City vs city
Norfolk vs Portsmouth, VA
Norfolk currently scores 8 points higher overall than Portsmouth, 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 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
Norfolk: 50/100 · Portsmouth: 42/100
Norfolk is 8 points higher.
Flood
Norfolk: 46/100 · Portsmouth: 44/100
Norfolk is 2 points higher.
Norfolk: FEMA NFHL flood zones: 25 features intersect this tile.
Portsmouth: FEMA NFHL flood zones: 27 features intersect this tile.
Wind
Norfolk: 27/100 · Portsmouth: 26/100
Norfolk is 1 points higher.
Norfolk: Wind exposure derived from ingested design wind / climatology tiles.
Portsmouth: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Norfolk: 45/100 · Portsmouth: 45/100
No gap.
Norfolk: Lightning exposure derived from ingested climatology tiles.
Portsmouth: Lightning exposure derived from ingested climatology tiles.
Tornado
Norfolk: 46/100 · Portsmouth: 19/100
Norfolk is 27 points higher.
Norfolk: Tornado risk derived from NOAA SPC historical reports.
Portsmouth: Tornado risk derived from NOAA SPC historical reports.
Hail
Norfolk: 100/100 · Portsmouth: 76/100
Norfolk is 24 points higher.
Norfolk: Hail risk derived from NOAA SPC historical reports.
Portsmouth: Hail risk derived from NOAA SPC historical reports.
Storm surge
Norfolk: 77/100 · Portsmouth: 91/100
Portsmouth is 14 points higher.
Norfolk: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Portsmouth: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Wildfire
Norfolk: 34/100 · Portsmouth: 10/100
Norfolk is 24 points higher.
Norfolk: Wildfire exposure derived from ingested fire potential tiles.
Portsmouth: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Norfolk: 27/100 · Portsmouth: 25/100
Norfolk is 2 points higher.
Norfolk: 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.