Per-city wind zone · San Patricio County
Mathis, TX wind zone & TWIA tier
Mathis is Lake Corpus Christi area; TWIA territory but on the inland edge. This page summarizes the ASCE 7-16 design wind speed, TWIA windstorm coverage status, hurricane evacuation tier, and what those mean in practice for new roofing, window, fence, shutter, or other exterior installs here.
Mathis, Texas
San Patricio County · Coastal Bend region
Design wind speed
130-140 mph
ASCE 7-16 Risk Cat II
TWIA windstorm
REQUIRED
WPI-8 cert needed
Hurricane evac tier
None
No formal evac order
Salt-air exposure
Near Coastal
Galvanized hardware recommended
What this means for new work in Mathis
Inside TWIA territory. Mathis (San Patricio County) is one of the 14 first-tier coastal counties covered by the Texas Windstorm Insurance Association per Texas Insurance Code Chapter 2210. Any new roofing, window, or exterior door install needs a WPI-8 Certificate of Compliance from a TDI-approved inspector to keep windstorm policy coverage active. Skip the WPI-8 and the next windstorm claim gets denied.
Near-coastal salt-air on east winds. Galvanized fasteners and primer-coated exterior steel last years longer than mill-finish — the salt reaches this far inland on most east-wind days.
No formal hurricane evacuation tier. Mathis is inland enough to skip mandatory evacuation orders, but tropical systems still arrive as heavy rain + damaging wind. Projects near completion in Aug-Oct should still plan for a brief weather hold during major Gulf events.
Look up a specific address
The values above are county-level. ASCE 7-16 wind speed at YOUR specific lot may be on the higher or lower end of the 130-140 mph range depending on proximity to the coast and local terrain. For an exact reading, use the address lookup on our home page or go straight to ATC Hazards by Location — the canonical ASCE source.
Related Coastal Bend tools
- ⛈️ Mathis live weather — current conditions, 7-day forecast, NWS alerts for Mathis
- 🌀 Address-level wind zone lookup — apex tool
- 📞 NPCLocal directory — verified Coastal Bend service-provider listings
Sources
- Texas Windstorm Insurance Association
- Texas Department of Insurance — Windstorm Inspection (WPI-8)
- ATC Hazards by Location — ASCE 7-16 wind speed (canonical)
- Texas Division of Emergency Management — evacuation tiers
- Texas Insurance Code §2210 — TWIA statutory definitions
Disclaimer
Informational summary based on publicly published TWIA + ASCE + TDEM data. Not a substitute for an ATC Hazards site report or a TDI-licensed engineer's design. For permit applications or insurance documentation, always confirm with the official .gov sources above.