City vs city
Knoxville vs Sioux City, IA
Sioux City currently scores 1 points higher overall than Knoxville, with the largest gap 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 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
Knoxville: 38/100 · Sioux City: 39/100
Sioux City is 1 points higher.
Flood
Knoxville: 77/100 · Sioux City: 4/100
Knoxville is 73 points higher.
Knoxville: FEMA NFHL flood zones: 4 features intersect this tile.
Sioux City: FEMA NFHL flood zones: 2 features intersect this tile.
Wind
Knoxville: 18/100 · Sioux City: 20/100
Sioux City is 2 points higher.
Knoxville: Wind exposure derived from ingested design wind / climatology tiles.
Sioux City: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Knoxville: 60/100 · Sioux City: 52/100
Knoxville is 8 points higher.
Knoxville: Lightning exposure derived from ingested climatology tiles.
Sioux City: Lightning exposure derived from ingested climatology tiles.
Tornado
Knoxville: 8/100 · Sioux City: 38/100
Sioux City is 30 points higher.
Knoxville: Tornado risk derived from NOAA SPC historical reports.
Sioux City: Tornado risk derived from NOAA SPC historical reports.
Hail
Knoxville: 45/100 · Sioux City: 86/100
Sioux City is 41 points higher.
Knoxville: Hail risk derived from NOAA SPC historical reports.
Sioux City: Hail risk derived from NOAA SPC historical reports.
Storm surge
Knoxville: Unavailable · Sioux City: Unavailable
A score difference cannot be calculated without both sources.
Knoxville: Storm surge model is not available for this location yet.
Sioux City: Storm surge model is not available for this location yet.
Wildfire
Knoxville: 26/100 · Sioux City: 48/100
Sioux City is 22 points higher.
Knoxville: Wildfire exposure derived from ingested fire potential tiles.
Sioux City: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Knoxville: 31/100 · Sioux City: 26/100
Knoxville is 5 points higher.
Knoxville: 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.