City vs city
Milford vs Portsmouth, NH
Portsmouth currently scores 7 points higher overall than Milford, 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 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
Milford: 34/100 · Portsmouth: 41/100
Portsmouth is 7 points higher.
Flood
Milford: 97/100 · Portsmouth: 73/100
Milford is 24 points higher.
Milford: FEMA NFHL flood zones: 18 features intersect this tile.
Portsmouth: FEMA NFHL flood zones: 12 features intersect this tile.
Wind
Milford: 22/100 · Portsmouth: 23/100
Portsmouth is 1 points higher.
Milford: Wind exposure derived from ingested design wind / climatology tiles.
Portsmouth: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Milford: 7/100 · Portsmouth: 6/100
Milford is 1 points higher.
Milford: Lightning exposure derived from ingested climatology tiles.
Portsmouth: Lightning exposure derived from ingested climatology tiles.
Tornado
Milford: 8/100 · Portsmouth: 0/100
Milford is 8 points higher.
Milford: Tornado risk derived from NOAA SPC historical reports.
Portsmouth: Tornado risk derived from NOAA SPC historical reports.
Hail
Milford: 27/100 · Portsmouth: 22/100
Milford is 5 points higher.
Milford: Hail risk derived from NOAA SPC historical reports.
Portsmouth: Hail risk derived from NOAA SPC historical reports.
Storm surge
Milford: Unavailable · Portsmouth: 98/100
A score difference cannot be calculated without both sources.
Milford: Storm surge model is not available for this location yet.
Portsmouth: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Wildfire
Milford: 53/100 · Portsmouth: 43/100
Milford is 10 points higher.
Milford: Wildfire exposure derived from ingested fire potential tiles.
Portsmouth: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Milford: 24/100 · Portsmouth: 23/100
Milford is 1 points higher.
Milford: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Portsmouth: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.