San Antonio's weather can be unpredictable and severe — from flash flooding and hailstorms to rare freezing events like the 2021 winter storm. Preparation is the best defense against storm damage. Here's your comprehensive guide to protecting your home.
Before Storm Season
Inspect your roof — replace missing or damaged shingles, check flashingClean gutters and downspouts — clogged gutters cause roof leaks and foundation damageTrim trees — remove dead branches that could fall on your homeCheck your sump pump — test it regularly and consider a battery backupReview your insurance — confirm you have adequate coverage, including flood insurance if neededDuring a Storm
Stay informed — monitor NWS San Antonio and local news for warningsMove valuables off ground floors if flooding is expectedNever drive through flooded roads — 'Turn Around, Don't Drown'Document any damage in real time with photos and videoAvoid using electrical systems if water is entering your homeAfter a Storm
Check for structural damage before re-entering your homeDocument all damage for insurance before cleanupAvoid standing water — it may be contaminated or electrically chargedCall AST for emergency water extraction and damage assessmentDon't delay — mold can begin growing within 24-48 hours after water exposureFlash Flooding in San Antonio
San Antonio is one of the most flash-flood-prone cities in America. The combination of impervious urban surfaces, clay soil, and dramatic rainfall creates dangerous conditions quickly. Keep emergency supplies ready, know your evacuation routes, and have AST's number saved for post-flood restoration.
Freeze Preparedness
While rare, freezing events can devastate San Antonio homes (most of which aren't built for extreme cold). Insulate exposed pipes, know how to shut off your water main, keep faucets dripping during freezes, and have a plan for burst pipes. AST responded to thousands of burst pipe calls during Winter Storm Uri.
Your Emergency Checklist
AST emergency line: (210) 599-9726 (24/7)Insurance company phone number and policy numberPhotos/video of your home in good condition (for insurance comparison)Location of your main water shutoff valveLocation of your electrical panelEmergency supply kit (water, flashlights, first aid, medications)