City vs city
National Harbor vs Silver Spring, MD
National Harbor currently scores 5 points higher overall than Silver Spring, 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
National Harbor: 43/100 · Silver Spring: 38/100
National Harbor is 5 points higher.
Flood
National Harbor: 16/100 · Silver Spring: 0/100
National Harbor is 16 points higher.
National Harbor: FEMA NFHL flood zones: 5 features intersect this tile.
Silver Spring: FEMA NFHL flood zones: 0 features intersect this tile.
Wind
National Harbor: 21/100 · Silver Spring: 21/100
No gap.
National Harbor: Wind exposure derived from ingested design wind / climatology tiles.
Silver Spring: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
National Harbor: 40/100 · Silver Spring: 38/100
National Harbor is 2 points higher.
National Harbor: Lightning exposure derived from ingested climatology tiles.
Silver Spring: Lightning exposure derived from ingested climatology tiles.
Tornado
National Harbor: 31/100 · Silver Spring: 27/100
National Harbor is 4 points higher.
National Harbor: Tornado risk derived from NOAA SPC historical reports.
Silver Spring: Tornado risk derived from NOAA SPC historical reports.
Hail
National Harbor: 55/100 · Silver Spring: 100/100
Silver Spring is 45 points higher.
National Harbor: Hail risk derived from NOAA SPC historical reports.
Silver Spring: Hail risk derived from NOAA SPC historical reports.
Storm surge
National Harbor: 87/100 · Silver Spring: Unavailable
A score difference cannot be calculated without both sources.
National Harbor: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Silver Spring: Storm surge model is not available for this location yet.
Wildfire
National Harbor: 49/100 · Silver Spring: 37/100
National Harbor is 12 points higher.
National Harbor: Wildfire exposure derived from ingested fire potential tiles.
Silver Spring: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
National Harbor: 42/100 · Silver Spring: 45/100
Silver Spring is 3 points higher.
National Harbor: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Silver Spring: Air quality signal derived from the latest EPA AirNow combined AQI grid.