City vs city
Alvin vs San Antonio, TX
Alvin currently scores 2 points higher overall than San Antonio, with the largest gap in hail.
Use this comparison for relocation decisions, insurance shopping, and hazard-prioritized mitigation planning.
Hazard breakdown
Scores describe each city’s reference grid tile, not every property. A missing model is unavailable, not zero risk. Air quality uses an ingested EPA AirNow snapshot and may not reflect current conditions; other factors describe baseline exposure. The overall score blends different hazards and is not a probability of damage. Read the scoring methodology and sources.
Overall
Alvin: 47/100 · San Antonio: 45/100
Alvin is 2 points higher.
Flood
Alvin: 46/100 · San Antonio: 31/100
Alvin is 15 points higher.
Alvin: FEMA NFHL flood zones: 13 features intersect this tile.
San Antonio: FEMA NFHL flood zones: 14 features intersect this tile.
Wind
Alvin: 49/100 · San Antonio: 16/100
Alvin is 33 points higher.
Alvin: Wind exposure derived from ingested design wind / climatology tiles.
San Antonio: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Alvin: 57/100 · San Antonio: 44/100
Alvin is 13 points higher.
Alvin: Lightning exposure derived from ingested climatology tiles.
San Antonio: Lightning exposure derived from ingested climatology tiles.
Tornado
Alvin: 23/100 · San Antonio: 42/100
San Antonio is 19 points higher.
Alvin: Tornado risk derived from NOAA SPC historical reports.
San Antonio: Tornado risk derived from NOAA SPC historical reports.
Hail
Alvin: 41/100 · San Antonio: 100/100
San Antonio is 59 points higher.
Alvin: Hail risk derived from NOAA SPC historical reports.
San Antonio: Hail risk derived from NOAA SPC historical reports.
Storm surge
Alvin: 96/100 · San Antonio: Unavailable
A score difference cannot be calculated without both sources.
Alvin: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
San Antonio: Storm surge model is not available for this location yet.
Wildfire
Alvin: 34/100 · San Antonio: 54/100
San Antonio is 20 points higher.
Alvin: Wildfire exposure derived from ingested fire potential tiles.
San Antonio: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Alvin: 29/100 · San Antonio: 26/100
Alvin is 3 points higher.
Alvin: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
San Antonio: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Compare with another city