City vs city
Grenville vs Waubay, SD
Waubay currently scores 5 points higher overall than Grenville, 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 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
Grenville: 33/100 · Waubay: 38/100
Waubay is 5 points higher.
Flood
Grenville: 100/100 · Waubay: 100/100
No gap.
Grenville: FEMA NFHL flood zones: 13 features intersect this tile.
Waubay: FEMA NFHL flood zones: 10 features intersect this tile.
Wind
Grenville: 20/100 · Waubay: 20/100
No gap.
Grenville: Wind exposure derived from ingested design wind / climatology tiles.
Waubay: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Grenville: 32/100 · Waubay: 34/100
Waubay is 2 points higher.
Grenville: Lightning exposure derived from ingested climatology tiles.
Waubay: Lightning exposure derived from ingested climatology tiles.
Tornado
Grenville: 12/100 · Waubay: 0/100
Grenville is 12 points higher.
Grenville: Tornado risk derived from NOAA SPC historical reports.
Waubay: Tornado risk derived from NOAA SPC historical reports.
Hail
Grenville: 34/100 · Waubay: 41/100
Waubay is 7 points higher.
Grenville: Hail risk derived from NOAA SPC historical reports.
Waubay: Hail risk derived from NOAA SPC historical reports.
Storm surge
Grenville: Unavailable · Waubay: Unavailable
A score difference cannot be calculated without both sources.
Grenville: Storm surge model is not available for this location yet.
Waubay: Storm surge model is not available for this location yet.
Wildfire
Grenville: 10/100 · Waubay: 9/100
Grenville is 1 points higher.
Grenville: Wildfire exposure derived from ingested fire potential tiles.
Waubay: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Grenville: 21/100 · Waubay: 21/100
No gap.
Grenville: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Waubay: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.