City vs city
Green Knoll vs Somerville, NJ
Somerville currently scores 3 points higher overall than Green Knoll, with the largest gap in hail.
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
Green Knoll: 26/100 · Somerville: 29/100
Somerville is 3 points higher.
Flood
Green Knoll: 17/100 · Somerville: 22/100
Somerville is 5 points higher.
Green Knoll: FEMA NFHL flood zones: 7 features intersect this tile.
Somerville: FEMA NFHL flood zones: 7 features intersect this tile.
Wind
Green Knoll: 22/100 · Somerville: 22/100
No gap.
Green Knoll: Wind exposure derived from ingested design wind / climatology tiles.
Somerville: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Green Knoll: 20/100 · Somerville: 21/100
Somerville is 1 points higher.
Green Knoll: Lightning exposure derived from ingested climatology tiles.
Somerville: Lightning exposure derived from ingested climatology tiles.
Tornado
Green Knoll: 4/100 · Somerville: 8/100
Somerville is 4 points higher.
Green Knoll: Tornado risk derived from NOAA SPC historical reports.
Somerville: Tornado risk derived from NOAA SPC historical reports.
Hail
Green Knoll: 17/100 · Somerville: 36/100
Somerville is 19 points higher.
Green Knoll: Hail risk derived from NOAA SPC historical reports.
Somerville: Hail risk derived from NOAA SPC historical reports.
Storm surge
Green Knoll: Unavailable · Somerville: Unavailable
A score difference cannot be calculated without both sources.
Green Knoll: Storm surge model is not available for this location yet.
Somerville: Storm surge model is not available for this location yet.
Wildfire
Green Knoll: 62/100 · Somerville: 54/100
Green Knoll is 8 points higher.
Green Knoll: Wildfire exposure derived from ingested fire potential tiles.
Somerville: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Green Knoll: 38/100 · Somerville: 39/100
Somerville is 1 points higher.
Green Knoll: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Somerville: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.