City vs city
Helena vs Riverview Colony, MT
Helena currently scores 20 points higher overall than Riverview Colony, 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
Helena: 34/100 · Riverview Colony: 14/100
Helena is 20 points higher.
Flood
Helena: 17/100 · Riverview Colony: Unavailable
A score difference cannot be calculated without both sources.
Helena: FEMA NFHL flood zones: 4 features intersect this tile.
Riverview Colony: Flood model is not available for this location yet.
Wind
Helena: 15/100 · Riverview Colony: 16/100
Riverview Colony is 1 points higher.
Helena: Wind exposure derived from ingested design wind / climatology tiles.
Riverview Colony: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Helena: 9/100 · Riverview Colony: 7/100
Helena is 2 points higher.
Helena: Lightning exposure derived from ingested climatology tiles.
Riverview Colony: Lightning exposure derived from ingested climatology tiles.
Tornado
Helena: 4/100 · Riverview Colony: 0/100
Helena is 4 points higher.
Helena: Tornado risk derived from NOAA SPC historical reports.
Riverview Colony: Tornado risk derived from NOAA SPC historical reports.
Hail
Helena: 100/100 · Riverview Colony: 2/100
Helena is 98 points higher.
Helena: Hail risk derived from NOAA SPC historical reports.
Riverview Colony: Hail risk derived from NOAA SPC historical reports.
Storm surge
Helena: Unavailable · Riverview Colony: Unavailable
A score difference cannot be calculated without both sources.
Helena: Storm surge model is not available for this location yet.
Riverview Colony: Storm surge model is not available for this location yet.
Wildfire
Helena: 77/100 · Riverview Colony: 28/100
Helena is 49 points higher.
Helena: Wildfire exposure derived from ingested fire potential tiles.
Riverview Colony: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Helena: 13/100 · Riverview Colony: 28/100
Riverview Colony is 15 points higher.
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.
Riverview Colony: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.