City vs city
Groton vs Yankton, SD
Yankton currently scores 8 points higher overall than Groton, with the largest gap in flood.
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
Groton: 40/100 · Yankton: 48/100
Yankton is 8 points higher.
Flood
Groton: 72/100 · Yankton: 50/100
Groton is 22 points higher.
Groton: FEMA NFHL flood zones: 7 features intersect this tile.
Yankton: FEMA NFHL flood zones: 13 features intersect this tile.
Wind
Groton: 20/100 · Yankton: 21/100
Yankton is 1 points higher.
Groton: Wind exposure derived from ingested design wind / climatology tiles.
Yankton: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Groton: 30/100 · Yankton: 32/100
Yankton is 2 points higher.
Groton: Lightning exposure derived from ingested climatology tiles.
Yankton: Lightning exposure derived from ingested climatology tiles.
Tornado
Groton: 31/100 · Yankton: 31/100
No gap.
Groton: Tornado risk derived from NOAA SPC historical reports.
Yankton: Tornado risk derived from NOAA SPC historical reports.
Hail
Groton: 85/100 · Yankton: 100/100
Yankton is 15 points higher.
Groton: Hail risk derived from NOAA SPC historical reports.
Yankton: Hail risk derived from NOAA SPC historical reports.
Storm surge
Groton: Unavailable · Yankton: Unavailable
A score difference cannot be calculated without both sources.
Groton: Storm surge model is not available for this location yet.
Yankton: Storm surge model is not available for this location yet.
Wildfire
Groton: 37/100 · Yankton: 54/100
Yankton is 17 points higher.
Groton: Wildfire exposure derived from ingested fire potential tiles.
Yankton: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Groton: 5/100 · Yankton: Unavailable
A score difference cannot be calculated without both sources.
Groton: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Yankton: Air quality model is not available for this location yet.