City vs city
Portsmouth vs West Stewartstown, NH
Portsmouth currently scores 27 points higher overall than West Stewartstown, 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 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 · West Stewartstown: 14/100
Portsmouth is 27 points higher.
Flood
Portsmouth: 73/100 · West Stewartstown: 27/100
Portsmouth is 46 points higher.
Portsmouth: FEMA NFHL flood zones: 12 features intersect this tile.
West Stewartstown: FEMA NFHL flood zones: 3 features intersect this tile.
Wind
Portsmouth: 23/100 · West Stewartstown: 15/100
Portsmouth is 8 points higher.
Portsmouth: Wind exposure derived from ingested design wind / climatology tiles.
West Stewartstown: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Portsmouth: 6/100 · West Stewartstown: 7/100
West Stewartstown is 1 points higher.
Portsmouth: Lightning exposure derived from ingested climatology tiles.
West Stewartstown: Lightning exposure derived from ingested climatology tiles.
Tornado
Portsmouth: 0/100 · West Stewartstown: 4/100
West Stewartstown is 4 points higher.
Portsmouth: Tornado risk derived from NOAA SPC historical reports.
West Stewartstown: Tornado risk derived from NOAA SPC historical reports.
Hail
Portsmouth: 22/100 · West Stewartstown: 4/100
Portsmouth is 18 points higher.
Portsmouth: Hail risk derived from NOAA SPC historical reports.
West Stewartstown: Hail risk derived from NOAA SPC historical reports.
Storm surge
Portsmouth: 98/100 · West Stewartstown: Unavailable
A score difference cannot be calculated without both sources.
Portsmouth: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
West Stewartstown: Storm surge model is not available for this location yet.
Wildfire
Portsmouth: 43/100 · West Stewartstown: 13/100
Portsmouth is 30 points higher.
Portsmouth: Wildfire exposure derived from ingested fire potential tiles.
West Stewartstown: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Portsmouth: 23/100 · West Stewartstown: 26/100
West Stewartstown is 3 points higher.
Portsmouth: Air quality signal derived from the latest EPA AirNow combined AQI grid.
West Stewartstown: Air quality signal derived from the latest EPA AirNow combined AQI grid.