City vs city
Alpena vs Au Sable, MI
Au Sable currently scores 6 points higher overall than Alpena, 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 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
Alpena: 29/100 · Au Sable: 35/100
Au Sable is 6 points higher.
Flood
Alpena: 68/100 · Au Sable: 79/100
Au Sable is 11 points higher.
Alpena: FEMA NFHL flood zones: 12 features intersect this tile.
Au Sable: FEMA NFHL flood zones: 12 features intersect this tile.
Wind
Alpena: 14/100 · Au Sable: 14/100
No gap.
Alpena: Wind exposure derived from ingested design wind / climatology tiles.
Au Sable: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Alpena: 18/100 · Au Sable: 20/100
Au Sable is 2 points higher.
Alpena: Lightning exposure derived from ingested climatology tiles.
Au Sable: Lightning exposure derived from ingested climatology tiles.
Tornado
Alpena: 15/100 · Au Sable: 0/100
Alpena is 15 points higher.
Alpena: Tornado risk derived from NOAA SPC historical reports.
Au Sable: Tornado risk derived from NOAA SPC historical reports.
Hail
Alpena: 33/100 · Au Sable: 25/100
Alpena is 8 points higher.
Alpena: Hail risk derived from NOAA SPC historical reports.
Au Sable: Hail risk derived from NOAA SPC historical reports.
Storm surge
Alpena: Unavailable · Au Sable: Unavailable
A score difference cannot be calculated without both sources.
Alpena: Storm surge model is not available for this location yet.
Au Sable: Storm surge model is not available for this location yet.
Wildfire
Alpena: 41/100 · Au Sable: 46/100
Au Sable is 5 points higher.
Alpena: Wildfire exposure derived from ingested fire potential tiles.
Au Sable: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Alpena: 17/100 · Au Sable: 27/100
Au Sable is 10 points higher.
Alpena: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Au Sable: Air quality signal derived from the latest EPA AirNow combined AQI grid.