City vs city
Rockwall vs Royse City, TX
Rockwall currently scores 15 points higher overall than Royse City, 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
Rockwall: 50/100 · Royse City: 35/100
Rockwall is 15 points higher.
Flood
Rockwall: 46/100 · Royse City: 34/100
Rockwall is 12 points higher.
Rockwall: FEMA NFHL flood zones: 9 features intersect this tile.
Royse City: FEMA NFHL flood zones: 5 features intersect this tile.
Wind
Rockwall: 14/100 · Royse City: 14/100
No gap.
Rockwall: Wind exposure derived from ingested design wind / climatology tiles.
Royse City: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Rockwall: 64/100 · Royse City: 66/100
Royse City is 2 points higher.
Rockwall: Lightning exposure derived from ingested climatology tiles.
Royse City: Lightning exposure derived from ingested climatology tiles.
Tornado
Rockwall: 46/100 · Royse City: 4/100
Rockwall is 42 points higher.
Rockwall: Tornado risk derived from NOAA SPC historical reports.
Royse City: Tornado risk derived from NOAA SPC historical reports.
Hail
Rockwall: 100/100 · Royse City: 40/100
Rockwall is 60 points higher.
Rockwall: Hail risk derived from NOAA SPC historical reports.
Royse City: Hail risk derived from NOAA SPC historical reports.
Storm surge
Rockwall: Unavailable · Royse City: Unavailable
A score difference cannot be calculated without both sources.
Rockwall: Storm surge model is not available for this location yet.
Royse City: Storm surge model is not available for this location yet.
Wildfire
Rockwall: 55/100 · Royse City: 61/100
Royse City is 6 points higher.
Rockwall: Wildfire exposure derived from ingested fire potential tiles.
Royse City: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Rockwall: 28/100 · Royse City: 27/100
Rockwall is 1 points higher.
Rockwall: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Royse City: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.