Tornado Warnings in North Carolina, 2018

By month

35 of 104 tornado warnings covering North Carolina in 2018 had a tornado report inside them; 42 of 52 tornado reports fell inside a warning, on average 12 minutes after it went out.

North Carolina, 2018

Each office's whole area, 2018

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.

• Carteret County12
• Jones County11
• New Hanover County11
• Onslow County10
• Duplin County9
• Pender County9
• Craven County8
• Wayne County7
• Lenoir County6
• Columbus County6
• Dare County5
• Robeson County5
• Hyde County4
• Pamlico County4
• Nash County4
• Brunswick County4
• Gaston County3
• Warren County3
• Franklin County3
• Halifax County3
• Bertie County3
• Edgecombe County3
• Granville County3
• Sampson County3
• Scotland County3
• Cumberland County2
• Cherokee County2
• Mecklenburg County2
• Caswell County2
• Rockingham County2
• Vance County2
• Montgomery County2
• Wilson County2
• Currituck County2
• Greene County2
• Bladen County2
• Durham County2
• Hoke County1
• Clay County1
• Guilford County1

1. September 16, 201823tornado warnings
2. September 14, 201819tornado warnings
3. September 15, 201819tornado warnings
4. September 17, 201816tornado warnings
5. March 1, 20184tornado warnings
6. September 13, 20184tornado warnings
7. November 13, 20184tornado warnings
8. April 15, 20183tornado warnings
9. October 11, 20182tornado warnings
10. November 24, 20182tornado warnings
11. March 17, 20181tornado warnings
12. March 18, 20181tornado warnings

Alerts in force nowTornadoes on recordThe radar archive20172019

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.