City vs city
Andover vs Onset, MA
Onset currently scores 8 points higher overall than Andover, with the largest gap in wildfire.
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
Andover: 29/100 · Onset: 37/100
Onset is 8 points higher.
Flood
Andover: 38/100 · Onset: 58/100
Onset is 20 points higher.
Andover: FEMA NFHL flood zones: 8 features intersect this tile.
Onset: FEMA NFHL flood zones: 19 features intersect this tile.
Wind
Andover: 25/100 · Onset: 36/100
Onset is 11 points higher.
Andover: Wind exposure derived from ingested design wind / climatology tiles.
Onset: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Andover: 8/100 · Onset: 13/100
Onset is 5 points higher.
Andover: Lightning exposure derived from ingested climatology tiles.
Onset: Lightning exposure derived from ingested climatology tiles.
Tornado
Andover: 0/100 · Onset: 0/100
No gap.
Andover: Tornado risk derived from NOAA SPC historical reports.
Onset: Tornado risk derived from NOAA SPC historical reports.
Hail
Andover: 25/100 · Onset: 13/100
Andover is 12 points higher.
Andover: Hail risk derived from NOAA SPC historical reports.
Onset: Hail risk derived from NOAA SPC historical reports.
Storm surge
Andover: Unavailable · Onset: 99/100
A score difference cannot be calculated without both sources.
Andover: Storm surge model is not available for this location yet.
Onset: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Wildfire
Andover: 57/100 · Onset: 12/100
Andover is 45 points higher.
Andover: Wildfire exposure derived from ingested fire potential tiles.
Onset: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Andover: 22/100 · Onset: 27/100
Onset is 5 points higher.
Andover: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Onset: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.