Flood Advisory — Bexar County, Texas
Minor flooding is expected — not severe enough for a warning, but potentially inconvenient or hazardous for travel.
Current Status
🌊 Active: Flood Advisory
Flood Advisory issued August 28 at 8:49PM CDT until August 28 at 11:45PM CDT by NWS Austin/San Antonio TX
* WHAT...Urban area and small stream flooding caused by excessive rainfall is expected. * WHERE...Northern Bexar County in south central Texas... Eastern Comal County in south central Texas... Northwestern Guadalupe County in south central Texas... Southeastern Hays County in south central Texas... * WHEN...Until 1145 PM CDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. Water over roadways. Overflowing poor drainage areas. * ADDITIONAL DETAILS... - At 849 PM CDT, Doppler radar indicated heavy rain due to thunderstorms. This will cause urban and small stream flooding. Between 1 and 2 inches of rain have fallen. - Additional rainfall amounts up to 1 inch are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... San Antonio, New Braunfels, San Marcos, Schertz, Cibolo, Converse, Universal City, Live Oak, Selma, Wimberley, Canyon Lake Dam, Randolph AFB, San Antonio Int Airport, Canyon La
Effective August 28, 2026 at 9:49 PM ET · Expires August 29, 2026 at 12:45 AM ET
Event Details
Event Type
Flood Advisory
Severity
minor
Issued By
NWS Austin/San Antonio TX
Expires
August 29, 2026 at 12:45 AM ET
Last Checked
just now
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 Flood Advisory also covers:
Other Active Alerts in Texas
Severe Thunderstorm Warning
Severe Thunderstorm Warning
Flood Advisory
Flash Flood Warning
Flood Advisory
Severe Thunderstorm Warning
Get Flood Advisory Alerts for Bexar County
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Frequently Asked Questions
What does a Flood Advisory mean for Bexar County, Texas?
Minor flooding is expected — not severe enough for a warning, but potentially inconvenient or hazardous for travel.
Is this Flood Advisory currently active?
Yes — this alert is active as of our last check (just now). It's set to expire August 29, 2026 at 12:45 AM ET.
How do I get notified about Flood Advisory 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 Flood Advisory is also in effect for Guadalupe County, Hays County, Comal County.