City vs city
Columbia vs East Riverdale, MD
East Riverdale currently scores 6 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 is a current EPA AirNow signal; 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: 33/100 · East Riverdale: 39/100
East Riverdale is 6 points higher.
Flood
Columbia: 22/100 · East Riverdale: 27/100
East Riverdale is 5 points higher.
Columbia: FEMA NFHL flood zones: 4 features intersect this tile.
East Riverdale: FEMA NFHL flood zones: 10 features intersect this tile.
Wind
Columbia: 21/100 · East Riverdale: 21/100
No gap.
Columbia: Wind exposure derived from ingested design wind / climatology tiles.
East Riverdale: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Columbia: 38/100 · East Riverdale: 39/100
East Riverdale is 1 points higher.
Columbia: Lightning exposure derived from ingested climatology tiles.
East Riverdale: Lightning exposure derived from ingested climatology tiles.
Tornado
Columbia: 15/100 · East Riverdale: 38/100
East Riverdale is 23 points higher.
Columbia: Tornado risk derived from NOAA SPC historical reports.
East Riverdale: Tornado risk derived from NOAA SPC historical reports.
Hail
Columbia: 58/100 · East Riverdale: 63/100
East Riverdale is 5 points higher.
Columbia: Hail risk derived from NOAA SPC historical reports.
East Riverdale: Hail risk derived from NOAA SPC historical reports.
Storm surge
Columbia: Unavailable · East Riverdale: Unavailable
A score difference cannot be calculated without both sources.
Columbia: Storm surge model is not available for this location yet.
East Riverdale: Storm surge model is not available for this location yet.
Wildfire
Columbia: 38/100 · East Riverdale: 38/100
No gap.
Columbia: Wildfire exposure derived from ingested fire potential tiles.
East Riverdale: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Columbia: 42/100 · East Riverdale: 44/100
East Riverdale is 2 points higher.
Columbia: Air quality signal derived from the latest EPA AirNow combined AQI grid.
East Riverdale: Air quality signal derived from the latest EPA AirNow combined AQI grid.