City vs city
Half Moon Bay vs Redwood City, CA
Redwood City currently scores 12 points higher overall than Half Moon Bay, with the largest gap in wildfire.
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
Half Moon Bay: 16/100 · Redwood City: 28/100
Redwood City is 12 points higher.
Flood
Half Moon Bay: 47/100 · Redwood City: 56/100
Redwood City is 9 points higher.
Half Moon Bay: FEMA NFHL flood zones: 8 features intersect this tile.
Redwood City: FEMA NFHL flood zones: 21 features intersect this tile.
Wind
Half Moon Bay: 1/100 · Redwood City: 2/100
Redwood City is 1 points higher.
Half Moon Bay: Wind exposure derived from ingested design wind / climatology tiles.
Redwood City: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Half Moon Bay: 0/100 · Redwood City: 0/100
No gap.
Half Moon Bay: Lightning exposure derived from ingested climatology tiles.
Redwood City: Lightning exposure derived from ingested climatology tiles.
Tornado
Half Moon Bay: 4/100 · Redwood City: 0/100
Half Moon Bay is 4 points higher.
Half Moon Bay: Tornado risk derived from NOAA SPC historical reports.
Redwood City: Tornado risk derived from NOAA SPC historical reports.
Hail
Half Moon Bay: 8/100 · Redwood City: 5/100
Half Moon Bay is 3 points higher.
Half Moon Bay: Hail risk derived from NOAA SPC historical reports.
Redwood City: Hail risk derived from NOAA SPC historical reports.
Storm surge
Half Moon Bay: Unavailable · Redwood City: Unavailable
A score difference cannot be calculated without both sources.
Half Moon Bay: Storm surge model is not available for this location yet.
Redwood City: Storm surge model is not available for this location yet.
Wildfire
Half Moon Bay: 13/100 · Redwood City: 53/100
Redwood City is 40 points higher.
Half Moon Bay: Wildfire exposure derived from ingested fire potential tiles.
Redwood City: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Half Moon Bay: 23/100 · Redwood City: 22/100
Half Moon Bay is 1 points higher.
Half Moon 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.
Redwood City: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.