City vs city
Corwin Springs vs Helena, MT
Helena currently scores 5 points higher overall than Corwin Springs, 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
Corwin Springs: 29/100 · Helena: 34/100
Helena is 5 points higher.
Flood
Corwin Springs: 26/100 · Helena: 17/100
Corwin Springs is 9 points higher.
Corwin Springs: FEMA NFHL flood zones: 1 features intersect this tile.
Helena: FEMA NFHL flood zones: 4 features intersect this tile.
Wind
Corwin Springs: 15/100 · Helena: 15/100
No gap.
Corwin Springs: Wind exposure derived from ingested design wind / climatology tiles.
Helena: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Corwin Springs: 9/100 · Helena: 9/100
No gap.
Corwin Springs: Lightning exposure derived from ingested climatology tiles.
Helena: Lightning exposure derived from ingested climatology tiles.
Tornado
Corwin Springs: 0/100 · Helena: 4/100
Helena is 4 points higher.
Corwin Springs: Tornado risk derived from NOAA SPC historical reports.
Helena: Tornado risk derived from NOAA SPC historical reports.
Hail
Corwin Springs: 0/100 · Helena: 100/100
Helena is 100 points higher.
Corwin Springs: Hail risk derived from NOAA SPC historical reports.
Helena: Hail risk derived from NOAA SPC historical reports.
Storm surge
Corwin Springs: Unavailable · Helena: Unavailable
A score difference cannot be calculated without both sources.
Corwin Springs: Storm surge model is not available for this location yet.
Helena: Storm surge model is not available for this location yet.
Wildfire
Corwin Springs: 81/100 · Helena: 77/100
Corwin Springs is 4 points higher.
Corwin Springs: Wildfire exposure derived from ingested fire potential tiles.
Helena: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Corwin Springs: 15/100 · Helena: 13/100
Corwin Springs is 2 points higher.
Corwin Springs: 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.