City vs city
Grass Range vs Lewistown, MT
Lewistown currently scores 9 points higher overall than Grass Range, 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
Grass Range: 24/100 · Lewistown: 33/100
Lewistown is 9 points higher.
Flood
Grass Range: 26/100 · Lewistown: 32/100
Lewistown is 6 points higher.
Grass Range: FEMA NFHL flood zones: 1 features intersect this tile.
Lewistown: FEMA NFHL flood zones: 6 features intersect this tile.
Wind
Grass Range: 17/100 · Lewistown: 17/100
No gap.
Grass Range: Wind exposure derived from ingested design wind / climatology tiles.
Lewistown: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Grass Range: 25/100 · Lewistown: 21/100
Grass Range is 4 points higher.
Grass Range: Lightning exposure derived from ingested climatology tiles.
Lewistown: Lightning exposure derived from ingested climatology tiles.
Tornado
Grass Range: 0/100 · Lewistown: 19/100
Lewistown is 19 points higher.
Grass Range: Tornado risk derived from NOAA SPC historical reports.
Lewistown: Tornado risk derived from NOAA SPC historical reports.
Hail
Grass Range: 10/100 · Lewistown: 93/100
Lewistown is 83 points higher.
Grass Range: Hail risk derived from NOAA SPC historical reports.
Lewistown: Hail risk derived from NOAA SPC historical reports.
Storm surge
Grass Range: Unavailable · Lewistown: Unavailable
A score difference cannot be calculated without both sources.
Grass Range: Storm surge model is not available for this location yet.
Lewistown: Storm surge model is not available for this location yet.
Wildfire
Grass Range: 53/100 · Lewistown: 34/100
Grass Range is 19 points higher.
Grass Range: Wildfire exposure derived from ingested fire potential tiles.
Lewistown: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Grass Range: 15/100 · Lewistown: 15/100
No gap.
Grass Range: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Lewistown: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.