City vs city
Keystone vs Rapid City, SD
Keystone currently scores 6 points higher overall than Rapid City, 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 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
Keystone: 49/100 · Rapid City: 43/100
Keystone is 6 points higher.
Flood
Keystone: 44/100 · Rapid City: 53/100
Rapid City is 9 points higher.
Keystone: FEMA NFHL flood zones: 4 features intersect this tile.
Rapid City: FEMA NFHL flood zones: 8 features intersect this tile.
Wind
Keystone: 19/100 · Rapid City: 20/100
Rapid City is 1 points higher.
Keystone: Wind exposure derived from ingested design wind / climatology tiles.
Rapid City: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Keystone: 27/100 · Rapid City: 23/100
Keystone is 4 points higher.
Keystone: Lightning exposure derived from ingested climatology tiles.
Rapid City: Lightning exposure derived from ingested climatology tiles.
Tornado
Keystone: 0/100 · Rapid City: 23/100
Rapid City is 23 points higher.
Keystone: Tornado risk derived from NOAA SPC historical reports.
Rapid City: Tornado risk derived from NOAA SPC historical reports.
Hail
Keystone: 100/100 · Rapid City: 100/100
No gap.
Keystone: Hail risk derived from NOAA SPC historical reports.
Rapid City: Hail risk derived from NOAA SPC historical reports.
Storm surge
Keystone: Unavailable · Rapid City: Unavailable
A score difference cannot be calculated without both sources.
Keystone: Storm surge model is not available for this location yet.
Rapid City: Storm surge model is not available for this location yet.
Wildfire
Keystone: 69/100 · Rapid City: 57/100
Keystone is 12 points higher.
Keystone: Wildfire exposure derived from ingested fire potential tiles.
Rapid City: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Keystone: 35/100 · Rapid City: 28/100
Keystone is 7 points higher.
Keystone: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Rapid City: Air quality signal derived from the latest EPA AirNow combined AQI grid.