City vs city
Port Isabel vs San Antonio, TX
Port Isabel currently scores 5 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
Port Isabel: 48/100 · San Antonio: 43/100
Port Isabel is 5 points higher.
Flood
Port Isabel: 100/100 · San Antonio: 26/100
Port Isabel is 74 points higher.
Port Isabel: FEMA NFHL flood zones: 28 features intersect this tile.
San Antonio: FEMA NFHL flood zones: 6 features intersect this tile.
Wind
Port Isabel: 53/100 · San Antonio: 17/100
Port Isabel is 36 points higher.
Port Isabel: Wind exposure derived from ingested design wind / climatology tiles.
San Antonio: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Port Isabel: 27/100 · San Antonio: 37/100
San Antonio is 10 points higher.
Port Isabel: Lightning exposure derived from ingested climatology tiles.
San Antonio: Lightning exposure derived from ingested climatology tiles.
Tornado
Port Isabel: 31/100 · San Antonio: 38/100
San Antonio is 7 points higher.
Port Isabel: Tornado risk derived from NOAA SPC historical reports.
San Antonio: Tornado risk derived from NOAA SPC historical reports.
Hail
Port Isabel: 1/100 · San Antonio: 100/100
San Antonio is 99 points higher.
Port Isabel: Hail risk derived from NOAA SPC historical reports.
San Antonio: Hail risk derived from NOAA SPC historical reports.
Storm surge
Port Isabel: 95/100 · San Antonio: Unavailable
A score difference cannot be calculated without both sources.
Port Isabel: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
San Antonio: Storm surge model is not available for this location yet.
Wildfire
Port Isabel: 47/100 · San Antonio: 57/100
San Antonio is 10 points higher.
Port Isabel: Wildfire exposure derived from ingested fire potential tiles.
San Antonio: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Port Isabel: 28/100 · San Antonio: 28/100
No gap.
Port Isabel: 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.