City vs city
Hamden vs Old Greenwich, CT
Old Greenwich currently scores 3 points higher overall than Hamden, 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
Hamden: 34/100 · Old Greenwich: 37/100
Old Greenwich is 3 points higher.
Flood
Hamden: 52/100 · Old Greenwich: 0/100
Hamden is 52 points higher.
Hamden: FEMA NFHL flood zones: 8 features intersect this tile.
Old Greenwich: FEMA NFHL flood zones: 0 features intersect this tile.
Wind
Hamden: 27/100 · Old Greenwich: 25/100
Hamden is 2 points higher.
Hamden: Wind exposure derived from ingested design wind / climatology tiles.
Old Greenwich: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Hamden: 14/100 · Old Greenwich: 18/100
Old Greenwich is 4 points higher.
Hamden: Lightning exposure derived from ingested climatology tiles.
Old Greenwich: Lightning exposure derived from ingested climatology tiles.
Tornado
Hamden: 0/100 · Old Greenwich: 0/100
No gap.
Hamden: Tornado risk derived from NOAA SPC historical reports.
Old Greenwich: Tornado risk derived from NOAA SPC historical reports.
Hail
Hamden: 14/100 · Old Greenwich: 10/100
Hamden is 4 points higher.
Hamden: Hail risk derived from NOAA SPC historical reports.
Old Greenwich: Hail risk derived from NOAA SPC historical reports.
Storm surge
Hamden: Unavailable · Old Greenwich: 99/100
A score difference cannot be calculated without both sources.
Hamden: Storm surge model is not available for this location yet.
Old Greenwich: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Wildfire
Hamden: 64/100 · Old Greenwich: 64/100
No gap.
Hamden: Wildfire exposure derived from ingested fire potential tiles.
Old Greenwich: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Hamden: 34/100 · Old Greenwich: 42/100
Old Greenwich is 8 points higher.
Hamden: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Old Greenwich: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.