City vs city
Old Greenwich vs Plymouth, CT
Old Greenwich currently scores 3 points higher overall than Plymouth, 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
Old Greenwich: 37/100 · Plymouth: 34/100
Old Greenwich is 3 points higher.
Flood
Old Greenwich: 0/100 · Plymouth: 44/100
Plymouth is 44 points higher.
Old Greenwich: FEMA NFHL flood zones: 0 features intersect this tile.
Plymouth: FEMA NFHL flood zones: 6 features intersect this tile.
Wind
Old Greenwich: 25/100 · Plymouth: 25/100
No gap.
Old Greenwich: Wind exposure derived from ingested design wind / climatology tiles.
Plymouth: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Old Greenwich: 18/100 · Plymouth: 13/100
Old Greenwich is 5 points higher.
Old Greenwich: Lightning exposure derived from ingested climatology tiles.
Plymouth: Lightning exposure derived from ingested climatology tiles.
Tornado
Old Greenwich: 0/100 · Plymouth: 27/100
Plymouth is 27 points higher.
Old Greenwich: Tornado risk derived from NOAA SPC historical reports.
Plymouth: Tornado risk derived from NOAA SPC historical reports.
Hail
Old Greenwich: 10/100 · Plymouth: 38/100
Plymouth is 28 points higher.
Old Greenwich: Hail risk derived from NOAA SPC historical reports.
Plymouth: Hail risk derived from NOAA SPC historical reports.
Storm surge
Old Greenwich: 99/100 · Plymouth: Unavailable
A score difference cannot be calculated without both sources.
Old Greenwich: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Plymouth: Storm surge model is not available for this location yet.
Wildfire
Old Greenwich: 64/100 · Plymouth: 61/100
Old Greenwich is 3 points higher.
Old Greenwich: Wildfire exposure derived from ingested fire potential tiles.
Plymouth: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Old Greenwich: 42/100 · Plymouth: 28/100
Old Greenwich is 14 points higher.
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.
Plymouth: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.