City vs city
Allen vs Columbia, MD
Columbia currently scores 8 points higher overall than Allen, 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
Allen: 27/100 · Columbia: 35/100
Columbia is 8 points higher.
Flood
Allen: 22/100 · Columbia: 24/100
Columbia is 2 points higher.
Allen: FEMA NFHL flood zones: 5 features intersect this tile.
Columbia: FEMA NFHL flood zones: 7 features intersect this tile.
Wind
Allen: 27/100 · Columbia: 21/100
Allen is 6 points higher.
Allen: Wind exposure derived from ingested design wind / climatology tiles.
Columbia: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Allen: 23/100 · Columbia: 39/100
Columbia is 16 points higher.
Allen: Lightning exposure derived from ingested climatology tiles.
Columbia: Lightning exposure derived from ingested climatology tiles.
Tornado
Allen: 0/100 · Columbia: 19/100
Columbia is 19 points higher.
Allen: Tornado risk derived from NOAA SPC historical reports.
Columbia: Tornado risk derived from NOAA SPC historical reports.
Hail
Allen: 32/100 · Columbia: 58/100
Columbia is 26 points higher.
Allen: Hail risk derived from NOAA SPC historical reports.
Columbia: Hail risk derived from NOAA SPC historical reports.
Storm surge
Allen: 2/100 · Columbia: Unavailable
A score difference cannot be calculated without both sources.
Allen: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Columbia: Storm surge model is not available for this location yet.
Wildfire
Allen: 52/100 · Columbia: 40/100
Allen is 12 points higher.
Allen: Wildfire exposure derived from ingested fire potential tiles.
Columbia: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Allen: 28/100 · Columbia: 42/100
Columbia is 14 points higher.
Allen: 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.