City vs city
Chattanooga vs New Johnsonville, TN
Chattanooga currently scores 10 points higher overall than New Johnsonville, 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
Chattanooga: 46/100 · New Johnsonville: 36/100
Chattanooga is 10 points higher.
Flood
Chattanooga: 11/100 · New Johnsonville: 68/100
New Johnsonville is 57 points higher.
Chattanooga: FEMA NFHL flood zones: 4 features intersect this tile.
New Johnsonville: FEMA NFHL flood zones: 10 features intersect this tile.
Wind
Chattanooga: 14/100 · New Johnsonville: 14/100
No gap.
Chattanooga: Wind exposure derived from ingested design wind / climatology tiles.
New Johnsonville: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Chattanooga: 54/100 · New Johnsonville: 70/100
New Johnsonville is 16 points higher.
Chattanooga: Lightning exposure derived from ingested climatology tiles.
New Johnsonville: Lightning exposure derived from ingested climatology tiles.
Tornado
Chattanooga: 42/100 · New Johnsonville: 4/100
Chattanooga is 38 points higher.
Chattanooga: Tornado risk derived from NOAA SPC historical reports.
New Johnsonville: Tornado risk derived from NOAA SPC historical reports.
Hail
Chattanooga: 100/100 · New Johnsonville: 28/100
Chattanooga is 72 points higher.
Chattanooga: Hail risk derived from NOAA SPC historical reports.
New Johnsonville: Hail risk derived from NOAA SPC historical reports.
Storm surge
Chattanooga: Unavailable · New Johnsonville: Unavailable
A score difference cannot be calculated without both sources.
Chattanooga: Storm surge model is not available for this location yet.
New Johnsonville: Storm surge model is not available for this location yet.
Wildfire
Chattanooga: 65/100 · New Johnsonville: 37/100
Chattanooga is 28 points higher.
Chattanooga: Wildfire exposure derived from ingested fire potential tiles.
New Johnsonville: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Chattanooga: 36/100 · New Johnsonville: 29/100
Chattanooga is 7 points higher.
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.
New Johnsonville: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.