Tornado Risk in Florence County, SC
Florence County's tornado history, by the numbers
35 tornado tracks have crossed Florence County since 1953 by NOAA's count, roughly one every 2.2 years - the Elevated band on this site's scale. That is the 75th percentile nationally for tornado frequency. Among 46 South Carolina counties in this dataset, Florence County ranks 14 for how often a tornado touches down.
The number that matters more than frequency
No violent (EF4-5) tornado has been recorded in Florence County in NOAA's 76-year database. Of its 35 recorded tracks, 28 were weak (EF0-1) and 7 significant (EF2-3).
Shelter and safe-room economics
South Carolina does not currently have a confirmed state rebate layered on top of FEMA's 75% Hazard Mitigation cost-share, so a Florence County homeowner should expect the full national range: $2,890-$13,280, $7,645 typical.
Power after the storm, not just shelter during it
138,049 people live in Florence County, and a tornado outbreak's power loss usually reaches far more of South Carolina than the tracks themselves touch. A portable battery unit is the faster, no-fuel way to bridge that outage.
Wind damage may need its own endorsement
South Carolina is one of a handful of states where insurers can write wind/hail damage out of a standard homeowners policy - tornado damage may not be fully covered without a separate wind endorsement. Worth confirming directly on a Florence County policy rather than assuming it is included.
What Florence County's figure does not tell you
Florence County's figure is county-wide, not address-specific. Florence County covers about 800 square miles, so a single touch here counts the same as a single touch in a county a fraction of that size. NOAA also documents that older records undercount weaker tornadoes from before Doppler radar became standard. Florence County has about 138,049 residents.