City vs city
Castalian Springs vs Chattanooga, TN
Chattanooga currently scores 9 points higher overall than Castalian Springs, with the largest gap in wildfire.
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
Castalian Springs: 32/100 · Chattanooga: 41/100
Chattanooga is 9 points higher.
Flood
Castalian Springs: 32/100 · Chattanooga: 37/100
Chattanooga is 5 points higher.
Castalian Springs: FEMA NFHL flood zones: 4 features intersect this tile.
Chattanooga: FEMA NFHL flood zones: 7 features intersect this tile.
Wind
Castalian Springs: 14/100 · Chattanooga: 14/100
No gap.
Castalian Springs: Wind exposure derived from ingested design wind / climatology tiles.
Chattanooga: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Castalian Springs: 49/100 · Chattanooga: 52/100
Chattanooga is 3 points higher.
Castalian Springs: Lightning exposure derived from ingested climatology tiles.
Chattanooga: Lightning exposure derived from ingested climatology tiles.
Tornado
Castalian Springs: 12/100 · Chattanooga: 4/100
Castalian Springs is 8 points higher.
Castalian Springs: Tornado risk derived from NOAA SPC historical reports.
Chattanooga: Tornado risk derived from NOAA SPC historical reports.
Hail
Castalian Springs: 47/100 · Chattanooga: 75/100
Chattanooga is 28 points higher.
Castalian Springs: Hail risk derived from NOAA SPC historical reports.
Chattanooga: Hail risk derived from NOAA SPC historical reports.
Storm surge
Castalian Springs: Unavailable · Chattanooga: Unavailable
A score difference cannot be calculated without both sources.
Castalian Springs: Storm surge model is not available for this location yet.
Chattanooga: Storm surge model is not available for this location yet.
Wildfire
Castalian Springs: 31/100 · Chattanooga: 69/100
Chattanooga is 38 points higher.
Castalian Springs: Wildfire exposure derived from ingested fire potential tiles.
Chattanooga: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Castalian Springs: 36/100 · Chattanooga: 36/100
No gap.
Castalian Springs: 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.