Hanahan, SC
Local storm history & FEMA National Risk Index data
Hanahan is rated Relatively High for overall natural hazard risk — higher risk than most US counties — based on FEMA's National Risk Index for Berkeley County, SC. The county's highest-rated hazards are hurricane, earthquake, and wildfire.
Storm events near Hanahan
NOAA-recorded tornado, hail, and flood events within 25 miles of Hanahan's center, 2016–2026 — the only hazards NOAA reports with exact coordinates, so these counts are specific to Hanahan itself, not the whole county.
County-wide hazard risk
Every other hazard FEMA and NOAA track — including drought — is only scored at the county level. These are Berkeley County's FEMA National Risk Index scores, covering Hanahan along with the rest of the county, not a Hanahan-specific figure.
| Hazard | NRI score | Rating |
|---|---|---|
| Wildfire | 89.8 | Relatively Moderate |
| Inland Flooding | 80.7 | Relatively Moderate |
| Coastal Flooding | 78.6 | Relatively Moderate |
| Earthquake | 97.7 | Relatively Moderate |
| Heat Wave | 70.4 | Relatively Low |
| Tornado | 78.1 | Relatively Moderate |
| Avalanche | — | Not Applicable |
| Cold Wave | 77.9 | Relatively Moderate |
| Drought | 21.4 | Very Low |
| Hail | 67 | Relatively Low |
| Hurricane | 98.3 | Very High |
| Ice Storm | 87.9 | Relatively High |
| Landslide | 51.5 | Very Low |
| Lightning | 89 | Relatively High |
| Strong Wind | 74.5 | Relatively Moderate |
| Tsunami | — | Insufficient Data |
| Volcanic Activity | — | Not Applicable |
| Winter Weather | 76.2 | Relatively Moderate |
Source: FEMA National Risk Index v1.20.0, December 2025. See the methodology page for definitions, or the full Berkeley County risk profile for disaster declarations, social vulnerability, and climate projection data.
Other cities in Berkeley County:
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Frequently asked questions
What natural hazards is Hanahan, SC at risk of?
Hanahan is rated Relatively High for overall natural hazard risk by FEMA's National Risk Index — higher risk than most US counties. The highest-rated hazards for Berkeley County, where Hanahan is located, are hurricane, earthquake, and wildfire.
What is Hanahan's biggest natural hazard risk?
Hurricane is the highest-rated hazard for Berkeley County, where Hanahan is located, scoring 98.3 out of 100 on FEMA's National Risk Index (rated "Very High").
Is Hanahan a high-risk area for natural disasters?
Yes — Hanahan carries higher risk than most US counties for overall natural hazard risk, per FEMA's National Risk Index rating of "Relatively High" for Berkeley County.
Has Hanahan had tornadoes, hail, or flooding?
NOAA has recorded 21 tornado, 156 hail, 140 inland flooding events within 25 miles of Hanahan since 2016.