Tornado Warnings in South Carolina, 2019

By month

14 of 54 tornado warnings covering South Carolina in 2019 had a tornado report inside them; 22 of 26 tornado reports fell inside a warning, on average 13 minutes after it went out.

South Carolina, 2019

Each office's whole area, 2019

An office's figures cover every county it serves, including across state lines.

Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.

• Horry County18
• Orangeburg County4
• Edgefield County4
• Lee County4
• Sumter County4
• Berkeley County3
• Colleton County3
• Lexington County3
• McCormick County3
• Kershaw County3
• Clarendon County3
• Florence County3
• Marion County3
• Bamberg County2
• Aiken County2
• Calhoun County2
• Richland County2
• Chesterfield County2
• Jasper County2
• Beaufort County2
• Chester County2
• Union County2
• Cherokee County2
• Williamsburg County2
• Dillon County2
• Barnwell County1
• Dorchester County1
• Lancaster County1
• Greenville County1
• Pickens County1
• Anderson County1
• Saluda County1
• Hampton County1
• Greenwood County1
• Laurens County1
• Fairfield County1
• Newberry County1
• York County1
• Marlboro County1
• Georgetown County1

1. April 19, 201920tornado warnings
2. September 5, 201915tornado warnings
3. March 3, 20197tornado warnings
4. April 14, 20193tornado warnings
5. April 15, 20192tornado warnings
6. October 20, 20192tornado warnings
7. October 31, 20192tornado warnings
8. March 4, 20191tornado warnings
9. May 4, 20191tornado warnings
10. May 11, 20191tornado warnings

Alerts in force nowTornadoes on recordThe radar archive20182020

National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.