City vs city
Frederick vs Riverdale Park, MD
Riverdale Park currently scores 4 points higher overall than Frederick, 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
Frederick: 35/100 · Riverdale Park: 39/100
Riverdale Park is 4 points higher.
Flood
Frederick: 20/100 · Riverdale Park: 27/100
Riverdale Park is 7 points higher.
Frederick: FEMA NFHL flood zones: 3 features intersect this tile.
Riverdale Park: FEMA NFHL flood zones: 10 features intersect this tile.
Wind
Frederick: 20/100 · Riverdale Park: 21/100
Riverdale Park is 1 points higher.
Frederick: Wind exposure derived from ingested design wind / climatology tiles.
Riverdale Park: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Frederick: 26/100 · Riverdale Park: 39/100
Riverdale Park is 13 points higher.
Frederick: Lightning exposure derived from ingested climatology tiles.
Riverdale Park: Lightning exposure derived from ingested climatology tiles.
Tornado
Frederick: 15/100 · Riverdale Park: 38/100
Riverdale Park is 23 points higher.
Frederick: Tornado risk derived from NOAA SPC historical reports.
Riverdale Park: Tornado risk derived from NOAA SPC historical reports.
Hail
Frederick: 74/100 · Riverdale Park: 63/100
Frederick is 11 points higher.
Frederick: Hail risk derived from NOAA SPC historical reports.
Riverdale Park: Hail risk derived from NOAA SPC historical reports.
Storm surge
Frederick: Unavailable · Riverdale Park: Unavailable
A score difference cannot be calculated without both sources.
Frederick: Storm surge model is not available for this location yet.
Riverdale Park: Storm surge model is not available for this location yet.
Wildfire
Frederick: 47/100 · Riverdale Park: 38/100
Frederick is 9 points higher.
Frederick: Wildfire exposure derived from ingested fire potential tiles.
Riverdale Park: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Frederick: 42/100 · Riverdale Park: 44/100
Riverdale Park is 2 points higher.
Frederick: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Riverdale Park: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.