City vs city
North Spearfish vs Yankton, SD
Yankton currently scores 11 points higher overall than North Spearfish, 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
North Spearfish: 37/100 · Yankton: 48/100
Yankton is 11 points higher.
Flood
North Spearfish: 59/100 · Yankton: 50/100
North Spearfish is 9 points higher.
North Spearfish: FEMA NFHL flood zones: 5 features intersect this tile.
Yankton: FEMA NFHL flood zones: 13 features intersect this tile.
Wind
North Spearfish: 19/100 · Yankton: 21/100
Yankton is 2 points higher.
North Spearfish: Wind exposure derived from ingested design wind / climatology tiles.
Yankton: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
North Spearfish: 30/100 · Yankton: 32/100
Yankton is 2 points higher.
North Spearfish: Lightning exposure derived from ingested climatology tiles.
Yankton: Lightning exposure derived from ingested climatology tiles.
Tornado
North Spearfish: 8/100 · Yankton: 31/100
Yankton is 23 points higher.
North Spearfish: Tornado risk derived from NOAA SPC historical reports.
Yankton: Tornado risk derived from NOAA SPC historical reports.
Hail
North Spearfish: 64/100 · Yankton: 100/100
Yankton is 36 points higher.
North Spearfish: Hail risk derived from NOAA SPC historical reports.
Yankton: Hail risk derived from NOAA SPC historical reports.
Storm surge
North Spearfish: Unavailable · Yankton: Unavailable
A score difference cannot be calculated without both sources.
North Spearfish: Storm surge model is not available for this location yet.
Yankton: Storm surge model is not available for this location yet.
Wildfire
North Spearfish: 51/100 · Yankton: 54/100
Yankton is 3 points higher.
North Spearfish: Wildfire exposure derived from ingested fire potential tiles.
Yankton: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
North Spearfish: 28/100 · Yankton: Unavailable
A score difference cannot be calculated without both sources.
North Spearfish: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Yankton: Air quality model is not available for this location yet.