City vs city
Ankeny vs Sioux City, IA
Ankeny currently scores 11 points higher overall than Sioux City, with the largest gap in flood.
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
Ankeny: 50/100 · Sioux City: 39/100
Ankeny is 11 points higher.
Flood
Ankeny: 57/100 · Sioux City: 4/100
Ankeny is 53 points higher.
Ankeny: FEMA NFHL flood zones: 4 features intersect this tile.
Sioux City: FEMA NFHL flood zones: 2 features intersect this tile.
Wind
Ankeny: 18/100 · Sioux City: 20/100
Sioux City is 2 points higher.
Ankeny: Wind exposure derived from ingested design wind / climatology tiles.
Sioux City: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Ankeny: 58/100 · Sioux City: 52/100
Ankeny is 6 points higher.
Ankeny: Lightning exposure derived from ingested climatology tiles.
Sioux City: Lightning exposure derived from ingested climatology tiles.
Tornado
Ankeny: 62/100 · Sioux City: 38/100
Ankeny is 24 points higher.
Ankeny: Tornado risk derived from NOAA SPC historical reports.
Sioux City: Tornado risk derived from NOAA SPC historical reports.
Hail
Ankeny: 100/100 · Sioux City: 86/100
Ankeny is 14 points higher.
Ankeny: Hail risk derived from NOAA SPC historical reports.
Sioux City: Hail risk derived from NOAA SPC historical reports.
Storm surge
Ankeny: Unavailable · Sioux City: Unavailable
A score difference cannot be calculated without both sources.
Ankeny: Storm surge model is not available for this location yet.
Sioux City: Storm surge model is not available for this location yet.
Wildfire
Ankeny: 28/100 · Sioux City: 48/100
Sioux City is 20 points higher.
Ankeny: Wildfire exposure derived from ingested fire potential tiles.
Sioux City: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Ankeny: 28/100 · Sioux City: 26/100
Ankeny is 2 points higher.
Ankeny: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Sioux City: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.