City vs city
James Island vs Sullivan's Island, SC
James Island currently scores 5 points higher overall than Sullivan's 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 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 · Sullivan's Island: 56/100
James Island is 5 points higher.
Flood
James Island: 89/100 · Sullivan's Island: 69/100
James Island is 20 points higher.
James Island: FEMA NFHL flood zones: 33 features intersect this tile.
Sullivan's Island: FEMA NFHL flood zones: 18 features intersect this tile.
Wind
James Island: 52/100 · Sullivan's Island: 53/100
Sullivan's Island is 1 points higher.
James Island: Wind exposure derived from ingested design wind / climatology tiles.
Sullivan's Island: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
James Island: 45/100 · Sullivan's Island: 43/100
James Island is 2 points higher.
James Island: Lightning exposure derived from ingested climatology tiles.
Sullivan's Island: Lightning exposure derived from ingested climatology tiles.
Tornado
James Island: 65/100 · Sullivan's Island: 77/100
Sullivan's Island is 12 points higher.
James Island: Tornado risk derived from NOAA SPC historical reports.
Sullivan's Island: Tornado risk derived from NOAA SPC historical reports.
Hail
James Island: 100/100 · Sullivan's Island: 74/100
James Island is 26 points higher.
James Island: Hail risk derived from NOAA SPC historical reports.
Sullivan's Island: Hail risk derived from NOAA SPC historical reports.
Storm surge
James Island: 98/100 · Sullivan's Island: 98/100
No gap.
James Island: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Sullivan's Island: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Wildfire
James Island: 15/100 · Sullivan's Island: 11/100
James Island is 4 points higher.
James Island: Wildfire exposure derived from ingested fire potential tiles.
Sullivan's Island: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
James Island: 26/100 · Sullivan's Island: 26/100
No gap.
James Island: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Sullivan's Island: Air quality signal derived from the latest EPA AirNow combined AQI grid.