City vs city
Powell vs Rocky Top, TN
Rocky Top currently scores 3 points higher overall than Powell, with the largest gap in flood.
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
Powell: 37/100 · Rocky Top: 40/100
Rocky Top is 3 points higher.
Flood
Powell: 40/100 · Rocky Top: 100/100
Rocky Top is 60 points higher.
Powell: FEMA NFHL flood zones: 12 features intersect this tile.
Rocky Top: FEMA NFHL flood zones: 4 features intersect this tile.
Wind
Powell: 13/100 · Rocky Top: 13/100
No gap.
Powell: Wind exposure derived from ingested design wind / climatology tiles.
Rocky Top: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Powell: 41/100 · Rocky Top: 42/100
Rocky Top is 1 points higher.
Powell: Lightning exposure derived from ingested climatology tiles.
Rocky Top: Lightning exposure derived from ingested climatology tiles.
Tornado
Powell: 23/100 · Rocky Top: 15/100
Powell is 8 points higher.
Powell: Tornado risk derived from NOAA SPC historical reports.
Rocky Top: Tornado risk derived from NOAA SPC historical reports.
Hail
Powell: 72/100 · Rocky Top: 24/100
Powell is 48 points higher.
Powell: Hail risk derived from NOAA SPC historical reports.
Rocky Top: Hail risk derived from NOAA SPC historical reports.
Storm surge
Powell: Unavailable · Rocky Top: Unavailable
A score difference cannot be calculated without both sources.
Powell: Storm surge model is not available for this location yet.
Rocky Top: Storm surge model is not available for this location yet.
Wildfire
Powell: 36/100 · Rocky Top: 56/100
Rocky Top is 20 points higher.
Powell: Wildfire exposure derived from ingested fire potential tiles.
Rocky Top: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Powell: 33/100 · Rocky Top: 33/100
No gap.
Powell: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Rocky Top: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.