St. Martin Parish, Louisiana: hazard risk
FEMA rates St. Martin Parish's overall risk Relatively Moderate (score 87.3 of 100, higher than 87% of rated U.S. counties); 5 of its 15 hazards are rated Relatively High or Very High, led by hurricane, drought, cold wave. Its storm record holds 239 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 | 96.1 | $21M |
| Drought | Relatively High | 92.7 | $1.4M |
| Cold Wave | Relatively High | 90.7 | $5.4M |
| Lightning | Relatively High | 88.0 | $753K |
| Coastal Flooding | Relatively High | 87.0 | $3.2M |
| Tornado | Relatively Moderate | 89.5 | $4.9M |
| Ice Storm | Relatively Moderate | 70.2 | $157K |
| Heat Wave | Relatively Low | 78.7 | $995K |
| Riverine Flooding | Relatively Low | 69.5 | $9.0M |
| Winter Weather | Relatively Low | 44.0 | $37K |
| Strong Wind | Relatively Low | 38.9 | $283K |
| Earthquake | Very Low | 43.8 | $136K |
| Landslide | Very Low | 25.5 | $141 |
| Wildfire | Very Low | 25.0 | $8K |
| Hail | Very Low | 20.6 | $52K |
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 | 85 | 1 | $1.1M | 59th of 64 | 2302nd of 3,080 |
| Floods | 39 | 0 | $293M | 28th of 64 | 1575th of 3,080 |
| Hail | 39 | 0 | $20K | 55th of 64 | 2566th of 3,080 |
| Tornadoes | 25 | 3 | $24M | 61st of 64 | 1477th of 3,080 |
| Winter storms | 20 | 0 | $13K | 41st of 64 | 2680th of 3,077 |
| Hurricanes and tropical storms | 16 | 2 | $268M | 28th of 64 | 366th of 1,849 |
| Drought | 6 | 0 | $19M | 57th of 64 | 2130th of 3,063 |
| Heat | 4 | 0 | – | 55th of 64 | 1972nd of 3,076 |
| Heavy rain | 2 | 0 | – | 24th of 64 | 1715th of 3,080 |
| Lightning | 2 | 0 | $63K | 48th of 64 | 1682nd of 3,080 |
| Extreme cold | 1 | 0 | – | 58th of 64 | 2724th 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. Martin Parish record: every hazard by year and month, the deadliest events and FEMA's declarations.