San Antonio, 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 San Antonio.

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

Heat Advisory issued August 28 at 11:40PM CDT until August 29 at 7:00PM CDT by NWS Amarillo TX

* WHAT...Temperature values up to 105 expected * WHERE...Palo Duro Canyon State Park. * WHEN...From 1 PM to 7 PM CDT Saturday. * IMPACTS...Hot temperatures may cause heat illnesses.

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)