City vs city
Byrnes Mill vs Saint Clair, MO
Byrnes Mill and Saint Clair 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 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
Byrnes Mill: 40/100 · Saint Clair: 40/100
No gap.
Flood
Byrnes Mill: 42/100 · Saint Clair: 51/100
Saint Clair is 9 points higher.
Byrnes Mill: FEMA NFHL flood zones: 6 features intersect this tile.
Saint Clair: FEMA NFHL flood zones: 10 features intersect this tile.
Wind
Byrnes Mill: 16/100 · Saint Clair: 16/100
No gap.
Byrnes Mill: Wind exposure derived from ingested design wind / climatology tiles.
Saint Clair: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Byrnes Mill: 45/100 · Saint Clair: 52/100
Saint Clair is 7 points higher.
Byrnes Mill: Lightning exposure derived from ingested climatology tiles.
Saint Clair: Lightning exposure derived from ingested climatology tiles.
Tornado
Byrnes Mill: 15/100 · Saint Clair: 12/100
Byrnes Mill is 3 points higher.
Byrnes Mill: Tornado risk derived from NOAA SPC historical reports.
Saint Clair: Tornado risk derived from NOAA SPC historical reports.
Hail
Byrnes Mill: 100/100 · Saint Clair: 84/100
Byrnes Mill is 16 points higher.
Byrnes Mill: Hail risk derived from NOAA SPC historical reports.
Saint Clair: Hail risk derived from NOAA SPC historical reports.
Storm surge
Byrnes Mill: Unavailable · Saint Clair: Unavailable
A score difference cannot be calculated without both sources.
Byrnes Mill: Storm surge model is not available for this location yet.
Saint Clair: Storm surge model is not available for this location yet.
Wildfire
Byrnes Mill: 41/100 · Saint Clair: 41/100
No gap.
Byrnes Mill: Wildfire exposure derived from ingested fire potential tiles.
Saint Clair: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Byrnes Mill: 23/100 · Saint Clair: 27/100
Saint Clair is 4 points higher.
Byrnes Mill: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Saint Clair: Air quality signal derived from the latest EPA AirNow combined AQI grid.