City vs city
Jefferson vs Sioux Falls, SD
Sioux Falls currently scores 3 points higher overall than Jefferson, 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
Jefferson: 47/100 · Sioux Falls: 50/100
Sioux Falls is 3 points higher.
Flood
Jefferson: 81/100 · Sioux Falls: 52/100
Jefferson is 29 points higher.
Jefferson: FEMA NFHL flood zones: 11 features intersect this tile.
Sioux Falls: FEMA NFHL flood zones: 17 features intersect this tile.
Wind
Jefferson: 20/100 · Sioux Falls: 20/100
No gap.
Jefferson: Wind exposure derived from ingested design wind / climatology tiles.
Sioux Falls: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Jefferson: 44/100 · Sioux Falls: 46/100
Sioux Falls is 2 points higher.
Jefferson: Lightning exposure derived from ingested climatology tiles.
Sioux Falls: Lightning exposure derived from ingested climatology tiles.
Tornado
Jefferson: 0/100 · Sioux Falls: 58/100
Sioux Falls is 58 points higher.
Jefferson: Tornado risk derived from NOAA SPC historical reports.
Sioux Falls: Tornado risk derived from NOAA SPC historical reports.
Hail
Jefferson: 66/100 · Sioux Falls: 100/100
Sioux Falls is 34 points higher.
Jefferson: Hail risk derived from NOAA SPC historical reports.
Sioux Falls: Hail risk derived from NOAA SPC historical reports.
Storm surge
Jefferson: Unavailable · Sioux Falls: Unavailable
A score difference cannot be calculated without both sources.
Jefferson: Storm surge model is not available for this location yet.
Sioux Falls: Storm surge model is not available for this location yet.
Wildfire
Jefferson: 47/100 · Sioux Falls: 51/100
Sioux Falls is 4 points higher.
Jefferson: Wildfire exposure derived from ingested fire potential tiles.
Sioux Falls: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Jefferson: 25/100 · Sioux Falls: 21/100
Jefferson is 4 points higher.
Jefferson: 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.