City vs city
Sioux Falls vs Willow Lake, SD
Sioux Falls currently scores 15 points higher overall than Willow Lake, 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
Sioux Falls: 50/100 · Willow Lake: 35/100
Sioux Falls is 15 points higher.
Flood
Sioux Falls: 52/100 · Willow Lake: 44/100
Sioux Falls is 8 points higher.
Sioux Falls: FEMA NFHL flood zones: 17 features intersect this tile.
Willow Lake: FEMA NFHL flood zones: 2 features intersect this tile.
Wind
Sioux Falls: 20/100 · Willow Lake: 20/100
No gap.
Sioux Falls: Wind exposure derived from ingested design wind / climatology tiles.
Willow Lake: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Sioux Falls: 46/100 · Willow Lake: 44/100
Sioux Falls is 2 points higher.
Sioux Falls: Lightning exposure derived from ingested climatology tiles.
Willow Lake: Lightning exposure derived from ingested climatology tiles.
Tornado
Sioux Falls: 58/100 · Willow Lake: 19/100
Sioux Falls is 39 points higher.
Sioux Falls: Tornado risk derived from NOAA SPC historical reports.
Willow Lake: Tornado risk derived from NOAA SPC historical reports.
Hail
Sioux Falls: 100/100 · Willow Lake: 66/100
Sioux Falls is 34 points higher.
Sioux Falls: Hail risk derived from NOAA SPC historical reports.
Willow Lake: Hail risk derived from NOAA SPC historical reports.
Storm surge
Sioux Falls: Unavailable · Willow Lake: Unavailable
A score difference cannot be calculated without both sources.
Sioux Falls: Storm surge model is not available for this location yet.
Willow Lake: Storm surge model is not available for this location yet.
Wildfire
Sioux Falls: 51/100 · Willow Lake: 34/100
Sioux Falls is 17 points higher.
Sioux Falls: Wildfire exposure derived from ingested fire potential tiles.
Willow Lake: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Sioux Falls: 21/100 · Willow Lake: 21/100
No gap.
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.
Willow Lake: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.