City vs city
Alta vs Des Moines, IA
Des Moines currently scores 14 points higher overall than Alta, 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 is a current EPA AirNow signal; 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
Alta: 32/100 · Des Moines: 46/100
Des Moines is 14 points higher.
Flood
Alta: 43/100 · Des Moines: 73/100
Des Moines is 30 points higher.
Alta: FEMA NFHL flood zones: 4 features intersect this tile.
Des Moines: FEMA NFHL flood zones: 10 features intersect this tile.
Wind
Alta: 19/100 · Des Moines: 18/100
Alta is 1 points higher.
Alta: Wind exposure derived from ingested design wind / climatology tiles.
Des Moines: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Alta: 56/100 · Des Moines: 58/100
Des Moines is 2 points higher.
Alta: Lightning exposure derived from ingested climatology tiles.
Des Moines: Lightning exposure derived from ingested climatology tiles.
Tornado
Alta: 23/100 · Des Moines: 12/100
Alta is 11 points higher.
Alta: Tornado risk derived from NOAA SPC historical reports.
Des Moines: Tornado risk derived from NOAA SPC historical reports.
Hail
Alta: 26/100 · Des Moines: 100/100
Des Moines is 74 points higher.
Alta: Hail risk derived from NOAA SPC historical reports.
Des Moines: Hail risk derived from NOAA SPC historical reports.
Storm surge
Alta: Unavailable · Des Moines: Unavailable
A score difference cannot be calculated without both sources.
Alta: Storm surge model is not available for this location yet.
Des Moines: Storm surge model is not available for this location yet.
Wildfire
Alta: 36/100 · Des Moines: 31/100
Alta is 5 points higher.
Alta: Wildfire exposure derived from ingested fire potential tiles.
Des Moines: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Alta: 20/100 · Des Moines: 32/100
Des Moines is 12 points higher.
Alta: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Des Moines: Air quality signal derived from the latest EPA AirNow combined AQI grid.