News Summary
Severe thunderstorms hit San Antonio and the surrounding Hill Country, bringing large hail, heavy rainfall, and flooding. A flood warning has been issued until early morning. The storms resulted in power outages for over 12,000 customers, closed roads, and significant concerns about flash flooding. Residents reported up to 3 inches of rain, and the storm’s impact comes amid ongoing drought conditions in the region. Local officials remain vigilant as forecasts suggest a temporary lull in storm activity, but flooding risks persist.
San Antonio
Severe thunderstorms swept through San Antonio and the Hill Country on the night of May 26, 2025, causing notable weather disturbances including large hail, heavy rainfall, and flooding. A flood warning has been issued for affected counties until 3 a.m. on May 27, as local reports indicate that some areas received over 3 inches of rain.
During the storms, residents reported large hail, with incidents of lemon-sized hail recorded off Balcones Drive in Fredericksburg, quarter-sized hail in Helotes, and dime-sized hail at Kallison Ranch. Wind gusts and lightning contributed to significant disturbances, causing power outages that impacted over 12,000 customers in the San Antonio area.
As the storms began around 8:15 p.m., lightning flashes illuminated the sky, and thunder echoed through neighborhoods. Streets were reported to have turned into rivers due to hail accumulation, and as of this morning, 20 roads in Bexar County were closed due to high water levels.
A Tornado Watch was previously issued but has since expired. However, the region remains under a Severe Thunderstorm Watch until 5 a.m. on May 27, with the National Weather Service categorizing severe weather risks as a Level 2 out of 5 for areas including San Antonio, Boerne, and Kerrville.
Impact of the Storms
The storms are expected to see a temporary lull after 2 a.m., according to meteorological forecasts, but the danger of flooding persists, especially in far west Bexar County and northwest San Antonio, where rainfall surpassed the 3-inch mark in some localities. Storm activity has pushed water levels to critical points, prompting warnings from officials about potential flash flooding.
The extent of the damage is still being assessed, but the combination of large hail and heavy rainfall has raised concerns among residents. Many have shared images through community platforms that showcase the severity of hail and lightning during the intense weather events.
Weather Context
This surge of storms comes amid exceptional drought conditions in the region, where only 6.11 inches of rainfall has been recorded thus far in 2025, roughly half of what would typically be expected by this time of year. The significant rains from these thunderstorms could temporarily alleviate drought concerns, but the rapid accumulation also poses flooding risks.
As residents in San Antonio and the surrounding areas deal with the aftermath of these storms, forecasts suggest that the weather pattern will stabilize by the weekend, with lower chances of rain expected. While community members prepare for recovery efforts, they remain vigilant regarding possible further weather disturbances in the region.
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Additional Resources
- KSAT News
- Wikipedia: Severe Storm
- News4 San Antonio
- Google Search: Tornado Watch San Antonio
- KENS5 News
- Google Scholar: Severe Weather Forecast
- San Antonio Express News
- Encyclopedia Britannica: Severe Thunderstorm
- KENS5 Weather Alert
- Google News: San Antonio Severe Weather
Author: STAFF HERE SAN ANTONIO WRITER
The SAN ANTONIO STAFF WRITER represents the experienced team at HERESanAntonio.com, your go-to source for actionable local news and information in San Antonio, Bexar County, and beyond. Specializing in "news you can use," we cover essential topics like product reviews for personal and business needs, local business directories, politics, real estate trends, neighborhood insights, and state news affecting the area—with deep expertise drawn from years of dedicated reporting and strong community input, including local press releases and business updates. We deliver top reporting on high-value events such as Fiesta San Antonio, San Antonio Stock Show & Rodeo, and Dia de los Muertos. Our coverage extends to key organizations like the Greater San Antonio Chamber of Commerce and United Way of San Antonio and Bexar County, plus leading businesses in retail, insurance, and energy that power the local economy such as H-E-B, USAA, and Valero Energy. As part of the broader HERE network, including HEREAustinTX.com, HERECollegeStation.com, HEREDallas.com, and HEREHouston.com, we provide comprehensive, credible insights into Texas's dynamic landscape.
