Alert archive / North Carolina / Flash Flood Warnings
Flash Flood Warnings in North Carolina, 2023
106 flash flood warnings in 2023. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of flash flood warnings reaches back to 1986.
Flash Flood Warnings by county
Each county as a circle sized by its count in 2023. Tap one for its archive.
- Flash Flood Warnings
- 106
- Busiest month
- August38 flash flood warnings
- Busiest day
- August 31, 202310 flash flood warnings
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
55 of 106 flash flood warnings covering North Carolina in 2023 had a flash flood report inside them; 150 of 184 flash flood reports fell inside a warning, on average 102 minutes after it went out.
North Carolina, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Flash flood warnings | 106 | 55 | 48% | 184 | 82% | 102 min |
Each office's whole area, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Greenville-Spartanburg, SC: flash flood warnings | 20 | 10 | 50% | 28 | 93% | 93 min |
| NWS Wilmington, NC: flash flood warnings | 15 | 11 | 27% | 28 | 93% | 134 min |
| NWS Morristown, TN: flash flood warnings | 45 | 25 | 44% | 48 | 79% | 51 min |
| NWS Newport/Morehead City, NC: flash flood warnings | 15 | 11 | 27% | 41 | 95% | 201 min |
| NWS Wakefield, VA: flash flood warnings | 83 | 58 | 30% | 106 | 95% | 58 min |
| NWS Raleigh, NC: flash flood warnings | 49 | 25 | 49% | 90 | 78% | 44 min |
| NWS Blacksburg, VA: flash flood warnings | 30 | 18 | 40% | 60 | 70% | 88 min |
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.
The alerts
Every alert, in the order issued. Times are local, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 7:17 AM EDT | Flash Flood Warning | RAH | Harnett, Wake | 3 hr |
| Apr 7, 11:11 AM EDT | Flash Flood Warning | RAH | Durham, Orange | 3 hr |
| Apr 14, 6:29 PM EDT | Flash Flood Warning | RAH | Guilford | 3 hr |
| May 16, 9:49 PM EDT | Flash Flood Warning | RAH | Granville, Person | 67 min |
| May 19, 8:50 AM EDT | Flash Flood Warning | ILM | Brunswick, New Hanover | 6 hr |
| Jun 19, 2:45 PM EDT | Flash Flood Warning | RAH | Guilford | 3 hr |
| Jun 19, 7:52 PM EDT | Flash Flood Warning | GSP | Cabarrus, Iredell, Mecklenburg, Rowan | 6 hr |
| Jun 20, 2:48 AM EDT | Flash Flood Warning | GSP | Henderson, Polk, Rutherford | 3 hr |
| Jun 20, 5:15 AM EDT | Flash Flood Warning | GSP | Polk | 4 hr |
| Jun 20, 5:41 AM EDT | Flash Flood Warning | GSP | Henderson, Polk | 4 hr |
| Jun 20, 3:16 PM EDT | Flash Flood Warning | GSP | Iredell, Rowan | 6 hr |
| Jun 20, 4:04 PM EDT | Flash Flood Warning | GSP | Cabarrus | 4 hr |
| Jun 20, 11:41 PM EDT | Flash Flood Warning | RAH | Scotland | 5 hr |
| Jun 21, 8:19 PM EDT | Flash Flood Warning | AKQ | Bertie, Hertford | 3 hr |
| Jun 23, 5:49 PM EDT | Flash Flood Warning | RAH | Durham, Orange | 2 hr |
| Jun 26, 11:00 PM EDT | Flash Flood Warning | RAH | Harnett, Lee, Montgomery, Moore | 3 hr |
| Jun 26, 11:58 PM EDT | Flash Flood Warning | RAH | Cumberland | 3 hr |
| Jun 30, 9:56 PM EDT | Flash Flood Warning | RAH | Durham | 4 hr |
| Jul 3, 4:15 PM EDT | Flash Flood Warning | MHX | Duplin | 3 hr |
| Jul 5, 2:24 PM EDT | Flash Flood Warning | RAH | Cumberland, Harnett | 84 min |
| Jul 5, 2:29 PM EDT | Flash Flood Warning | RAH | Randolph | 2 hr |
| Jul 5, 4:05 PM EDT | Flash Flood Warning | RAH | Cumberland | 3 hr |
| Jul 5, 4:49 PM EDT | Flash Flood Warning | MHX | Duplin, Onslow | 116 min |
| Jul 5, 5:19 PM EDT | Flash Flood Warning | MHX | Duplin | 86 min |
| Jul 5, 5:22 PM EDT | Flash Flood Warning | ILM | Pender | 49 min |
| Jul 5, 7:06 PM EDT | Flash Flood Warning | RAH | Montgomery, Stanly | 84 min |
| Jul 7, 7:31 PM EDT | Flash Flood Warning | RAH | Wayne | 2 hr |
| Jul 8, 1:29 PM EDT | Flash Flood Warning | RAH | Guilford | 3 hr |
| Jul 8, 1:37 PM EDT | Flash Flood Warning | GSP | Mecklenburg | 4 hr |
| Jul 8, 1:41 PM EDT | Flash Flood Warning | RAH | Alamance, Guilford | 3 hr |
| Jul 8, 5:44 PM EDT | Flash Flood Warning | RAH | Franklin, Wake | 66 min |
| Jul 9, 12:24 PM EDT | Flash Flood Warning | RAH | Alamance, Chatham, Guilford, Randolph | 3 hr |
| Jul 9, 1:18 PM EDT | Flash Flood Warning | RAH | Durham, Orange | 102 min |
| Jul 9, 1:38 PM EDT | Flash Flood Warning | RAH | Chatham, Harnett, Wake | 2 hr |
| Jul 9, 3:10 PM EDT | Flash Flood Warning | MHX | Duplin | 3 hr |
| Jul 9, 4:16 PM EDT | Flash Flood Warning | MHX | Onslow | 112 min |
| Jul 9, 4:40 PM EDT | Flash Flood Warning | MHX | Washington | 2 hr |
| Jul 14, 3:39 AM EDT | Flash Flood Warning | RAH | Franklin, Granville, Vance, Warren | 5 hr |
| Jul 14, 5:45 AM EDT | Flash Flood Warning | RAH | Chatham, Durham, Lee, Wake | 105 min |
| Jul 14, 9:20 AM EDT | Flash Flood Warning | RAH | Cumberland, Sampson | 3 hr |
| Jul 14, 11:41 AM EDT | Flash Flood Warning | RAH | Sampson | 2 hr |
| Jul 14, 5:37 PM EDT | Flash Flood Warning | RAH | Richmond | 113 min |
| Jul 14, 9:33 PM EDT | Flash Flood Warning | RAH | Davidson | 2 hr |
| Jul 15, 9:36 PM EDT | Flash Flood Warning | RNK | Alleghany, Surry, Wilkes | 7 hr |
| Jul 15, 9:53 PM EDT | Flash Flood Warning | GSP | Alexander, Caldwell | 3 hr |
| Jul 15, 10:02 PM EDT | Flash Flood Warning | RNK | Wilkes | 3 hr |
| Jul 15, 11:00 PM EDT | Flash Flood Warning | GSP | Burke | 2 hr |
| Jul 15, 11:43 PM EDT | Flash Flood Warning | GSP | Alexander, Iredell | 107 min |
| Jul 19, 6:17 PM EDT | Flash Flood Warning | RAH | Cumberland, Sampson | 3 hr |
| Jul 20, 1:31 AM EDT | Flash Flood Warning | ILM | Pender | 83 min |
| Jul 31, 2:46 AM EDT | Flash Flood Warning | ILM | Columbus | 3 hr |
| Aug 4, 5:19 PM EDT | Flash Flood Warning | AKQ | Bertie, Gates, Hertford | 3 hr |
| Aug 4, 6:44 PM EDT | Flash Flood Warning | AKQ | Bertie | 3 hr |
| Aug 15, 1:17 AM EDT | Flash Flood Warning | MRX | Cherokee | 4 hr |
| Aug 15, 2:33 AM EDT | Flash Flood Warning | GSP | Graham | 3 hr |
| Aug 15, 4:11 AM EDT | Flash Flood Warning | MRX | Cherokee, Clay | 81 min |
| Aug 15, 5:38 PM EDT | Flash Flood Warning | RAH | Franklin, Wake | 2 hr |
| Aug 15, 6:09 PM EDT | Flash Flood Warning | RAH | Edgecombe, Nash, Wilson | 2 hr |
| Aug 15, 6:49 PM EDT | Flash Flood Warning | RAH | Johnston | 2 hr |
| Aug 16, 5:57 PM EDT | Flash Flood Warning | ILM | Columbus | 3 hr |
| Aug 24, 8:24 PM EDT | Flash Flood Warning | RAH | Guilford | 3 hr |
| Aug 27, 4:21 PM EDT | Flash Flood Warning | AKQ | Hertford | 3 hr |
| Aug 27, 8:21 PM EDT | Flash Flood Warning | RAH | Anson, Montgomery, Richmond, Stanly | 3 hr |
| Aug 27, 8:59 PM EDT | Flash Flood Warning | RAH | Chatham, Durham, Orange | 105 min |
| Aug 27, 9:02 PM EDT | Flash Flood Warning | RAH | Chatham, Harnett, Lee, Moore | 62 min |
| Aug 28, 12:24 AM EDT | Flash Flood Warning | RAH | Edgecombe, Nash, Wilson | 3 hr |
| Aug 28, 9:29 AM EDT | Flash Flood Warning | MHX | Duplin, Lenoir | 4 hr |
| Aug 28, 4:52 PM EDT | Flash Flood Warning | RNK | Alleghany, Ashe | 5 hr |
| Aug 28, 6:14 PM EDT | Flash Flood Warning | RNK | Watauga, Wilkes | 4 hr |
| Aug 28, 7:09 PM EDT | Flash Flood Warning | RNK | Wilkes | 3 hr |
| Aug 28, 7:59 PM EDT | Flash Flood Warning | AKQ | Hertford | 3 hr |
| Aug 28, 9:13 PM EDT | Flash Flood Warning | GSP | Iredell | 6 hr |
| Aug 28, 9:38 PM EDT | Flash Flood Warning | AKQ | Bertie, Hertford | 3 hr |
| Aug 28, 11:48 PM EDT | Flash Flood Warning | AKQ | Bertie | 3 hr |
| Aug 29, 12:13 AM EDT | Flash Flood Warning | RAH | Davidson, Montgomery, Randolph, Stanly | 3 hr |
| Aug 29, 5:56 PM EDT | Flash Flood Warning | RAH | Cumberland | 2 hr |
| Aug 29, 7:49 PM EDT | Flash Flood Warning | RAH | Montgomery, Stanly | 2 hr |
| Aug 29, 8:41 PM EDT | Flash Flood Warning | RAH | Franklin | 95 min |
| Aug 30, 6:28 PM EDT | Flash Flood Warning | RAH | Granville, Vance, Warren | 90 min |
| Aug 30, 10:54 PM EDT | Flash Flood Warning | ILM | Brunswick, Columbus | 5 hr |
| Aug 30, 11:03 PM EDT | Flash Flood Warning | ILM | Robeson | 4 hr |
| Aug 31, 1:06 AM EDT | Flash Flood Warning | RAH | Cumberland, Sampson | 5 hr |
| Aug 31, 1:12 AM EDT | Flash Flood Warning | MHX | Duplin, Onslow | 10 hr |
| Aug 31, 1:15 AM EDT | Flash Flood Warning | MHX | Carteret | 10 hr |
| Aug 31, 1:29 AM EDT | Flash Flood Warning | ILM | Bladen, Brunswick, Columbus, New Hanover, Pender | 3 hr |
| Aug 31, 4:55 AM EDT | Flash Flood Warning | MHX | Duplin, Lenoir | 6 hr |
| Aug 31, 5:16 AM EDT | Flash Flood Warning | MHX | Carteret, Dare, Hyde | 7 hr |
| Aug 31, 5:43 AM EDT | Flash Flood Warning | AKQ | Chowan, Perquimans | 6 hr |
| Aug 31, 6:39 AM EDT | Flash Flood Warning | AKQ | Currituck | 6 hr |
| Sep 7, 7:46 PM EDT | Flash Flood Warning | GSP | Union | 2 hr |
| Sep 9, 10:01 AM EDT | Flash Flood Warning | RAH | Wake | 2 hr |
| Sep 9, 1:27 PM EDT | Flash Flood Warning | RAH | Wake | 4 hr |
| Sep 9, 3:29 PM EDT | Flash Flood Warning | RNK | Surry, Wilkes, Yadkin | 2 hr |
| Sep 9, 9:04 PM EDT | Flash Flood Warning | GSP | Union | 3 hr |
| Sep 9, 10:15 PM EDT | Flash Flood Warning | GSP | Union | 5 hr |
| Sep 10, 7:35 PM EDT | Flash Flood Warning | RAH | Davidson, Forsyth, Guilford | 3 hr |
| Sep 12, 6:08 PM EDT | Flash Flood Warning | RAH | Guilford | 3 hr |
| Sep 23, 6:02 AM EDT | Flash Flood Warning | MHX | Carteret, Onslow | 3 hr |
| Sep 23, 7:01 AM EDT | Flash Flood Warning | MHX | Craven, Jones | 4 hr |
| Sep 23, 8:40 AM EDT | Flash Flood Warning | MHX | Beaufort, Craven, Pitt | 6 hr |
| Sep 23, 10:27 AM EDT | Flash Flood Warning | RAH | Edgecombe, Halifax, Nash, Wilson | 5 hr |
| Sep 23, 11:47 AM EDT | Flash Flood Warning | RAH | Franklin, Johnston, Wake | 5 hr |
| Sep 23, 12:43 PM EDT | Flash Flood Warning | AKQ | Bertie, Hertford, Northampton | 6 hr |
| Dec 17, 7:03 PM EST | Flash Flood Warning | RAH | Sampson, Wayne | 3 hr |
| Dec 17, 7:51 PM EST | Flash Flood Warning | MHX | Duplin | 3 hr |
| Dec 18, 12:28 AM EST | Flash Flood Warning | AKQ | Chowan | 3 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Wake County8
- Guilford County8
- Duplin County8
- Cumberland County7
- Durham County6
- Bertie County6
- Hertford County6
- Harnett County5
- Montgomery County5
- Franklin County5
- Chatham County5
- Sampson County5
- Wilkes County5
- Orange County4
- Iredell County4
- Onslow County4
- Stanly County4
- Columbus County4
- Granville County3
- Brunswick County3
- Polk County3
- Lee County3
- Randolph County3
- Pender County3
- Davidson County3
- Edgecombe County3
- Nash County3
- Wilson County3
- Carteret County3
- Union County3
- New Hanover County2
- Cabarrus County2
- Mecklenburg County2
- Rowan County2
- Henderson County2
- Moore County2
- Wayne County2
- Alamance County2
- Vance County2
- Warren County2
34 more counties
- Richmond County2
- Alleghany County2
- Surry County2
- Alexander County2
- Cherokee County2
- Johnston County2
- Lenoir County2
- Chowan County2
- Craven County2
- Person County1
- Rutherford County1
- Scotland County1
- Washington County1
- Caldwell County1
- Burke County1
- Gates County1
- Graham County1
- Clay County1
- Anson County1
- Ashe County1
- Watauga County1
- Robeson County1
- Bladen County1
- Dare County1
- Hyde County1
- Perquimans County1
- Currituck County1
- Yadkin County1
- Forsyth County1
- Jones County1
- Beaufort County1
- Pitt County1
- Halifax County1
- Northampton County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20222024
Sources
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.