City vs city
Mountain Plains vs North Spearfish, SD
Mountain Plains currently scores 10 points higher overall than North Spearfish, with the largest gap in hail.
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 · North Spearfish: 37/100
Mountain Plains is 10 points higher.
Flood
Mountain Plains: 47/100 · North Spearfish: 59/100
North Spearfish is 12 points higher.
Mountain Plains: FEMA NFHL flood zones: 3 features intersect this tile.
North Spearfish: FEMA NFHL flood zones: 5 features intersect this tile.
Wind
Mountain Plains: 19/100 · North Spearfish: 19/100
No gap.
Mountain Plains: Wind exposure derived from ingested design wind / climatology tiles.
North Spearfish: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Mountain Plains: 28/100 · North Spearfish: 30/100
North Spearfish is 2 points higher.
Mountain Plains: Lightning exposure derived from ingested climatology tiles.
North Spearfish: Lightning exposure derived from ingested climatology tiles.
Tornado
Mountain Plains: 0/100 · North Spearfish: 8/100
North Spearfish is 8 points higher.
Mountain Plains: Tornado risk derived from NOAA SPC historical reports.
North Spearfish: Tornado risk derived from NOAA SPC historical reports.
Hail
Mountain Plains: 100/100 · North Spearfish: 64/100
Mountain Plains is 36 points higher.
Mountain Plains: Hail risk derived from NOAA SPC historical reports.
North Spearfish: Hail risk derived from NOAA SPC historical reports.
Storm surge
Mountain Plains: Unavailable · North Spearfish: Unavailable
A score difference cannot be calculated without both sources.
Mountain Plains: Storm surge model is not available for this location yet.
North Spearfish: Storm surge model is not available for this location yet.
Wildfire
Mountain Plains: 59/100 · North Spearfish: 51/100
Mountain Plains is 8 points higher.
Mountain Plains: Wildfire exposure derived from ingested fire potential tiles.
North Spearfish: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Mountain Plains: 28/100 · North 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.
North 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.