City vs city
Mount Vernon vs Rapid City, SD
Rapid City currently scores 1 points higher overall than Mount Vernon, 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
Mount Vernon: 42/100 · Rapid City: 43/100
Rapid City is 1 points higher.
Flood
Mount Vernon: 41/100 · Rapid City: 53/100
Rapid City is 12 points higher.
Mount Vernon: FEMA NFHL flood zones: 2 features intersect this tile.
Rapid City: FEMA NFHL flood zones: 8 features intersect this tile.
Wind
Mount Vernon: 21/100 · Rapid City: 20/100
Mount Vernon is 1 points higher.
Mount Vernon: Wind exposure derived from ingested design wind / climatology tiles.
Rapid City: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Mount Vernon: 49/100 · Rapid City: 23/100
Mount Vernon is 26 points higher.
Mount Vernon: Lightning exposure derived from ingested climatology tiles.
Rapid City: Lightning exposure derived from ingested climatology tiles.
Tornado
Mount Vernon: 23/100 · Rapid City: 23/100
No gap.
Mount Vernon: Tornado risk derived from NOAA SPC historical reports.
Rapid City: Tornado risk derived from NOAA SPC historical reports.
Hail
Mount Vernon: 71/100 · Rapid City: 100/100
Rapid City is 29 points higher.
Mount Vernon: Hail risk derived from NOAA SPC historical reports.
Rapid City: Hail risk derived from NOAA SPC historical reports.
Storm surge
Mount Vernon: Unavailable · Rapid City: Unavailable
A score difference cannot be calculated without both sources.
Mount Vernon: Storm surge model is not available for this location yet.
Rapid City: Storm surge model is not available for this location yet.
Wildfire
Mount Vernon: 47/100 · Rapid City: 57/100
Rapid City is 10 points higher.
Mount Vernon: Wildfire exposure derived from ingested fire potential tiles.
Rapid City: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Mount Vernon: Unavailable · Rapid City: 28/100
A score difference cannot be calculated without both sources.
Mount Vernon: Air quality model is not available for this location yet.
Rapid City: Air quality signal derived from the latest EPA AirNow combined AQI grid.