City vs city
Alta vs Ida Grove, IA
Ida Grove currently scores 10 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 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
Alta: 32/100 · Ida Grove: 42/100
Ida Grove is 10 points higher.
Flood
Alta: 43/100 · Ida Grove: 49/100
Ida Grove is 6 points higher.
Alta: FEMA NFHL flood zones: 4 features intersect this tile.
Ida Grove: FEMA NFHL flood zones: 6 features intersect this tile.
Wind
Alta: 19/100 · Ida Grove: 19/100
No gap.
Alta: Wind exposure derived from ingested design wind / climatology tiles.
Ida Grove: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Alta: 56/100 · Ida Grove: 59/100
Ida Grove is 3 points higher.
Alta: Lightning exposure derived from ingested climatology tiles.
Ida Grove: Lightning exposure derived from ingested climatology tiles.
Tornado
Alta: 23/100 · Ida Grove: 19/100
Alta is 4 points higher.
Alta: Tornado risk derived from NOAA SPC historical reports.
Ida Grove: Tornado risk derived from NOAA SPC historical reports.
Hail
Alta: 26/100 · Ida Grove: 97/100
Ida Grove is 71 points higher.
Alta: Hail risk derived from NOAA SPC historical reports.
Ida Grove: Hail risk derived from NOAA SPC historical reports.
Storm surge
Alta: Unavailable · Ida Grove: Unavailable
A score difference cannot be calculated without both sources.
Alta: Storm surge model is not available for this location yet.
Ida Grove: Storm surge model is not available for this location yet.
Wildfire
Alta: 36/100 · Ida Grove: 30/100
Alta is 6 points higher.
Alta: Wildfire exposure derived from ingested fire potential tiles.
Ida Grove: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Alta: 20/100 · Ida Grove: 21/100
Ida Grove is 1 points higher.
Alta: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Ida Grove: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.