City vs city
Britton vs Sioux Falls, SD
Sioux Falls currently scores 16 points higher overall than Britton, 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 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
Britton: 34/100 · Sioux Falls: 50/100
Sioux Falls is 16 points higher.
Flood
Britton: 36/100 · Sioux Falls: 52/100
Sioux Falls is 16 points higher.
Britton: FEMA NFHL flood zones: 7 features intersect this tile.
Sioux Falls: FEMA NFHL flood zones: 17 features intersect this tile.
Wind
Britton: 20/100 · Sioux Falls: 20/100
No gap.
Britton: Wind exposure derived from ingested design wind / climatology tiles.
Sioux Falls: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Britton: 26/100 · Sioux Falls: 46/100
Sioux Falls is 20 points higher.
Britton: Lightning exposure derived from ingested climatology tiles.
Sioux Falls: Lightning exposure derived from ingested climatology tiles.
Tornado
Britton: 8/100 · Sioux Falls: 58/100
Sioux Falls is 50 points higher.
Britton: Tornado risk derived from NOAA SPC historical reports.
Sioux Falls: Tornado risk derived from NOAA SPC historical reports.
Hail
Britton: 100/100 · Sioux Falls: 100/100
No gap.
Britton: Hail risk derived from NOAA SPC historical reports.
Sioux Falls: Hail risk derived from NOAA SPC historical reports.
Storm surge
Britton: Unavailable · Sioux Falls: Unavailable
A score difference cannot be calculated without both sources.
Britton: Storm surge model is not available for this location yet.
Sioux Falls: Storm surge model is not available for this location yet.
Wildfire
Britton: 39/100 · Sioux Falls: 51/100
Sioux Falls is 12 points higher.
Britton: Wildfire exposure derived from ingested fire potential tiles.
Sioux Falls: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Britton: 6/100 · Sioux Falls: 21/100
Sioux Falls is 15 points higher.
Britton: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Sioux Falls: Air quality signal derived from the latest EPA AirNow combined AQI grid.