City vs city
Cos Cob vs Old Greenwich, CT
Cos Cob and Old Greenwich 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 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
Cos Cob: 37/100 · Old Greenwich: 37/100
No gap.
Flood
Cos Cob: 0/100 · Old Greenwich: 0/100
No gap.
Cos Cob: FEMA NFHL flood zones: 0 features intersect this tile.
Old Greenwich: FEMA NFHL flood zones: 0 features intersect this tile.
Wind
Cos Cob: 25/100 · Old Greenwich: 25/100
No gap.
Cos Cob: Wind exposure derived from ingested design wind / climatology tiles.
Old Greenwich: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Cos Cob: 18/100 · Old Greenwich: 18/100
No gap.
Cos Cob: Lightning exposure derived from ingested climatology tiles.
Old Greenwich: Lightning exposure derived from ingested climatology tiles.
Tornado
Cos Cob: 0/100 · Old Greenwich: 0/100
No gap.
Cos Cob: Tornado risk derived from NOAA SPC historical reports.
Old Greenwich: Tornado risk derived from NOAA SPC historical reports.
Hail
Cos Cob: 10/100 · Old Greenwich: 10/100
No gap.
Cos Cob: Hail risk derived from NOAA SPC historical reports.
Old Greenwich: Hail risk derived from NOAA SPC historical reports.
Storm surge
Cos Cob: 99/100 · Old Greenwich: 99/100
No gap.
Cos Cob: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Old Greenwich: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Wildfire
Cos Cob: 64/100 · Old Greenwich: 64/100
No gap.
Cos Cob: Wildfire exposure derived from ingested fire potential tiles.
Old Greenwich: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Cos Cob: 42/100 · Old Greenwich: 42/100
No gap.
Cos Cob: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Old Greenwich: Air quality signal derived from the latest EPA AirNow combined AQI grid.