City vs city
Harrison vs Signal Mountain, TN
Harrison currently scores 10 points higher overall than Signal Mountain, 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 is a current EPA AirNow signal; 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
Harrison: 46/100 · Signal Mountain: 36/100
Harrison is 10 points higher.
Flood
Harrison: 54/100 · Signal Mountain: 32/100
Harrison is 22 points higher.
Harrison: FEMA NFHL flood zones: 4 features intersect this tile.
Signal Mountain: FEMA NFHL flood zones: 9 features intersect this tile.
Wind
Harrison: 13/100 · Signal Mountain: 14/100
Signal Mountain is 1 points higher.
Harrison: Wind exposure derived from ingested design wind / climatology tiles.
Signal Mountain: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Harrison: 50/100 · Signal Mountain: 50/100
No gap.
Harrison: Lightning exposure derived from ingested climatology tiles.
Signal Mountain: Lightning exposure derived from ingested climatology tiles.
Tornado
Harrison: 50/100 · Signal Mountain: 8/100
Harrison is 42 points higher.
Harrison: Tornado risk derived from NOAA SPC historical reports.
Signal Mountain: Tornado risk derived from NOAA SPC historical reports.
Hail
Harrison: 50/100 · Signal Mountain: 38/100
Harrison is 12 points higher.
Harrison: Hail risk derived from NOAA SPC historical reports.
Signal Mountain: Hail risk derived from NOAA SPC historical reports.
Storm surge
Harrison: Unavailable · Signal Mountain: Unavailable
A score difference cannot be calculated without both sources.
Harrison: Storm surge model is not available for this location yet.
Signal Mountain: Storm surge model is not available for this location yet.
Wildfire
Harrison: 67/100 · Signal Mountain: 71/100
Signal Mountain is 4 points higher.
Harrison: Wildfire exposure derived from ingested fire potential tiles.
Signal Mountain: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Harrison: 36/100 · Signal Mountain: 36/100
No gap.
Harrison: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Signal Mountain: Air quality signal derived from the latest EPA AirNow combined AQI grid.