City vs city
Derby vs Waterloo, IA
Waterloo currently scores 7 points higher overall than Derby, 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
Derby: 34/100 · Waterloo: 41/100
Waterloo is 7 points higher.
Flood
Derby: 55/100 · Waterloo: 66/100
Waterloo is 11 points higher.
Derby: FEMA NFHL flood zones: 6 features intersect this tile.
Waterloo: FEMA NFHL flood zones: 17 features intersect this tile.
Wind
Derby: 18/100 · Waterloo: 18/100
No gap.
Derby: Wind exposure derived from ingested design wind / climatology tiles.
Waterloo: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Derby: 64/100 · Waterloo: 30/100
Derby is 34 points higher.
Derby: Lightning exposure derived from ingested climatology tiles.
Waterloo: Lightning exposure derived from ingested climatology tiles.
Tornado
Derby: 4/100 · Waterloo: 15/100
Waterloo is 11 points higher.
Derby: Tornado risk derived from NOAA SPC historical reports.
Waterloo: Tornado risk derived from NOAA SPC historical reports.
Hail
Derby: 29/100 · Waterloo: 100/100
Waterloo is 71 points higher.
Derby: Hail risk derived from NOAA SPC historical reports.
Waterloo: Hail risk derived from NOAA SPC historical reports.
Storm surge
Derby: Unavailable · Waterloo: Unavailable
A score difference cannot be calculated without both sources.
Derby: Storm surge model is not available for this location yet.
Waterloo: Storm surge model is not available for this location yet.
Wildfire
Derby: 34/100 · Waterloo: 34/100
No gap.
Derby: Wildfire exposure derived from ingested fire potential tiles.
Waterloo: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Derby: 31/100 · Waterloo: 21/100
Derby is 10 points higher.
Derby: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Waterloo: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.