City vs city
Powells Crossroads vs Signal Mountain, TN
Signal Mountain currently scores 6 points higher overall than Powells Crossroads, 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
Powells Crossroads: 30/100 · Signal Mountain: 36/100
Signal Mountain is 6 points higher.
Flood
Powells Crossroads: 27/100 · Signal Mountain: 32/100
Signal Mountain is 5 points higher.
Powells Crossroads: FEMA NFHL flood zones: 4 features intersect this tile.
Signal Mountain: FEMA NFHL flood zones: 9 features intersect this tile.
Wind
Powells Crossroads: 14/100 · Signal Mountain: 14/100
No gap.
Powells Crossroads: Wind exposure derived from ingested design wind / climatology tiles.
Signal Mountain: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Powells Crossroads: 50/100 · Signal Mountain: 50/100
No gap.
Powells Crossroads: Lightning exposure derived from ingested climatology tiles.
Signal Mountain: Lightning exposure derived from ingested climatology tiles.
Tornado
Powells Crossroads: 4/100 · Signal Mountain: 8/100
Signal Mountain is 4 points higher.
Powells Crossroads: Tornado risk derived from NOAA SPC historical reports.
Signal Mountain: Tornado risk derived from NOAA SPC historical reports.
Hail
Powells Crossroads: 9/100 · Signal Mountain: 38/100
Signal Mountain is 29 points higher.
Powells Crossroads: Hail risk derived from NOAA SPC historical reports.
Signal Mountain: Hail risk derived from NOAA SPC historical reports.
Storm surge
Powells Crossroads: Unavailable · Signal Mountain: Unavailable
A score difference cannot be calculated without both sources.
Powells Crossroads: Storm surge model is not available for this location yet.
Signal Mountain: Storm surge model is not available for this location yet.
Wildfire
Powells Crossroads: 71/100 · Signal Mountain: 71/100
No gap.
Powells Crossroads: Wildfire exposure derived from ingested fire potential tiles.
Signal Mountain: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Powells Crossroads: 36/100 · Signal Mountain: 36/100
No gap.
Powells Crossroads: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Signal Mountain: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.