City vs city
Northwest Harwich vs West Chatham, MA
West Chatham currently scores 10 points higher overall than Northwest Harwich, 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 is a current EPA AirNow signal; 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
Northwest Harwich: 32/100 · West Chatham: 42/100
West Chatham is 10 points higher.
Flood
Northwest Harwich: 43/100 · West Chatham: 100/100
West Chatham is 57 points higher.
Northwest Harwich: FEMA NFHL flood zones: 14 features intersect this tile.
West Chatham: FEMA NFHL flood zones: 6 features intersect this tile.
Wind
Northwest Harwich: 37/100 · West Chatham: 39/100
West Chatham is 2 points higher.
Northwest Harwich: Wind exposure derived from ingested design wind / climatology tiles.
West Chatham: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Northwest Harwich: 9/100 · West Chatham: 7/100
Northwest Harwich is 2 points higher.
Northwest Harwich: Lightning exposure derived from ingested climatology tiles.
West Chatham: Lightning exposure derived from ingested climatology tiles.
Tornado
Northwest Harwich: 0/100 · West Chatham: 0/100
No gap.
Northwest Harwich: Tornado risk derived from NOAA SPC historical reports.
West Chatham: Tornado risk derived from NOAA SPC historical reports.
Hail
Northwest Harwich: 7/100 · West Chatham: 2/100
Northwest Harwich is 5 points higher.
Northwest Harwich: Hail risk derived from NOAA SPC historical reports.
West Chatham: Hail risk derived from NOAA SPC historical reports.
Storm surge
Northwest Harwich: 97/100 · West Chatham: 92/100
Northwest Harwich is 5 points higher.
Northwest Harwich: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
West Chatham: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Wildfire
Northwest Harwich: 6/100 · West Chatham: 36/100
West Chatham is 30 points higher.
Northwest Harwich: Wildfire exposure derived from ingested fire potential tiles.
West Chatham: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Northwest Harwich: 26/100 · West Chatham: 21/100
Northwest Harwich is 5 points higher.
Northwest Harwich: Air quality signal derived from the latest EPA AirNow combined AQI grid.
West Chatham: Air quality signal derived from the latest EPA AirNow combined AQI grid.