City vs city
Ankeny vs Sergeant Bluff, IA
Ankeny currently scores 9 points higher overall than Sergeant Bluff, 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 · Sergeant Bluff: 41/100
Ankeny is 9 points higher.
Flood
Ankeny: 57/100 · Sergeant Bluff: 8/100
Ankeny is 49 points higher.
Ankeny: FEMA NFHL flood zones: 4 features intersect this tile.
Sergeant Bluff: FEMA NFHL flood zones: 3 features intersect this tile.
Wind
Ankeny: 18/100 · Sergeant Bluff: 20/100
Sergeant Bluff is 2 points higher.
Ankeny: Wind exposure derived from ingested design wind / climatology tiles.
Sergeant Bluff: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Ankeny: 58/100 · Sergeant Bluff: 54/100
Ankeny is 4 points higher.
Ankeny: Lightning exposure derived from ingested climatology tiles.
Sergeant Bluff: Lightning exposure derived from ingested climatology tiles.
Tornado
Ankeny: 62/100 · Sergeant Bluff: 27/100
Ankeny is 35 points higher.
Ankeny: Tornado risk derived from NOAA SPC historical reports.
Sergeant Bluff: Tornado risk derived from NOAA SPC historical reports.
Hail
Ankeny: 100/100 · Sergeant Bluff: 100/100
No gap.
Ankeny: Hail risk derived from NOAA SPC historical reports.
Sergeant Bluff: Hail risk derived from NOAA SPC historical reports.
Storm surge
Ankeny: Unavailable · Sergeant Bluff: Unavailable
A score difference cannot be calculated without both sources.
Ankeny: Storm surge model is not available for this location yet.
Sergeant Bluff: Storm surge model is not available for this location yet.
Wildfire
Ankeny: 28/100 · Sergeant Bluff: 54/100
Sergeant Bluff is 26 points higher.
Ankeny: Wildfire exposure derived from ingested fire potential tiles.
Sergeant Bluff: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Ankeny: 28/100 · Sergeant Bluff: 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.
Sergeant Bluff: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.