City vs city
North Sioux City vs Yankton, SD
Yankton currently scores 5 points higher overall than North 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
North Sioux City: 43/100 · Yankton: 48/100
Yankton is 5 points higher.
Flood
North Sioux City: 10/100 · Yankton: 50/100
Yankton is 40 points higher.
North Sioux City: FEMA NFHL flood zones: 3 features intersect this tile.
Yankton: FEMA NFHL flood zones: 13 features intersect this tile.
Wind
North Sioux City: 20/100 · Yankton: 21/100
Yankton is 1 points higher.
North Sioux City: Wind exposure derived from ingested design wind / climatology tiles.
Yankton: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
North Sioux City: 48/100 · Yankton: 32/100
North Sioux City is 16 points higher.
North Sioux City: Lightning exposure derived from ingested climatology tiles.
Yankton: Lightning exposure derived from ingested climatology tiles.
Tornado
North Sioux City: 54/100 · Yankton: 31/100
North Sioux City is 23 points higher.
North Sioux City: Tornado risk derived from NOAA SPC historical reports.
Yankton: Tornado risk derived from NOAA SPC historical reports.
Hail
North Sioux City: 90/100 · Yankton: 100/100
Yankton is 10 points higher.
North Sioux City: Hail risk derived from NOAA SPC historical reports.
Yankton: Hail risk derived from NOAA SPC historical reports.
Storm surge
North Sioux City: Unavailable · Yankton: Unavailable
A score difference cannot be calculated without both sources.
North Sioux City: Storm surge model is not available for this location yet.
Yankton: Storm surge model is not available for this location yet.
Wildfire
North Sioux City: 52/100 · Yankton: 54/100
Yankton is 2 points higher.
North Sioux City: Wildfire exposure derived from ingested fire potential tiles.
Yankton: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
North Sioux City: 26/100 · Yankton: Unavailable
A score difference cannot be calculated without both sources.
North 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.
Yankton: Air quality model is not available for this location yet.