City vs city
Edgemont vs Keystone, SD
Keystone currently scores 4 points higher overall than Edgemont, 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
Edgemont: 45/100 · Keystone: 49/100
Keystone is 4 points higher.
Flood
Edgemont: 41/100 · Keystone: 44/100
Keystone is 3 points higher.
Edgemont: FEMA NFHL flood zones: 3 features intersect this tile.
Keystone: FEMA NFHL flood zones: 4 features intersect this tile.
Wind
Edgemont: 19/100 · Keystone: 19/100
No gap.
Edgemont: Wind exposure derived from ingested design wind / climatology tiles.
Keystone: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Edgemont: 39/100 · Keystone: 27/100
Edgemont is 12 points higher.
Edgemont: Lightning exposure derived from ingested climatology tiles.
Keystone: Lightning exposure derived from ingested climatology tiles.
Tornado
Edgemont: 27/100 · Keystone: 0/100
Edgemont is 27 points higher.
Edgemont: Tornado risk derived from NOAA SPC historical reports.
Keystone: Tornado risk derived from NOAA SPC historical reports.
Hail
Edgemont: 100/100 · Keystone: 100/100
No gap.
Edgemont: Hail risk derived from NOAA SPC historical reports.
Keystone: Hail risk derived from NOAA SPC historical reports.
Storm surge
Edgemont: Unavailable · Keystone: Unavailable
A score difference cannot be calculated without both sources.
Edgemont: Storm surge model is not available for this location yet.
Keystone: Storm surge model is not available for this location yet.
Wildfire
Edgemont: 52/100 · Keystone: 69/100
Keystone is 17 points higher.
Edgemont: Wildfire exposure derived from ingested fire potential tiles.
Keystone: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Edgemont: 40/100 · Keystone: 35/100
Edgemont is 5 points higher.
Edgemont: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Keystone: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.