City vs city
Columbia vs North Charleston, SC
North Charleston currently scores 10 points higher overall than Columbia, with the largest gap in wind.
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
Columbia: 46/100 · North Charleston: 56/100
North Charleston is 10 points higher.
Flood
Columbia: 37/100 · North Charleston: 39/100
North Charleston is 2 points higher.
Columbia: FEMA NFHL flood zones: 7 features intersect this tile.
North Charleston: FEMA NFHL flood zones: 13 features intersect this tile.
Wind
Columbia: 24/100 · North Charleston: 48/100
North Charleston is 24 points higher.
Columbia: Wind exposure derived from ingested design wind / climatology tiles.
North Charleston: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Columbia: 72/100 · North Charleston: 56/100
Columbia is 16 points higher.
Columbia: Lightning exposure derived from ingested climatology tiles.
North Charleston: Lightning exposure derived from ingested climatology tiles.
Tornado
Columbia: 12/100 · North Charleston: 27/100
North Charleston is 15 points higher.
Columbia: Tornado risk derived from NOAA SPC historical reports.
North Charleston: Tornado risk derived from NOAA SPC historical reports.
Hail
Columbia: 83/100 · North Charleston: 100/100
North Charleston is 17 points higher.
Columbia: Hail risk derived from NOAA SPC historical reports.
North Charleston: Hail risk derived from NOAA SPC historical reports.
Storm surge
Columbia: Unavailable · North Charleston: 83/100
A score difference cannot be calculated without both sources.
Columbia: Storm surge model is not available for this location yet.
North Charleston: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Wildfire
Columbia: 67/100 · North Charleston: 72/100
North Charleston is 5 points higher.
Columbia: Wildfire exposure derived from ingested fire potential tiles.
North Charleston: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Columbia: 26/100 · North Charleston: 26/100
No gap.
Columbia: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
North 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.