City vs city
Alpena vs Rapid City, SD
Rapid City currently scores 5 points higher overall than Alpena, 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 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: 38/100 · Rapid City: 43/100
Rapid City is 5 points higher.
Flood
Alpena: 34/100 · Rapid City: 53/100
Rapid City is 19 points higher.
Alpena: FEMA NFHL flood zones: 9 features intersect this tile.
Rapid City: FEMA NFHL flood zones: 8 features intersect this tile.
Wind
Alpena: 21/100 · Rapid City: 20/100
Alpena is 1 points higher.
Alpena: Wind exposure derived from ingested design wind / climatology tiles.
Rapid City: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Alpena: 51/100 · Rapid City: 23/100
Alpena is 28 points higher.
Alpena: Lightning exposure derived from ingested climatology tiles.
Rapid City: Lightning exposure derived from ingested climatology tiles.
Tornado
Alpena: 0/100 · Rapid City: 23/100
Rapid City is 23 points higher.
Alpena: Tornado risk derived from NOAA SPC historical reports.
Rapid City: Tornado risk derived from NOAA SPC historical reports.
Hail
Alpena: 36/100 · Rapid City: 100/100
Rapid City is 64 points higher.
Alpena: Hail risk derived from NOAA SPC historical reports.
Rapid City: Hail risk derived from NOAA SPC historical reports.
Storm surge
Alpena: Unavailable · Rapid City: Unavailable
A score difference cannot be calculated without both sources.
Alpena: Storm surge model is not available for this location yet.
Rapid City: Storm surge model is not available for this location yet.
Wildfire
Alpena: 49/100 · Rapid City: 57/100
Rapid City is 8 points higher.
Alpena: Wildfire exposure derived from ingested fire potential tiles.
Rapid City: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Alpena: Unavailable · Rapid City: 28/100
A score difference cannot be calculated without both sources.
Alpena: Air quality model is not available for this location yet.
Rapid City: Air quality signal derived from the latest EPA AirNow combined AQI grid.