City vs city
Alamo vs Castro Valley, CA
Alamo currently scores 2 points higher overall than Castro Valley, with the largest gap 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 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
Alamo: 26/100 · Castro Valley: 24/100
Alamo is 2 points higher.
Flood
Alamo: 29/100 · Castro Valley: 26/100
Alamo is 3 points higher.
Alamo: FEMA NFHL flood zones: 13 features intersect this tile.
Castro Valley: FEMA NFHL flood zones: 4 features intersect this tile.
Wind
Alamo: 2/100 · Castro Valley: 2/100
No gap.
Alamo: Wind exposure derived from ingested design wind / climatology tiles.
Castro Valley: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Alamo: 0/100 · Castro Valley: 0/100
No gap.
Alamo: Lightning exposure derived from ingested climatology tiles.
Castro Valley: Lightning exposure derived from ingested climatology tiles.
Tornado
Alamo: 0/100 · Castro Valley: 0/100
No gap.
Alamo: Tornado risk derived from NOAA SPC historical reports.
Castro Valley: Tornado risk derived from NOAA SPC historical reports.
Hail
Alamo: 5/100 · Castro Valley: 1/100
Alamo is 4 points higher.
Alamo: Hail risk derived from NOAA SPC historical reports.
Castro Valley: Hail risk derived from NOAA SPC historical reports.
Storm surge
Alamo: Unavailable · Castro Valley: Unavailable
A score difference cannot be calculated without both sources.
Alamo: Storm surge model is not available for this location yet.
Castro Valley: Storm surge model is not available for this location yet.
Wildfire
Alamo: 68/100 · Castro Valley: 67/100
Alamo is 1 points higher.
Alamo: Wildfire exposure derived from ingested fire potential tiles.
Castro Valley: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Alamo: 24/100 · Castro Valley: 24/100
No gap.
Alamo: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Castro Valley: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.