City vs city
Charleston vs Gaston, SC
Charleston currently scores 7 points higher overall than Gaston, with the largest gap in wildfire.
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 · Gaston: 54/100
Charleston is 7 points higher.
Flood
Charleston: 89/100 · Gaston: 43/100
Charleston is 46 points higher.
Charleston: FEMA NFHL flood zones: 33 features intersect this tile.
Gaston: FEMA NFHL flood zones: 12 features intersect this tile.
Wind
Charleston: 52/100 · Gaston: 25/100
Charleston is 27 points higher.
Charleston: Wind exposure derived from ingested design wind / climatology tiles.
Gaston: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Charleston: 45/100 · Gaston: 70/100
Gaston is 25 points higher.
Charleston: Lightning exposure derived from ingested climatology tiles.
Gaston: Lightning exposure derived from ingested climatology tiles.
Tornado
Charleston: 65/100 · Gaston: 50/100
Charleston is 15 points higher.
Charleston: Tornado risk derived from NOAA SPC historical reports.
Gaston: Tornado risk derived from NOAA SPC historical reports.
Hail
Charleston: 100/100 · Gaston: 86/100
Charleston is 14 points higher.
Charleston: Hail risk derived from NOAA SPC historical reports.
Gaston: Hail risk derived from NOAA SPC historical reports.
Storm surge
Charleston: 98/100 · Gaston: Unavailable
A score difference cannot be calculated without both sources.
Charleston: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Gaston: Storm surge model is not available for this location yet.
Wildfire
Charleston: 15/100 · Gaston: 77/100
Gaston is 62 points higher.
Charleston: Wildfire exposure derived from ingested fire potential tiles.
Gaston: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Charleston: 26/100 · Gaston: 27/100
Gaston is 1 points higher.
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.
Gaston: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.