City vs city
St. Helena vs Vacaville, CA
Vacaville currently scores 1 points higher overall than St. Helena, with the largest gap in wildfire.
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
St. Helena: 23/100 · Vacaville: 24/100
Vacaville is 1 points higher.
Flood
St. Helena: 31/100 · Vacaville: 39/100
Vacaville is 8 points higher.
St. Helena: FEMA NFHL flood zones: 4 features intersect this tile.
Vacaville: FEMA NFHL flood zones: 17 features intersect this tile.
Wind
St. Helena: 2/100 · Vacaville: 3/100
Vacaville is 1 points higher.
St. Helena: Wind exposure derived from ingested design wind / climatology tiles.
Vacaville: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
St. Helena: 0/100 · Vacaville: 0/100
No gap.
St. Helena: Lightning exposure derived from ingested climatology tiles.
Vacaville: Lightning exposure derived from ingested climatology tiles.
Tornado
St. Helena: 0/100 · Vacaville: 4/100
Vacaville is 4 points higher.
St. Helena: Tornado risk derived from NOAA SPC historical reports.
Vacaville: Tornado risk derived from NOAA SPC historical reports.
Hail
St. Helena: 1/100 · Vacaville: 9/100
Vacaville is 8 points higher.
St. Helena: Hail risk derived from NOAA SPC historical reports.
Vacaville: Hail risk derived from NOAA SPC historical reports.
Storm surge
St. Helena: Unavailable · Vacaville: Unavailable
A score difference cannot be calculated without both sources.
St. Helena: Storm surge model is not available for this location yet.
Vacaville: Storm surge model is not available for this location yet.
Wildfire
St. Helena: 56/100 · Vacaville: 66/100
Vacaville is 10 points higher.
St. Helena: Wildfire exposure derived from ingested fire potential tiles.
Vacaville: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
St. Helena: 26/100 · Vacaville: 24/100
St. Helena is 2 points higher.
St. Helena: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Vacaville: Air quality signal derived from the latest EPA AirNow combined AQI grid.