City vs city
Henry vs Yankton, SD
Henry and Yankton are tied on overall score, with the biggest factor difference 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
Henry: 48/100 · Yankton: 48/100
No gap.
Flood
Henry: 67/100 · Yankton: 50/100
Henry is 17 points higher.
Henry: FEMA NFHL flood zones: 10 features intersect this tile.
Yankton: FEMA NFHL flood zones: 13 features intersect this tile.
Wind
Henry: 20/100 · Yankton: 21/100
Yankton is 1 points higher.
Henry: Wind exposure derived from ingested design wind / climatology tiles.
Yankton: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Henry: 40/100 · Yankton: 32/100
Henry is 8 points higher.
Henry: Lightning exposure derived from ingested climatology tiles.
Yankton: Lightning exposure derived from ingested climatology tiles.
Tornado
Henry: 0/100 · Yankton: 31/100
Yankton is 31 points higher.
Henry: Tornado risk derived from NOAA SPC historical reports.
Yankton: Tornado risk derived from NOAA SPC historical reports.
Hail
Henry: 100/100 · Yankton: 100/100
No gap.
Henry: Hail risk derived from NOAA SPC historical reports.
Yankton: Hail risk derived from NOAA SPC historical reports.
Storm surge
Henry: Unavailable · Yankton: Unavailable
A score difference cannot be calculated without both sources.
Henry: Storm surge model is not available for this location yet.
Yankton: Storm surge model is not available for this location yet.
Wildfire
Henry: 37/100 · Yankton: 54/100
Yankton is 17 points higher.
Henry: Wildfire exposure derived from ingested fire potential tiles.
Yankton: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Henry: 21/100 · Yankton: Unavailable
A score difference cannot be calculated without both sources.
Henry: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Yankton: Air quality model is not available for this location yet.