City vs city
Cos Cob vs Norwich, CT
Norwich currently scores 8 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 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 · Norwich: 45/100
Norwich is 8 points higher.
Flood
Cos Cob: 0/100 · Norwich: 55/100
Norwich is 55 points higher.
Cos Cob: FEMA NFHL flood zones: 0 features intersect this tile.
Norwich: FEMA NFHL flood zones: 14 features intersect this tile.
Wind
Cos Cob: 25/100 · Norwich: 31/100
Norwich is 6 points higher.
Cos Cob: Wind exposure derived from ingested design wind / climatology tiles.
Norwich: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Cos Cob: 18/100 · Norwich: 10/100
Cos Cob is 8 points higher.
Cos Cob: Lightning exposure derived from ingested climatology tiles.
Norwich: Lightning exposure derived from ingested climatology tiles.
Tornado
Cos Cob: 0/100 · Norwich: 0/100
No gap.
Cos Cob: Tornado risk derived from NOAA SPC historical reports.
Norwich: Tornado risk derived from NOAA SPC historical reports.
Hail
Cos Cob: 10/100 · Norwich: 33/100
Norwich is 23 points higher.
Cos Cob: Hail risk derived from NOAA SPC historical reports.
Norwich: Hail risk derived from NOAA SPC historical reports.
Storm surge
Cos Cob: 99/100 · Norwich: 95/100
Cos Cob is 4 points higher.
Cos Cob: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Norwich: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Wildfire
Cos Cob: 64/100 · Norwich: 59/100
Cos Cob is 5 points higher.
Cos Cob: Wildfire exposure derived from ingested fire potential tiles.
Norwich: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Cos Cob: 42/100 · Norwich: 32/100
Cos Cob is 10 points higher.
Cos Cob: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Norwich: Air quality signal derived from the latest EPA AirNow combined AQI grid.