City vs city
Derby vs Groton, CT
Groton currently scores 7 points higher overall than Derby, 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
Derby: 36/100 · Groton: 43/100
Groton is 7 points higher.
Flood
Derby: 55/100 · Groton: 97/100
Groton is 42 points higher.
Derby: FEMA NFHL flood zones: 11 features intersect this tile.
Groton: FEMA NFHL flood zones: 19 features intersect this tile.
Wind
Derby: 26/100 · Groton: 35/100
Groton is 9 points higher.
Derby: Wind exposure derived from ingested design wind / climatology tiles.
Groton: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Derby: 14/100 · Groton: 9/100
Derby is 5 points higher.
Derby: Lightning exposure derived from ingested climatology tiles.
Groton: Lightning exposure derived from ingested climatology tiles.
Tornado
Derby: 0/100 · Groton: 0/100
No gap.
Derby: Tornado risk derived from NOAA SPC historical reports.
Groton: Tornado risk derived from NOAA SPC historical reports.
Hail
Derby: 19/100 · Groton: 6/100
Derby is 13 points higher.
Derby: Hail risk derived from NOAA SPC historical reports.
Groton: Hail risk derived from NOAA SPC historical reports.
Storm surge
Derby: Unavailable · Groton: 97/100
A score difference cannot be calculated without both sources.
Derby: Storm surge model is not available for this location yet.
Groton: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Wildfire
Derby: 61/100 · Groton: 27/100
Derby is 34 points higher.
Derby: Wildfire exposure derived from ingested fire potential tiles.
Groton: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Derby: 43/100 · Groton: 33/100
Derby is 10 points higher.
Derby: 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.
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