St. Charles Parish, Louisiana: hazard risk
FEMA rates St. Charles Parish's overall risk Relatively Moderate (score 85.1 of 100, higher than 85% of rated U.S. counties); 2 of its 15 hazards are rated Relatively High or Very High, led by coastal flooding, hurricane. Its storm record holds 365 events since 1950.
FEMA's rating for each hazard
These are FEMA's county-wide model ratings and this county's storm record. They are not an assessment of any property, address or building, and not insurance advice: a property's risk depends on its own elevation, construction and location.
FEMA gives each hazard its own rating, and a rating does not follow the score from one hazard to the next: a hazard with a higher score can carry a lower rating than another. The table sorts by FEMA's rating, then by score (0 to 100, the county against every other county for that hazard).
| Hazard | Risk rating | Score | Expected annual loss |
|---|---|---|---|
| Coastal Flooding | Very High | 95.4 | $13M |
| Hurricane | Relatively High | 96.0 | $29M |
| Tornado | Relatively Moderate | 77.2 | $3.5M |
| Lightning | Relatively Moderate | 67.1 | $455K |
| Heat Wave | Relatively Low | 78.5 | $1.4M |
| Cold Wave | Relatively Low | 58.8 | $1.4M |
| Riverine Flooding | Relatively Low | 54.0 | $7.6M |
| Drought | Relatively Low | 53.0 | $182K |
| Hail | Relatively Low | 46.4 | $232K |
| Winter Weather | Relatively Low | 31.0 | $32K |
| Strong Wind | Relatively Low | 20.2 | $187K |
| Earthquake | Very Low | 35.0 | $114K |
| Wildfire | Very Low | 18.5 | $7K |
| Ice Storm | Very Low | 14.5 | $9K |
| Landslide | Very Low | 11.7 | $37 |
Source: FEMA National Risk Index, December 2025 release. A model of future loss, not a count of past events. FEMA's National Risk Index map.
What the record holds
| Hazard | Records | Deaths | Damage | Rank in state | Rank in U.S. |
|---|---|---|---|---|---|
| Severe thunderstorm wind | 121 | 0 | $575K | 11th of 64 | 515th of 3,080 |
| Floods | 67 | 0 | $52M | 4th of 64 | 230th of 3,080 |
| Hail | 50 | 0 | $24K | 20th of 64 | 1113th of 3,080 |
| Hurricanes and tropical storms | 40 | 0 | $912M | 5th of 64 | 16th of 1,849 |
| Tornadoes | 27 | 1 | $3.2M | 8th of 64 | 84th of 3,080 |
| Heat | 25 | 0 | – | 23rd of 64 | 335th of 3,076 |
| Drought | 13 | 0 | $840K | 20th of 64 | 1015th of 3,063 |
| Winter storms | 5 | 0 | – | 46th of 64 | 2719th of 3,077 |
| Extreme cold | 4 | 0 | – | 8th of 64 | 1455th of 3,076 |
| High wind and dust storms | 3 | 0 | – | 7th of 64 | 2293rd of 3,080 |
| Lightning | 2 | 0 | $833K | 25th of 64 | 946th of 3,080 |
| Heavy rain | 1 | 0 | – | 19th of 64 | 1537th of 3,080 |
Source: NOAA NCEI Storm Events Database, 1950 to 2026-06-30; damage in 2025 dollars. Search the record at NCEI.
The full St. Charles Parish record: every hazard by year and month, the deadliest events and FEMA's declarations.