City vs city
Alum Rock vs San Jose, CA
San Jose currently scores 7 points higher overall than Alum Rock, 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
Alum Rock: 23/100 · San Jose: 30/100
San Jose is 7 points higher.
Flood
Alum Rock: 36/100 · San Jose: 48/100
San Jose is 12 points higher.
Alum Rock: FEMA NFHL flood zones: 26 features intersect this tile.
San Jose: FEMA NFHL flood zones: 25 features intersect this tile.
Wind
Alum Rock: 2/100 · San Jose: 2/100
No gap.
Alum Rock: Wind exposure derived from ingested design wind / climatology tiles.
San Jose: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Alum Rock: 0/100 · San Jose: 0/100
No gap.
Alum Rock: Lightning exposure derived from ingested climatology tiles.
San Jose: Lightning exposure derived from ingested climatology tiles.
Tornado
Alum Rock: 4/100 · San Jose: 0/100
Alum Rock is 4 points higher.
Alum Rock: Tornado risk derived from NOAA SPC historical reports.
San Jose: Tornado risk derived from NOAA SPC historical reports.
Hail
Alum Rock: 12/100 · San Jose: 11/100
Alum Rock is 1 points higher.
Alum Rock: Hail risk derived from NOAA SPC historical reports.
San Jose: Hail risk derived from NOAA SPC historical reports.
Storm surge
Alum Rock: Unavailable · San Jose: Unavailable
A score difference cannot be calculated without both sources.
Alum Rock: Storm surge model is not available for this location yet.
San Jose: Storm surge model is not available for this location yet.
Wildfire
Alum Rock: 65/100 · San Jose: 63/100
Alum Rock is 2 points higher.
Alum Rock: Wildfire exposure derived from ingested fire potential tiles.
San Jose: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Alum Rock: 20/100 · San Jose: 27/100
San Jose is 7 points higher.
Alum Rock: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
San Jose: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.