City vs city
Fort Mill vs Rock Hill, SC
Rock Hill currently scores 2 points higher overall than Fort Mill, with the largest gap in ingested air quality.
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
Fort Mill: 40/100 · Rock Hill: 42/100
Rock Hill is 2 points higher.
Flood
Fort Mill: 27/100 · Rock Hill: 33/100
Rock Hill is 6 points higher.
Fort Mill: FEMA NFHL flood zones: 7 features intersect this tile.
Rock Hill: FEMA NFHL flood zones: 13 features intersect this tile.
Wind
Fort Mill: 19/100 · Rock Hill: 19/100
No gap.
Fort Mill: Wind exposure derived from ingested design wind / climatology tiles.
Rock Hill: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Fort Mill: 45/100 · Rock Hill: 46/100
Rock Hill is 1 points higher.
Fort Mill: Lightning exposure derived from ingested climatology tiles.
Rock Hill: Lightning exposure derived from ingested climatology tiles.
Tornado
Fort Mill: 12/100 · Rock Hill: 19/100
Rock Hill is 7 points higher.
Fort Mill: Tornado risk derived from NOAA SPC historical reports.
Rock Hill: Tornado risk derived from NOAA SPC historical reports.
Hail
Fort Mill: 93/100 · Rock Hill: 100/100
Rock Hill is 7 points higher.
Fort Mill: Hail risk derived from NOAA SPC historical reports.
Rock Hill: Hail risk derived from NOAA SPC historical reports.
Storm surge
Fort Mill: Unavailable · Rock Hill: Unavailable
A score difference cannot be calculated without both sources.
Fort Mill: Storm surge model is not available for this location yet.
Rock Hill: Storm surge model is not available for this location yet.
Wildfire
Fort Mill: 50/100 · Rock Hill: 52/100
Rock Hill is 2 points higher.
Fort Mill: Wildfire exposure derived from ingested fire potential tiles.
Rock Hill: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Fort Mill: 35/100 · Rock Hill: 24/100
Fort Mill is 11 points higher.
Fort Mill: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Rock Hill: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.