City vs city
Charleston vs Kiawah Island, SC
Charleston currently scores 10 points higher overall than Kiawah Island, 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
Charleston: 61/100 · Kiawah Island: 51/100
Charleston is 10 points higher.
Flood
Charleston: 89/100 · Kiawah Island: 100/100
Kiawah Island is 11 points higher.
Charleston: FEMA NFHL flood zones: 33 features intersect this tile.
Kiawah Island: FEMA NFHL flood zones: 21 features intersect this tile.
Wind
Charleston: 52/100 · Kiawah Island: 52/100
No gap.
Charleston: Wind exposure derived from ingested design wind / climatology tiles.
Kiawah Island: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Charleston: 45/100 · Kiawah Island: 45/100
No gap.
Charleston: Lightning exposure derived from ingested climatology tiles.
Kiawah Island: Lightning exposure derived from ingested climatology tiles.
Tornado
Charleston: 65/100 · Kiawah Island: 15/100
Charleston is 50 points higher.
Charleston: Tornado risk derived from NOAA SPC historical reports.
Kiawah Island: Tornado risk derived from NOAA SPC historical reports.
Hail
Charleston: 100/100 · Kiawah Island: 17/100
Charleston is 83 points higher.
Charleston: Hail risk derived from NOAA SPC historical reports.
Kiawah Island: Hail risk derived from NOAA SPC historical reports.
Storm surge
Charleston: 98/100 · Kiawah Island: 98/100
No gap.
Charleston: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Kiawah Island: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Wildfire
Charleston: 15/100 · Kiawah Island: 51/100
Kiawah Island is 36 points higher.
Charleston: Wildfire exposure derived from ingested fire potential tiles.
Kiawah Island: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Charleston: 26/100 · Kiawah Island: 26/100
No gap.
Charleston: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
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.