Harrison County, Mississippi: hazard risk
FEMA rates Harrison County's overall risk Relatively High (score 95.6 of 100, higher than 95% of rated U.S. counties); 5 of its 15 hazards are rated Relatively High or Very High, led by hurricane, lightning, tornado. Its storm record holds 697 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 | Very High | 98.5 | $87M |
| Lightning | Very High | 97.1 | $2.1M |
| Tornado | Relatively High | 96.0 | $11M |
| Coastal Flooding | Relatively High | 91.6 | $5.8M |
| Strong Wind | Relatively High | 85.4 | $1.3M |
| Heat Wave | Relatively Moderate | 94.8 | $4.8M |
| Wildfire | Relatively Moderate | 94.5 | $2.5M |
| Riverine Flooding | Relatively Moderate | 90.5 | $33M |
| Cold Wave | Relatively Moderate | 87.7 | $4.8M |
| Hail | Relatively Moderate | 87.5 | $1.2M |
| Ice Storm | Relatively Moderate | 75.0 | $233K |
| Winter Weather | Relatively Moderate | 74.4 | $130K |
| Earthquake | Relatively Low | 70.5 | $662K |
| Drought | Relatively Low | 58.8 | $212K |
| Landslide | Very Low | 33.2 | $317 |
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 | 235 | 1 | $1.4M | 34th of 82 | 700th of 3,080 |
| Floods | 99 | 1 | $4.7M | 10th of 82 | 634th of 3,080 |
| Hail | 96 | 0 | – | 48th of 82 | 1382nd of 3,080 |
| Tornadoes | 91 | 6 | $345M | 3rd of 82 | 26th of 3,080 |
| Hurricanes and tropical storms | 51 | 100 | $13.4B | 2nd of 82 | 64th of 1,849 |
| Heat | 45 | 2 | – | 26th of 82 | 609th of 3,076 |
| Lightning | 19 | 2 | $536K | 2nd of 82 | 210th of 3,080 |
| Drought | 15 | 0 | – | 73rd of 82 | 1845th of 3,063 |
| Heavy rain | 9 | 0 | – | 1st of 82 | 663rd of 3,080 |
| Winter storms | 9 | 0 | – | 77th of 82 | 2795th of 3,077 |
| Extreme cold | 6 | 0 | – | 27th of 82 | 2081st of 3,076 |
| High wind and dust storms | 5 | 0 | $56K | 59th of 82 | 2536th 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 Harrison County record: every hazard by year and month, the deadliest events and FEMA's declarations.