City vs city
Big Stone City vs Sioux Falls, SD
Sioux Falls currently scores 16 points higher overall than Big Stone City, with the largest gap in tornado.
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
Big Stone City: 34/100 · Sioux Falls: 50/100
Sioux Falls is 16 points higher.
Flood
Big Stone City: 36/100 · Sioux Falls: 52/100
Sioux Falls is 16 points higher.
Big Stone City: FEMA NFHL flood zones: 8 features intersect this tile.
Sioux Falls: FEMA NFHL flood zones: 17 features intersect this tile.
Wind
Big Stone City: 19/100 · Sioux Falls: 20/100
Sioux Falls is 1 points higher.
Big Stone City: Wind exposure derived from ingested design wind / climatology tiles.
Sioux Falls: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Big Stone City: 41/100 · Sioux Falls: 46/100
Sioux Falls is 5 points higher.
Big Stone City: Lightning exposure derived from ingested climatology tiles.
Sioux Falls: Lightning exposure derived from ingested climatology tiles.
Tornado
Big Stone City: 0/100 · Sioux Falls: 58/100
Sioux Falls is 58 points higher.
Big Stone City: Tornado risk derived from NOAA SPC historical reports.
Sioux Falls: Tornado risk derived from NOAA SPC historical reports.
Hail
Big Stone City: 47/100 · Sioux Falls: 100/100
Sioux Falls is 53 points higher.
Big Stone City: Hail risk derived from NOAA SPC historical reports.
Sioux Falls: Hail risk derived from NOAA SPC historical reports.
Storm surge
Big Stone City: Unavailable · Sioux Falls: Unavailable
A score difference cannot be calculated without both sources.
Big Stone City: Storm surge model is not available for this location yet.
Sioux Falls: Storm surge model is not available for this location yet.
Wildfire
Big Stone City: 36/100 · Sioux Falls: 51/100
Sioux Falls is 15 points higher.
Big Stone City: Wildfire exposure derived from ingested fire potential tiles.
Sioux Falls: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Big Stone City: 22/100 · Sioux Falls: 21/100
Big Stone City is 1 points higher.
Big Stone 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.
Sioux Falls: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.