City vs city
Healdsburg vs Petaluma, CA
Healdsburg currently scores 1 points higher overall than Petaluma, 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
Healdsburg: 29/100 · Petaluma: 28/100
Healdsburg is 1 points higher.
Flood
Healdsburg: 45/100 · Petaluma: 35/100
Healdsburg is 10 points higher.
Healdsburg: FEMA NFHL flood zones: 7 features intersect this tile.
Petaluma: FEMA NFHL flood zones: 10 features intersect this tile.
Wind
Healdsburg: 2/100 · Petaluma: 2/100
No gap.
Healdsburg: Wind exposure derived from ingested design wind / climatology tiles.
Petaluma: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Healdsburg: 0/100 · Petaluma: 0/100
No gap.
Healdsburg: Lightning exposure derived from ingested climatology tiles.
Petaluma: Lightning exposure derived from ingested climatology tiles.
Tornado
Healdsburg: 0/100 · Petaluma: 0/100
No gap.
Healdsburg: Tornado risk derived from NOAA SPC historical reports.
Petaluma: Tornado risk derived from NOAA SPC historical reports.
Hail
Healdsburg: 1/100 · Petaluma: 12/100
Petaluma is 11 points higher.
Healdsburg: Hail risk derived from NOAA SPC historical reports.
Petaluma: Hail risk derived from NOAA SPC historical reports.
Storm surge
Healdsburg: Unavailable · Petaluma: Unavailable
A score difference cannot be calculated without both sources.
Healdsburg: Storm surge model is not available for this location yet.
Petaluma: Storm surge model is not available for this location yet.
Wildfire
Healdsburg: 76/100 · Petaluma: 69/100
Healdsburg is 7 points higher.
Healdsburg: Wildfire exposure derived from ingested fire potential tiles.
Petaluma: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Healdsburg: 22/100 · Petaluma: 24/100
Petaluma is 2 points higher.
Healdsburg: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Petaluma: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.