City vs city
Discovery Bay vs Tracy, CA
Tracy currently scores 1 points higher overall than Discovery Bay, 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
Discovery Bay: 25/100 · Tracy: 26/100
Tracy is 1 points higher.
Flood
Discovery Bay: 51/100 · Tracy: 56/100
Tracy is 5 points higher.
Discovery Bay: FEMA NFHL flood zones: 10 features intersect this tile.
Tracy: FEMA NFHL flood zones: 5 features intersect this tile.
Wind
Discovery Bay: 3/100 · Tracy: 3/100
No gap.
Discovery Bay: Wind exposure derived from ingested design wind / climatology tiles.
Tracy: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Discovery Bay: 0/100 · Tracy: 0/100
No gap.
Discovery Bay: Lightning exposure derived from ingested climatology tiles.
Tracy: Lightning exposure derived from ingested climatology tiles.
Tornado
Discovery Bay: 4/100 · Tracy: 4/100
No gap.
Discovery Bay: Tornado risk derived from NOAA SPC historical reports.
Tracy: Tornado risk derived from NOAA SPC historical reports.
Hail
Discovery Bay: 5/100 · Tracy: 1/100
Discovery Bay is 4 points higher.
Discovery Bay: Hail risk derived from NOAA SPC historical reports.
Tracy: Hail risk derived from NOAA SPC historical reports.
Storm surge
Discovery Bay: Unavailable · Tracy: Unavailable
A score difference cannot be calculated without both sources.
Discovery Bay: Storm surge model is not available for this location yet.
Tracy: Storm surge model is not available for this location yet.
Wildfire
Discovery Bay: 62/100 · Tracy: 63/100
Tracy is 1 points higher.
Discovery Bay: Wildfire exposure derived from ingested fire potential tiles.
Tracy: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Discovery Bay: 26/100 · Tracy: 27/100
Tracy is 1 points higher.
Discovery Bay: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Tracy: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.