City vs city
Kiawah Island vs Rock Hill, SC
Kiawah Island currently scores 9 points higher overall than Rock Hill, 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
Kiawah Island: 51/100 · Rock Hill: 42/100
Kiawah Island is 9 points higher.
Flood
Kiawah Island: 100/100 · Rock Hill: 33/100
Kiawah Island is 67 points higher.
Kiawah Island: FEMA NFHL flood zones: 21 features intersect this tile.
Rock Hill: FEMA NFHL flood zones: 13 features intersect this tile.
Wind
Kiawah Island: 52/100 · Rock Hill: 19/100
Kiawah Island is 33 points higher.
Kiawah Island: Wind exposure derived from ingested design wind / climatology tiles.
Rock Hill: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Kiawah Island: 45/100 · Rock Hill: 46/100
Rock Hill is 1 points higher.
Kiawah Island: Lightning exposure derived from ingested climatology tiles.
Rock Hill: Lightning exposure derived from ingested climatology tiles.
Tornado
Kiawah Island: 15/100 · Rock Hill: 19/100
Rock Hill is 4 points higher.
Kiawah Island: Tornado risk derived from NOAA SPC historical reports.
Rock Hill: Tornado risk derived from NOAA SPC historical reports.
Hail
Kiawah Island: 17/100 · Rock Hill: 100/100
Rock Hill is 83 points higher.
Kiawah Island: Hail risk derived from NOAA SPC historical reports.
Rock Hill: Hail risk derived from NOAA SPC historical reports.
Storm surge
Kiawah Island: 98/100 · Rock Hill: Unavailable
A score difference cannot be calculated without both sources.
Kiawah Island: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Rock Hill: Storm surge model is not available for this location yet.
Wildfire
Kiawah Island: 51/100 · Rock Hill: 52/100
Rock Hill is 1 points higher.
Kiawah Island: Wildfire exposure derived from ingested fire potential tiles.
Rock Hill: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Kiawah Island: 26/100 · Rock Hill: 24/100
Kiawah Island is 2 points higher.
Kiawah Island: 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.