City vs city
Columbia vs Deal Island, MD
Columbia and Deal Island are tied on overall score, with the biggest factor difference 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
Columbia: 35/100 · Deal Island: 35/100
No gap.
Flood
Columbia: 24/100 · Deal Island: 44/100
Deal Island is 20 points higher.
Columbia: FEMA NFHL flood zones: 7 features intersect this tile.
Deal Island: FEMA NFHL flood zones: 11 features intersect this tile.
Wind
Columbia: 21/100 · Deal Island: 25/100
Deal Island is 4 points higher.
Columbia: Wind exposure derived from ingested design wind / climatology tiles.
Deal Island: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Columbia: 39/100 · Deal Island: 27/100
Columbia is 12 points higher.
Columbia: Lightning exposure derived from ingested climatology tiles.
Deal Island: Lightning exposure derived from ingested climatology tiles.
Tornado
Columbia: 19/100 · Deal Island: 4/100
Columbia is 15 points higher.
Columbia: Tornado risk derived from NOAA SPC historical reports.
Deal Island: Tornado risk derived from NOAA SPC historical reports.
Hail
Columbia: 58/100 · Deal Island: 2/100
Columbia is 56 points higher.
Columbia: Hail risk derived from NOAA SPC historical reports.
Deal Island: Hail risk derived from NOAA SPC historical reports.
Storm surge
Columbia: Unavailable · Deal Island: 85/100
A score difference cannot be calculated without both sources.
Columbia: Storm surge model is not available for this location yet.
Deal Island: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Wildfire
Columbia: 40/100 · Deal Island: 59/100
Deal Island is 19 points higher.
Columbia: Wildfire exposure derived from ingested fire potential tiles.
Deal Island: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Columbia: 42/100 · Deal Island: 30/100
Columbia is 12 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.
Deal Island: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.