City vs city
Mill Spring vs St. Louis, MO
Mill Spring and St. Louis are tied on overall score, with the biggest factor difference 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
Mill Spring: 38/100 · St. Louis: 38/100
No gap.
Flood
Mill Spring: 53/100 · St. Louis: 32/100
Mill Spring is 21 points higher.
Mill Spring: FEMA NFHL flood zones: 6 features intersect this tile.
St. Louis: FEMA NFHL flood zones: 4 features intersect this tile.
Wind
Mill Spring: 15/100 · St. Louis: 16/100
St. Louis is 1 points higher.
Mill Spring: Wind exposure derived from ingested design wind / climatology tiles.
St. Louis: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Mill Spring: 86/100 · St. Louis: 39/100
Mill Spring is 47 points higher.
Mill Spring: Lightning exposure derived from ingested climatology tiles.
St. Louis: Lightning exposure derived from ingested climatology tiles.
Tornado
Mill Spring: 8/100 · St. Louis: 15/100
St. Louis is 7 points higher.
Mill Spring: Tornado risk derived from NOAA SPC historical reports.
St. Louis: Tornado risk derived from NOAA SPC historical reports.
Hail
Mill Spring: 28/100 · St. Louis: 100/100
St. Louis is 72 points higher.
Mill Spring: Hail risk derived from NOAA SPC historical reports.
St. Louis: Hail risk derived from NOAA SPC historical reports.
Storm surge
Mill Spring: Unavailable · St. Louis: Unavailable
A score difference cannot be calculated without both sources.
Mill Spring: Storm surge model is not available for this location yet.
St. Louis: Storm surge model is not available for this location yet.
Wildfire
Mill Spring: 48/100 · St. Louis: 38/100
Mill Spring is 10 points higher.
Mill Spring: Wildfire exposure derived from ingested fire potential tiles.
St. Louis: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Mill Spring: 27/100 · St. Louis: 27/100
No gap.
Mill Spring: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
St. Louis: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.