Austin, TX Warnings, Watches and Advisories

When a severe thunderstorm warning is issued, the storm may produce damaging winds, large hail, dangerous lightning, and heavy rain. In some cases, heavy rainfall produced by a severe storm can also lead to flash flooding. Do not drive vehicles through flooded areas. The water depth or fast flowing water/mud/debris from a flash flood will make road conditions unsafe. Do not rely soley on data presented here or other third-party websites - always check your official national and local weather service agency website, socials, radio and/or TV stations for making critical decisions related to weather events.

Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Austin.

Use the Radar Maps link provided to understand the trajectory of a storm.

Severe Thunderstorm Warning issued August 28 at 9:51PM CDT until August 28 at 10:15PM CDT by NWS Austin/San Antonio TX

At 951 PM CDT, severe thunderstorms were located along a line extending from near New Fountain to 6 miles southeast of Lytle, moving southwest at 30 mph. HAZARD...60 mph wind gusts and nickel size hail. SOURCE...Trained weather spotters. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... San Antonio, Devine, Castroville, Lytle, Somerset, Natalia, Lacoste, Lackland AFB, Noonan, Biry, Pearson, Sea World, Bigfoot, Von Ormy, Iuka, Macdona, Mangus Corner, and Rossville.

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 Hills, Garden Ridge, Shavano Park, Hollywood Park and Olmos Park.

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 Lake, Leon Valley, Alamo Heights, Windcrest, Terrell Hills and Bulverde. - http://www.weather.gov/safety/flood

Air Quality Alert issued August 28 at 3:47PM CDT by NWS Fort Worth TX

AQAFWD The Texas Commission on Environmental Quality (TCEQ) has issued an Ozone Action Day for the Dallas-Fort Worth area for Saturday, August 29, 2026. Atmospheric conditions are expected to be favorable for producing high levels of ozone air pollution in the Dallas-Fort Worth area on Saturday. You can help prevent ozone pollution by sharing a ride, walking, riding a bicycle, taking your lunch to work, avoiding drive-through lanes, conserving energy, and keeping your vehicle properly tuned. For more information on ozone: Ozone: The Facts (www.tceq.texas.gov/goto/ozonefacts) Air North Texas: (www.airnorthtexas.org) EPA Air Now (www.airnow.gov/index.cfm?action.local_state&STATEID=45&TAB=0) Take care of Texas (www.takecareoftexas.org) North Central Texas Council of Governments Air Quality (www.nctcog.org/trans/air/index.asp)