oak, Selma, San Antonio Int Airport, Randolph AFB, Leon Valley, Helotes, Kirby, Alamo Heights, Windcrest, Terrell Hill
Effective August 28, 2026 at 10:09 PM ET · Expires August 29, 2026 at 1:15 AM ET
Event Details
Event Type
Flash Flood Warning
Severity
severe
Issued By
NWS Austin/San Antonio TX
Expires
August 29, 2026 at 1:15 AM ET
Last Checked
2 minutes ago
What To Do
📋 Official NWS Guidance
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. Be aware of your surroundings and do not drive on flooded roads.
Also In Effect For
This same Flash Flood Warning also covers:
Other Active Alerts in Texas
Flood Advisory
Flood Advisory
Flood Advisory
Flash Flood Warning
Flood Advisory
Severe Thunderstorm Warning
Get Flash Flood Warning Alerts for Bexar County
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Frequently Asked Questions
What does a Flash Flood Warning mean for Bexar County, Texas?
Flooding is imminent or already occurring. Move to higher ground immediately — never drive through flooded roads.
Is this Flash Flood Warning currently active?
Yes — this alert is active as of our last check (2 minutes ago). It's set to expire August 29, 2026 at 1:15 AM ET.
How do I get notified about Flash Flood Warning alerts for Bexar County?
Download StormCast free on Google Play and set Bexar County, Texas as one of your monitored locations. StormCast checks the NWS feed continuously and pushes alerts like this directly to your phone — even with the screen off.
What other areas does this alert cover?
This same Flash Flood Warning is also in effect for Comal County.