City vs city
Roslyn vs Sioux Falls, SD
Sioux Falls currently scores 19 points higher overall than Roslyn, with the largest gap in hail.
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
Roslyn: 31/100 · Sioux Falls: 50/100
Sioux Falls is 19 points higher.
Flood
Roslyn: 89/100 · Sioux Falls: 52/100
Roslyn is 37 points higher.
Roslyn: FEMA NFHL flood zones: 9 features intersect this tile.
Sioux Falls: FEMA NFHL flood zones: 17 features intersect this tile.
Wind
Roslyn: 20/100 · Sioux Falls: 20/100
No gap.
Roslyn: Wind exposure derived from ingested design wind / climatology tiles.
Sioux Falls: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Roslyn: 31/100 · Sioux Falls: 46/100
Sioux Falls is 15 points higher.
Roslyn: Lightning exposure derived from ingested climatology tiles.
Sioux Falls: Lightning exposure derived from ingested climatology tiles.
Tornado
Roslyn: 4/100 · Sioux Falls: 58/100
Sioux Falls is 54 points higher.
Roslyn: Tornado risk derived from NOAA SPC historical reports.
Sioux Falls: Tornado risk derived from NOAA SPC historical reports.
Hail
Roslyn: 22/100 · Sioux Falls: 100/100
Sioux Falls is 78 points higher.
Roslyn: Hail risk derived from NOAA SPC historical reports.
Sioux Falls: Hail risk derived from NOAA SPC historical reports.
Storm surge
Roslyn: Unavailable · Sioux Falls: Unavailable
A score difference cannot be calculated without both sources.
Roslyn: Storm surge model is not available for this location yet.
Sioux Falls: Storm surge model is not available for this location yet.
Wildfire
Roslyn: 29/100 · Sioux Falls: 51/100
Sioux Falls is 22 points higher.
Roslyn: Wildfire exposure derived from ingested fire potential tiles.
Sioux Falls: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Roslyn: 21/100 · Sioux Falls: 21/100
No gap.
Roslyn: 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.