City vs city
Green Harbor vs South Duxbury, MA
Green Harbor and South Duxbury are tied on overall score, with the biggest factor difference 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
Green Harbor: 38/100 · South Duxbury: 38/100
No gap.
Flood
Green Harbor: 97/100 · South Duxbury: 97/100
No gap.
Green Harbor: FEMA NFHL flood zones: 25 features intersect this tile.
South Duxbury: FEMA NFHL flood zones: 25 features intersect this tile.
Wind
Green Harbor: 32/100 · South Duxbury: 32/100
No gap.
Green Harbor: Wind exposure derived from ingested design wind / climatology tiles.
South Duxbury: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Green Harbor: 12/100 · South Duxbury: 12/100
No gap.
Green Harbor: Lightning exposure derived from ingested climatology tiles.
South Duxbury: Lightning exposure derived from ingested climatology tiles.
Tornado
Green Harbor: 4/100 · South Duxbury: 4/100
No gap.
Green Harbor: Tornado risk derived from NOAA SPC historical reports.
South Duxbury: Tornado risk derived from NOAA SPC historical reports.
Hail
Green Harbor: 25/100 · South Duxbury: 25/100
No gap.
Green Harbor: Hail risk derived from NOAA SPC historical reports.
South Duxbury: Hail risk derived from NOAA SPC historical reports.
Storm surge
Green Harbor: 95/100 · South Duxbury: 95/100
No gap.
Green Harbor: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
South Duxbury: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Wildfire
Green Harbor: 12/100 · South Duxbury: 12/100
No gap.
Green Harbor: Wildfire exposure derived from ingested fire potential tiles.
South Duxbury: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Green Harbor: 26/100 · South Duxbury: 26/100
No gap.
Green Harbor: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
South Duxbury: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.