City vs city
Mountain Plains vs Spearfish, SD
Mountain Plains and Spearfish 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
Mountain Plains: 47/100 · Spearfish: 47/100
No gap.
Flood
Mountain Plains: 47/100 · Spearfish: 47/100
No gap.
Mountain Plains: FEMA NFHL flood zones: 3 features intersect this tile.
Spearfish: FEMA NFHL flood zones: 3 features intersect this tile.
Wind
Mountain Plains: 19/100 · Spearfish: 19/100
No gap.
Mountain Plains: Wind exposure derived from ingested design wind / climatology tiles.
Spearfish: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Mountain Plains: 28/100 · Spearfish: 28/100
No gap.
Mountain Plains: Lightning exposure derived from ingested climatology tiles.
Spearfish: Lightning exposure derived from ingested climatology tiles.
Tornado
Mountain Plains: 0/100 · Spearfish: 0/100
No gap.
Mountain Plains: Tornado risk derived from NOAA SPC historical reports.
Spearfish: Tornado risk derived from NOAA SPC historical reports.
Hail
Mountain Plains: 100/100 · Spearfish: 100/100
No gap.
Mountain Plains: Hail risk derived from NOAA SPC historical reports.
Spearfish: Hail risk derived from NOAA SPC historical reports.
Storm surge
Mountain Plains: Unavailable · Spearfish: Unavailable
A score difference cannot be calculated without both sources.
Mountain Plains: Storm surge model is not available for this location yet.
Spearfish: Storm surge model is not available for this location yet.
Wildfire
Mountain Plains: 59/100 · Spearfish: 59/100
No gap.
Mountain Plains: Wildfire exposure derived from ingested fire potential tiles.
Spearfish: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Mountain Plains: 28/100 · Spearfish: 28/100
No gap.
Mountain Plains: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Spearfish: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.