City vs city
Awendaw vs Sullivan's Island, SC
Sullivan's Island currently scores 16 points higher overall than Awendaw, with the largest gap in tornado.
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
Awendaw: 40/100 · Sullivan's Island: 56/100
Sullivan's Island is 16 points higher.
Flood
Awendaw: 79/100 · Sullivan's Island: 69/100
Awendaw is 10 points higher.
Awendaw: FEMA NFHL flood zones: 18 features intersect this tile.
Sullivan's Island: FEMA NFHL flood zones: 18 features intersect this tile.
Wind
Awendaw: 53/100 · Sullivan's Island: 53/100
No gap.
Awendaw: Wind exposure derived from ingested design wind / climatology tiles.
Sullivan's Island: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Awendaw: 45/100 · Sullivan's Island: 43/100
Awendaw is 2 points higher.
Awendaw: Lightning exposure derived from ingested climatology tiles.
Sullivan's Island: Lightning exposure derived from ingested climatology tiles.
Tornado
Awendaw: 4/100 · Sullivan's Island: 77/100
Sullivan's Island is 73 points higher.
Awendaw: Tornado risk derived from NOAA SPC historical reports.
Sullivan's Island: Tornado risk derived from NOAA SPC historical reports.
Hail
Awendaw: 5/100 · Sullivan's Island: 74/100
Sullivan's Island is 69 points higher.
Awendaw: Hail risk derived from NOAA SPC historical reports.
Sullivan's Island: Hail risk derived from NOAA SPC historical reports.
Storm surge
Awendaw: 99/100 · Sullivan's Island: 98/100
Awendaw is 1 points higher.
Awendaw: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Sullivan's Island: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Wildfire
Awendaw: 16/100 · Sullivan's Island: 11/100
Awendaw is 5 points higher.
Awendaw: Wildfire exposure derived from ingested fire potential tiles.
Sullivan's Island: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Awendaw: 16/100 · Sullivan's Island: 26/100
Sullivan's Island is 10 points higher.
Awendaw: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Sullivan's Island: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.