City vs city
Portsmouth vs South Hooksett, NH
Portsmouth currently scores 10 points higher overall than South Hooksett, 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 is a current EPA AirNow signal; 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
Portsmouth: 41/100 · South Hooksett: 31/100
Portsmouth is 10 points higher.
Flood
Portsmouth: 73/100 · South Hooksett: 74/100
South Hooksett is 1 points higher.
Portsmouth: FEMA NFHL flood zones: 12 features intersect this tile.
South Hooksett: FEMA NFHL flood zones: 13 features intersect this tile.
Wind
Portsmouth: 23/100 · South Hooksett: 21/100
Portsmouth is 2 points higher.
Portsmouth: Wind exposure derived from ingested design wind / climatology tiles.
South Hooksett: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Portsmouth: 6/100 · South Hooksett: 8/100
South Hooksett is 2 points higher.
Portsmouth: Lightning exposure derived from ingested climatology tiles.
South Hooksett: Lightning exposure derived from ingested climatology tiles.
Tornado
Portsmouth: 0/100 · South Hooksett: 31/100
South Hooksett is 31 points higher.
Portsmouth: Tornado risk derived from NOAA SPC historical reports.
South Hooksett: Tornado risk derived from NOAA SPC historical reports.
Hail
Portsmouth: 22/100 · South Hooksett: 18/100
Portsmouth is 4 points higher.
Portsmouth: Hail risk derived from NOAA SPC historical reports.
South Hooksett: Hail risk derived from NOAA SPC historical reports.
Storm surge
Portsmouth: 98/100 · South Hooksett: Unavailable
A score difference cannot be calculated without both sources.
Portsmouth: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
South Hooksett: Storm surge model is not available for this location yet.
Wildfire
Portsmouth: 43/100 · South Hooksett: 46/100
South Hooksett is 3 points higher.
Portsmouth: Wildfire exposure derived from ingested fire potential tiles.
South Hooksett: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Portsmouth: 23/100 · South Hooksett: 20/100
Portsmouth is 3 points higher.
Portsmouth: Air quality signal derived from the latest EPA AirNow combined AQI grid.
South Hooksett: Air quality signal derived from the latest EPA AirNow combined AQI grid.