City vs city
Spearfish vs Yankton, SD
Yankton currently scores 1 points higher overall than Spearfish, 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
Spearfish: 47/100 · Yankton: 48/100
Yankton is 1 points higher.
Flood
Spearfish: 47/100 · Yankton: 50/100
Yankton is 3 points higher.
Spearfish: FEMA NFHL flood zones: 3 features intersect this tile.
Yankton: FEMA NFHL flood zones: 13 features intersect this tile.
Wind
Spearfish: 19/100 · Yankton: 21/100
Yankton is 2 points higher.
Spearfish: Wind exposure derived from ingested design wind / climatology tiles.
Yankton: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Spearfish: 28/100 · Yankton: 32/100
Yankton is 4 points higher.
Spearfish: Lightning exposure derived from ingested climatology tiles.
Yankton: Lightning exposure derived from ingested climatology tiles.
Tornado
Spearfish: 0/100 · Yankton: 31/100
Yankton is 31 points higher.
Spearfish: Tornado risk derived from NOAA SPC historical reports.
Yankton: Tornado risk derived from NOAA SPC historical reports.
Hail
Spearfish: 100/100 · Yankton: 100/100
No gap.
Spearfish: Hail risk derived from NOAA SPC historical reports.
Yankton: Hail risk derived from NOAA SPC historical reports.
Storm surge
Spearfish: Unavailable · Yankton: Unavailable
A score difference cannot be calculated without both sources.
Spearfish: Storm surge model is not available for this location yet.
Yankton: Storm surge model is not available for this location yet.
Wildfire
Spearfish: 59/100 · Yankton: 54/100
Spearfish is 5 points higher.
Spearfish: Wildfire exposure derived from ingested fire potential tiles.
Yankton: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Spearfish: 28/100 · Yankton: Unavailable
A score difference cannot be calculated without both sources.
Spearfish: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Yankton: Air quality model is not available for this location yet.