City vs city
Blue Hills vs Groton, CT
Blue Hills currently scores 2 points higher overall than Groton, with the largest gap in tornado.
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
Blue Hills: 45/100 · Groton: 43/100
Blue Hills is 2 points higher.
Flood
Blue Hills: 96/100 · Groton: 97/100
Groton is 1 points higher.
Blue Hills: FEMA NFHL flood zones: 12 features intersect this tile.
Groton: FEMA NFHL flood zones: 19 features intersect this tile.
Wind
Blue Hills: 25/100 · Groton: 35/100
Groton is 10 points higher.
Blue Hills: Wind exposure derived from ingested design wind / climatology tiles.
Groton: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Blue Hills: 11/100 · Groton: 9/100
Blue Hills is 2 points higher.
Blue Hills: Lightning exposure derived from ingested climatology tiles.
Groton: Lightning exposure derived from ingested climatology tiles.
Tornado
Blue Hills: 50/100 · Groton: 0/100
Blue Hills is 50 points higher.
Blue Hills: Tornado risk derived from NOAA SPC historical reports.
Groton: Tornado risk derived from NOAA SPC historical reports.
Hail
Blue Hills: 43/100 · Groton: 6/100
Blue Hills is 37 points higher.
Blue Hills: Hail risk derived from NOAA SPC historical reports.
Groton: Hail risk derived from NOAA SPC historical reports.
Storm surge
Blue Hills: Unavailable · Groton: 97/100
A score difference cannot be calculated without both sources.
Blue Hills: Storm surge model is not available for this location yet.
Groton: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Wildfire
Blue Hills: 62/100 · Groton: 27/100
Blue Hills is 35 points higher.
Blue Hills: Wildfire exposure derived from ingested fire potential tiles.
Groton: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Blue Hills: 28/100 · Groton: 33/100
Groton is 5 points higher.
Blue Hills: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
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.