City vs city
Alcester vs Rapid City, SD
Rapid City currently scores 2 points higher overall than Alcester, 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
Alcester: 40/100 · Rapid City: 42/100
Rapid City is 2 points higher.
Flood
Alcester: 68/100 · Rapid City: 49/100
Alcester is 19 points higher.
Alcester: FEMA NFHL flood zones: 9 features intersect this tile.
Rapid City: FEMA NFHL flood zones: 5 features intersect this tile.
Wind
Alcester: 20/100 · Rapid City: 20/100
No gap.
Alcester: Wind exposure derived from ingested design wind / climatology tiles.
Rapid City: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Alcester: 42/100 · Rapid City: 24/100
Alcester is 18 points higher.
Alcester: Lightning exposure derived from ingested climatology tiles.
Rapid City: Lightning exposure derived from ingested climatology tiles.
Tornado
Alcester: 23/100 · Rapid City: 8/100
Alcester is 15 points higher.
Alcester: Tornado risk derived from NOAA SPC historical reports.
Rapid City: Tornado risk derived from NOAA SPC historical reports.
Hail
Alcester: 52/100 · Rapid City: 100/100
Rapid City is 48 points higher.
Alcester: Hail risk derived from NOAA SPC historical reports.
Rapid City: Hail risk derived from NOAA SPC historical reports.
Storm surge
Alcester: Unavailable · Rapid City: Unavailable
A score difference cannot be calculated without both sources.
Alcester: Storm surge model is not available for this location yet.
Rapid City: Storm surge model is not available for this location yet.
Wildfire
Alcester: 50/100 · Rapid City: 67/100
Rapid City is 17 points higher.
Alcester: Wildfire exposure derived from ingested fire potential tiles.
Rapid City: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Alcester: 22/100 · Rapid City: 29/100
Rapid City is 7 points higher.
Alcester: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Rapid City: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.