City vs city
Great Falls vs Roundup, MT
Great Falls and Roundup are tied on overall score, with the biggest factor difference in ingested air quality.
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 · Roundup: 32/100
No gap.
Flood
Great Falls: 30/100 · Roundup: 34/100
Roundup is 4 points higher.
Great Falls: FEMA NFHL flood zones: 4 features intersect this tile.
Roundup: FEMA NFHL flood zones: 6 features intersect this tile.
Wind
Great Falls: 16/100 · Roundup: 17/100
Roundup is 1 points higher.
Great Falls: Wind exposure derived from ingested design wind / climatology tiles.
Roundup: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Great Falls: 11/100 · Roundup: 15/100
Roundup is 4 points higher.
Great Falls: Lightning exposure derived from ingested climatology tiles.
Roundup: Lightning exposure derived from ingested climatology tiles.
Tornado
Great Falls: 8/100 · Roundup: 4/100
Great Falls is 4 points higher.
Great Falls: Tornado risk derived from NOAA SPC historical reports.
Roundup: Tornado risk derived from NOAA SPC historical reports.
Hail
Great Falls: 100/100 · Roundup: 100/100
No gap.
Great Falls: Hail risk derived from NOAA SPC historical reports.
Roundup: Hail risk derived from NOAA SPC historical reports.
Storm surge
Great Falls: Unavailable · Roundup: Unavailable
A score difference cannot be calculated without both sources.
Great Falls: Storm surge model is not available for this location yet.
Roundup: Storm surge model is not available for this location yet.
Wildfire
Great Falls: 33/100 · Roundup: 39/100
Roundup is 6 points higher.
Great Falls: Wildfire exposure derived from ingested fire potential tiles.
Roundup: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Great Falls: 29/100 · Roundup: 15/100
Great Falls is 14 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.
Roundup: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.