City vs city
Basin vs Helena, MT
Helena currently scores 8 points higher overall than Basin, 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
Basin: 26/100 · Helena: 34/100
Helena is 8 points higher.
Flood
Basin: Unavailable · Helena: 17/100
A score difference cannot be calculated without both sources.
Basin: Flood model is not available for this location yet.
Helena: FEMA NFHL flood zones: 4 features intersect this tile.
Wind
Basin: 15/100 · Helena: 15/100
No gap.
Basin: Wind exposure derived from ingested design wind / climatology tiles.
Helena: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Basin: 8/100 · Helena: 9/100
Helena is 1 points higher.
Basin: Lightning exposure derived from ingested climatology tiles.
Helena: Lightning exposure derived from ingested climatology tiles.
Tornado
Basin: 0/100 · Helena: 4/100
Helena is 4 points higher.
Basin: Tornado risk derived from NOAA SPC historical reports.
Helena: Tornado risk derived from NOAA SPC historical reports.
Hail
Basin: 36/100 · Helena: 100/100
Helena is 64 points higher.
Basin: Hail risk derived from NOAA SPC historical reports.
Helena: Hail risk derived from NOAA SPC historical reports.
Storm surge
Basin: Unavailable · Helena: Unavailable
A score difference cannot be calculated without both sources.
Basin: Storm surge model is not available for this location yet.
Helena: Storm surge model is not available for this location yet.
Wildfire
Basin: 80/100 · Helena: 77/100
Basin is 3 points higher.
Basin: Wildfire exposure derived from ingested fire potential tiles.
Helena: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Basin: 15/100 · Helena: 13/100
Basin is 2 points higher.
Basin: 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.