City vs city
Grand Isle vs New Orleans, LA
New Orleans currently scores 11 points higher overall than Grand Isle, with the largest gap in lightning.
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
Grand Isle: 36/100 · New Orleans: 47/100
New Orleans is 11 points higher.
Flood
Grand Isle: 25/100 · New Orleans: 30/100
New Orleans is 5 points higher.
Grand Isle: FEMA NFHL flood zones: 7 features intersect this tile.
New Orleans: FEMA NFHL flood zones: 22 features intersect this tile.
Wind
Grand Isle: 66/100 · New Orleans: 49/100
Grand Isle is 17 points higher.
Grand Isle: Wind exposure derived from ingested design wind / climatology tiles.
New Orleans: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Grand Isle: 61/100 · New Orleans: 96/100
New Orleans is 35 points higher.
Grand Isle: Lightning exposure derived from ingested climatology tiles.
New Orleans: Lightning exposure derived from ingested climatology tiles.
Tornado
Grand Isle: 12/100 · New Orleans: 35/100
New Orleans is 23 points higher.
Grand Isle: Tornado risk derived from NOAA SPC historical reports.
New Orleans: Tornado risk derived from NOAA SPC historical reports.
Hail
Grand Isle: 7/100 · New Orleans: 18/100
New Orleans is 11 points higher.
Grand Isle: Hail risk derived from NOAA SPC historical reports.
New Orleans: Hail risk derived from NOAA SPC historical reports.
Storm surge
Grand Isle: 94/100 · New Orleans: 99/100
New Orleans is 5 points higher.
Grand Isle: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
New Orleans: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Wildfire
Grand Isle: 3/100 · New Orleans: 24/100
New Orleans is 21 points higher.
Grand Isle: Wildfire exposure derived from ingested fire potential tiles.
New Orleans: Wildfire exposure derived from ingested fire potential tiles.
Ingested air quality
Grand Isle: 22/100 · New Orleans: 23/100
New Orleans is 1 points higher.
Grand Isle: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.
New Orleans: Air quality score derived from the latest ingested EPA AirNow AQI grid; may not reflect current conditions. See methodology for the recorded ingest date.