City vs city
Groton vs Old Mystic, CT
Groton and Old Mystic 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 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
Groton: 43/100 · Old Mystic: 43/100
No gap.
Flood
Groton: 97/100 · Old Mystic: 97/100
No gap.
Groton: FEMA NFHL flood zones: 19 features intersect this tile.
Old Mystic: FEMA NFHL flood zones: 19 features intersect this tile.
Wind
Groton: 35/100 · Old Mystic: 35/100
No gap.
Groton: Wind exposure derived from ingested design wind / climatology tiles.
Old Mystic: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Groton: 9/100 · Old Mystic: 9/100
No gap.
Groton: Lightning exposure derived from ingested climatology tiles.
Old Mystic: Lightning exposure derived from ingested climatology tiles.
Tornado
Groton: 0/100 · Old Mystic: 0/100
No gap.
Groton: Tornado risk derived from NOAA SPC historical reports.
Old Mystic: Tornado risk derived from NOAA SPC historical reports.
Hail
Groton: 6/100 · Old Mystic: 6/100
No gap.
Groton: Hail risk derived from NOAA SPC historical reports.
Old Mystic: Hail risk derived from NOAA SPC historical reports.
Storm surge
Groton: 97/100 · Old Mystic: 97/100
No gap.
Groton: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Old Mystic: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Wildfire
Groton: 27/100 · Old Mystic: 27/100
No gap.
Groton: Wildfire exposure derived from ingested fire potential tiles.
Old Mystic: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Groton: 33/100 · Old Mystic: 33/100
No gap.
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.
Old Mystic: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.