City vs city
Bison vs Rapid City, SD
Rapid City currently scores 12 points higher overall than Bison, with the largest gap in wildfire.
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
Bison: 30/100 · Rapid City: 42/100
Rapid City is 12 points higher.
Flood
Bison: Unavailable · Rapid City: 49/100
A score difference cannot be calculated without both sources.
Bison: Flood model is not available for this location yet.
Rapid City: FEMA NFHL flood zones: 5 features intersect this tile.
Wind
Bison: 19/100 · Rapid City: 20/100
Rapid City is 1 points higher.
Bison: Wind exposure derived from ingested design wind / climatology tiles.
Rapid City: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Bison: 25/100 · Rapid City: 24/100
Bison is 1 points higher.
Bison: Lightning exposure derived from ingested climatology tiles.
Rapid City: Lightning exposure derived from ingested climatology tiles.
Tornado
Bison: 23/100 · Rapid City: 8/100
Bison is 15 points higher.
Bison: Tornado risk derived from NOAA SPC historical reports.
Rapid City: Tornado risk derived from NOAA SPC historical reports.
Hail
Bison: 86/100 · Rapid City: 100/100
Rapid City is 14 points higher.
Bison: Hail risk derived from NOAA SPC historical reports.
Rapid City: Hail risk derived from NOAA SPC historical reports.
Storm surge
Bison: Unavailable · Rapid City: Unavailable
A score difference cannot be calculated without both sources.
Bison: Storm surge model is not available for this location yet.
Rapid City: Storm surge model is not available for this location yet.
Wildfire
Bison: 41/100 · Rapid City: 67/100
Rapid City is 26 points higher.
Bison: Wildfire exposure derived from ingested fire potential tiles.
Rapid City: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Bison: 19/100 · Rapid City: 29/100
Rapid City is 10 points higher.
Bison: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Rapid City: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.