City vs city
Custer vs Great Falls, MT
Great Falls currently scores 8 points higher overall than Custer, 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
Custer: 24/100 · Great Falls: 32/100
Great Falls is 8 points higher.
Flood
Custer: 37/100 · Great Falls: 30/100
Custer is 7 points higher.
Custer: FEMA NFHL flood zones: 10 features intersect this tile.
Great Falls: FEMA NFHL flood zones: 4 features intersect this tile.
Wind
Custer: 18/100 · Great Falls: 16/100
Custer is 2 points higher.
Custer: Wind exposure derived from ingested design wind / climatology tiles.
Great Falls: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Custer: 10/100 · Great Falls: 11/100
Great Falls is 1 points higher.
Custer: Lightning exposure derived from ingested climatology tiles.
Great Falls: Lightning exposure derived from ingested climatology tiles.
Tornado
Custer: 4/100 · Great Falls: 8/100
Great Falls is 4 points higher.
Custer: Tornado risk derived from NOAA SPC historical reports.
Great Falls: Tornado risk derived from NOAA SPC historical reports.
Hail
Custer: 23/100 · Great Falls: 100/100
Great Falls is 77 points higher.
Custer: Hail risk derived from NOAA SPC historical reports.
Great Falls: Hail risk derived from NOAA SPC historical reports.
Storm surge
Custer: Unavailable · Great Falls: Unavailable
A score difference cannot be calculated without both sources.
Custer: Storm surge model is not available for this location yet.
Great Falls: Storm surge model is not available for this location yet.
Wildfire
Custer: 60/100 · Great Falls: 33/100
Custer is 27 points higher.
Custer: Wildfire exposure derived from ingested fire potential tiles.
Great Falls: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Custer: 18/100 · Great Falls: 29/100
Great Falls is 11 points higher.
Custer: 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.