Alert archive / North Carolina / Halifax County
Weather alerts in Halifax County, North Carolina, 2010
174 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Halifax County and its neighbors
Each county as a circle sized by its count in 2010. Tap one for its archive.
- Alerts
- 174
- Warnings
- 31
- Watches
- 23
- Advisories
- 39
- Busiest month
- August27 alerts
- Busiest day
- September 30, 201011 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Halifax County, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 12 | 8 | 33% | 12 | 92% | 33 min |
| Flash flood warnings | 7 | 4 | 43% | 2 | 50% | 307 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 7, 3:56 PM EST | Winter Weather Advisory | RAH | 12 hr |
| Jan 23, 3:51 PM EST | Flash Flood Watch | RAH | 40 hr |
| Jan 24, 9:35 PM EST | Wind Advisory | RAH | 10 hr |
| Jan 25, 3:25 AM EST | Mesoscale Discussion | SPC | 110 min |
| Jan 25, 4:05 AM EST | Areal Flood Advisory | RAH | 3 hr |
| 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 5, 3:36 PM EST | Winter Weather Advisory | RAH | 23 hr |
| Feb 5, 7:40 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 6, 10:39 AM EST | River Flood Warning | RAH | 71 hr |
| Feb 6, 5:30 PM EST | Areal Flood Advisory | RAH | 12 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 12, 11:31 AM EST | Winter Storm Warning | RAH | 19 hr |
| Feb 13, 11:40 AM EST | Winter Weather Advisory | RAH | 22 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 28, 10:13 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Mar 28, 10:58 PM EDT | Tornado Watch | SPC | 6 hr |
| Mar 29, 12:25 AM EDT | Mesoscale Discussion | SPC | 95 min |
| Apr 8, 8:40 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 8, 10:07 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Apr 22, 1:57 AM EDT | Dense Fog Advisory | RAH | 7 hr |
| Apr 25, 8:50 AM EDT | Special Weather Statement | RAH | 25 min |
| Apr 25, 6:01 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Apr 26, 6:13 PM EDT | Mesoscale Discussion | SPC | 62 min |
| May 3, 10:39 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 7, 3:35 AM EDT | Fire Weather Watch | RAH | 12 hr |
| May 12, 5:43 PM EDT | Special Weather Statement | RAH | 77 min |
| May 12, 11:47 PM EDT | Special Weather Statement | RAH | 88 min |
| May 15, 12:23 AM EDT | Special Weather Statement | RAH | 82 min |
| May 16, 1:46 AM EDT | Special Weather Statement | RAH | 74 min |
| May 16, 1:50 AM EDT | Special Weather Statement | RAH | 70 min |
| May 17, 10:26 PM EDT | Areal Flood Advisory | RAH | 4 hr |
| May 17, 11:42 PM EDT | Flash Flood Warning | RAH | 4 hr |
| May 23, 1:03 PM EDT | Mesoscale Discussion | SPC | 57 min |
| May 23, 1:32 PM EDT | Flash Flood Warning | RAH | 99 min |
| May 23, 1:49 PM EDT | Special Weather Statement | RAH | 56 min |
| May 23, 2:43 PM EDT | Special Weather Statement | RAH | 62 min |
| May 27, 5:02 PM EDT | Special Weather Statement | RAH | 13 min |
| May 27, 5:19 PM EDT | Special Weather Statement | RAH | 26 min |
| May 27, 5:52 PM EDT | Severe Thunderstorm Warning | RAH | 38 min |
| May 27, 6:22 PM EDT | Severe Thunderstorm Warning | RAH | 38 min |
| May 27, 6:41 PM EDT | Severe Thunderstorm Warning | RAH | 25 min |
| May 28, 6:18 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 10, 10:17 PM EDT | Special Weather Statement | RAH | 118 min |
| 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, 4:07 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jun 16, 7:10 PM EDT | Flash Flood Warning | RAH | 2 hr |
| Jun 23, 3:30 PM EDT | Heat Advisory | RAH | 28 hr |
| 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 13, 4:51 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jul 13, 6:36 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 13, 10:12 PM EDT | Mesoscale Discussion | SPC | 33 min |
| Jul 16, 7:52 PM EDT | Special Weather Statement | RAH | 53 min |
| Jul 17, 9:39 AM EDT | Special Weather Statement | RAH | 66 min |
| Jul 17, 1:17 PM EDT | Severe Thunderstorm Warning | RAH | 43 min |
| Jul 17, 1:46 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jul 20, 12:49 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Jul 20, 3:48 PM EDT | Special Weather Statement | RAH | 57 min |
| Jul 20, 7:27 PM EDT | Severe Thunderstorm Warning | RAH | 30 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, 2:02 PM EDT | Special Weather Statement | AKQ | 58 min |
| Jul 23, 2:41 PM EDT | Special Weather Statement | AKQ | 64 min |
| Jul 23, 2:50 PM EDT | Heat Advisory | RAH | 29 hr |
| Jul 24, 2:12 PM EDT | Excessive Heat Warning | RAH | 6 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 29, 8:17 PM EDT | Special Weather Statement | RAH | 88 min |
| Jul 29, 8:46 PM EDT | Severe Thunderstorm Warning | RAH | 44 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, 10:26 PM EDT | Severe Thunderstorm Warning | RAH | 40 min |
| Aug 4, 11:03 PM EDT | Special Weather Statement | RAH | 57 min |
| Aug 4, 11:47 PM EDT | Areal Flood Advisory | RAH | 103 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, 6:56 PM EDT | Special Weather Statement | RAH | 64 min |
| Aug 5, 7:31 PM EDT | Severe Thunderstorm Warning | RAH | 59 min |
| Aug 10, 3:11 PM EDT | Heat Advisory | RAH | 28 hr |
| Aug 11, 6:18 PM EDT | Special Weather Statement | RAH | 57 min |
| Aug 12, 12:24 AM EDT | Special Weather Statement | RAH | 96 min |
| Aug 12, 1:29 AM EDT | Heat Advisory | RAH | 17 hr |
| Aug 12, 10:34 AM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 12, 12:41 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Aug 12, 4:45 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Aug 12, 7:38 PM EDT | Special Weather Statement | RAH | 52 min |
| Aug 18, 2:58 PM EDT | Special Weather Statement | RAH | 92 min |
| Aug 18, 4:40 PM EDT | Special Weather Statement | RAH | 50 min |
| Aug 18, 4:41 PM EDT | Special Weather Statement | RAH | 49 min |
| Aug 19, 10:12 AM EDT | Flash Flood Watch | RAH | 18 hr |
| Aug 24, 2:30 PM EDT | Special Weather Statement | RAH | 45 min |
| Aug 27, 3:12 PM EDT | Special Weather Statement | RAH | 33 min |
| Aug 27, 3:39 PM EDT | Severe Thunderstorm Warning | RAH | 51 min |
| Aug 27, 4:14 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 27, 5:02 PM EDT | Special Weather Statement | RAH | 43 min |
| Aug 27, 5:03 PM EDT | Special Weather Statement | RAH | 42 min |
| Sep 27, 3:46 AM EDT | Flash Flood Watch | RAH | 19 hr |
| Sep 27, 3:21 PM EDT | Special Weather Statement | RAH | 3 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 29, 11:27 AM EDT | Areal Flood Advisory | RAH | 6 hr |
| Sep 29, 2:45 PM EDT | Areal Flood Warning | RAH | 6 hr |
| Sep 29, 9:39 PM EDT | Tornado Watch | SPC | 7 hr |
| Sep 29, 10:33 PM EDT | Flash Flood Warning | RAH | 6 hr |
| Sep 30, 12:47 AM EDT | Mesoscale Discussion | SPC | 88 min |
| Sep 30, 4:02 AM EDT | Mesoscale Discussion | SPC | 118 min |
| Sep 30, 4:29 AM EDT | Flash Flood Warning | RAH | 4 hr |
| Sep 30, 4:55 AM EDT | Tornado Watch | SPC | 8 hr |
| Sep 30, 8:01 AM EDT | Flash Flood Warning | RAH | 4 hr |
| Sep 30, 8:25 AM EDT | Mesoscale Discussion | SPC | 95 min |
| Sep 30, 10:49 AM EDT | Mesoscale Discussion | SPC | 116 min |
| Sep 30, 12:13 PM EDT | Areal Flood Advisory | RAH | 4 hr |
| Sep 30, 6:50 PM EDT | Flash Flood Warning | RAH | 3 hr |
| Oct 1, 1:02 PM EDT | Special Weather Statement | RAH | 6 hr |
| Oct 21, 12:49 AM EDT | Dense Fog Advisory | RAH | 8 hr |
| Oct 25, 12:34 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Oct 25, 2:36 PM EDT | Special Weather Statement | RAH | 84 min |
| Oct 27, 2:44 AM EDT | Tornado Watch | SPC | 7 hr |
| Oct 27, 2:06 PM EDT | Tornado Watch | SPC | 6 hr |
| Oct 27, 4:03 PM EDT | Mesoscale Discussion | SPC | 87 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 28, 1:19 AM EDT | Mesoscale Discussion | SPC | 56 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 7, 2:41 PM EST | Freeze Warning | RAH | 17 hr |
| Nov 16, 8:47 PM EST | Tornado Watch | SPC | 6 hr |
| Nov 16, 11:27 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Nov 17, 12:23 AM EST | Severe Thunderstorm Warning | RAH | 52 min |
| Nov 17, 12:52 AM EST | Severe Thunderstorm Warning | RAH | 38 min |
| Nov 17, 1:07 AM EST | Severe Thunderstorm Warning | RAH | 27 min |
| Nov 22, 4:07 AM EST | Dense Fog Advisory | RAH | 6 hr |
| Nov 22, 10:16 PM EST | Dense Fog Advisory | RAH | 8 hr |
| Dec 1, 1:02 AM EST | Mesoscale Discussion | SPC | 118 min |
| Dec 1, 2:13 AM EST | Tornado Watch | SPC | 8 hr |
| Dec 1, 4:25 AM EST | Mesoscale Discussion | SPC | 2 hr |
| Dec 1, 5:18 AM EST | Mesoscale Discussion | SPC | 117 min |
| Dec 1, 5:19 AM EST | Special Weather Statement | RAH | 56 min |
| Dec 1, 6:13 AM EST | Special Weather Statement | RAH | 62 min |
| Dec 4, 12:01 PM EST | Winter Weather Advisory | RAH | 17 hr |
| Dec 4, 2:35 PM EST | Special Weather Statement | RAH | 85 min |
| Dec 12, 4:49 PM EST | Special Weather Statement | RAH | 56 min |
| Dec 12, 6:20 PM EST | Special Weather Statement | RAH | 40 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, 11:00 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 16, 2:10 PM EST | Special Weather Statement | RAH | 80 min |
| 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, 3:16 PM EST | Special Weather Statement | RAH | 104 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, 9:05 PM EST | Special Weather Statement | RAH | 55 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, 4:09 AM EST | Mesoscale Discussion | SPC | 6 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.
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.