City vs city
San Lorenzo vs Union City, CA
San Lorenzo currently scores 4 points higher overall than Union City, with the largest gap in flood.
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
San Lorenzo: 27/100 · Union City: 23/100
San Lorenzo is 4 points higher.
Flood
San Lorenzo: 56/100 · Union City: 30/100
San Lorenzo is 26 points higher.
San Lorenzo: FEMA NFHL flood zones: 22 features intersect this tile.
Union City: FEMA NFHL flood zones: 7 features intersect this tile.
Wind
San Lorenzo: 2/100 · Union City: 2/100
No gap.
San Lorenzo: Wind exposure derived from ingested design wind / climatology tiles.
Union City: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
San Lorenzo: 0/100 · Union City: 0/100
No gap.
San Lorenzo: Lightning exposure derived from ingested climatology tiles.
Union City: Lightning exposure derived from ingested climatology tiles.
Tornado
San Lorenzo: 0/100 · Union City: 0/100
No gap.
San Lorenzo: Tornado risk derived from NOAA SPC historical reports.
Union City: Tornado risk derived from NOAA SPC historical reports.
Hail
San Lorenzo: 2/100 · Union City: 1/100
San Lorenzo is 1 points higher.
San Lorenzo: Hail risk derived from NOAA SPC historical reports.
Union City: Hail risk derived from NOAA SPC historical reports.
Storm surge
San Lorenzo: Unavailable · Union City: Unavailable
A score difference cannot be calculated without both sources.
San Lorenzo: Storm surge model is not available for this location yet.
Union City: Storm surge model is not available for this location yet.
Wildfire
San Lorenzo: 52/100 · Union City: 58/100
Union City is 6 points higher.
San Lorenzo: Wildfire exposure derived from ingested fire potential tiles.
Union City: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
San Lorenzo: 24/100 · Union City: 24/100
No gap.
San Lorenzo: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Union 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.