City vs city
Sioux City vs Sumner, IA
Sioux City and Sumner are tied on overall score, with the biggest factor difference in flood.
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
Sioux City: 39/100 · Sumner: 39/100
No gap.
Flood
Sioux City: 4/100 · Sumner: 52/100
Sumner is 48 points higher.
Sioux City: FEMA NFHL flood zones: 2 features intersect this tile.
Sumner: FEMA NFHL flood zones: 10 features intersect this tile.
Wind
Sioux City: 20/100 · Sumner: 17/100
Sioux City is 3 points higher.
Sioux City: Wind exposure derived from ingested design wind / climatology tiles.
Sumner: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Sioux City: 52/100 · Sumner: 22/100
Sioux City is 30 points higher.
Sioux City: Lightning exposure derived from ingested climatology tiles.
Sumner: Lightning exposure derived from ingested climatology tiles.
Tornado
Sioux City: 38/100 · Sumner: 73/100
Sumner is 35 points higher.
Sioux City: Tornado risk derived from NOAA SPC historical reports.
Sumner: Tornado risk derived from NOAA SPC historical reports.
Hail
Sioux City: 86/100 · Sumner: 53/100
Sioux City is 33 points higher.
Sioux City: Hail risk derived from NOAA SPC historical reports.
Sumner: Hail risk derived from NOAA SPC historical reports.
Storm surge
Sioux City: Unavailable · Sumner: Unavailable
A score difference cannot be calculated without both sources.
Sioux City: Storm surge model is not available for this location yet.
Sumner: Storm surge model is not available for this location yet.
Wildfire
Sioux City: 48/100 · Sumner: 33/100
Sioux City is 15 points higher.
Sioux City: Wildfire exposure derived from ingested fire potential tiles.
Sumner: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Sioux City: 26/100 · Sumner: 21/100
Sioux City is 5 points higher.
Sioux City: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Sumner: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.