City vs city
Harper vs Sioux City, IA
Sioux City currently scores 6 points higher overall than Harper, 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 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 · Sioux City: 39/100
Sioux City is 6 points higher.
Flood
Harper: 52/100 · Sioux City: 4/100
Harper is 48 points higher.
Harper: FEMA NFHL flood zones: 3 features intersect this tile.
Sioux City: FEMA NFHL flood zones: 2 features intersect this tile.
Wind
Harper: 17/100 · Sioux City: 20/100
Sioux City is 3 points higher.
Harper: Wind exposure derived from ingested design wind / climatology tiles.
Sioux City: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Harper: 45/100 · Sioux City: 52/100
Sioux City is 7 points higher.
Harper: Lightning exposure derived from ingested climatology tiles.
Sioux City: Lightning exposure derived from ingested climatology tiles.
Tornado
Harper: 46/100 · Sioux City: 38/100
Harper is 8 points higher.
Harper: Tornado risk derived from NOAA SPC historical reports.
Sioux City: Tornado risk derived from NOAA SPC historical reports.
Hail
Harper: 4/100 · Sioux City: 86/100
Sioux City is 82 points higher.
Harper: Hail risk derived from NOAA SPC historical reports.
Sioux City: Hail risk derived from NOAA SPC historical reports.
Storm surge
Harper: Unavailable · Sioux City: Unavailable
A score difference cannot be calculated without both sources.
Harper: Storm surge model is not available for this location yet.
Sioux City: Storm surge model is not available for this location yet.
Wildfire
Harper: 40/100 · Sioux City: 48/100
Sioux City is 8 points higher.
Harper: Wildfire exposure derived from ingested fire potential tiles.
Sioux City: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Harper: 24/100 · Sioux City: 26/100
Sioux City is 2 points higher.
Harper: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Sioux City: Air quality signal derived from the latest EPA AirNow combined AQI grid.