City vs city
Decorah vs West Union, IA
West Union currently scores 1 points higher overall than Decorah, 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
Decorah: 24/100 · West Union: 25/100
West Union is 1 points higher.
Flood
Decorah: 45/100 · West Union: 43/100
Decorah is 2 points higher.
Decorah: FEMA NFHL flood zones: 5 features intersect this tile.
West Union: FEMA NFHL flood zones: 2 features intersect this tile.
Wind
Decorah: 17/100 · West Union: 17/100
No gap.
Decorah: Wind exposure derived from ingested design wind / climatology tiles.
West Union: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Decorah: 15/100 · West Union: 18/100
West Union is 3 points higher.
Decorah: Lightning exposure derived from ingested climatology tiles.
West Union: Lightning exposure derived from ingested climatology tiles.
Tornado
Decorah: 4/100 · West Union: 15/100
West Union is 11 points higher.
Decorah: Tornado risk derived from NOAA SPC historical reports.
West Union: Tornado risk derived from NOAA SPC historical reports.
Hail
Decorah: 36/100 · West Union: 26/100
Decorah is 10 points higher.
Decorah: Hail risk derived from NOAA SPC historical reports.
West Union: Hail risk derived from NOAA SPC historical reports.
Storm surge
Decorah: Unavailable · West Union: Unavailable
A score difference cannot be calculated without both sources.
Decorah: Storm surge model is not available for this location yet.
West Union: Storm surge model is not available for this location yet.
Wildfire
Decorah: 36/100 · West Union: 38/100
West Union is 2 points higher.
Decorah: Wildfire exposure derived from ingested fire potential tiles.
West Union: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Decorah: 16/100 · West Union: 21/100
West Union is 5 points higher.
Decorah: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
West Union: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.