City vs city
Antietam vs Columbia, MD
Columbia currently scores 4 points higher overall than Antietam, 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
Antietam: 31/100 · Columbia: 35/100
Columbia is 4 points higher.
Flood
Antietam: 12/100 · Columbia: 24/100
Columbia is 12 points higher.
Antietam: FEMA NFHL flood zones: 1 features intersect this tile.
Columbia: FEMA NFHL flood zones: 7 features intersect this tile.
Wind
Antietam: 20/100 · Columbia: 21/100
Columbia is 1 points higher.
Antietam: Wind exposure derived from ingested design wind / climatology tiles.
Columbia: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Antietam: 23/100 · Columbia: 39/100
Columbia is 16 points higher.
Antietam: Lightning exposure derived from ingested climatology tiles.
Columbia: Lightning exposure derived from ingested climatology tiles.
Tornado
Antietam: 0/100 · Columbia: 19/100
Columbia is 19 points higher.
Antietam: Tornado risk derived from NOAA SPC historical reports.
Columbia: Tornado risk derived from NOAA SPC historical reports.
Hail
Antietam: 30/100 · Columbia: 58/100
Columbia is 28 points higher.
Antietam: Hail risk derived from NOAA SPC historical reports.
Columbia: Hail risk derived from NOAA SPC historical reports.
Storm surge
Antietam: Unavailable · Columbia: Unavailable
A score difference cannot be calculated without both sources.
Antietam: Storm surge model is not available for this location yet.
Columbia: Storm surge model is not available for this location yet.
Wildfire
Antietam: 57/100 · Columbia: 40/100
Antietam is 17 points higher.
Antietam: Wildfire exposure derived from ingested fire potential tiles.
Columbia: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Antietam: 42/100 · Columbia: 42/100
No gap.
Antietam: 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.