Heat Wave Hits San Antonio: Excessive Temperatures and Tropical Storm Updates

San Antonio is finally breaking its mold as it hits 100 degrees today, but this feat comes with a cost, as the high humidity levels create a stifling heat index that will make it feel like 105 to 110 degrees.

The extreme heat and humidity are not without consequences, as heat advisories and warnings have been issued across most of Texas. Residents are advised to exercise caution outdoors, especially during peak hours between 1 p.m. and 7 p.m. as the body acclimates to the triple-digit temperatures for the first time this year. Prolonged exposure to these conditions can lead to heat exhaustion and sunstroke, so it is crucial to take necessary precautions.

While the heat takes center stage, a small chance of a stray shower is possible overnight due to the approach of Tropical Storm Bertha. Bertha has weakened over the past few days, but its presence will still bring some rain and gusty winds to areas near New Orleans. As Bertha moves west toward the Texas coast, it will continue to weaken, ultimately having a minimal impact near Beaumont/Houston/Galveston on Thursday. Bertha will dissipate by Friday morning, so there is no cause for alarm or disruption in travel plans.

The long-term effects of Bertha will be minimal, with the possibility of flash flooding in low-lying areas near the Gulf Coast. However, residents in areas like Cotulla and Tilden along the Nueces and Frio Rivers should be prepared for potential flooding as the nearly 500 billion gallons of water that fell last week continue to drain into Choke Canyon and Lake Corpus Christi. The prolonged flooding will have a lasting impact on these communities, with water levels expected to remain at major flood stage through the weekend.

The Edwards Aquifer, as well as Canyon Lake and Medina Lake, are experiencing the highest levels in four years. The excessive water has raised concerns about the long-term effects on the local ecosystem and water supply. While it is reassuring that Choke Canyon and Lake Corpus Christi will eventually rise from floodwaters, the prolonged flooding will undoubtedly have far-reaching consequences.

KSAT meteorologists will continue to monitor the situation and provide updates as necessary. With the expertise of Shelby Ebertowski and Sarah Spivey, our audience can expect accurate and informative weather updates. The dedicated team at KSAT will keep the community informed and prepared for any weather-related challenges.

Both Shelley Ebertowski, who joined KSAT 12 News in January 2025, and Sarah Spivey, a San Antonio native who has been with the team since 2017, bring a wealth of knowledge and experience to the team. Their passion for weather and dedication to their community make them ideal leaders to guide residents through this challenging heat wave and tropical storm cycle.

KSAT's commitment to excellence is evident in its use of artificial intelligence technologies to enhance news gathering, reporting, and presentation processes. This forward-thinking approach ensures that the community receives accurate and timely information, setting a new standard for weather coverage in the region.