City vs city
Charlo vs Helena, MT
Helena currently scores 8 points higher overall than Charlo, 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
Charlo: 26/100 · Helena: 34/100
Helena is 8 points higher.
Flood
Charlo: 38/100 · Helena: 17/100
Charlo is 21 points higher.
Charlo: FEMA NFHL flood zones: 5 features intersect this tile.
Helena: FEMA NFHL flood zones: 4 features intersect this tile.
Wind
Charlo: 14/100 · Helena: 15/100
Helena is 1 points higher.
Charlo: Wind exposure derived from ingested design wind / climatology tiles.
Helena: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Charlo: 16/100 · Helena: 9/100
Charlo is 7 points higher.
Charlo: Lightning exposure derived from ingested climatology tiles.
Helena: Lightning exposure derived from ingested climatology tiles.
Tornado
Charlo: 0/100 · Helena: 4/100
Helena is 4 points higher.
Charlo: Tornado risk derived from NOAA SPC historical reports.
Helena: Tornado risk derived from NOAA SPC historical reports.
Hail
Charlo: 24/100 · Helena: 100/100
Helena is 76 points higher.
Charlo: Hail risk derived from NOAA SPC historical reports.
Helena: Hail risk derived from NOAA SPC historical reports.
Storm surge
Charlo: Unavailable · Helena: Unavailable
A score difference cannot be calculated without both sources.
Charlo: Storm surge model is not available for this location yet.
Helena: Storm surge model is not available for this location yet.
Wildfire
Charlo: 53/100 · Helena: 77/100
Helena is 24 points higher.
Charlo: Wildfire exposure derived from ingested fire potential tiles.
Helena: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Charlo: 12/100 · Helena: 13/100
Helena is 1 points higher.
Charlo: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Helena: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.