Alert archive / North Carolina / Flash Flood Warnings
Flash Flood Warnings in North Carolina, 2013
137 flash flood warnings in 2013. 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 2013. Tap one for its archive.
- Flash Flood Warnings
- 137
- Busiest month
- July62 flash flood warnings
- Busiest day
- June 7, 201314 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.
93 of 137 flash flood warnings covering North Carolina in 2013 had a flash flood report inside them; 240 of 284 flash flood reports fell inside a warning, on average 75 minutes after it went out.
North Carolina, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Flash flood warnings | 137 | 93 | 32% | 284 | 85% | 75 min |
Each office's whole area, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Blacksburg, VA: flash flood warnings | 69 | 38 | 45% | 121 | 73% | 101 min |
| NWS Morristown, TN: flash flood warnings | 24 | 16 | 33% | 26 | 96% | 45 min |
| NWS Greenville-Spartanburg, SC: flash flood warnings | 91 | 69 | 24% | 204 | 81% | 68 min |
| NWS Raleigh, NC: flash flood warnings | 48 | 32 | 33% | 119 | 97% | 62 min |
| NWS Wakefield, VA: flash flood warnings | 14 | 10 | 29% | 31 | 97% | 59 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 17, 3:01 PM EST | Flash Flood Warning | GSP | Henderson, Transylvania | 6 hr |
| Jan 30, 3:44 PM EST | Flash Flood Warning | GSP | Transylvania | 6 hr |
| Jan 30, 4:19 PM EST | Flash Flood Warning | RNK | Alleghany, Ashe, Watauga | 10 hr |
| Jan 30, 4:53 PM EST | Flash Flood Warning | GSP | Avery, Burke, Caldwell, McDowell, Mitchell, Yancey | 6 hr |
| Jan 30, 5:22 PM EST | Flash Flood Warning | GSP | Buncombe, Henderson | 3 hr |
| Jan 30, 6:25 PM EST | Flash Flood Warning | RNK | Alleghany, Ashe, Stokes, Surry, Watauga, Wilkes | 6 hr |
| Jan 30, 7:59 PM EST | Flash Flood Warning | RNK | Rockingham, Stokes, Surry, Wilkes, Yadkin | 6 hr |
| Jan 31, 12:57 AM EST | Flash Flood Warning | GSP | Burke | 3 hr |
| Apr 11, 11:52 PM EDT | Flash Flood Warning | GSP | Transylvania | 4 hr |
| May 6, 2:55 AM EDT | Flash Flood Warning | RNK | Watauga | 6 hr |
| May 19, 3:15 AM EDT | Flash Flood Warning | GSP | Caldwell | 3 hr |
| May 21, 4:48 PM EDT | Flash Flood Warning | RAH | Halifax | 117 min |
| May 22, 2:07 PM EDT | Flash Flood Warning | RNK | Ashe, Watauga | 6 hr |
| May 23, 4:43 PM EDT | Flash Flood Warning | RAH | Edgecombe, Nash | 2 hr |
| Jun 3, 3:28 AM EDT | Flash Flood Warning | GSP | Mecklenburg | 3 hr |
| Jun 5, 10:27 PM EDT | Flash Flood Warning | GSP | Catawba | 4 hr |
| Jun 6, 6:58 PM EDT | Flash Flood Warning | GSP | Cabarrus, Mecklenburg | 6 hr |
| Jun 6, 7:38 PM EDT | Flash Flood Warning | GSP | Madison | 3 hr |
| Jun 6, 8:31 PM EDT | Flash Flood Warning | RNK | Ashe | 4 hr |
| Jun 6, 11:14 PM EDT | Flash Flood Warning | RNK | Surry | 4 hr |
| Jun 7, 6:24 AM EDT | Flash Flood Warning | RAH | Franklin, Harnett, Johnston, Nash, Wake | 111 min |
| Jun 7, 8:17 AM EDT | Flash Flood Warning | RAH | Franklin, Johnston, Nash, Wake, Warren | 103 min |
| Jun 7, 10:57 AM EDT | Flash Flood Warning | RAH | Edgecombe, Nash, Wilson | 108 min |
| Jun 7, 11:25 AM EDT | Flash Flood Warning | RAH | Halifax | 110 min |
| Jun 7, 12:11 PM EDT | Flash Flood Warning | AKQ | Northampton | 3 hr |
| Jun 7, 1:58 PM EDT | Flash Flood Warning | RAH | Chatham, Cumberland, Durham, Franklin, Granville, Harnett and 6 more | 2 hr |
| Jun 7, 3:08 PM EDT | Flash Flood Warning | RAH | Franklin, Harnett, Johnston, Nash, Wake, Wayne and 1 more | 3 hr |
| Jun 7, 4:00 PM EDT | Flash Flood Warning | RAH | Durham, Granville, Halifax, Person, Vance, Wake and 1 more | 3 hr |
| Jun 7, 4:52 PM EDT | Flash Flood Warning | AKQ | Northampton | 5 hr |
| Jun 7, 6:09 PM EDT | Flash Flood Warning | RAH | Franklin | 111 min |
| Jun 7, 7:04 PM EDT | Flash Flood Warning | RAH | Halifax, Vance, Warren | 116 min |
| Jun 7, 7:21 PM EDT | Flash Flood Warning | GSP | Cabarrus, Gaston, Lincoln, Mecklenburg | 3 hr |
| Jun 7, 11:13 PM EDT | Flash Flood Warning | GSP | Cabarrus, Mecklenburg | 3 hr |
| Jun 7, 11:19 PM EDT | Flash Flood Warning | RAH | Davidson, Montgomery, Randolph, Stanly | 4 hr |
| Jun 7, 11:58 PM EDT | Flash Flood Warning | RAH | Anson, Richmond | 4 hr |
| Jun 9, 5:30 PM EDT | Flash Flood Warning | GSP | Burke, Caldwell | 3 hr |
| Jun 10, 4:18 PM EDT | Flash Flood Warning | RAH | Davidson, Forsyth, Guilford | 3 hr |
| Jun 10, 4:26 PM EDT | Flash Flood Warning | RAH | Randolph | 3 hr |
| Jun 10, 6:01 PM EDT | Flash Flood Warning | RAH | Johnston, Wake | 3 hr |
| Jun 23, 7:40 PM EDT | Flash Flood Warning | RAH | Cumberland, Hoke | 3 hr |
| Jun 24, 1:42 AM EDT | Flash Flood Warning | GSP | Henderson, Transylvania | 3 hr |
| Jun 24, 10:10 PM EDT | Flash Flood Warning | GSP | Cleveland, Rutherford | 3 hr |
| Jun 25, 3:14 PM EDT | Flash Flood Warning | RAH | Cumberland, Harnett, Hoke, Moore | 3 hr |
| Jun 25, 4:35 PM EDT | Flash Flood Warning | RAH | Johnston | 3 hr |
| Jun 25, 6:20 PM EDT | Flash Flood Warning | RAH | Alamance, Guilford | 3 hr |
| Jun 28, 8:58 PM EDT | Flash Flood Warning | GSP | Cabarrus, Catawba, Gaston, Iredell, Lincoln, Mecklenburg and 1 more | 3 hr |
| Jun 28, 9:32 PM EDT | Flash Flood Warning | RAH | Stanly | 3 hr |
| Jun 29, 12:08 AM EDT | Flash Flood Warning | RAH | Stanly | 6 hr |
| Jun 30, 4:40 AM EDT | Flash Flood Warning | RAH | Durham, Granville, Orange | 2 hr |
| Jun 30, 3:18 PM EDT | Flash Flood Warning | RAH | Durham, Orange | 3 hr |
| Jun 30, 3:52 PM EDT | Flash Flood Warning | RAH | Chatham | 3 hr |
| Jun 30, 6:10 PM EDT | Flash Flood Warning | RAH | Orange | 3 hr |
| Jun 30, 6:48 PM EDT | Flash Flood Warning | RAH | Anson, Montgomery, Richmond, Stanly | 4 hr |
| Jun 30, 8:11 PM EDT | Flash Flood Warning | GSP | Iredell, Mecklenburg | 6 hr |
| Jul 1, 4:49 AM EDT | Flash Flood Warning | RAH | Montgomery, Richmond, Stanly | 4 hr |
| Jul 2, 12:01 AM EDT | Flash Flood Warning | GSP | Burke, Caldwell | 3 hr |
| Jul 3, 3:01 PM EDT | Flash Flood Warning | GSP | Madison | 3 hr |
| Jul 3, 4:29 PM EDT | Flash Flood Warning | GSP | Madison | 3 hr |
| Jul 3, 11:27 PM EDT | Flash Flood Warning | GSP | Cleveland | 4 hr |
| Jul 4, 4:14 PM EDT | Flash Flood Warning | RNK | Ashe, Watauga | 12 hr |
| Jul 4, 5:37 PM EDT | Flash Flood Warning | GSP | Buncombe | 4 hr |
| Jul 4, 6:17 PM EDT | Flash Flood Warning | RNK | Alleghany, Ashe, Watauga, Wilkes | 10 hr |
| Jul 4, 7:15 PM EDT | Flash Flood Warning | GSP | Henderson, Transylvania | 4 hr |
| Jul 4, 7:26 PM EDT | Flash Flood Warning | GSP | Polk, Rutherford | 4 hr |
| Jul 4, 8:47 PM EDT | Flash Flood Warning | GSP | Avery, Buncombe, Burke, Caldwell, McDowell, Mitchell and 1 more | 4 hr |
| Jul 4, 11:40 PM EDT | Flash Flood Warning | RNK | Surry | 4 hr |
| Jul 5, 5:12 PM EDT | Flash Flood Warning | RNK | Yadkin | 4 hr |
| Jul 5, 6:17 PM EDT | Flash Flood Warning | RAH | Randolph | 3 hr |
| Jul 7, 4:45 PM EDT | Flash Flood Warning | RNK | Ashe, Watauga, Wilkes | 3 hr |
| Jul 7, 5:14 PM EDT | Flash Flood Warning | GSP | Avery, Burke, Caldwell | 3 hr |
| Jul 8, 12:05 AM EDT | Flash Flood Warning | RAH | Forsyth | 5 hr |
| Jul 8, 1:40 AM EDT | Flash Flood Warning | GSP | Burke, Caldwell | 6 hr |
| Jul 8, 6:15 PM EDT | Flash Flood Warning | RAH | Johnston, Sampson, Wayne | 3 hr |
| Jul 8, 6:49 PM EDT | Flash Flood Warning | RAH | Franklin, Nash, Wake | 2 hr |
| Jul 9, 5:43 PM EDT | Flash Flood Warning | RAH | Anson, Richmond | 3 hr |
| Jul 9, 6:21 PM EDT | Flash Flood Warning | RAH | Montgomery, Richmond | 3 hr |
| Jul 9, 9:30 PM EDT | Flash Flood Warning | GSP | Gaston, Lincoln | 3 hr |
| Jul 9, 11:12 PM EDT | Flash Flood Warning | GSP | Alexander, Caldwell, Catawba | 3 hr |
| Jul 10, 6:44 PM EDT | Flash Flood Warning | RNK | Alleghany, Surry | 4 hr |
| Jul 10, 8:06 PM EDT | Flash Flood Warning | GSP | Buncombe | 3 hr |
| Jul 10, 10:19 PM EDT | Flash Flood Warning | RAH | Guilford | 3 hr |
| Jul 11, 10:02 AM EDT | Flash Flood Warning | GSP | Mecklenburg | 3 hr |
| Jul 11, 11:42 AM EDT | Flash Flood Warning | RAH | Davidson, Guilford, Randolph | 2 hr |
| Jul 11, 7:42 PM EDT | Flash Flood Warning | GSP | Alexander, Davie, Iredell | 3 hr |
| Jul 11, 8:34 PM EDT | Flash Flood Warning | RAH | Forsyth | 116 min |
| Jul 12, 3:15 PM EDT | Flash Flood Warning | RAH | Johnston | 3 hr |
| Jul 12, 4:45 PM EDT | Flash Flood Warning | RAH | Harnett, Johnston | 3 hr |
| Jul 12, 7:48 PM EDT | Flash Flood Warning | GSP | Caldwell | 3 hr |
| Jul 12, 10:44 PM EDT | Flash Flood Warning | GSP | Burke | 3 hr |
| Jul 13, 1:25 AM EDT | Flash Flood Warning | GSP | Polk | 3 hr |
| Jul 16, 6:33 PM EDT | Flash Flood Warning | GSP | Avery | 3 hr |
| Jul 17, 2:11 PM EDT | Flash Flood Warning | RAH | Anson, Richmond | 3 hr |
| Jul 17, 7:46 PM EDT | Flash Flood Warning | RNK | Alleghany, Ashe, Surry, Watauga, Wilkes | 6 hr |
| Jul 19, 1:39 PM EDT | Flash Flood Warning | RNK | Ashe, Wilkes | 3 hr |
| Jul 20, 3:48 PM EDT | Flash Flood Warning | GSP | Polk | 3 hr |
| Jul 21, 3:27 PM EDT | Flash Flood Warning | RAH | Guilford | 2 hr |
| Jul 21, 3:52 PM EDT | Flash Flood Warning | GSP | Iredell | 3 hr |
| Jul 21, 7:14 PM EDT | Flash Flood Warning | GSP | Cabarrus, Mecklenburg | 106 min |
| Jul 22, 11:17 PM EDT | Flash Flood Warning | RNK | Wilkes | 3 hr |
| Jul 22, 11:58 PM EDT | Flash Flood Warning | RNK | Surry | 3 hr |
| Jul 24, 6:27 PM EDT | Flash Flood Warning | GSP | Mecklenburg | 3 hr |
| Jul 25, 1:59 AM EDT | Flash Flood Warning | RNK | Stokes, Surry | 6 hr |
| Jul 27, 5:10 AM EDT | Flash Flood Warning | RNK | Alleghany | 6 hr |
| Jul 27, 5:30 AM EDT | Flash Flood Warning | RNK | Wilkes | 6 hr |
| Jul 27, 6:06 AM EDT | Flash Flood Warning | GSP | Catawba, Cleveland, Lincoln | 3 hr |
| Jul 27, 6:53 AM EDT | Flash Flood Warning | GSP | Catawba | 3 hr |
| Jul 27, 9:05 AM EDT | Flash Flood Warning | GSP | Catawba, Lincoln | 3 hr |
| Jul 27, 9:44 AM EDT | Flash Flood Warning | RNK | Ashe, Watauga, Wilkes | 6 hr |
| Jul 27, 9:52 AM EDT | Flash Flood Warning | GSP | Alexander, Catawba, Iredell | 5 hr |
| Jul 27, 10:06 AM EDT | Flash Flood Warning | GSP | Catawba, Lincoln | 5 hr |
| Jul 27, 10:20 AM EDT | Flash Flood Warning | GSP | Cleveland | 3 hr |
| Jul 27, 12:51 PM EDT | Flash Flood Warning | RAH | Forsyth | 3 hr |
| Jul 27, 1:09 PM EDT | Flash Flood Warning | RNK | Stokes | 3 hr |
| Jul 27, 7:54 PM EDT | Flash Flood Warning | GSP | Burke, McDowell | 3 hr |
| Jul 27, 8:45 PM EDT | Flash Flood Warning | RNK | Ashe, Watauga, Wilkes | 4 hr |
| Jul 31, 10:04 PM EDT | Flash Flood Warning | RNK | Caswell | 6 hr |
| Aug 1, 11:33 PM EDT | Flash Flood Warning | RNK | Caswell | 6 hr |
| Aug 2, 10:46 PM EDT | Flash Flood Warning | RAH | Cumberland, Sampson | 3 hr |
| Aug 3, 7:17 PM EDT | Flash Flood Warning | RAH | Wake | 3 hr |
| Aug 7, 11:10 AM EDT | Flash Flood Warning | GSP | Henderson | 3 hr |
| Aug 7, 12:56 PM EDT | Flash Flood Warning | GSP | Transylvania | 4 hr |
| Aug 7, 1:57 PM EDT | Flash Flood Warning | GSP | Henderson | 4 hr |
| Aug 9, 4:42 PM EDT | Flash Flood Warning | GSP | Caldwell | 3 hr |
| Aug 9, 8:01 PM EDT | Flash Flood Warning | GSP | Cabarrus | 119 min |
| Aug 10, 2:43 AM EDT | Flash Flood Warning | RNK | Ashe | 6 hr |
| Aug 10, 5:40 PM EDT | Flash Flood Warning | RNK | Wilkes | 3 hr |
| Aug 17, 10:22 PM EDT | Flash Flood Warning | RAH | Davidson, Forsyth, Guilford | 3 hr |
| Aug 19, 3:57 AM EDT | Flash Flood Warning | GSP | Cabarrus, Mecklenburg | 3 hr |
| Aug 21, 2:28 PM EDT | Flash Flood Warning | GSP | Cleveland | 3 hr |
| Aug 31, 2:12 PM EDT | Flash Flood Warning | GSP | Burke, Caldwell | 3 hr |
| Aug 31, 2:42 PM EDT | Flash Flood Warning | RNK | Wilkes | 6 hr |
| Aug 31, 3:46 PM EDT | Flash Flood Warning | RNK | Surry | 4 hr |
| Sep 1, 4:18 PM EDT | Flash Flood Warning | GSP | Alexander, Caldwell | 3 hr |
| Sep 1, 4:45 PM EDT | Flash Flood Warning | RAH | Davidson, Forsyth, Guilford | 3 hr |
| Sep 1, 5:26 PM EDT | Flash Flood Warning | GSP | Henderson, Polk, Rutherford | 3 hr |
| Sep 1, 5:28 PM EDT | Flash Flood Warning | RAH | Alamance, Durham, Orange | 4 hr |
| Sep 1, 6:25 PM EDT | Flash Flood Warning | RAH | Wake | 3 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Ashe County12
- Caldwell County12
- Wilkes County12
- Watauga County10
- Burke County10
- Mecklenburg County10
- Surry County9
- Wake County9
- Catawba County8
- Johnston County8
- Henderson County7
- Cabarrus County7
- Guilford County7
- Transylvania County6
- Alleghany County6
- Nash County6
- Franklin County6
- Lincoln County6
- Richmond County6
- Forsyth County6
- Harnett County5
- Durham County5
- Davidson County5
- Stanly County5
- Cleveland County5
- Iredell County5
- Avery County4
- Buncombe County4
- Stokes County4
- Halifax County4
- Cumberland County4
- Montgomery County4
- Randolph County4
- Anson County4
- Orange County4
- Polk County4
- Alexander County4
- McDowell County3
- Madison County3
- Warren County3
22 more counties
- Granville County3
- Hoke County3
- Vance County3
- Gaston County3
- Rutherford County3
- Mitchell County2
- Yancey County2
- Yadkin County2
- Edgecombe County2
- Wilson County2
- Northampton County2
- Chatham County2
- Moore County2
- Person County2
- Wayne County2
- Alamance County2
- Sampson County2
- Caswell County2
- Rockingham County1
- Lee County1
- Rowan County1
- Davie County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20122014
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.