City vs city
Charleston vs South Sumter, SC
Charleston currently scores 19 points higher overall than South Sumter, with the largest gap in flood.
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 · South Sumter: 42/100
Charleston is 19 points higher.
Flood
Charleston: 89/100 · South Sumter: 34/100
Charleston is 55 points higher.
Charleston: FEMA NFHL flood zones: 33 features intersect this tile.
South Sumter: FEMA NFHL flood zones: 6 features intersect this tile.
Wind
Charleston: 52/100 · South Sumter: 31/100
Charleston is 21 points higher.
Charleston: Wind exposure derived from ingested design wind / climatology tiles.
South Sumter: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Charleston: 45/100 · South Sumter: 74/100
South Sumter is 29 points higher.
Charleston: Lightning exposure derived from ingested climatology tiles.
South Sumter: Lightning exposure derived from ingested climatology tiles.
Tornado
Charleston: 65/100 · South Sumter: 15/100
Charleston is 50 points higher.
Charleston: Tornado risk derived from NOAA SPC historical reports.
South Sumter: Tornado risk derived from NOAA SPC historical reports.
Hail
Charleston: 100/100 · South Sumter: 49/100
Charleston is 51 points higher.
Charleston: Hail risk derived from NOAA SPC historical reports.
South Sumter: Hail risk derived from NOAA SPC historical reports.
Storm surge
Charleston: 98/100 · South Sumter: Unavailable
A score difference cannot be calculated without both sources.
Charleston: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
South Sumter: Storm surge model is not available for this location yet.
Wildfire
Charleston: 15/100 · South Sumter: 67/100
South Sumter is 52 points higher.
Charleston: Wildfire exposure derived from ingested fire potential tiles.
South Sumter: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Charleston: 26/100 · South Sumter: 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.
South Sumter: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.