City vs city
Frederick vs National Harbor, MD
National Harbor currently scores 8 points higher overall than Frederick, 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 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
Frederick: 35/100 · National Harbor: 43/100
National Harbor is 8 points higher.
Flood
Frederick: 20/100 · National Harbor: 16/100
Frederick is 4 points higher.
Frederick: FEMA NFHL flood zones: 3 features intersect this tile.
National Harbor: FEMA NFHL flood zones: 5 features intersect this tile.
Wind
Frederick: 20/100 · National Harbor: 21/100
National Harbor is 1 points higher.
Frederick: Wind exposure derived from ingested design wind / climatology tiles.
National Harbor: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Frederick: 26/100 · National Harbor: 40/100
National Harbor is 14 points higher.
Frederick: Lightning exposure derived from ingested climatology tiles.
National Harbor: Lightning exposure derived from ingested climatology tiles.
Tornado
Frederick: 15/100 · National Harbor: 31/100
National Harbor is 16 points higher.
Frederick: Tornado risk derived from NOAA SPC historical reports.
National Harbor: Tornado risk derived from NOAA SPC historical reports.
Hail
Frederick: 74/100 · National Harbor: 55/100
Frederick is 19 points higher.
Frederick: Hail risk derived from NOAA SPC historical reports.
National Harbor: Hail risk derived from NOAA SPC historical reports.
Storm surge
Frederick: Unavailable · National Harbor: 87/100
A score difference cannot be calculated without both sources.
Frederick: Storm surge model is not available for this location yet.
National Harbor: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Wildfire
Frederick: 47/100 · National Harbor: 49/100
National Harbor is 2 points higher.
Frederick: Wildfire exposure derived from ingested fire potential tiles.
National Harbor: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Frederick: 42/100 · National Harbor: 42/100
No gap.
Frederick: Air quality signal derived from the latest EPA AirNow combined AQI grid.
National Harbor: Air quality signal derived from the latest EPA AirNow combined AQI grid.