St. Mary Parish, Louisiana: hazard risk
FEMA rates St. Mary Parish's overall risk Relatively Moderate (score 88.9 of 100, higher than 88% of rated U.S. counties); 3 of its 15 hazards are rated Relatively High or Very High, led by hurricane, coastal flooding, drought. Its storm record holds 281 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 |
|---|---|---|---|
| Hurricane | Relatively High | 97.3 | $39M |
| Coastal Flooding | Relatively High | 93.0 | $6.5M |
| Drought | Relatively High | 91.1 | $1.4M |
| Tornado | Relatively Moderate | 86.4 | $4.4M |
| Cold Wave | Relatively Moderate | 76.7 | $2.3M |
| Lightning | Relatively Moderate | 66.7 | $343K |
| Heat Wave | Relatively Low | 74.9 | $898K |
| Riverine Flooding | Relatively Low | 50.1 | $5.3M |
| Strong Wind | Relatively Low | 46.5 | $389K |
| Hail | Relatively Low | 42.8 | $155K |
| Winter Weather | Relatively Low | 35.6 | $29K |
| Ice Storm | Relatively Low | 32.5 | $29K |
| Earthquake | Very Low | 43.7 | $150K |
| Landslide | Very Low | 17.1 | $63 |
| Wildfire | Very Low | 15.0 | $4K |
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 | 88 | 0 | $13M | 54th of 64 | 2025th of 3,080 |
| Floods | 39 | 0 | $36M | 18th of 64 | 1189th of 3,080 |
| Hail | 39 | 0 | $281K | 52nd of 64 | 2477th of 3,080 |
| Rip currents and high surf | 27 | 0 | – | 3rd of 64 | 42nd of 2,080 |
| Hurricanes and tropical storms | 27 | 0 | $597M | 11th of 64 | 152nd of 1,849 |
| Tornadoes | 24 | 0 | $32M | 46th of 64 | 1065th of 3,080 |
| Lightning | 12 | 0 | $879K | 11th of 64 | 335th of 3,080 |
| Winter storms | 10 | 0 | $33K | 52nd of 64 | 2752nd of 3,077 |
| Heat | 4 | 0 | – | 50th of 64 | 1846th of 3,076 |
| Heavy rain | 4 | 0 | $20K | 10th of 64 | 1100th of 3,080 |
| Drought | 3 | 0 | $23M | 61st of 64 | 2183rd of 3,063 |
| High wind and dust storms | 2 | 0 | $129K | 34th of 64 | 2765th of 3,080 |
| Extreme cold | 1 | 0 | – | 54th of 64 | 2674th of 3,076 |
Source: NOAA NCEI Storm Events Database, 1950 to 2026-06-30; damage in 2025 dollars. Search the record at NCEI.
The full St. Mary Parish record: every hazard by year and month, the deadliest events and FEMA's declarations.