City vs city
South Dennis vs Yarmouth Port, MA
South Dennis currently scores 3 points higher overall than Yarmouth Port, 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
South Dennis: 33/100 · Yarmouth Port: 30/100
South Dennis is 3 points higher.
Flood
South Dennis: 30/100 · Yarmouth Port: 40/100
Yarmouth Port is 10 points higher.
South Dennis: FEMA NFHL flood zones: 6 features intersect this tile.
Yarmouth Port: FEMA NFHL flood zones: 11 features intersect this tile.
Wind
South Dennis: 36/100 · Yarmouth Port: 36/100
No gap.
South Dennis: Wind exposure derived from ingested design wind / climatology tiles.
Yarmouth Port: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
South Dennis: 11/100 · Yarmouth Port: 12/100
Yarmouth Port is 1 points higher.
South Dennis: Lightning exposure derived from ingested climatology tiles.
Yarmouth Port: Lightning exposure derived from ingested climatology tiles.
Tornado
South Dennis: 0/100 · Yarmouth Port: 4/100
Yarmouth Port is 4 points higher.
South Dennis: Tornado risk derived from NOAA SPC historical reports.
Yarmouth Port: Tornado risk derived from NOAA SPC historical reports.
Hail
South Dennis: 9/100 · Yarmouth Port: 19/100
Yarmouth Port is 10 points higher.
South Dennis: Hail risk derived from NOAA SPC historical reports.
Yarmouth Port: Hail risk derived from NOAA SPC historical reports.
Storm surge
South Dennis: 95/100 · Yarmouth Port: 95/100
No gap.
South Dennis: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Yarmouth Port: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Wildfire
South Dennis: 23/100 · Yarmouth Port: 5/100
South Dennis is 18 points higher.
South Dennis: Wildfire exposure derived from ingested fire potential tiles.
Yarmouth Port: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
South Dennis: 26/100 · Yarmouth Port: 26/100
No gap.
South Dennis: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Yarmouth Port: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.