City vs city
Clarkson Valley vs Ellisville, MO
Clarkson Valley currently scores 5 points higher overall than Ellisville, 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
Clarkson Valley: 50/100 · Ellisville: 45/100
Clarkson Valley is 5 points higher.
Flood
Clarkson Valley: 54/100 · Ellisville: 40/100
Clarkson Valley is 14 points higher.
Clarkson Valley: FEMA NFHL flood zones: 7 features intersect this tile.
Ellisville: FEMA NFHL flood zones: 6 features intersect this tile.
Wind
Clarkson Valley: 16/100 · Ellisville: 16/100
No gap.
Clarkson Valley: Wind exposure derived from ingested design wind / climatology tiles.
Ellisville: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Clarkson Valley: 43/100 · Ellisville: 44/100
Ellisville is 1 points higher.
Clarkson Valley: Lightning exposure derived from ingested climatology tiles.
Ellisville: Lightning exposure derived from ingested climatology tiles.
Tornado
Clarkson Valley: 69/100 · Ellisville: 54/100
Clarkson Valley is 15 points higher.
Clarkson Valley: Tornado risk derived from NOAA SPC historical reports.
Ellisville: Tornado risk derived from NOAA SPC historical reports.
Hail
Clarkson Valley: 100/100 · Ellisville: 100/100
No gap.
Clarkson Valley: Hail risk derived from NOAA SPC historical reports.
Ellisville: Hail risk derived from NOAA SPC historical reports.
Storm surge
Clarkson Valley: Unavailable · Ellisville: Unavailable
A score difference cannot be calculated without both sources.
Clarkson Valley: Storm surge model is not available for this location yet.
Ellisville: Storm surge model is not available for this location yet.
Wildfire
Clarkson Valley: 41/100 · Ellisville: 39/100
Clarkson Valley is 2 points higher.
Clarkson Valley: Wildfire exposure derived from ingested fire potential tiles.
Ellisville: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Clarkson Valley: 27/100 · Ellisville: 25/100
Clarkson Valley is 2 points higher.
Clarkson Valley: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Ellisville: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.