City vs city
Gretna vs New Orleans, LA
Gretna currently scores 14 points higher overall than New Orleans, 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 is a current EPA AirNow signal; 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
Gretna: 61/100 · New Orleans: 47/100
Gretna is 14 points higher.
Flood
Gretna: 29/100 · New Orleans: 30/100
New Orleans is 1 points higher.
Gretna: FEMA NFHL flood zones: 31 features intersect this tile.
New Orleans: FEMA NFHL flood zones: 22 features intersect this tile.
Wind
Gretna: 50/100 · New Orleans: 49/100
Gretna is 1 points higher.
Gretna: Wind exposure derived from ingested design wind / climatology tiles.
New Orleans: Wind exposure derived from ingested design wind / climatology tiles.
Lightning
Gretna: 92/100 · New Orleans: 96/100
New Orleans is 4 points higher.
Gretna: Lightning exposure derived from ingested climatology tiles.
New Orleans: Lightning exposure derived from ingested climatology tiles.
Tornado
Gretna: 54/100 · New Orleans: 35/100
Gretna is 19 points higher.
Gretna: Tornado risk derived from NOAA SPC historical reports.
New Orleans: Tornado risk derived from NOAA SPC historical reports.
Hail
Gretna: 95/100 · New Orleans: 18/100
Gretna is 77 points higher.
Gretna: Hail risk derived from NOAA SPC historical reports.
New Orleans: Hail risk derived from NOAA SPC historical reports.
Storm surge
Gretna: 99/100 · New Orleans: 99/100
No gap.
Gretna: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
New Orleans: Storm surge exposure derived from NOAA SLOSH MOM (AGL) data.
Wildfire
Gretna: 38/100 · New Orleans: 24/100
Gretna is 14 points higher.
Gretna: Wildfire exposure derived from ingested fire potential tiles.
New Orleans: Wildfire exposure derived from ingested fire potential tiles.
Current air quality
Gretna: 31/100 · New Orleans: 23/100
Gretna is 8 points higher.
Gretna: Air quality signal derived from the latest EPA AirNow combined AQI grid.
New Orleans: Air quality signal derived from the latest EPA AirNow combined AQI grid.