City vs city
Gilliam vs Vivian, LA
Gilliam currently scores 6 points higher overall than Vivian, 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 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
Gilliam: 50/100 · Vivian: 44/100
Gilliam is 6 points higher.
Flood
Gilliam: 25/100 · Vivian: 16/100
Gilliam is 9 points higher.
Gilliam: FEMA NFHL flood zones: 16 features intersect this tile.
Vivian: FEMA NFHL flood zones: 6 features intersect this tile.
Wind
Gilliam: 14/100 · Vivian: 14/100
No gap.
Gilliam: Wind exposure derived from ingested design wind / climatology tiles.
Vivian: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Gilliam: 70/100 · Vivian: 69/100
Gilliam is 1 points higher.
Gilliam: Lightning exposure derived from ingested climatology tiles.
Vivian: Lightning exposure derived from ingested climatology tiles.
Tornado
Gilliam: 50/100 · Vivian: 15/100
Gilliam is 35 points higher.
Gilliam: Tornado risk derived from NOAA SPC historical reports.
Vivian: Tornado risk derived from NOAA SPC historical reports.
Hail
Gilliam: 100/100 · Vivian: 100/100
No gap.
Gilliam: Hail risk derived from NOAA SPC historical reports.
Vivian: Hail risk derived from NOAA SPC historical reports.
Storm surge
Gilliam: Unavailable · Vivian: Unavailable
A score difference cannot be calculated without both sources.
Gilliam: Storm surge model is not available for this location yet.
Vivian: Storm surge model is not available for this location yet.
Wildfire
Gilliam: 61/100 · Vivian: 65/100
Vivian is 4 points higher.
Gilliam: Wildfire exposure derived from ingested fire potential tiles.
Vivian: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Gilliam: 27/100 · Vivian: 27/100
No gap.
Gilliam: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
Vivian: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.