City vs city
Carrollton vs Portsmouth, VA
Carrollton and Portsmouth are tied on overall score, with the biggest factor difference in hail.
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
Carrollton: 42/100 · Portsmouth: 42/100
No gap.
Flood
Carrollton: 36/100 · Portsmouth: 44/100
Portsmouth is 8 points higher.
Carrollton: FEMA NFHL flood zones: 13 features intersect this tile.
Portsmouth: FEMA NFHL flood zones: 27 features intersect this tile.
Wind
Carrollton: 25/100 · Portsmouth: 26/100
Portsmouth is 1 points higher.
Carrollton: Wind exposure derived from ingested design wind / climatology tiles.
Portsmouth: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Carrollton: 48/100 · Portsmouth: 45/100
Carrollton is 3 points higher.
Carrollton: Lightning exposure derived from ingested climatology tiles.
Portsmouth: Lightning exposure derived from ingested climatology tiles.
Tornado
Carrollton: 0/100 · Portsmouth: 19/100
Portsmouth is 19 points higher.
Carrollton: Tornado risk derived from NOAA SPC historical reports.
Portsmouth: Tornado risk derived from NOAA SPC historical reports.
Hail
Carrollton: 9/100 · Portsmouth: 76/100
Portsmouth is 67 points higher.
Carrollton: Hail risk derived from NOAA SPC historical reports.
Portsmouth: Hail risk derived from NOAA SPC historical reports.
Storm surge
Carrollton: 91/100 · Portsmouth: 91/100
No gap.
Carrollton: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Portsmouth: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Wildfire
Carrollton: 56/100 · Portsmouth: 10/100
Carrollton is 46 points higher.
Carrollton: Wildfire exposure derived from ingested fire potential tiles.
Portsmouth: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Carrollton: 27/100 · Portsmouth: 25/100
Carrollton is 2 points higher.
Carrollton: 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.