City vs city
Knoxville vs Philadelphia, TN
Knoxville currently scores 9 points higher overall than Philadelphia, 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
Knoxville: 42/100 · Philadelphia: 33/100
Knoxville is 9 points higher.
Flood
Knoxville: 29/100 · Philadelphia: 50/100
Philadelphia is 21 points higher.
Knoxville: FEMA NFHL flood zones: 7 features intersect this tile.
Philadelphia: FEMA NFHL flood zones: 8 features intersect this tile.
Wind
Knoxville: 13/100 · Philadelphia: 13/100
No gap.
Knoxville: Wind exposure derived from ingested design wind / climatology tiles.
Philadelphia: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Knoxville: 40/100 · Philadelphia: 45/100
Philadelphia is 5 points higher.
Knoxville: Lightning exposure derived from ingested climatology tiles.
Philadelphia: Lightning exposure derived from ingested climatology tiles.
Tornado
Knoxville: 31/100 · Philadelphia: 0/100
Knoxville is 31 points higher.
Knoxville: Tornado risk derived from NOAA SPC historical reports.
Philadelphia: Tornado risk derived from NOAA SPC historical reports.
Hail
Knoxville: 100/100 · Philadelphia: 14/100
Knoxville is 86 points higher.
Knoxville: Hail risk derived from NOAA SPC historical reports.
Philadelphia: Hail risk derived from NOAA SPC historical reports.
Storm surge
Knoxville: Unavailable · Philadelphia: Unavailable
A score difference cannot be calculated without both sources.
Knoxville: Storm surge model is not available for this location yet.
Philadelphia: Storm surge model is not available for this location yet.
Wildfire
Knoxville: 48/100 · Philadelphia: 41/100
Knoxville is 7 points higher.
Knoxville: Wildfire exposure derived from ingested fire potential tiles.
Philadelphia: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Knoxville: 33/100 · Philadelphia: 37/100
Philadelphia is 4 points higher.
Knoxville: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Philadelphia: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.