City vs city
Alcoa vs Chattanooga, TN
Chattanooga currently scores 6 points higher overall than Alcoa, 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
Alcoa: 35/100 · Chattanooga: 41/100
Chattanooga is 6 points higher.
Flood
Alcoa: 39/100 · Chattanooga: 37/100
Alcoa is 2 points higher.
Alcoa: FEMA NFHL flood zones: 9 features intersect this tile.
Chattanooga: FEMA NFHL flood zones: 7 features intersect this tile.
Wind
Alcoa: 13/100 · Chattanooga: 14/100
Chattanooga is 1 points higher.
Alcoa: Wind exposure derived from ingested design wind / climatology tiles.
Chattanooga: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Alcoa: 40/100 · Chattanooga: 52/100
Chattanooga is 12 points higher.
Alcoa: Lightning exposure derived from ingested climatology tiles.
Chattanooga: Lightning exposure derived from ingested climatology tiles.
Tornado
Alcoa: 0/100 · Chattanooga: 4/100
Chattanooga is 4 points higher.
Alcoa: Tornado risk derived from NOAA SPC historical reports.
Chattanooga: Tornado risk derived from NOAA SPC historical reports.
Hail
Alcoa: 44/100 · Chattanooga: 75/100
Chattanooga is 31 points higher.
Alcoa: Hail risk derived from NOAA SPC historical reports.
Chattanooga: Hail risk derived from NOAA SPC historical reports.
Storm surge
Alcoa: Unavailable · Chattanooga: Unavailable
A score difference cannot be calculated without both sources.
Alcoa: Storm surge model is not available for this location yet.
Chattanooga: Storm surge model is not available for this location yet.
Wildfire
Alcoa: 41/100 · Chattanooga: 69/100
Chattanooga is 28 points higher.
Alcoa: Wildfire exposure derived from ingested fire potential tiles.
Chattanooga: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Alcoa: 33/100 · Chattanooga: 36/100
Chattanooga is 3 points higher.
Alcoa: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Chattanooga: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.