Alvin, TX
Local storm history & FEMA National Risk Index data
Alvin is rated Relatively Moderate for overall natural hazard risk — near the middle compared to other US counties — based on FEMA's National Risk Index for Brazoria County, TX. The county's highest-rated hazards are tornado, hurricane, and lightning.
Storm events near Alvin
NOAA-recorded tornado, hail, and flood events within 25 miles of Alvin's center, 2016–2026 — the only hazards NOAA reports with exact coordinates, so these counts are specific to Alvin itself, not the whole county.
County-wide hazard risk
Every other hazard FEMA and NOAA track — including drought — is only scored at the county level. These are Brazoria County's FEMA National Risk Index scores, covering Alvin along with the rest of the county, not a Alvin-specific figure.
| Hazard | NRI score | Rating |
|---|---|---|
| Wildfire | 86.1 | Relatively Low |
| Inland Flooding | 94.4 | Relatively High |
| Coastal Flooding | 76.4 | Relatively Moderate |
| Earthquake | 46 | Very Low |
| Heat Wave | 93.1 | Relatively Moderate |
| Tornado | 97 | Relatively High |
| Avalanche | — | Not Applicable |
| Cold Wave | 83.1 | Relatively Moderate |
| Drought | 84.5 | Relatively Moderate |
| Hail | 60.1 | Relatively Low |
| Hurricane | 96.9 | Relatively High |
| Ice Storm | 85.1 | Relatively High |
| Landslide | 43.7 | Very Low |
| Lightning | 95.5 | Relatively High |
| Strong Wind | 59.6 | Relatively Moderate |
| Tsunami | — | Insufficient Data |
| Volcanic Activity | — | Not Applicable |
| Winter Weather | 22.4 | Very Low |
Source: FEMA National Risk Index v1.20.0, December 2025. See the methodology page for definitions, or the full Brazoria County risk profile for disaster declarations, social vulnerability, and climate projection data.
Other cities in Brazoria County:
More on Brazoria County:
Frequently asked questions
What natural hazards is Alvin, TX at risk of?
Alvin is rated Relatively Moderate for overall natural hazard risk by FEMA's National Risk Index — near the middle compared to other US counties. The highest-rated hazards for Brazoria County, where Alvin is located, are tornado, hurricane, and lightning.
What is Alvin's biggest natural hazard risk?
Tornado is the highest-rated hazard for Brazoria County, where Alvin is located, scoring 97 out of 100 on FEMA's National Risk Index (rated "Relatively High").
Is Alvin a high-risk area for natural disasters?
Somewhat — Alvin carries near the middle compared to other US counties for overall natural hazard risk, per FEMA's National Risk Index rating of "Relatively Moderate" for Brazoria County.
Has Alvin had tornadoes, hail, or flooding?
NOAA has recorded 30 tornado, 72 hail, 83 inland flooding events within 25 miles of Alvin since 2016.