Alert archive / North Carolina / Union County
Weather alerts in Union County, North Carolina, 2010
155 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Union County and its neighbors
Each county as a circle sized by its count in 2010. Tap one for its archive.
- Alerts
- 155
- Warnings
- 37
- Watches
- 23
- Advisories
- 40
- Busiest month
- July31 alerts
- Busiest day
- July 13, 20106 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 1 tornado warnings covering Union County in 2010 had a tornado report inside them.
Union County, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 21 | 19 | 10% | 19 | 95% | 25 min |
| Flash flood warnings | 4 | 3 | 25% | 3 | 100% | 56 min |
Each office's whole area, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Greenville-Spartanburg, SC: tornado warnings | 50 | 11 | 78% | 16 | 81% | 16 min |
| NWS Greenville-Spartanburg, SC: severe thunderstorm warnings | 470 | 362 | 23% | 722 | 81% | 25 min |
| NWS Greenville-Spartanburg, SC: flash flood warnings | 56 | 39 | 30% | 99 | 88% | 108 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 |
|---|---|---|---|
| Dec 31, 9:14 PM EST | Dense Fog Advisory | GSP | 12 hr |
| Jan 22, 8:42 PM EST | Flash Flood Watch | GSP | 55 hr |
| Jan 24, 11:34 AM EST | Lake Wind Advisory | GSP | 12 hr |
| Jan 24, 3:18 PM EST | Wind Advisory | GSP | 27 hr |
| Jan 24, 6:21 PM EST | Mesoscale Discussion | SPC | 84 min |
| Jan 24, 8:55 PM EST | Mesoscale Discussion | SPC | 95 min |
| Jan 24, 11:24 PM EST | Tornado Warning | GSP | 23 min |
| Jan 24, 11:33 PM EST | Tornado Watch | SPC | 7 hr |
| Jan 25, 12:17 AM EST | Areal Flood Advisory | GSP | 3 hr |
| Jan 25, 7:56 AM EST | Areal Flood Warning | GSP | 6 hr |
| Jan 26, 3:32 AM EST | Lake Wind Advisory | GSP | 15 hr |
| Jan 27, 3:01 PM EST | Winter Storm Watch | GSP | 36 hr |
| Jan 28, 4:15 PM EST | Winter Storm Warning | GSP | 50 hr |
| Jan 29, 9:06 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 30, 10:59 AM EST | Winter Weather Advisory | GSP | 25 hr |
| Feb 4, 4:03 PM EST | Flood Watch | GSP | 27 hr |
| Feb 5, 11:37 AM EST | Areal Flood Warning | GSP | 6 hr |
| Feb 5, 5:31 PM EST | Areal Flood Warning | GSP | 12 hr |
| Feb 6, 5:27 AM EST | Areal Flood Advisory | GSP | 6 hr |
| Feb 9, 4:21 AM EST | High Wind Watch | GSP | 22 hr |
| Feb 9, 2:34 PM EST | High Wind Warning | GSP | 30 hr |
| Feb 10, 8:36 PM EST | Lake Wind Advisory | GSP | 6 hr |
| Feb 12, 4:19 AM EST | Winter Storm Warning | GSP | 23 hr |
| Feb 12, 4:19 AM EST | Winter Weather Advisory | GSP | 23 hr |
| Feb 13, 12:08 PM EST | Winter Weather Advisory | GSP | 23 hr |
| Feb 23, 1:56 AM EST | Dense Fog Advisory | GSP | 8 hr |
| Feb 24, 3:16 PM EST | Wind Advisory | GSP | 27 hr |
| Feb 25, 10:43 AM EST | Lake Wind Advisory | GSP | 7 hr |
| Feb 26, 3:42 AM EST | Lake Wind Advisory | GSP | 11 hr |
| Mar 1, 4:04 AM EST | Winter Storm Watch | GSP | 24 hr |
| Mar 1, 3:12 PM EST | Winter Storm Warning | GSP | 31 hr |
| Mar 2, 4:31 AM EST | Winter Weather Advisory | GSP | 44 hr |
| Mar 11, 3:33 AM EST | Dense Fog Advisory | GSP | 5 hr |
| Mar 21, 9:29 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Mar 28, 3:47 PM EDT | Tornado Watch | SPC | 7 hr |
| Mar 28, 7:19 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Mar 28, 9:25 PM EDT | Severe Thunderstorm Warning | GSP | 65 min |
| 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, 4:28 PM EDT | Tornado Watch | SPC | 7 hr |
| Apr 26, 4:29 AM EDT | Lake Wind Advisory | GSP | 14 hr |
| Apr 27, 3:54 PM EDT | Severe Thunderstorm Warning | GSP | 32 min |
| May 3, 10:39 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 5, 3:36 AM EDT | Dense Fog Advisory | GSP | 5 hr |
| May 16, 5:13 PM EDT | Special Weather Statement | GSP | 47 min |
| May 18, 9:48 PM EDT | Special Weather Statement | GSP | 42 min |
| May 18, 10:14 PM EDT | Severe Thunderstorm Warning | GSP | 61 min |
| May 22, 1:17 PM EDT | Mesoscale Discussion | SPC | 58 min |
| May 28, 4:42 PM EDT | Severe Thunderstorm Warning | GSP | 63 min |
| May 28, 4:54 PM EDT | Areal Flood Advisory | GSP | 111 min |
| May 31, 7:26 AM EDT | Flash Flood Watch | GSP | 20 hr |
| May 31, 12:45 PM EDT | Areal Flood Advisory | GSP | 105 min |
| May 31, 2:29 PM EDT | Flash Flood Warning | GSP | 3 hr |
| Jun 2, 5:51 PM EDT | Special Weather Statement | GSP | 54 min |
| Jun 2, 6:05 PM EDT | Areal Flood Advisory | GSP | 115 min |
| Jun 2, 6:14 PM EDT | Flash Flood Warning | GSP | 2 hr |
| Jun 2, 7:26 PM EDT | Special Weather Statement | GSP | 49 min |
| Jun 2, 8:19 PM EDT | Areal Flood Warning | GSP | 3 hr |
| Jun 10, 5:50 PM EDT | Special Weather Statement | GSP | 40 min |
| Jun 13, 5:30 PM EDT | Severe Thunderstorm Warning | GSP | 60 min |
| Jun 14, 3:48 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jun 14, 5:33 PM EDT | Severe Thunderstorm Warning | GSP | 57 min |
| Jun 14, 7:02 PM EDT | Severe Thunderstorm Warning | GSP | 34 min |
| Jun 15, 4:16 PM EDT | Severe Thunderstorm Warning | GSP | 59 min |
| Jun 15, 5:05 PM EDT | Severe Thunderstorm Warning | GSP | 39 min |
| Jun 17, 3:03 PM EDT | Special Weather Statement | GSP | 42 min |
| Jun 17, 3:20 PM EDT | Severe Thunderstorm Warning | GSP | 55 min |
| Jun 25, 10:22 PM EDT | Special Weather Statement | GSP | 23 min |
| Jun 26, 1:08 AM EDT | Special Weather Statement | GSP | 52 min |
| Jun 29, 12:34 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 29, 3:39 PM EDT | Special Weather Statement | GSP | 36 min |
| Jun 29, 4:04 PM EDT | Severe Thunderstorm Warning | GSP | 31 min |
| Jun 29, 4:15 PM EDT | Severe Thunderstorm Warning | GSP | 60 min |
| Jun 29, 4:37 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jun 30, 12:51 AM EDT | Areal Flood Advisory | GSP | 114 min |
| Jun 30, 2:16 PM EDT | Areal Flood Advisory | GSP | 119 min |
| Jun 30, 2:36 PM EDT | Flash Flood Warning | GSP | 3 hr |
| Jun 30, 4:07 PM EDT | Flash Flood Warning | GSP | 3 hr |
| Jul 9, 6:00 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Jul 9, 8:56 PM EDT | Severe Thunderstorm Warning | GSP | 64 min |
| Jul 12, 11:26 AM EDT | Mesoscale Discussion | SPC | 94 min |
| Jul 12, 1:14 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 12, 1:38 PM EDT | Severe Thunderstorm Warning | GSP | 52 min |
| Jul 12, 4:49 PM EDT | Special Weather Statement | GSP | 41 min |
| Jul 12, 5:20 PM EDT | Areal Flood Warning | GSP | 115 min |
| Jul 13, 12:09 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 13, 2:13 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 13, 4:51 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jul 13, 5:19 PM EDT | Severe Thunderstorm Warning | GSP | 56 min |
| Jul 13, 5:42 PM EDT | Areal Flood Advisory | GSP | 48 min |
| Jul 13, 6:42 PM EDT | Severe Thunderstorm Warning | GSP | 63 min |
| Jul 13, 8:05 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Jul 16, 5:17 PM EDT | Special Weather Statement | GSP | 58 min |
| Jul 20, 3:46 PM EDT | Special Weather Statement | GSP | 44 min |
| Jul 21, 8:39 PM EDT | Special Weather Statement | GSP | 51 min |
| Jul 21, 9:02 PM EDT | Special Weather Statement | GSP | 43 min |
| Jul 21, 9:07 PM EDT | Severe Thunderstorm Warning | GSP | 53 min |
| Jul 22, 3:41 AM EDT | Heat Advisory | GSP | 15 hr |
| Jul 23, 3:10 AM EDT | Heat Advisory | GSP | 16 hr |
| Jul 24, 3:35 AM EDT | Heat Advisory | GSP | 15 hr |
| Jul 24, 3:30 PM EDT | Heat Advisory | GSP | 28 hr |
| Jul 24, 5:08 PM EDT | Severe Thunderstorm Warning | GSP | 41 min |
| Jul 24, 6:00 PM EDT | Special Weather Statement | GSP | 30 min |
| Jul 26, 9:04 PM EDT | Special Weather Statement | GSP | 41 min |
| Jul 26, 9:46 PM EDT | Special Weather Statement | GSP | 44 min |
| Jul 27, 4:50 PM EDT | Special Weather Statement | GSP | 40 min |
| Jul 27, 6:24 PM EDT | Flash Flood Watch | GSP | 10 hr |
| Jul 27, 6:28 PM EDT | Special Weather Statement | GSP | 62 min |
| Jul 27, 9:43 PM EDT | Areal Flood Advisory | GSP | 62 min |
| Aug 3, 4:52 PM EDT | Areal Flood Advisory | GSP | 65 min |
| Aug 5, 2:44 AM EDT | Heat Advisory | GSP | 15 hr |
| Aug 5, 2:42 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Aug 5, 5:34 PM EDT | Severe Thunderstorm Warning | GSP | 56 min |
| Aug 5, 6:23 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Aug 5, 6:29 PM EDT | Severe Thunderstorm Warning | GSP | 61 min |
| Aug 5, 7:28 PM EDT | Severe Thunderstorm Warning | GSP | 77 min |
| Aug 6, 12:58 PM EDT | Mesoscale Discussion | SPC | 32 min |
| Aug 6, 1:25 PM EDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Aug 12, 3:45 AM EDT | Heat Advisory | GSP | 14 hr |
| Aug 14, 9:46 PM EDT | Areal Flood Advisory | GSP | 119 min |
| Aug 19, 4:49 PM EDT | Special Weather Statement | GSP | 26 min |
| Aug 22, 11:17 PM EDT | Special Weather Statement | GSP | 43 min |
| Sep 26, 3:35 AM EDT | Flood Watch | GSP | 43 hr |
| Oct 25, 8:23 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Oct 25, 10:44 AM EDT | Mesoscale Discussion | SPC | 61 min |
| Oct 25, 11:39 AM EDT | Special Weather Statement | GSP | 66 min |
| Oct 26, 7:19 PM EDT | Tornado Watch | SPC | 12 hr |
| Oct 27, 10:40 AM EDT | Mesoscale Discussion | SPC | 95 min |
| 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, 7:53 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Oct 27, 8:29 PM EDT | Tornado Watch | SPC | 8 hr |
| Oct 29, 4:15 AM EDT | Frost Advisory | GSP | 29 hr |
| Nov 5, 3:04 PM EDT | Frost Advisory | GSP | 18 hr |
| Nov 5, 3:04 PM EDT | Freeze Watch | GSP | 12 hr |
| Nov 6, 3:17 AM EDT | Freeze Warning | GSP | 30 hr |
| Nov 16, 7:34 PM EST | Mesoscale Discussion | SPC | 116 min |
| Nov 16, 7:57 PM EST | Special Weather Statement | GSP | 48 min |
| Nov 16, 8:47 PM EST | Tornado Watch | SPC | 6 hr |
| Nov 16, 9:37 PM EST | Special Weather Statement | GSP | 23 min |
| Nov 16, 10:33 PM EST | Special Weather Statement | GSP | 27 min |
| Nov 30, 2:34 PM EST | Tornado Watch | SPC | 7 hr |
| Nov 30, 2:56 PM EST | Lake Wind Advisory | GSP | 12 hr |
| Nov 30, 4:24 PM EST | Mesoscale Discussion | SPC | 96 min |
| Nov 30, 9:29 PM EST | Mesoscale Discussion | SPC | 91 min |
| Nov 30, 9:56 PM EST | Tornado Watch | SPC | 6 hr |
| Dec 1, 12:13 AM EST | Special Weather Statement | GSP | 47 min |
| Dec 12, 5:53 AM EST | Lake Wind Advisory | GSP | 46 hr |
| Dec 15, 2:56 PM EST | Winter Weather Advisory | GSP | 21 hr |
| Dec 25, 4:37 AM EST | Winter Storm Warning | GSP | 61 hr |
| Dec 25, 4:37 AM EST | Winter Weather Advisory | GSP | 55 hr |
| Dec 25, 11:31 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Dec 27, 3:07 PM EST | Winter Weather Advisory | GSP | 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 | 21 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 10 |
| Mesoscale Discussion | 29 |
| Special Weather Statement | 26 |
| Flooding | |
| Areal Flood Warning | 5 |
| Flash Flood Warning | 4 |
| Flash Flood Watch | 3 |
| Flood Watch | 2 |
| Areal Flood Advisory | 11 |
| Winter | |
| Winter Storm Warning | 4 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 7 |
| Heat | |
| Heat Advisory | 6 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Frost Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Lake Wind Advisory | 8 |
| Wind Advisory | 2 |
| 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.