City vs city
Big Sky vs Great Falls, MT
Great Falls currently scores 10 points higher overall than Big Sky, 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
Big Sky: 22/100 · Great Falls: 32/100
Great Falls is 10 points higher.
Flood
Big Sky: 26/100 · Great Falls: 30/100
Great Falls is 4 points higher.
Big Sky: FEMA NFHL flood zones: 3 features intersect this tile.
Great Falls: FEMA NFHL flood zones: 4 features intersect this tile.
Wind
Big Sky: 15/100 · Great Falls: 16/100
Great Falls is 1 points higher.
Big Sky: Wind exposure derived from ingested design wind / climatology tiles.
Great Falls: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Big Sky: 9/100 · Great Falls: 11/100
Great Falls is 2 points higher.
Big Sky: Lightning exposure derived from ingested climatology tiles.
Great Falls: Lightning exposure derived from ingested climatology tiles.
Tornado
Big Sky: 0/100 · Great Falls: 8/100
Great Falls is 8 points higher.
Big Sky: Tornado risk derived from NOAA SPC historical reports.
Great Falls: Tornado risk derived from NOAA SPC historical reports.
Hail
Big Sky: 8/100 · Great Falls: 100/100
Great Falls is 92 points higher.
Big Sky: Hail risk derived from NOAA SPC historical reports.
Great Falls: Hail risk derived from NOAA SPC historical reports.
Storm surge
Big Sky: Unavailable · Great Falls: Unavailable
A score difference cannot be calculated without both sources.
Big Sky: Storm surge model is not available for this location yet.
Great Falls: Storm surge model is not available for this location yet.
Wildfire
Big Sky: 60/100 · Great Falls: 33/100
Big Sky is 27 points higher.
Big Sky: Wildfire exposure derived from ingested fire potential tiles.
Great Falls: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Big Sky: 14/100 · Great Falls: 29/100
Great Falls is 15 points higher.
Big Sky: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Great Falls: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.