City vs city
Cos Cob vs Groton, CT
Groton currently scores 6 points higher overall than Cos Cob, 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
Cos Cob: 37/100 · Groton: 43/100
Groton is 6 points higher.
Flood
Cos Cob: 0/100 · Groton: 97/100
Groton is 97 points higher.
Cos Cob: FEMA NFHL flood zones: 0 features intersect this tile.
Groton: FEMA NFHL flood zones: 19 features intersect this tile.
Wind
Cos Cob: 25/100 · Groton: 35/100
Groton is 10 points higher.
Cos Cob: Wind exposure derived from ingested design wind / climatology tiles.
Groton: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Cos Cob: 18/100 · Groton: 9/100
Cos Cob is 9 points higher.
Cos Cob: Lightning exposure derived from ingested climatology tiles.
Groton: Lightning exposure derived from ingested climatology tiles.
Tornado
Cos Cob: 0/100 · Groton: 0/100
No gap.
Cos Cob: Tornado risk derived from NOAA SPC historical reports.
Groton: Tornado risk derived from NOAA SPC historical reports.
Hail
Cos Cob: 10/100 · Groton: 6/100
Cos Cob is 4 points higher.
Cos Cob: Hail risk derived from NOAA SPC historical reports.
Groton: Hail risk derived from NOAA SPC historical reports.
Storm surge
Cos Cob: 99/100 · Groton: 97/100
Cos Cob is 2 points higher.
Cos Cob: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Groton: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Wildfire
Cos Cob: 64/100 · Groton: 27/100
Cos Cob is 37 points higher.
Cos Cob: Wildfire exposure derived from ingested fire potential tiles.
Groton: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Cos Cob: 42/100 · Groton: 33/100
Cos Cob is 9 points higher.
Cos Cob: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Groton: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.