City vs city
James Island vs Rock Hill, SC
James Island currently scores 19 points higher overall than Rock Hill, 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 is a current EPA AirNow signal; 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
James Island: 61/100 · Rock Hill: 42/100
James Island is 19 points higher.
Flood
James Island: 89/100 · Rock Hill: 33/100
James Island is 56 points higher.
James Island: FEMA NFHL flood zones: 33 features intersect this tile.
Rock Hill: FEMA NFHL flood zones: 13 features intersect this tile.
Wind
James Island: 52/100 · Rock Hill: 19/100
James Island is 33 points higher.
James Island: Wind exposure derived from ingested design wind / climatology tiles.
Rock Hill: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
James Island: 45/100 · Rock Hill: 46/100
Rock Hill is 1 points higher.
James Island: Lightning exposure derived from ingested climatology tiles.
Rock Hill: Lightning exposure derived from ingested climatology tiles.
Tornado
James Island: 65/100 · Rock Hill: 19/100
James Island is 46 points higher.
James Island: Tornado risk derived from NOAA SPC historical reports.
Rock Hill: Tornado risk derived from NOAA SPC historical reports.
Hail
James Island: 100/100 · Rock Hill: 100/100
No gap.
James Island: Hail risk derived from NOAA SPC historical reports.
Rock Hill: Hail risk derived from NOAA SPC historical reports.
Storm surge
James Island: 98/100 · Rock Hill: Unavailable
A score difference cannot be calculated without both sources.
James Island: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Rock Hill: Storm surge model is not available for this location yet.
Wildfire
James Island: 15/100 · Rock Hill: 52/100
Rock Hill is 37 points higher.
James Island: Wildfire exposure derived from ingested fire potential tiles.
Rock Hill: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
James Island: 26/100 · Rock Hill: 24/100
James Island is 2 points higher.
James Island: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Rock Hill: Air quality signal derived from the latest EPA AirNow combined AQI grid.