City vs city
Great Falls vs Rocky Boy West, MT
Great Falls currently scores 15 points higher overall than Rocky Boy West, 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
Great Falls: 32/100 · Rocky Boy West: 17/100
Great Falls is 15 points higher.
Flood
Great Falls: 30/100 · Rocky Boy West: Unavailable
A score difference cannot be calculated without both sources.
Great Falls: FEMA NFHL flood zones: 4 features intersect this tile.
Rocky Boy West: Flood model is not available for this location yet.
Wind
Great Falls: 16/100 · Rocky Boy West: 16/100
No gap.
Great Falls: Wind exposure derived from ingested design wind / climatology tiles.
Rocky Boy West: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Great Falls: 11/100 · Rocky Boy West: 12/100
Rocky Boy West is 1 points higher.
Great Falls: Lightning exposure derived from ingested climatology tiles.
Rocky Boy West: Lightning exposure derived from ingested climatology tiles.
Tornado
Great Falls: 8/100 · Rocky Boy West: 0/100
Great Falls is 8 points higher.
Great Falls: Tornado risk derived from NOAA SPC historical reports.
Rocky Boy West: Tornado risk derived from NOAA SPC historical reports.
Hail
Great Falls: 100/100 · Rocky Boy West: 10/100
Great Falls is 90 points higher.
Great Falls: Hail risk derived from NOAA SPC historical reports.
Rocky Boy West: Hail risk derived from NOAA SPC historical reports.
Storm surge
Great Falls: Unavailable · Rocky Boy West: Unavailable
A score difference cannot be calculated without both sources.
Great Falls: Storm surge model is not available for this location yet.
Rocky Boy West: Storm surge model is not available for this location yet.
Wildfire
Great Falls: 33/100 · Rocky Boy West: 52/100
Rocky Boy West is 19 points higher.
Great Falls: Wildfire exposure derived from ingested fire potential tiles.
Rocky Boy West: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Great Falls: 29/100 · Rocky Boy West: 14/100
Great Falls is 15 points higher.
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.
Rocky Boy West: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.