City vs city
Chester vs Rapid City, SD
Chester currently scores 3 points higher overall than Rapid City, 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 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
Chester: 45/100 · Rapid City: 42/100
Chester is 3 points higher.
Flood
Chester: 56/100 · Rapid City: 49/100
Chester is 7 points higher.
Chester: FEMA NFHL flood zones: 12 features intersect this tile.
Rapid City: FEMA NFHL flood zones: 5 features intersect this tile.
Wind
Chester: 20/100 · Rapid City: 20/100
No gap.
Chester: Wind exposure derived from ingested design wind / climatology tiles.
Rapid City: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Chester: 60/100 · Rapid City: 24/100
Chester is 36 points higher.
Chester: Lightning exposure derived from ingested climatology tiles.
Rapid City: Lightning exposure derived from ingested climatology tiles.
Tornado
Chester: 62/100 · Rapid City: 8/100
Chester is 54 points higher.
Chester: Tornado risk derived from NOAA SPC historical reports.
Rapid City: Tornado risk derived from NOAA SPC historical reports.
Hail
Chester: 60/100 · Rapid City: 100/100
Rapid City is 40 points higher.
Chester: Hail risk derived from NOAA SPC historical reports.
Rapid City: Hail risk derived from NOAA SPC historical reports.
Storm surge
Chester: Unavailable · Rapid City: Unavailable
A score difference cannot be calculated without both sources.
Chester: Storm surge model is not available for this location yet.
Rapid City: Storm surge model is not available for this location yet.
Wildfire
Chester: 39/100 · Rapid City: 67/100
Rapid City is 28 points higher.
Chester: Wildfire exposure derived from ingested fire potential tiles.
Rapid City: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Chester: 21/100 · Rapid City: 29/100
Rapid City is 8 points higher.
Chester: 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.