City vs city
Big Rock vs Marion, VA
Big Rock currently scores 4 points higher overall than Marion, with the largest gap in wildfire.
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
Big Rock: 29/100 · Marion: 25/100
Big Rock is 4 points higher.
Flood
Big Rock: 22/100 · Marion: 23/100
Marion is 1 points higher.
Big Rock: FEMA NFHL flood zones: 2 features intersect this tile.
Marion: FEMA NFHL flood zones: 3 features intersect this tile.
Wind
Big Rock: 15/100 · Marion: 16/100
Marion is 1 points higher.
Big Rock: Wind exposure derived from ingested design wind / climatology tiles.
Marion: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Big Rock: 32/100 · Marion: 28/100
Big Rock is 4 points higher.
Big Rock: Lightning exposure derived from ingested climatology tiles.
Marion: Lightning exposure derived from ingested climatology tiles.
Tornado
Big Rock: 0/100 · Marion: 0/100
No gap.
Big Rock: Tornado risk derived from NOAA SPC historical reports.
Marion: Tornado risk derived from NOAA SPC historical reports.
Hail
Big Rock: 7/100 · Marion: 12/100
Marion is 5 points higher.
Big Rock: Hail risk derived from NOAA SPC historical reports.
Marion: Hail risk derived from NOAA SPC historical reports.
Storm surge
Big Rock: Unavailable · Marion: Unavailable
A score difference cannot be calculated without both sources.
Big Rock: Storm surge model is not available for this location yet.
Marion: Storm surge model is not available for this location yet.
Wildfire
Big Rock: 65/100 · Marion: 39/100
Big Rock is 26 points higher.
Big Rock: Wildfire exposure derived from ingested fire potential tiles.
Marion: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Big Rock: 31/100 · Marion: 32/100
Marion is 1 points higher.
Big Rock: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Marion: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.