City vs city
Ankeny vs Johnston, IA
Johnston currently scores 1 points higher overall than Ankeny, with the largest gap in tornado.
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 · Johnston: 51/100
Johnston is 1 points higher.
Flood
Ankeny: 57/100 · Johnston: 52/100
Ankeny is 5 points higher.
Ankeny: FEMA NFHL flood zones: 4 features intersect this tile.
Johnston: FEMA NFHL flood zones: 8 features intersect this tile.
Wind
Ankeny: 18/100 · Johnston: 18/100
No gap.
Ankeny: Wind exposure derived from ingested design wind / climatology tiles.
Johnston: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Ankeny: 58/100 · Johnston: 58/100
No gap.
Ankeny: Lightning exposure derived from ingested climatology tiles.
Johnston: Lightning exposure derived from ingested climatology tiles.
Tornado
Ankeny: 62/100 · Johnston: 73/100
Johnston is 11 points higher.
Ankeny: Tornado risk derived from NOAA SPC historical reports.
Johnston: Tornado risk derived from NOAA SPC historical reports.
Hail
Ankeny: 100/100 · Johnston: 100/100
No gap.
Ankeny: Hail risk derived from NOAA SPC historical reports.
Johnston: Hail risk derived from NOAA SPC historical reports.
Storm surge
Ankeny: Unavailable · Johnston: Unavailable
A score difference cannot be calculated without both sources.
Ankeny: Storm surge model is not available for this location yet.
Johnston: Storm surge model is not available for this location yet.
Wildfire
Ankeny: 28/100 · Johnston: 24/100
Ankeny is 4 points higher.
Ankeny: Wildfire exposure derived from ingested fire potential tiles.
Johnston: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Ankeny: 28/100 · Johnston: 30/100
Johnston 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.
Johnston: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.