City vs city
Harper vs Kalona, IA
Harper currently scores 2 points higher overall than Kalona, 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 is a current EPA AirNow signal; 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
Harper: 33/100 · Kalona: 31/100
Harper is 2 points higher.
Flood
Harper: 52/100 · Kalona: 73/100
Kalona is 21 points higher.
Harper: FEMA NFHL flood zones: 3 features intersect this tile.
Kalona: FEMA NFHL flood zones: 3 features intersect this tile.
Wind
Harper: 17/100 · Kalona: 17/100
No gap.
Harper: Wind exposure derived from ingested design wind / climatology tiles.
Kalona: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Harper: 45/100 · Kalona: 44/100
Harper is 1 points higher.
Harper: Lightning exposure derived from ingested climatology tiles.
Kalona: Lightning exposure derived from ingested climatology tiles.
Tornado
Harper: 46/100 · Kalona: 4/100
Harper is 42 points higher.
Harper: Tornado risk derived from NOAA SPC historical reports.
Kalona: Tornado risk derived from NOAA SPC historical reports.
Hail
Harper: 4/100 · Kalona: 15/100
Kalona is 11 points higher.
Harper: Hail risk derived from NOAA SPC historical reports.
Kalona: Hail risk derived from NOAA SPC historical reports.
Storm surge
Harper: Unavailable · Kalona: Unavailable
A score difference cannot be calculated without both sources.
Harper: Storm surge model is not available for this location yet.
Kalona: Storm surge model is not available for this location yet.
Wildfire
Harper: 40/100 · Kalona: 39/100
Harper is 1 points higher.
Harper: Wildfire exposure derived from ingested fire potential tiles.
Kalona: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Harper: 24/100 · Kalona: 24/100
No gap.
Harper: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Kalona: Air quality signal derived from the latest EPA AirNow combined AQI grid.