City vs city
Difficult Run vs Reston, VA
Difficult Run and Reston are tied on overall score, with the biggest factor difference in flood.
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
Difficult Run: 37/100 · Reston: 37/100
No gap.
Flood
Difficult Run: 24/100 · Reston: 24/100
No gap.
Difficult Run: FEMA NFHL flood zones: 4 features intersect this tile.
Reston: FEMA NFHL flood zones: 4 features intersect this tile.
Wind
Difficult Run: 20/100 · Reston: 20/100
No gap.
Difficult Run: Wind exposure derived from ingested design wind / climatology tiles.
Reston: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Difficult Run: 38/100 · Reston: 38/100
No gap.
Difficult Run: Lightning exposure derived from ingested climatology tiles.
Reston: Lightning exposure derived from ingested climatology tiles.
Tornado
Difficult Run: 12/100 · Reston: 12/100
No gap.
Difficult Run: Tornado risk derived from NOAA SPC historical reports.
Reston: Tornado risk derived from NOAA SPC historical reports.
Hail
Difficult Run: 85/100 · Reston: 85/100
No gap.
Difficult Run: Hail risk derived from NOAA SPC historical reports.
Reston: Hail risk derived from NOAA SPC historical reports.
Storm surge
Difficult Run: Unavailable · Reston: Unavailable
A score difference cannot be calculated without both sources.
Difficult Run: Storm surge model is not available for this location yet.
Reston: Storm surge model is not available for this location yet.
Wildfire
Difficult Run: 41/100 · Reston: 41/100
No gap.
Difficult Run: Wildfire exposure derived from ingested fire potential tiles.
Reston: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Difficult Run: 41/100 · Reston: 41/100
No gap.
Difficult Run: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Reston: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.