1 warning is in effect for McCormick County, SC. The most serious is a freeze warning.
Since 2016 the National Weather Service has issued about 606 alerts that included McCormick County, roughly 61 a year. The most common is the severe thunderstorm warning (163 from 2016 to 2025). The last tornado warning was issued on March 31, 2025. 15 tornadoes have touched down in the county since 1950.
Updated from the National Weather Service · lists refresh hourly; the live map loads current alerts directly from the NWS
FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 9 AM EST SUNDAY
Full alert text
* WHAT...Sub-freezing temperatures as low as 32 expected.
* WHERE...Portions of east central Georgia and central South
Carolina.
* WHEN...From 1 AM to 9 AM EST Sunday.
* IMPACTS...Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
What to do: Take steps now to protect tender plants from the cold.
To prevent water pipes from freezing; wrap or drain or allow them to
drip slowly.
15 tornadoes have been recorded in McCormick County since 1950, injuring 4 people. That ranks 39 of 46 counties in South Carolina. The most recent was on March 28, 2010 (rated EF1).