City vs city
Herndon vs Norfolk, VA
Norfolk currently scores 13 points higher overall than Herndon, 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
Herndon: 37/100 · Norfolk: 50/100
Norfolk is 13 points higher.
Flood
Herndon: 24/100 · Norfolk: 46/100
Norfolk is 22 points higher.
Herndon: FEMA NFHL flood zones: 4 features intersect this tile.
Norfolk: FEMA NFHL flood zones: 25 features intersect this tile.
Wind
Herndon: 20/100 · Norfolk: 27/100
Norfolk is 7 points higher.
Herndon: Wind exposure derived from ingested design wind / climatology tiles.
Norfolk: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Herndon: 38/100 · Norfolk: 45/100
Norfolk is 7 points higher.
Herndon: Lightning exposure derived from ingested climatology tiles.
Norfolk: Lightning exposure derived from ingested climatology tiles.
Tornado
Herndon: 12/100 · Norfolk: 46/100
Norfolk is 34 points higher.
Herndon: Tornado risk derived from NOAA SPC historical reports.
Norfolk: Tornado risk derived from NOAA SPC historical reports.
Hail
Herndon: 85/100 · Norfolk: 100/100
Norfolk is 15 points higher.
Herndon: Hail risk derived from NOAA SPC historical reports.
Norfolk: Hail risk derived from NOAA SPC historical reports.
Storm surge
Herndon: Unavailable · Norfolk: 77/100
A score difference cannot be calculated without both sources.
Herndon: Storm surge model is not available for this location yet.
Norfolk: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Wildfire
Herndon: 41/100 · Norfolk: 34/100
Herndon is 7 points higher.
Herndon: Wildfire exposure derived from ingested fire potential tiles.
Norfolk: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Herndon: 41/100 · Norfolk: 27/100
Herndon is 14 points higher.
Herndon: Air quality signal derived from the latest EPA AirNow combined AQI grid.
Norfolk: Air quality signal derived from the latest EPA AirNow combined AQI grid.