Williamsburg County, South Carolina: hazard risk
FEMA rates Williamsburg County's overall risk Relatively Moderate (score 82.1 of 100, higher than 82% of rated U.S. counties); 1 of its 15 hazards are rated Relatively High or Very High, led by hurricane. Its storm record holds 308 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 | 95.2 | $15M |
| Earthquake | Relatively Moderate | 91.8 | $4.6M |
| Strong Wind | Relatively Moderate | 81.8 | $906K |
| Ice Storm | Relatively Moderate | 75.2 | $188K |
| Lightning | Relatively Moderate | 74.2 | $373K |
| Cold Wave | Relatively Moderate | 65.8 | $1.1M |
| Wildfire | Relatively Low | 87.2 | $588K |
| Heat Wave | Relatively Low | 75.8 | $773K |
| Riverine Flooding | Relatively Low | 59.8 | $5.8M |
| Hail | Relatively Low | 50.8 | $174K |
| Drought | Relatively Low | 45.7 | $68K |
| Tornado | Relatively Low | 44.5 | $666K |
| Winter Weather | Relatively Low | 39.6 | $29K |
| Coastal Flooding | Very Low | 23.0 | $734 |
| Landslide | Very Low | 20.0 | $75 |
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 | 150 | 0 | $1.1M | 46th of 46 | 2120th of 3,080 |
| Hail | 79 | 0 | $210K | 45th of 46 | 2303rd of 3,080 |
| Floods | 23 | 0 | $13M | 43rd of 46 | 2655th of 3,080 |
| Winter storms | 16 | 0 | $5.9M | 38th of 46 | 2736th of 3,077 |
| Tornadoes | 14 | 0 | $3.7M | 46th of 46 | 2349th of 3,080 |
| Drought | 7 | 0 | – | 26th of 46 | 2095th of 3,063 |
| High wind and dust storms | 5 | 1 | $384K | 46th of 46 | 2718th of 3,080 |
| Heat | 4 | 0 | – | 26th of 46 | 1951st of 3,076 |
| Lightning | 4 | 0 | $656K | 35th of 46 | 1353rd of 3,080 |
| Heavy rain | 3 | 0 | – | 28th of 46 | 1617th of 3,080 |
| Hurricanes and tropical storms | 3 | 0 | $6.6M | 40th of 46 | 815th of 1,849 |
Source: NOAA NCEI Storm Events Database, 1950 to 2026-06-30; damage in 2025 dollars. Search the record at NCEI.
The full Williamsburg County record: every hazard by year and month, the deadliest events and FEMA's declarations.