Alert archive / North Carolina / Durham County
Weather alerts in Durham County, North Carolina, 2010
194 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Durham County and its neighbors
Each county as a circle sized by its count in 2010. Tap one for its archive.
- Alerts
- 194
- Warnings
- 43
- Watches
- 24
- Advisories
- 45
- Busiest month
- July36 alerts
- Busiest day
- October 27, 20108 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
3 of 3 tornado warnings covering Durham County in 2010 had a tornado report inside them.
Durham County, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 3 | 0% | 0 | ||
| Severe thunderstorm warnings | 27 | 22 | 19% | 18 | 94% | 17 min |
| Flash flood warnings | 6 | 4 | 33% | 8 | 100% | 51 min |
Each office's whole area, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Raleigh, NC: tornado warnings | 27 | 9 | 67% | 21 | 100% | 19 min |
| NWS Raleigh, NC: severe thunderstorm warnings | 259 | 187 | 28% | 476 | 87% | 22 min |
| NWS Raleigh, NC: flash flood warnings | 73 | 40 | 45% | 112 | 83% | 86 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 | Lasted |
|---|---|---|---|
| Jan 23, 3:51 PM EST | Flash Flood Watch | RAH | 40 hr |
| Jan 24, 9:35 PM EST | Wind Advisory | RAH | 10 hr |
| Jan 24, 11:33 PM EST | Tornado Watch | SPC | 7 hr |
| Jan 24, 11:40 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Jan 25, 1:53 AM EST | Flash Flood Warning | RAH | 4 hr |
| Jan 25, 3:25 AM EST | Mesoscale Discussion | SPC | 110 min |
| Jan 27, 3:57 PM EST | Winter Storm Watch | RAH | 36 hr |
| Jan 28, 4:14 PM EST | Winter Storm Warning | RAH | 52 hr |
| Jan 30, 8:03 PM EST | Winter Weather Advisory | RAH | 7 hr |
| Jan 31, 2:21 PM EST | Winter Weather Advisory | RAH | 22 hr |
| Feb 1, 3:37 PM EST | Winter Weather Advisory | RAH | 19 hr |
| Feb 4, 2:55 PM EST | Flood Watch | RAH | 33 hr |
| Feb 4, 2:55 PM EST | Winter Weather Advisory | RAH | 25 hr |
| Feb 5, 5:25 PM EST | Areal Flood Advisory | RAH | 4 hr |
| Feb 5, 10:04 PM EST | Areal Flood Advisory | RAH | 4 hr |
| Feb 5, 10:10 PM EST | Areal Flood Advisory | RAH | 4 hr |
| Feb 9, 4:39 AM EST | High Wind Watch | RAH | 10 hr |
| Feb 9, 2:25 PM EST | High Wind Warning | RAH | 30 hr |
| Feb 12, 3:58 AM EST | Winter Weather Advisory | RAH | 30 hr |
| Feb 13, 11:40 AM EST | Winter Weather Advisory | RAH | 22 hr |
| Feb 23, 2:27 AM EST | Dense Fog Advisory | RAH | 5 hr |
| Feb 23, 3:36 PM EST | Winter Weather Advisory | RAH | 41 hr |
| Mar 2, 4:00 AM EST | Winter Weather Advisory | RAH | 26 hr |
| Mar 2, 2:46 PM EST | Winter Storm Warning | RAH | 15 hr |
| Mar 11, 3:58 AM EST | Dense Fog Advisory | RAH | 5 hr |
| Mar 22, 3:51 AM EDT | Mesoscale Discussion | SPC | 84 min |
| Mar 28, 7:37 PM EDT | Tornado Watch | SPC | 4 hr |
| Mar 28, 10:13 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Mar 28, 10:58 PM EDT | Tornado Watch | SPC | 6 hr |
| Mar 28, 11:21 PM EDT | Severe Thunderstorm Warning | RAH | 54 min |
| Mar 28, 11:26 PM EDT | Tornado Warning | RAH | 49 min |
| Mar 28, 11:56 PM EDT | Tornado Warning | RAH | 34 min |
| Mar 29, 12:25 AM EDT | Mesoscale Discussion | SPC | 95 min |
| Mar 29, 12:38 AM EDT | Areal Flood Advisory | RAH | 4 hr |
| Apr 8, 6:37 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Apr 8, 8:25 PM EDT | Severe Thunderstorm Warning | RAH | 50 min |
| Apr 8, 8:40 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 8, 10:07 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Apr 10, 9:24 PM EDT | Frost Advisory | RAH | 10 hr |
| Apr 25, 7:39 AM EDT | Special Weather Statement | RAH | 66 min |
| Apr 25, 2:53 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Apr 28, 2:54 PM EDT | Frost Advisory | RAH | 17 hr |
| May 3, 10:39 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 6, 9:39 PM EDT | Special Weather Statement | RAH | 66 min |
| May 7, 3:35 AM EDT | Fire Weather Watch | RAH | 12 hr |
| May 15, 11:58 PM EDT | Special Weather Statement | RAH | 62 min |
| May 16, 12:25 AM EDT | Special Weather Statement | RAH | 35 min |
| May 16, 1:02 AM EDT | Special Weather Statement | RAH | 43 min |
| May 16, 5:07 PM EDT | Special Weather Statement | RAH | 38 min |
| May 17, 12:44 PM EDT | Special Weather Statement | RAH | 61 min |
| May 17, 2:58 PM EDT | Areal Flood Advisory | RAH | 3 hr |
| May 17, 5:31 PM EDT | Areal Flood Advisory | RAH | 3 hr |
| May 22, 5:59 PM EDT | Severe Thunderstorm Warning | RAH | 46 min |
| May 22, 6:46 PM EDT | Severe Thunderstorm Warning | RAH | 44 min |
| May 22, 7:09 PM EDT | Flash Flood Warning | RAH | 116 min |
| May 22, 7:52 PM EDT | Special Weather Statement | RAH | 53 min |
| May 22, 8:04 PM EDT | Flash Flood Warning | RAH | 2 hr |
| May 23, 1:03 PM EDT | Mesoscale Discussion | SPC | 57 min |
| May 23, 6:54 PM EDT | Special Weather Statement | RAH | 66 min |
| May 23, 7:12 PM EDT | Areal Flood Advisory | RAH | 118 min |
| May 28, 6:18 PM EDT | Mesoscale Discussion | SPC | 87 min |
| May 28, 9:51 PM EDT | Severe Thunderstorm Warning | RAH | 54 min |
| May 28, 10:14 PM EDT | Flash Flood Warning | RAH | 3 hr |
| May 28, 10:14 PM EDT | Severe Thunderstorm Warning | RAH | 46 min |
| Jun 1, 7:17 PM EDT | Special Weather Statement | RAH | 58 min |
| Jun 12, 2:47 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 12, 4:16 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Jun 13, 12:05 AM EDT | Special Weather Statement | RAH | 55 min |
| Jun 13, 12:55 AM EDT | Special Weather Statement | RAH | 50 min |
| Jun 13, 12:27 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 3:46 PM EDT | Severe Thunderstorm Warning | RAH | 19 min |
| Jun 13, 4:44 PM EDT | Special Weather Statement | RAH | 46 min |
| Jun 14, 3:48 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jun 14, 4:13 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 16, 1:07 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jun 16, 2:19 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 16, 2:26 PM EDT | Special Weather Statement | RAH | 64 min |
| Jun 16, 2:39 PM EDT | Severe Thunderstorm Warning | RAH | 51 min |
| Jun 16, 3:12 PM EDT | Areal Flood Advisory | RAH | 108 min |
| Jun 16, 4:07 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jun 23, 2:28 PM EDT | Special Weather Statement | RAH | 62 min |
| Jun 23, 3:18 PM EDT | Severe Thunderstorm Warning | RAH | 42 min |
| Jun 23, 3:18 PM EDT | Severe Thunderstorm Warning | RAH | 25 min |
| Jun 23, 3:30 PM EDT | Heat Advisory | RAH | 28 hr |
| Jun 23, 3:43 PM EDT | Severe Thunderstorm Warning | RAH | 47 min |
| Jun 26, 1:33 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jun 29, 12:34 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 8, 1:42 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Jul 8, 4:19 PM EDT | Special Weather Statement | RAH | 56 min |
| Jul 10, 12:10 AM EDT | Severe Thunderstorm Warning | RAH | 50 min |
| Jul 12, 11:26 AM EDT | Mesoscale Discussion | SPC | 94 min |
| Jul 13, 12:09 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 13, 4:51 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jul 13, 6:36 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 13, 8:05 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Jul 13, 8:48 PM EDT | Areal Flood Advisory | RAH | 3 hr |
| Jul 13, 8:54 PM EDT | Severe Thunderstorm Warning | RAH | 53 min |
| Jul 13, 10:12 PM EDT | Mesoscale Discussion | SPC | 33 min |
| Jul 13, 11:14 PM EDT | Areal Flood Advisory | RAH | 3 hr |
| Jul 17, 9:39 AM EDT | Special Weather Statement | RAH | 66 min |
| Jul 17, 11:12 AM EDT | Special Weather Statement | RAH | 48 min |
| Jul 17, 11:56 AM EDT | Severe Thunderstorm Warning | RAH | 64 min |
| Jul 17, 12:35 PM EDT | Severe Thunderstorm Warning | RAH | 40 min |
| Jul 18, 5:15 PM EDT | Special Weather Statement | RAH | 60 min |
| Jul 18, 5:27 PM EDT | Severe Thunderstorm Warning | RAH | 48 min |
| Jul 18, 9:14 PM EDT | Special Weather Statement | RAH | 61 min |
| Jul 18, 9:17 PM EDT | Severe Thunderstorm Warning | RAH | 43 min |
| Jul 20, 12:49 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Jul 20, 6:05 PM EDT | Severe Thunderstorm Warning | RAH | 40 min |
| Jul 20, 6:05 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jul 22, 3:08 PM EDT | Heat Advisory | RAH | 29 hr |
| Jul 23, 11:18 AM EDT | Excessive Heat Warning | RAH | 9 hr |
| Jul 23, 2:50 PM EDT | Heat Advisory | RAH | 29 hr |
| Jul 24, 3:28 PM EDT | Heat Advisory | RAH | 29 hr |
| Jul 25, 9:46 AM EDT | Excessive Heat Warning | RAH | 10 hr |
| Jul 25, 8:35 PM EDT | Severe Thunderstorm Warning | RAH | 40 min |
| Jul 25, 9:19 PM EDT | Special Weather Statement | RAH | 56 min |
| Jul 25, 9:30 PM EDT | Severe Thunderstorm Warning | RAH | 45 min |
| Jul 27, 2:42 PM EDT | Flash Flood Watch | RAH | 8 hr |
| Jul 29, 8:17 PM EDT | Special Weather Statement | RAH | 88 min |
| Jul 29, 9:31 PM EDT | Special Weather Statement | RAH | 44 min |
| Jul 29, 10:16 PM EDT | Severe Thunderstorm Warning | RAH | 44 min |
| Jul 29, 10:44 PM EDT | Areal Flood Advisory | RAH | 102 min |
| Aug 4, 3:16 PM EDT | Heat Advisory | RAH | 27 hr |
| Aug 4, 9:21 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Aug 4, 11:28 PM EDT | Special Weather Statement | RAH | 62 min |
| Aug 5, 12:16 AM EDT | Severe Thunderstorm Warning | RAH | 44 min |
| Aug 5, 2:42 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Aug 5, 3:31 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 5, 6:23 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Aug 5, 6:40 PM EDT | Severe Thunderstorm Warning | RAH | 50 min |
| Aug 10, 3:11 PM EDT | Heat Advisory | RAH | 28 hr |
| Aug 12, 1:29 AM EDT | Heat Advisory | RAH | 17 hr |
| Aug 18, 4:13 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Aug 18, 5:46 PM EDT | Special Weather Statement | RAH | 59 min |
| Aug 18, 6:00 PM EDT | Special Weather Statement | RAH | 45 min |
| Aug 19, 10:12 AM EDT | Flash Flood Watch | RAH | 18 hr |
| Aug 19, 9:09 PM EDT | Areal Flood Advisory | RAH | 111 min |
| Aug 19, 9:30 PM EDT | Flash Flood Warning | RAH | 116 min |
| Aug 22, 10:01 PM EDT | Special Weather Statement | RAH | 44 min |
| Aug 22, 10:07 PM EDT | Areal Flood Advisory | RAH | 68 min |
| Aug 24, 3:08 AM EDT | Areal Flood Advisory | RAH | 67 min |
| Aug 24, 3:18 PM EDT | Special Weather Statement | RAH | 57 min |
| Aug 26, 3:31 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Sep 27, 3:46 AM EDT | Flash Flood Watch | RAH | 19 hr |
| Sep 28, 3:07 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 28, 7:28 PM EDT | Flash Flood Watch | RAH | 50 hr |
| Sep 30, 5:45 AM EDT | Flash Flood Warning | RAH | 3 hr |
| Oct 21, 12:49 AM EDT | Dense Fog Advisory | RAH | 8 hr |
| Oct 22, 8:00 PM EDT | Frost Advisory | RAH | 12 hr |
| Oct 25, 10:44 AM EDT | Mesoscale Discussion | SPC | 61 min |
| Oct 25, 12:34 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Oct 25, 1:54 PM EDT | Special Weather Statement | RAH | 51 min |
| Oct 27, 2:44 AM EDT | Tornado Watch | SPC | 7 hr |
| Oct 27, 5:28 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 27, 1:46 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Oct 27, 2:06 PM EDT | Tornado Watch | SPC | 6 hr |
| Oct 27, 4:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Oct 27, 5:29 PM EDT | Severe Thunderstorm Warning | RAH | 42 min |
| Oct 27, 5:33 PM EDT | Tornado Warning | RAH | 42 min |
| Oct 27, 7:53 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Oct 27, 8:29 PM EDT | Tornado Watch | SPC | 8 hr |
| Oct 27, 10:41 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Oct 29, 2:47 PM EDT | Frost Advisory | RAH | 17 hr |
| Nov 5, 3:32 PM EDT | Freeze Watch | RAH | 12 hr |
| Nov 6, 3:22 AM EDT | Freeze Warning | RAH | 30 hr |
| Nov 16, 7:34 PM EST | Mesoscale Discussion | SPC | 116 min |
| Nov 16, 8:47 PM EST | Tornado Watch | SPC | 6 hr |
| Nov 16, 10:56 PM EST | Special Weather Statement | RAH | 64 min |
| Nov 16, 11:07 PM EST | Severe Thunderstorm Warning | RAH | 23 min |
| Nov 16, 11:27 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Nov 16, 11:36 PM EST | Severe Thunderstorm Warning | RAH | 39 min |
| Nov 22, 4:07 AM EST | Dense Fog Advisory | RAH | 6 hr |
| Nov 30, 9:29 PM EST | Mesoscale Discussion | SPC | 91 min |
| Dec 1, 12:48 AM EST | Mesoscale Discussion | SPC | 117 min |
| Dec 1, 2:13 AM EST | Tornado Watch | SPC | 8 hr |
| Dec 1, 3:48 AM EST | Special Weather Statement | RAH | 57 min |
| Dec 1, 4:26 AM EST | Severe Thunderstorm Warning | RAH | 49 min |
| Dec 4, 12:01 PM EST | Winter Weather Advisory | RAH | 17 hr |
| Dec 4, 1:24 PM EST | Special Weather Statement | RAH | 96 min |
| Dec 4, 2:35 PM EST | Special Weather Statement | RAH | 85 min |
| Dec 13, 11:25 AM EST | Wind Chill Advisory | RAH | 22 hr |
| Dec 15, 2:18 PM EST | Winter Weather Advisory | RAH | 25 hr |
| Dec 16, 3:29 PM EST | Winter Weather Advisory | RAH | 19 hr |
| Dec 18, 3:23 AM EST | Winter Weather Advisory | RAH | 30 hr |
| Dec 18, 1:46 PM EST | Special Weather Statement | RAH | 74 min |
| Dec 24, 9:27 PM EST | Winter Storm Watch | RAH | 7 hr |
| Dec 25, 3:58 AM EST | Winter Storm Warning | RAH | 44 hr |
| Dec 25, 7:15 PM EST | Special Weather Statement | RAH | 105 min |
| Dec 25, 7:16 PM EST | Special Weather Statement | RAH | 104 min |
| Dec 25, 11:23 PM EST | Special Weather Statement | RAH | 97 min |
| Dec 25, 11:31 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Dec 26, 3:38 PM EST | Winter Weather Advisory | RAH | 20 hr |
| Dec 27, 2:34 PM EST | Winter Weather Advisory | RAH | 21 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 27 |
| Tornado Warning | 3 |
| Severe Thunderstorm Watch | 5 |
| Tornado Watch | 8 |
| Mesoscale Discussion | 45 |
| Special Weather Statement | 37 |
| Flooding | |
| Flash Flood Warning | 6 |
| Flash Flood Watch | 5 |
| Flood Watch | 1 |
| Areal Flood Advisory | 14 |
| Winter | |
| Winter Storm Warning | 3 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 14 |
| Heat | |
| Excessive Heat Warning | 2 |
| Heat Advisory | 7 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Frost Advisory | 4 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Wind Advisory | 1 |
| Fire | |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 4 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20092011
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.