City vs city
North Sioux City vs Richland, SD
North Sioux City currently scores 2 points higher overall than Richland, 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
North Sioux City: 43/100 · Richland: 41/100
North Sioux City is 2 points higher.
Flood
North Sioux City: 10/100 · Richland: 98/100
Richland is 88 points higher.
North Sioux City: FEMA NFHL flood zones: 3 features intersect this tile.
Richland: FEMA NFHL flood zones: 12 features intersect this tile.
Wind
North Sioux City: 20/100 · Richland: 20/100
No gap.
North Sioux City: Wind exposure derived from ingested design wind / climatology tiles.
Richland: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
North Sioux City: 48/100 · Richland: 41/100
North Sioux City is 7 points higher.
North Sioux City: Lightning exposure derived from ingested climatology tiles.
Richland: Lightning exposure derived from ingested climatology tiles.
Tornado
North Sioux City: 54/100 · Richland: 35/100
North Sioux City is 19 points higher.
North Sioux City: Tornado risk derived from NOAA SPC historical reports.
Richland: Tornado risk derived from NOAA SPC historical reports.
Hail
North Sioux City: 90/100 · Richland: 35/100
North Sioux City is 55 points higher.
North Sioux City: Hail risk derived from NOAA SPC historical reports.
Richland: Hail risk derived from NOAA SPC historical reports.
Storm surge
North Sioux City: Unavailable · Richland: Unavailable
A score difference cannot be calculated without both sources.
North Sioux City: Storm surge model is not available for this location yet.
Richland: Storm surge model is not available for this location yet.
Wildfire
North Sioux City: 52/100 · Richland: 37/100
North Sioux City is 15 points higher.
North Sioux City: Wildfire exposure derived from ingested fire potential tiles.
Richland: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
North Sioux City: 26/100 · Richland: 22/100
North Sioux City is 4 points higher.
North Sioux City: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Richland: Air quality signal derived from the latest EPA AirNow combined AQI grid.