City vs city
Charlotte Hall vs Columbia, MD
Charlotte Hall currently scores 2 points higher overall than Columbia, 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
Charlotte Hall: 37/100 · Columbia: 35/100
Charlotte Hall is 2 points higher.
Flood
Charlotte Hall: 21/100 · Columbia: 24/100
Columbia is 3 points higher.
Charlotte Hall: FEMA NFHL flood zones: 4 features intersect this tile.
Columbia: FEMA NFHL flood zones: 7 features intersect this tile.
Wind
Charlotte Hall: 22/100 · Columbia: 21/100
Charlotte Hall is 1 points higher.
Charlotte Hall: Wind exposure derived from ingested design wind / climatology tiles.
Columbia: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Charlotte Hall: 42/100 · Columbia: 39/100
Charlotte Hall is 3 points higher.
Charlotte Hall: Lightning exposure derived from ingested climatology tiles.
Columbia: Lightning exposure derived from ingested climatology tiles.
Tornado
Charlotte Hall: 38/100 · Columbia: 19/100
Charlotte Hall is 19 points higher.
Charlotte Hall: Tornado risk derived from NOAA SPC historical reports.
Columbia: Tornado risk derived from NOAA SPC historical reports.
Hail
Charlotte Hall: 41/100 · Columbia: 58/100
Columbia is 17 points higher.
Charlotte Hall: Hail risk derived from NOAA SPC historical reports.
Columbia: Hail risk derived from NOAA SPC historical reports.
Storm surge
Charlotte Hall: Unavailable · Columbia: Unavailable
A score difference cannot be calculated without both sources.
Charlotte Hall: Storm surge model is not available for this location yet.
Columbia: Storm surge model is not available for this location yet.
Wildfire
Charlotte Hall: 49/100 · Columbia: 40/100
Charlotte Hall is 9 points higher.
Charlotte Hall: Wildfire exposure derived from ingested fire potential tiles.
Columbia: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Charlotte Hall: 44/100 · Columbia: 42/100
Charlotte Hall is 2 points higher.
Charlotte Hall: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
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.