City vs city
Melvin Village vs Portsmouth, NH
Portsmouth currently scores 11 points higher overall than Melvin Village, 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
Melvin Village: 30/100 · Portsmouth: 41/100
Portsmouth is 11 points higher.
Flood
Melvin Village: 100/100 · Portsmouth: 73/100
Melvin Village is 27 points higher.
Melvin Village: FEMA NFHL flood zones: 5 features intersect this tile.
Portsmouth: FEMA NFHL flood zones: 12 features intersect this tile.
Wind
Melvin Village: 18/100 · Portsmouth: 23/100
Portsmouth is 5 points higher.
Melvin Village: Wind exposure derived from ingested design wind / climatology tiles.
Portsmouth: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Melvin Village: 14/100 · Portsmouth: 6/100
Melvin Village is 8 points higher.
Melvin Village: Lightning exposure derived from ingested climatology tiles.
Portsmouth: Lightning exposure derived from ingested climatology tiles.
Tornado
Melvin Village: 8/100 · Portsmouth: 0/100
Melvin Village is 8 points higher.
Melvin Village: Tornado risk derived from NOAA SPC historical reports.
Portsmouth: Tornado risk derived from NOAA SPC historical reports.
Hail
Melvin Village: 5/100 · Portsmouth: 22/100
Portsmouth is 17 points higher.
Melvin Village: Hail risk derived from NOAA SPC historical reports.
Portsmouth: Hail risk derived from NOAA SPC historical reports.
Storm surge
Melvin Village: Unavailable · Portsmouth: 98/100
A score difference cannot be calculated without both sources.
Melvin Village: Storm surge model is not available for this location yet.
Portsmouth: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Wildfire
Melvin Village: 44/100 · Portsmouth: 43/100
Melvin Village is 1 points higher.
Melvin Village: Wildfire exposure derived from ingested fire potential tiles.
Portsmouth: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Melvin Village: 20/100 · Portsmouth: 23/100
Portsmouth is 3 points higher.
Melvin Village: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Portsmouth: Air quality signal derived from the latest EPA AirNow combined AQI grid.