City vs city
Carrollton vs Portsmouth, VA
Portsmouth currently scores 3 points higher overall than Carrollton, with the largest gap 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 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
Carrollton: 39/100 · Portsmouth: 42/100
Portsmouth is 3 points higher.
Flood
Carrollton: 37/100 · Portsmouth: 44/100
Portsmouth is 7 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: 47/100 · Portsmouth: 45/100
Carrollton is 2 points higher.
Carrollton: Lightning exposure derived from ingested climatology tiles.
Portsmouth: Lightning exposure derived from ingested climatology tiles.
Tornado
Carrollton: 46/100 · Portsmouth: 19/100
Carrollton is 27 points higher.
Carrollton: Tornado risk derived from NOAA SPC historical reports.
Portsmouth: Tornado risk derived from NOAA SPC historical reports.
Hail
Carrollton: 29/100 · Portsmouth: 76/100
Portsmouth is 47 points higher.
Carrollton: Hail risk derived from NOAA SPC historical reports.
Portsmouth: Hail risk derived from NOAA SPC historical reports.
Storm surge
Carrollton: 94/100 · Portsmouth: 91/100
Carrollton is 3 points higher.
Carrollton: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Portsmouth: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Wildfire
Carrollton: 9/100 · Portsmouth: 10/100
Portsmouth is 1 points higher.
Carrollton: Wildfire exposure derived from ingested fire potential tiles.
Portsmouth: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Carrollton: 27/100 · Portsmouth: 25/100
Carrollton is 2 points higher.
Carrollton: 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.