City vs city
Sioux City vs Washington, IA
Washington currently scores 5 points higher overall than Sioux City, 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 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 · Washington: 44/100
Washington is 5 points higher.
Flood
Sioux City: 4/100 · Washington: 71/100
Washington is 67 points higher.
Sioux City: FEMA NFHL flood zones: 2 features intersect this tile.
Washington: FEMA NFHL flood zones: 4 features intersect this tile.
Wind
Sioux City: 20/100 · Washington: 17/100
Sioux City is 3 points higher.
Sioux City: Wind exposure derived from ingested design wind / climatology tiles.
Washington: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Sioux City: 52/100 · Washington: 40/100
Sioux City is 12 points higher.
Sioux City: Lightning exposure derived from ingested climatology tiles.
Washington: Lightning exposure derived from ingested climatology tiles.
Tornado
Sioux City: 38/100 · Washington: 42/100
Washington is 4 points higher.
Sioux City: Tornado risk derived from NOAA SPC historical reports.
Washington: Tornado risk derived from NOAA SPC historical reports.
Hail
Sioux City: 86/100 · Washington: 90/100
Washington is 4 points higher.
Sioux City: Hail risk derived from NOAA SPC historical reports.
Washington: Hail risk derived from NOAA SPC historical reports.
Storm surge
Sioux City: Unavailable · Washington: Unavailable
A score difference cannot be calculated without both sources.
Sioux City: Storm surge model is not available for this location yet.
Washington: Storm surge model is not available for this location yet.
Wildfire
Sioux City: 48/100 · Washington: 23/100
Sioux City is 25 points higher.
Sioux City: Wildfire exposure derived from ingested fire potential tiles.
Washington: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Sioux City: 26/100 · Washington: 24/100
Sioux City is 2 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.
Washington: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.