City vs city
Altoona vs Nelson, WI
Altoona currently scores 9 points higher overall than Nelson, 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
Altoona: 44/100 · Nelson: 35/100
Altoona is 9 points higher.
Flood
Altoona: 47/100 · Nelson: 100/100
Nelson is 53 points higher.
Altoona: FEMA NFHL flood zones: 11 features intersect this tile.
Nelson: FEMA NFHL flood zones: 7 features intersect this tile.
Wind
Altoona: 16/100 · Nelson: 17/100
Nelson is 1 points higher.
Altoona: Wind exposure derived from ingested design wind / climatology tiles.
Nelson: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Altoona: 17/100 · Nelson: 25/100
Nelson is 8 points higher.
Altoona: Lightning exposure derived from ingested climatology tiles.
Nelson: Lightning exposure derived from ingested climatology tiles.
Tornado
Altoona: 62/100 · Nelson: 0/100
Altoona is 62 points higher.
Altoona: Tornado risk derived from NOAA SPC historical reports.
Nelson: Tornado risk derived from NOAA SPC historical reports.
Hail
Altoona: 100/100 · Nelson: 22/100
Altoona is 78 points higher.
Altoona: Hail risk derived from NOAA SPC historical reports.
Nelson: Hail risk derived from NOAA SPC historical reports.
Storm surge
Altoona: Unavailable · Nelson: Unavailable
A score difference cannot be calculated without both sources.
Altoona: Storm surge model is not available for this location yet.
Nelson: Storm surge model is not available for this location yet.
Wildfire
Altoona: 49/100 · Nelson: 30/100
Altoona is 19 points higher.
Altoona: Wildfire exposure derived from ingested fire potential tiles.
Nelson: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Altoona: 16/100 · Nelson: 14/100
Altoona is 2 points higher.
Altoona: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Nelson: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.