Alert archive / North Carolina / Flash Flood Warnings
Flash Flood Warnings in North Carolina, 2014
71 flash flood warnings in 2014. 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 2014. Tap one for its archive.
- Flash Flood Warnings
- 71
- Busiest month
- September19 flash flood warnings
- Busiest day
- May 16, 20145 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.
44 of 71 flash flood warnings covering North Carolina in 2014 had a flash flood report inside them; 81 of 100 flash flood reports fell inside a warning, on average 78 minutes after it went out.
North Carolina, 2014
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Flash flood warnings | 71 | 44 | 38% | 100 | 81% | 78 min |
Each office's whole area, 2014
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Wakefield, VA: flash flood warnings | 5 | 4 | 20% | 15 | 67% | 37 min |
| NWS Morristown, TN: flash flood warnings | 10 | 5 | 50% | 10 | 80% | 44 min |
| NWS Greenville-Spartanburg, SC: flash flood warnings | 45 | 27 | 40% | 88 | 78% | 74 min |
| NWS Raleigh, NC: flash flood warnings | 35 | 25 | 29% | 54 | 93% | 87 min |
| NWS Wilmington, NC: flash flood warnings | 1 | 0 | 100% | 0 | ||
| NWS Blacksburg, VA: flash flood warnings | 23 | 10 | 57% | 26 | 69% | 57 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 |
|---|---|---|---|---|
| Jan 11, 10:15 AM EST | Flash Flood Warning | GSP | Cabarrus, Mecklenburg, Union | 6 hr |
| Apr 25, 5:22 PM EDT | Flash Flood Warning | AKQ | Northampton | 3 hr |
| Apr 25, 5:42 PM EDT | Flash Flood Warning | RAH | Franklin, Halifax, Vance, Warren | 3 hr |
| Apr 29, 5:40 PM EDT | Flash Flood Warning | RAH | Cumberland | 3 hr |
| Apr 29, 5:43 PM EDT | Flash Flood Warning | RAH | Wilson | 3 hr |
| Apr 29, 6:09 PM EDT | Flash Flood Warning | RAH | Edgecombe | 3 hr |
| Apr 30, 3:24 PM EDT | Flash Flood Warning | RAH | Halifax | 2 hr |
| May 15, 5:34 AM EDT | Flash Flood Warning | RNK | Ashe, Watauga | 6 hr |
| May 15, 3:19 PM EDT | Flash Flood Warning | RAH | Wake | 3 hr |
| May 15, 6:35 PM EDT | Flash Flood Warning | RAH | Orange | 3 hr |
| May 15, 8:42 PM EDT | Flash Flood Warning | RAH | Wake | 6 hr |
| May 15, 9:17 PM EDT | Flash Flood Warning | RAH | Durham, Orange | 6 hr |
| May 15, 11:06 PM EDT | Flash Flood Warning | RAH | Franklin, Granville, Person, Vance | 4 hr |
| May 15, 11:21 PM EDT | Flash Flood Warning | RAH | Cumberland, Harnett, Johnston | 4 hr |
| May 16, 2:44 AM EDT | Flash Flood Warning | RAH | Wake | 3 hr |
| May 29, 6:53 PM EDT | Flash Flood Warning | GSP | Mecklenburg, Union | 3 hr |
| May 29, 8:08 PM EDT | Flash Flood Warning | GSP | Gaston, Mecklenburg | 3 hr |
| May 29, 9:42 PM EDT | Flash Flood Warning | GSP | Alexander, Iredell | 3 hr |
| May 29, 9:48 PM EDT | Flash Flood Warning | GSP | Alexander, Iredell | 3 hr |
| Jun 11, 5:38 PM EDT | Flash Flood Warning | RAH | Wake | 3 hr |
| Jun 11, 5:43 PM EDT | Flash Flood Warning | RAH | Durham | 3 hr |
| Jun 11, 8:10 PM EDT | Flash Flood Warning | RAH | Davidson, Forsyth | 3 hr |
| Jun 13, 9:49 PM EDT | Flash Flood Warning | AKQ | Camden, Gates, Pasquotank | 2 hr |
| Jun 17, 2:51 PM EDT | Flash Flood Warning | RNK | Surry | 3 hr |
| Jun 21, 8:45 PM EDT | Flash Flood Warning | RAH | Halifax | 90 min |
| Jun 27, 6:45 PM EDT | Flash Flood Warning | GSP | Mecklenburg | 3 hr |
| Jun 27, 8:13 PM EDT | Flash Flood Warning | RAH | Montgomery, Stanly | 3 hr |
| Jun 29, 3:16 AM EDT | Flash Flood Warning | GSP | Polk, Rutherford | 4 hr |
| Jul 3, 8:12 PM EDT | Flash Flood Warning | GSP | Mecklenburg | 3 hr |
| Jul 3, 11:36 PM EDT | Flash Flood Warning | RAH | Edgecombe, Halifax | 3 hr |
| Jul 4, 12:18 AM EDT | Flash Flood Warning | RAH | Wayne, Wilson | 117 min |
| Jul 4, 2:20 AM EDT | Flash Flood Warning | RAH | Edgecombe, Halifax | 115 min |
| Jul 12, 4:38 PM EDT | Flash Flood Warning | GSP | Haywood | 82 min |
| Jul 15, 4:59 PM EDT | Flash Flood Warning | RAH | Durham | 3 hr |
| Jul 15, 5:45 PM EDT | Flash Flood Warning | RAH | Wake | 3 hr |
| Jul 15, 5:54 PM EDT | Flash Flood Warning | GSP | Mecklenburg, Union | 3 hr |
| Jul 21, 10:03 AM EDT | Flash Flood Warning | GSP | Gaston, Mecklenburg | 3 hr |
| Jul 21, 11:58 AM EDT | Flash Flood Warning | RAH | Durham | 3 hr |
| Jul 21, 12:45 PM EDT | Flash Flood Warning | RAH | Chatham, Wake | 2 hr |
| Jul 21, 2:23 PM EDT | Flash Flood Warning | RAH | Halifax | 112 min |
| Jul 24, 7:07 PM EDT | Flash Flood Warning | RAH | Franklin, Johnston, Nash, Wake | 3 hr |
| Aug 9, 6:52 PM EDT | Flash Flood Warning | GSP | McDowell | 3 hr |
| Aug 11, 11:27 PM EDT | Flash Flood Warning | MRX | Cherokee | 2 hr |
| Aug 12, 7:47 PM EDT | Flash Flood Warning | RAH | Wake | 3 hr |
| Aug 12, 9:05 PM EDT | Flash Flood Warning | RAH | Johnston | 3 hr |
| Aug 12, 10:43 PM EDT | Flash Flood Warning | RAH | Wake | 6 hr |
| Sep 2, 5:08 PM EDT | Flash Flood Warning | RAH | Cumberland | 2 hr |
| Sep 3, 7:16 PM EDT | Flash Flood Warning | GSP | Mecklenburg | 3 hr |
| Sep 4, 6:19 PM EDT | Flash Flood Warning | RNK | Ashe | 6 hr |
| Sep 5, 3:38 PM EDT | Flash Flood Warning | RAH | Forsyth, Guilford | 112 min |
| Sep 5, 5:29 PM EDT | Flash Flood Warning | RAH | Davidson, Forsyth | 2 hr |
| Sep 6, 5:46 PM EDT | Flash Flood Warning | RNK | Ashe | 6 hr |
| Sep 8, 4:34 AM EDT | Flash Flood Warning | GSP | Polk | 3 hr |
| Sep 8, 4:42 PM EDT | Flash Flood Warning | RAH | Johnston, Wake, Wayne, Wilson | 11 hr |
| Sep 8, 5:22 PM EDT | Flash Flood Warning | RAH | Franklin, Halifax, Nash, Warren | 12 hr |
| Sep 8, 6:10 PM EDT | Flash Flood Warning | RAH | Sampson | 4 hr |
| Sep 12, 9:41 PM EDT | Flash Flood Warning | GSP | Avery, Burke, Caldwell | 3 hr |
| Sep 12, 11:38 PM EDT | Flash Flood Warning | RNK | Watauga, Wilkes | 6 hr |
| Sep 13, 12:17 AM EDT | Flash Flood Warning | GSP | Burke, Catawba, Cleveland, Lincoln, McDowell, Rutherford | 3 hr |
| Sep 13, 8:46 PM EDT | Flash Flood Warning | GSP | Mecklenburg, Union | 3 hr |
| Sep 13, 9:07 PM EDT | Flash Flood Warning | GSP | Mecklenburg | 3 hr |
| Sep 13, 10:01 PM EDT | Flash Flood Warning | GSP | Gaston, Mecklenburg | 3 hr |
| Sep 13, 10:33 PM EDT | Flash Flood Warning | GSP | Cleveland, Gaston | 3 hr |
| Sep 19, 12:19 AM EDT | Flash Flood Warning | GSP | Union | 3 hr |
| Sep 19, 1:44 AM EDT | Flash Flood Warning | GSP | Union | 3 hr |
| Oct 14, 6:22 PM EDT | Flash Flood Warning | GSP | Transylvania | 4 hr |
| Oct 14, 7:04 PM EDT | Flash Flood Warning | GSP | Henderson | 4 hr |
| Oct 14, 8:12 PM EDT | Flash Flood Warning | RNK | Ashe, Watauga, Wilkes | 6 hr |
| Oct 14, 8:38 PM EDT | Flash Flood Warning | GSP | Avery, Burke, Caldwell, McDowell, Mitchell, Yancey | 3 hr |
| Oct 14, 10:37 PM EDT | Flash Flood Warning | RNK | Alleghany | 6 hr |
| Dec 24, 12:36 PM EST | Flash Flood Warning | ILM | New Hanover, Pender | 24 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Mecklenburg County11
- Wake County10
- Halifax County7
- Union County6
- Franklin County4
- Ashe County4
- Durham County4
- Johnston County4
- Gaston County4
- Cumberland County3
- Wilson County3
- Edgecombe County3
- Watauga County3
- Forsyth County3
- McDowell County3
- Burke County3
- Vance County2
- Warren County2
- Orange County2
- Alexander County2
- Iredell County2
- Davidson County2
- Polk County2
- Rutherford County2
- Wayne County2
- Nash County2
- Avery County2
- Caldwell County2
- Wilkes County2
- Cleveland County2
- Cabarrus County1
- Northampton County1
- Granville County1
- Person County1
- Harnett County1
- Camden County1
- Gates County1
- Pasquotank County1
- Surry County1
- Montgomery County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20132015
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.