City vs city
East Harwich vs West Chatham, MA
West Chatham currently scores 8 points higher overall than East 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 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
East Harwich: 34/100 · West Chatham: 42/100
West Chatham is 8 points higher.
Flood
East Harwich: 36/100 · West Chatham: 100/100
West Chatham is 64 points higher.
East Harwich: FEMA NFHL flood zones: 6 features intersect this tile.
West Chatham: FEMA NFHL flood zones: 6 features intersect this tile.
Wind
East Harwich: 37/100 · West Chatham: 39/100
West Chatham is 2 points higher.
East Harwich: Wind exposure derived from ingested design wind / climatology tiles.
West Chatham: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
East Harwich: 9/100 · West Chatham: 7/100
East Harwich is 2 points higher.
East Harwich: Lightning exposure derived from ingested climatology tiles.
West Chatham: Lightning exposure derived from ingested climatology tiles.
Tornado
East Harwich: 0/100 · West Chatham: 0/100
No gap.
East Harwich: Tornado risk derived from NOAA SPC historical reports.
West Chatham: Tornado risk derived from NOAA SPC historical reports.
Hail
East Harwich: 4/100 · West Chatham: 2/100
East Harwich is 2 points higher.
East Harwich: Hail risk derived from NOAA SPC historical reports.
West Chatham: Hail risk derived from NOAA SPC historical reports.
Storm surge
East Harwich: 95/100 · West Chatham: 92/100
East Harwich is 3 points higher.
East Harwich: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
West Chatham: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Wildfire
East Harwich: 39/100 · West Chatham: 36/100
East Harwich is 3 points higher.
East Harwich: Wildfire exposure derived from ingested fire potential tiles.
West Chatham: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
East Harwich: 21/100 · West Chatham: 21/100
No gap.
East Harwich: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
West Chatham: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.