San Antonio Braces For Severe Storms After Record Heatwave

San Antonio Braces For Severe Storms After Record Heatwave...

San Antonio is under a severe weather alert as thunderstorms and potential flash floods threaten the region Tuesday, following an unseasonable heatwave that shattered April temperature records. The National Weather Service (NWS) warns of damaging winds up to 70 mph, large hail, and localized flooding, with the greatest risk between 3 PM and midnight CDT.

The sudden shift comes after San Antonio endured six consecutive days of triple-digit temperatures last week, peaking at 104°F on April 22—the earliest 100°F+ reading in city history. CPS Energy reported record electricity demand as residents cranked up air conditioning, while emergency rooms saw a 30% spike in heat-related illnesses.

Meteorologists attribute the extreme swing to a cold front colliding with lingering Gulf moisture. "This is a classic Texas spring scenario," said NWS San Antonio lead forecaster Paul Yura. "We're transitioning from record heat to potentially life-threatening storms within 48 hours."

Local schools have adjusted dismissal times, and the San Antonio International Airport canceled 12 flights as of noon Tuesday. The city has activated its Emergency Operations Center and deployed high-water rescue vehicles to flood-prone areas like Olmos Creek and Salado Creek.

Residents are clearing storm drains and securing outdoor items after social media videos showed trampolines and patio furniture becoming airborne during similar storms in Austin on Monday. HEB and Walmart stores report runs on bottled water, batteries, and portable generators.

The weather whiplash has drawn national attention as climate scientists note increasing frequency of such rapid transitions. NOAA data shows the South Central U.S. has experienced a 40% increase in "flash drought to deluge" events since 2000 compared to previous decades.

San Antonio's Office of Emergency Management will provide live updates via Twitter (@SAemergency) and the city's SA Alert system. Residents are advised to charge devices, avoid travel during peak storm hours, and heed flash flood warnings—particularly in the Hill Country watershed areas northwest of the city.