City vs city
Brisbane vs South San Francisco, CA
Brisbane and South San Francisco are tied on overall score, with the biggest factor difference 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
Brisbane: 21/100 · South San Francisco: 21/100
No gap.
Flood
Brisbane: 31/100 · South San Francisco: 31/100
No gap.
Brisbane: FEMA NFHL flood zones: 9 features intersect this tile.
South San Francisco: FEMA NFHL flood zones: 9 features intersect this tile.
Wind
Brisbane: 2/100 · South San Francisco: 2/100
No gap.
Brisbane: Wind exposure derived from ingested design wind / climatology tiles.
South San Francisco: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Brisbane: 0/100 · South San Francisco: 0/100
No gap.
Brisbane: Lightning exposure derived from ingested climatology tiles.
South San Francisco: Lightning exposure derived from ingested climatology tiles.
Tornado
Brisbane: 8/100 · South San Francisco: 8/100
No gap.
Brisbane: Tornado risk derived from NOAA SPC historical reports.
South San Francisco: Tornado risk derived from NOAA SPC historical reports.
Hail
Brisbane: 5/100 · South San Francisco: 5/100
No gap.
Brisbane: Hail risk derived from NOAA SPC historical reports.
South San Francisco: Hail risk derived from NOAA SPC historical reports.
Storm surge
Brisbane: Unavailable · South San Francisco: Unavailable
A score difference cannot be calculated without both sources.
Brisbane: Storm surge model is not available for this location yet.
South San Francisco: Storm surge model is not available for this location yet.
Wildfire
Brisbane: 54/100 · South San Francisco: 54/100
No gap.
Brisbane: Wildfire exposure derived from ingested fire potential tiles.
South San Francisco: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Brisbane: 25/100 · South San Francisco: 25/100
No gap.
Brisbane: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
South San Francisco: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.