San Antonio Recovers After 77 MPH Downburst Kills Three and Severs Power to 112,000

The scale of Bexar County's infrastructure failure was determined the moment a stalled cold front collided with Gulf moisture over the city's North Side on August 28, 2026. Rather than forming a circulating tornado, the rapidly intensifying system unleashed a massive downburst of straight-line winds. This atmospheric mechanism accelerated a medium-probability summer thunderstorm into a 35-mile-long corridor of destruction that severed power to a quarter of the city's municipal utility customers.

The National Weather Service recorded a peak gust of 77 mph at San Antonio International Airport, while radar estimates indicated wind speeds reached 85 mph at 2,000 feet. The system generated 24,000 cloud-to-ground lightning strikes as it moved southwesterly across the metropolitan area. The resulting damage path stretched from Live Oak to the far West Side, bringing heavy downpours that triggered immediate flash flooding in low-lying urban corridors.

San Antonio Police confirmed two fatalities linked to the sudden flooding, while authorities continue to investigate a third death potentially tied to the storm's aftermath. A 46-year-old woman drowned after being swept into the rushing waters of San Pedro Creek north of downtown, and a man in his 50s was found dead at Woodlawn Lake the following morning.[2]

The straight-line winds devastated the local power grid, toppling more than 500 power lines and snapping 50 utility poles. At the storm's peak, 112,000 CPS Energy customers lost electricity. Because the utility measures outages by meter connections rather than individual residents, the blackout affected an estimated 250,000 people across the region.[1]

CPS Energy deployed more than 80 crews, augmented by outside contractors, to rebuild the shattered infrastructure. The recovery required clearing 400 downed trees and replacing 137 transformers before new lines could be strung. "As we get smaller and smaller, the number gets harder and harder because it turns into individual outages where there may be just two or three people, and there's many, many of those," said CPS Energy Interim President and CEO Frank Almaraz.

By Tuesday night, September 1, the utility had restored power to all storm-related outages. During the multi-day blackout, the city operated three resilience hubs at the Gilbert Garza, Normoyle, and Northeast senior centers, providing air conditioning and medical device charging for residents unable to remain in sweltering homes.

The financial toll of the grid failure and property damage has now triggered a formal state review. Governor Greg Abbott directed the Texas Division of Emergency Management to conduct preliminary damage assessments in Bexar County alongside the U.S. Small Business Administration.

Local officials are urging residents to document their uninsured losses through the state's iSTAT survey. The aggregated data will determine whether Bexar County meets the financial threshold required to unlock federal low-interest disaster loans—a bureaucratic hurdle that recently took seven weeks to clear for neighboring counties affected by July flooding.