City vs city
Houston vs Port Arthur, TX
Port Arthur currently scores 7 points higher overall than Houston, with the largest gap in tornado.
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
Houston: 53/100 · Port Arthur: 60/100
Port Arthur is 7 points higher.
Flood
Houston: 39/100 · Port Arthur: 1/100
Houston is 38 points higher.
Houston: FEMA NFHL flood zones: 16 features intersect this tile.
Port Arthur: FEMA NFHL flood zones: 1 features intersect this tile.
Wind
Houston: 45/100 · Port Arthur: 48/100
Port Arthur is 3 points higher.
Houston: Wind exposure derived from ingested design wind / climatology tiles.
Port Arthur: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Houston: 68/100 · Port Arthur: 58/100
Houston is 10 points higher.
Houston: Lightning exposure derived from ingested climatology tiles.
Port Arthur: Lightning exposure derived from ingested climatology tiles.
Tornado
Houston: 42/100 · Port Arthur: 100/100
Port Arthur is 58 points higher.
Houston: Tornado risk derived from NOAA SPC historical reports.
Port Arthur: Tornado risk derived from NOAA SPC historical reports.
Hail
Houston: 76/100 · Port Arthur: 94/100
Port Arthur is 18 points higher.
Houston: Hail risk derived from NOAA SPC historical reports.
Port Arthur: Hail risk derived from NOAA SPC historical reports.
Storm surge
Houston: 75/100 · Port Arthur: 99/100
Port Arthur is 24 points higher.
Houston: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Port Arthur: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Wildfire
Houston: 52/100 · Port Arthur: 50/100
Houston is 2 points higher.
Houston: Wildfire exposure derived from ingested fire potential tiles.
Port Arthur: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Houston: 30/100 · Port Arthur: 26/100
Houston is 4 points higher.
Houston: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Port Arthur: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.