City vs city
Grottoes vs Roanoke, VA
Roanoke currently scores 9 points higher overall than Grottoes, 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 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
Grottoes: 30/100 · Roanoke: 39/100
Roanoke is 9 points higher.
Flood
Grottoes: 33/100 · Roanoke: 24/100
Grottoes is 9 points higher.
Grottoes: FEMA NFHL flood zones: 12 features intersect this tile.
Roanoke: FEMA NFHL flood zones: 9 features intersect this tile.
Wind
Grottoes: 18/100 · Roanoke: 17/100
Grottoes is 1 points higher.
Grottoes: Wind exposure derived from ingested design wind / climatology tiles.
Roanoke: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Grottoes: 24/100 · Roanoke: 30/100
Roanoke is 6 points higher.
Grottoes: Lightning exposure derived from ingested climatology tiles.
Roanoke: Lightning exposure derived from ingested climatology tiles.
Tornado
Grottoes: 19/100 · Roanoke: 19/100
No gap.
Grottoes: Tornado risk derived from NOAA SPC historical reports.
Roanoke: Tornado risk derived from NOAA SPC historical reports.
Hail
Grottoes: 38/100 · Roanoke: 100/100
Roanoke is 62 points higher.
Grottoes: Hail risk derived from NOAA SPC historical reports.
Roanoke: Hail risk derived from NOAA SPC historical reports.
Storm surge
Grottoes: Unavailable · Roanoke: Unavailable
A score difference cannot be calculated without both sources.
Grottoes: Storm surge model is not available for this location yet.
Roanoke: Storm surge model is not available for this location yet.
Wildfire
Grottoes: 39/100 · Roanoke: 51/100
Roanoke is 12 points higher.
Grottoes: Wildfire exposure derived from ingested fire potential tiles.
Roanoke: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Grottoes: 39/100 · Roanoke: 35/100
Grottoes is 4 points higher.
Grottoes: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Roanoke: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.