City vs city
Gallipolis vs Portsmouth, OH
Gallipolis currently scores 5 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
Gallipolis: 51/100 · Portsmouth: 46/100
Gallipolis is 5 points higher.
Flood
Gallipolis: 66/100 · Portsmouth: 41/100
Gallipolis is 25 points higher.
Gallipolis: FEMA NFHL flood zones: 8 features intersect this tile.
Portsmouth: FEMA NFHL flood zones: 6 features intersect this tile.
Wind
Gallipolis: 16/100 · Portsmouth: 15/100
Gallipolis is 1 points higher.
Gallipolis: Wind exposure derived from ingested design wind / climatology tiles.
Portsmouth: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Gallipolis: 38/100 · Portsmouth: 34/100
Gallipolis is 4 points higher.
Gallipolis: Lightning exposure derived from ingested climatology tiles.
Portsmouth: Lightning exposure derived from ingested climatology tiles.
Tornado
Gallipolis: 0/100 · Portsmouth: 35/100
Portsmouth is 35 points higher.
Gallipolis: Tornado risk derived from NOAA SPC historical reports.
Portsmouth: Tornado risk derived from NOAA SPC historical reports.
Hail
Gallipolis: 100/100 · Portsmouth: 100/100
No gap.
Gallipolis: Hail risk derived from NOAA SPC historical reports.
Portsmouth: Hail risk derived from NOAA SPC historical reports.
Storm surge
Gallipolis: Unavailable · Portsmouth: Unavailable
A score difference cannot be calculated without both sources.
Gallipolis: Storm surge model is not available for this location yet.
Portsmouth: Storm surge model is not available for this location yet.
Wildfire
Gallipolis: 45/100 · Portsmouth: 58/100
Portsmouth is 13 points higher.
Gallipolis: Wildfire exposure derived from ingested fire potential tiles.
Portsmouth: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Gallipolis: 40/100 · Portsmouth: 41/100
Portsmouth is 1 points higher.
Gallipolis: 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.