City vs city
Columbia vs North Potomac, MD
Columbia currently scores 5 points higher overall than North Potomac, 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
Columbia: 35/100 · North Potomac: 30/100
Columbia is 5 points higher.
Flood
Columbia: 24/100 · North Potomac: 4/100
Columbia is 20 points higher.
Columbia: FEMA NFHL flood zones: 7 features intersect this tile.
North Potomac: FEMA NFHL flood zones: 1 features intersect this tile.
Wind
Columbia: 21/100 · North Potomac: 20/100
Columbia is 1 points higher.
Columbia: Wind exposure derived from ingested design wind / climatology tiles.
North Potomac: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Columbia: 39/100 · North Potomac: 37/100
Columbia is 2 points higher.
Columbia: Lightning exposure derived from ingested climatology tiles.
North Potomac: Lightning exposure derived from ingested climatology tiles.
Tornado
Columbia: 19/100 · North Potomac: 8/100
Columbia is 11 points higher.
Columbia: Tornado risk derived from NOAA SPC historical reports.
North Potomac: Tornado risk derived from NOAA SPC historical reports.
Hail
Columbia: 58/100 · North Potomac: 56/100
Columbia is 2 points higher.
Columbia: Hail risk derived from NOAA SPC historical reports.
North Potomac: Hail risk derived from NOAA SPC historical reports.
Storm surge
Columbia: Unavailable · North Potomac: Unavailable
A score difference cannot be calculated without both sources.
Columbia: Storm surge model is not available for this location yet.
North Potomac: Storm surge model is not available for this location yet.
Wildfire
Columbia: 40/100 · North Potomac: 41/100
North Potomac is 1 points higher.
Columbia: Wildfire exposure derived from ingested fire potential tiles.
North Potomac: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Columbia: 42/100 · North Potomac: 43/100
North Potomac is 1 points higher.
Columbia: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
North Potomac: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.