San Antonio Storm Warning 2026: What Homeowners Must Check After Severe Weather — and When to Call a Pro

San Antonio is bracing for a multi-day severe weather outbreak through April 14, 2026, with a 70% storm probability on Sunday, significant hail risk, and flash flood watches issued north and east of the city — and local homeowners are asking the same question: what do I check after a storm, and when do I need professional help?

According to Fox San Antonio, a Flood Watch is in effect for areas north and east of San Antonio, with isolated storm totals of up to 5-10 inches possible in surrounding Hill Country counties. The National Weather Service has issued severe thunderstorm warnings for parts of the region, with large hail and damaging winds among the primary threats.

What This Week's Storm Threat Means for San Antonio Homeowners

The current outbreak follows a pattern that Texas weather experts know well: multi-day severe thunderstorm cycles in April, driven by clashing warm Gulf air and cold frontal systems moving through the I-35 corridor. San Antonio sits at the southern edge of Tornado Alley, making spring the most hazardous season for home damage.

Large hail — one of the primary threats this week — causes damage that homeowners often underestimate. Hailstones 1 inch in diameter can dent gutters, crack shingles, and breach roof membranes without leaving obvious holes. Water infiltration that begins after a hail event can go undetected for weeks, leading to mold growth and structural deterioration that costs far more to remediate than the initial damage.

Flash flooding adds a separate layer of risk. When water enters a home through foundation cracks, window wells, or compromised drainage systems, it can weaken structural elements, saturate insulation, and create the conditions for mold within 24-48 hours.

The 10-Point Post-Storm Home Checklist

After any severe weather event — hail, high winds, flooding, or tornado — a structured assessment is more effective than a casual visual scan. Contractors and structural engineers recommend checking these areas in order:

Exterior:

1. Roof: Look for missing, cracked, or lifted shingles. Hail damage often appears as circular dimples on soft metal (gutters, flashing, AC units) before it becomes visible on asphalt shingles.
2. Gutters and downspouts: Dented gutters are the first indicator of hail size. Blocked downspouts after heavy rain can cause overflow that damages siding and foundation.
3. Siding and exterior walls: Check for cracks, dents, or separation at seams. Pay particular attention to areas around windows and doors where water can infiltrate.
4. Foundation: Look for new cracks along the perimeter. Even hairline cracks at corners can indicate shifting after flood saturation.
5. Windows and doors: Look for cracked glass, broken seals (fogging between panes), and difficulty opening — a sign of frame warping from wind pressure or shifting.

Interior: 6. Attic: The first interior indicator of roof damage. Water stains on rafters or insulation confirm a breach. Check with a flashlight within 24 hours of heavy rain. 7. Ceilings and upper walls: Bubbling paint, discoloration, or sagging are signs of water accumulation above. 8. Basement and crawl space: Flash flooding can saturate crawl space soil and seep through concrete blocks. Look for standing water, efflorescence (white mineral deposits), and musty odors. 9. HVAC and electrical: Flooding near electrical panels or HVAC units creates serious safety hazards. Do not touch or attempt to restart equipment that was exposed to water. 10. Garage and outbuildings: Often overlooked, but hail damage to garage doors and metal roofs can be covered by homeowner's insurance — document everything with dated photos.

When a Visual Check Is Not Enough

Homeowners can conduct the initial walkthrough themselves, but several types of post-storm damage require professional assessment:

Structural damage: If you notice cracks in load-bearing walls, doors that won't close properly, or visible deflection in rooflines, a licensed contractor or structural engineer should inspect before any repairs begin. Cosmetic repairs over structural damage are unsafe and can affect insurance claims.

Roof damage beyond surface level: Hail impact that damages the underlying mat of asphalt shingles — not just the surface granules — requires a roofing contractor's assessment. Insurers routinely require a professional inspection report before processing hail damage claims.

Mold risk after flooding: Any area that remained wet for more than 24-48 hours should be evaluated by a contractor familiar with moisture remediation. The Federal Emergency Management Agency (FEMA) recommends professional assessment for any flooding event that involves gray or black water, or that affects HVAC systems.

Electrical and gas systems: These must be inspected by licensed professionals before the home is reoccupied. This is non-negotiable and legally required in most Texas jurisdictions.

Avoiding Post-Storm Contractor Scams

Severe weather events reliably bring an influx of unlicensed contractors — colloquially known as "storm chasers" — who move from disaster zone to disaster zone offering quick, cheap repairs. Texas saw significant complaints after major storms in recent years, with homeowners paying upfront for work that was never completed or completed incorrectly.

Key warning signs:

• Requests for full payment upfront: Legitimate contractors typically require a deposit (10-30%) with the balance due on completion
• No physical business address: Look up Texas contractor licensing at the Texas Department of Licensing and Regulation
• High-pressure urgency tactics: "I have materials in my truck right now" is a common scam opener
• Offers to waive your insurance deductible: This is illegal in Texas under state insurance law

Before hiring any contractor for post-storm repairs, verify their license status, ask for proof of insurance (liability and workers' compensation), and get at least two written estimates.

Document Everything Before Repairs Begin

For insurance purposes, thorough documentation before any repairs are made is critical. This means:

• Date-stamped photos and video of every area showing damage
• A written list of all damaged items with estimated replacement values
• Copies of any purchases made to prevent further damage (tarps, water pumps, temporary boarding)

Most homeowner's insurance policies in Texas cover sudden storm damage, including hail and wind, but require a claim to be filed within a reasonable timeframe — typically 1-2 years. Emergency repairs to prevent further damage (tarping a roof, boarding windows) are generally covered even before the adjuster arrives.

San Antonio Resources for This Week's Storm

As the severe weather event continues through mid-April, San Antonio residents can monitor updates from the National Weather Service San Antonio office and the city's official emergency management resources. Flood watches and storm warnings are updated frequently during active weather events.

If your home has sustained damage — or you are unsure whether it has — connecting with a licensed home improvement contractor or structural specialist is the fastest path to clarity and safe repairs. ExpertZoom's Home Improvement experts include licensed craftspeople and contractors who can assess post-storm damage and guide you through the repair and insurance process.

Don't wait for a small issue to become a costly one. The most expensive home repairs are usually the ones that sat undetected for weeks.