City vs city
Black Mountain vs Swannanoa, NC
Black Mountain and Swannanoa are tied on overall score, with the biggest factor difference 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
Black Mountain: 37/100 · Swannanoa: 37/100
No gap.
Flood
Black Mountain: 30/100 · Swannanoa: 30/100
No gap.
Black Mountain: FEMA NFHL flood zones: 4 features intersect this tile.
Swannanoa: FEMA NFHL flood zones: 4 features intersect this tile.
Wind
Black Mountain: 15/100 · Swannanoa: 15/100
No gap.
Black Mountain: Wind exposure derived from ingested design wind / climatology tiles.
Swannanoa: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Black Mountain: 47/100 · Swannanoa: 47/100
No gap.
Black Mountain: Lightning exposure derived from ingested climatology tiles.
Swannanoa: Lightning exposure derived from ingested climatology tiles.
Tornado
Black Mountain: 4/100 · Swannanoa: 4/100
No gap.
Black Mountain: Tornado risk derived from NOAA SPC historical reports.
Swannanoa: Tornado risk derived from NOAA SPC historical reports.
Hail
Black Mountain: 78/100 · Swannanoa: 78/100
No gap.
Black Mountain: Hail risk derived from NOAA SPC historical reports.
Swannanoa: Hail risk derived from NOAA SPC historical reports.
Storm surge
Black Mountain: Unavailable · Swannanoa: Unavailable
A score difference cannot be calculated without both sources.
Black Mountain: Storm surge model is not available for this location yet.
Swannanoa: Storm surge model is not available for this location yet.
Wildfire
Black Mountain: 50/100 · Swannanoa: 50/100
No gap.
Black Mountain: Wildfire exposure derived from ingested fire potential tiles.
Swannanoa: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Black Mountain: 32/100 · Swannanoa: 32/100
No gap.
Black Mountain: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Swannanoa: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.