Alert archive / North Carolina / Alexander County
Weather alerts in Alexander County, North Carolina, 2012
153 weather alerts in 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Alexander County and its neighbors
Each county as a circle sized by its count in 2012. Tap one for its archive.
- Alerts
- 153
- Warnings
- 30
- Watches
- 17
- Advisories
- 32
- Busiest month
- July39 alerts
- Busiest day
- February 24, 20128 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 Alexander County in 2012 had a tornado report inside them.
Alexander County, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 19 | 12 | 37% | 3 | 67% | 30 min |
| Flash flood warnings | 2 | 2 | 0% | 2 | 100% | 47 min |
Each office's whole area, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Greenville-Spartanburg, SC: tornado warnings | 15 | 0 | 100% | 1 | 0% | |
| NWS Greenville-Spartanburg, SC: severe thunderstorm warnings | 581 | 410 | 29% | 722 | 89% | 23 min |
| NWS Greenville-Spartanburg, SC: flash flood warnings | 33 | 19 | 42% | 47 | 79% | 46 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 1, 10:36 AM EST | Lake Wind Advisory | GSP | 55 hr |
| Jan 9, 9:58 PM EST | Dense Fog Advisory | GSP | 11 hr |
| Jan 10, 2:44 PM EST | Flood Watch | GSP | 29 hr |
| Jan 11, 5:55 PM EST | Mesoscale Discussion | SPC | 35 min |
| Jan 11, 6:05 PM EST | Tornado Warning | GSP | 40 min |
| Jan 11, 6:44 PM EST | Special Weather Statement | GSP | 46 min |
| Jan 12, 4:11 AM EST | Lake Wind Advisory | GSP | 17 hr |
| Jan 12, 9:18 PM EST | Wind Advisory | GSP | 6 hr |
| Jan 13, 3:37 AM EST | Lake Wind Advisory | GSP | 6 hr |
| Jan 24, 1:20 AM EST | Dense Fog Advisory | GSP | 10 hr |
| Feb 5, 7:56 AM EST | Dense Fog Advisory | GSP | 3 hr |
| Feb 11, 4:10 AM EST | Lake Wind Advisory | GSP | 26 hr |
| Feb 15, 4:34 AM EST | Dense Fog Advisory | GSP | 4 hr |
| Feb 16, 10:23 PM EST | Dense Fog Advisory | GSP | 10 hr |
| Feb 18, 3:03 PM EST | Winter Storm Warning | GSP | 36 hr |
| Feb 19, 4:40 AM EST | Winter Weather Advisory | GSP | 22 hr |
| Feb 22, 10:34 PM EST | Special Weather Statement | GSP | 41 min |
| Feb 23, 2:38 PM EST | Wind Advisory | GSP | 51 hr |
| Feb 24, 9:05 AM EST | Mesoscale Discussion | SPC | 25 min |
| Feb 24, 9:17 AM EST | Tornado Watch | SPC | 7 hr |
| Feb 24, 12:00 PM EST | Mesoscale Discussion | SPC | 60 min |
| Feb 24, 12:47 PM EST | Special Weather Statement | GSP | 43 min |
| Feb 24, 2:20 PM EST | Special Weather Statement | GSP | 40 min |
| Feb 24, 2:27 PM EST | Severe Thunderstorm Warning | GSP | 28 min |
| Feb 24, 2:41 PM EST | Fire Weather Watch | GSP | 15 hr |
| Feb 24, 3:24 PM EST | Mesoscale Discussion | SPC | 66 min |
| Feb 25, 3:31 AM EST | Red Flag Warning | GSP | 16 hr |
| Feb 28, 12:49 AM EST | Dense Fog Advisory | GSP | 9 hr |
| Mar 1, 12:20 AM EST | Mesoscale Discussion | SPC | 85 min |
| Mar 2, 10:49 AM EST | Special Weather Statement | GSP | 41 min |
| Mar 2, 10:54 PM EST | Tornado Watch | SPC | 6 hr |
| Mar 4, 7:52 PM EST | Lake Wind Advisory | GSP | 22 hr |
| Mar 10, 2:04 AM EST | Freeze Warning | GSP | 31 hr |
| Mar 14, 3:30 AM EDT | Dense Fog Advisory | GSP | 6 hr |
| Mar 19, 5:59 AM EDT | Dense Fog Advisory | GSP | 3 hr |
| Mar 20, 3:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Mar 21, 1:22 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Mar 23, 4:24 PM EDT | Special Weather Statement | GSP | 36 min |
| Mar 23, 6:59 PM EDT | Special Weather Statement | GSP | 46 min |
| Mar 24, 12:03 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Mar 24, 12:46 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Mar 24, 2:31 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Mar 24, 6:58 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Apr 4, 1:31 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Apr 6, 5:33 AM EDT | Frost Advisory | GSP | 28 hr |
| Apr 9, 11:10 AM EDT | Fire Weather Watch | GSP | 16 hr |
| Apr 9, 11:10 AM EDT | Red Flag Warning | GSP | 9 hr |
| Apr 10, 3:15 AM EDT | Red Flag Warning | GSP | 17 hr |
| Apr 10, 3:11 PM EDT | Freeze Watch | GSP | 20 hr |
| Apr 11, 11:06 AM EDT | Freeze Warning | GSP | 22 hr |
| Apr 12, 2:49 PM EDT | Frost Advisory | GSP | 18 hr |
| Apr 26, 7:24 AM EDT | Mesoscale Discussion | SPC | 96 min |
| Apr 26, 8:10 AM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Apr 26, 8:47 AM EDT | Mesoscale Discussion | SPC | 88 min |
| Apr 26, 9:26 AM EDT | Special Weather Statement | GSP | 64 min |
| May 1, 12:43 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 1, 3:12 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 9, 1:22 PM EDT | Areal Flood Advisory | GSP | 98 min |
| May 14, 5:23 PM EDT | Flash Flood Watch | GSP | 10 hr |
| May 14, 6:14 PM EDT | Mesoscale Discussion | SPC | 61 min |
| May 14, 6:31 PM EDT | Flash Flood Warning | GSP | 3 hr |
| May 14, 9:44 PM EDT | Areal Flood Warning | GSP | 4 hr |
| May 15, 10:54 AM EDT | Flash Flood Watch | GSP | 17 hr |
| May 15, 2:08 PM EDT | Mesoscale Discussion | SPC | 67 min |
| May 15, 3:13 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 15, 6:30 PM EDT | Mesoscale Discussion | SPC | 90 min |
| May 15, 8:42 PM EDT | Mesoscale Discussion | SPC | 63 min |
| May 22, 5:25 PM EDT | Severe Thunderstorm Warning | GSP | 65 min |
| May 23, 6:09 PM EDT | Special Weather Statement | GSP | 66 min |
| May 31, 6:28 PM EDT | Severe Thunderstorm Warning | GSP | 22 min |
| Jun 12, 8:26 PM EDT | Special Weather Statement | GSP | 49 min |
| Jun 22, 1:51 PM EDT | Special Weather Statement | GSP | 39 min |
| Jun 24, 12:53 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 29, 2:49 PM EDT | Heat Advisory | GSP | 29 hr |
| Jun 29, 9:58 PM EDT | Special Weather Statement | GSP | 62 min |
| Jun 29, 10:24 PM EDT | Special Weather Statement | GSP | 51 min |
| Jun 30, 2:44 PM EDT | Heat Advisory | GSP | 29 hr |
| Jun 30, 6:08 PM EDT | Severe Thunderstorm Warning | GSP | 67 min |
| Jul 1, 11:38 AM EDT | Mesoscale Discussion | SPC | 97 min |
| Jul 1, 1:39 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 1, 4:41 PM EDT | Severe Thunderstorm Warning | GSP | 64 min |
| Jul 1, 5:25 PM EDT | Severe Thunderstorm Warning | GSP | 28 min |
| Jul 2, 12:39 AM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 2, 12:57 AM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jul 2, 1:13 AM EDT | Severe Thunderstorm Warning | GSP | 62 min |
| Jul 3, 3:19 PM EDT | Severe Thunderstorm Warning | GSP | 56 min |
| Jul 3, 4:31 PM EDT | Special Weather Statement | GSP | 44 min |
| Jul 3, 6:23 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 4, 5:19 PM EDT | Special Weather Statement | GSP | 41 min |
| Jul 5, 1:17 PM EDT | Severe Thunderstorm Warning | GSP | 53 min |
| Jul 5, 1:37 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 5, 2:57 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 9, 1:01 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Jul 18, 3:30 PM EDT | Special Weather Statement | GSP | 45 min |
| Jul 18, 3:39 PM EDT | Severe Thunderstorm Warning | GSP | 36 min |
| Jul 19, 6:15 PM EDT | Special Weather Statement | GSP | 30 min |
| Jul 19, 7:04 PM EDT | Special Weather Statement | GSP | 26 min |
| Jul 19, 8:24 PM EDT | Special Weather Statement | GSP | 51 min |
| Jul 19, 9:27 PM EDT | Special Weather Statement | GSP | 63 min |
| Jul 19, 9:55 PM EDT | Special Weather Statement | GSP | 65 min |
| Jul 20, 2:47 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 21, 2:17 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 21, 6:14 PM EDT | Severe Thunderstorm Warning | GSP | 61 min |
| Jul 21, 6:26 PM EDT | Areal Flood Advisory | GSP | 2 hr |
| Jul 21, 6:36 PM EDT | Flash Flood Warning | GSP | 105 min |
| Jul 22, 1:54 PM EDT | Severe Thunderstorm Warning | GSP | 51 min |
| Jul 22, 2:20 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 22, 2:42 PM EDT | Special Weather Statement | GSP | 48 min |
| Jul 23, 12:58 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 24, 1:12 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Jul 24, 2:36 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 25, 2:32 AM EDT | Mesoscale Discussion | SPC | 58 min |
| Jul 25, 3:11 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 25, 5:34 PM EDT | Severe Thunderstorm Warning | GSP | 42 min |
| Jul 27, 4:31 PM EDT | Special Weather Statement | GSP | 44 min |
| Jul 27, 4:53 PM EDT | Severe Thunderstorm Warning | GSP | 48 min |
| Jul 28, 5:16 PM EDT | Special Weather Statement | GSP | 44 min |
| Aug 2, 1:15 AM EDT | Special Weather Statement | GSP | 45 min |
| Aug 2, 1:25 AM EDT | Severe Thunderstorm Warning | GSP | 65 min |
| Aug 2, 2:12 AM EDT | Areal Flood Advisory | GSP | 80 min |
| Aug 7, 10:35 PM EDT | Special Weather Statement | GSP | 40 min |
| Aug 8, 12:50 PM EDT | Severe Thunderstorm Warning | GSP | 40 min |
| Aug 9, 8:17 PM EDT | Special Weather Statement | GSP | 28 min |
| Aug 11, 3:14 PM EDT | Special Weather Statement | GSP | 31 min |
| Aug 11, 3:21 PM EDT | Severe Thunderstorm Warning | GSP | 37 min |
| Aug 17, 2:45 PM EDT | Special Weather Statement | GSP | 45 min |
| Aug 30, 4:54 PM EDT | Special Weather Statement | GSP | 51 min |
| Aug 30, 5:03 PM EDT | Severe Thunderstorm Warning | GSP | 27 min |
| Sep 1, 3:24 PM EDT | Special Weather Statement | GSP | 51 min |
| Sep 2, 4:20 PM EDT | Special Weather Statement | GSP | 40 min |
| Sep 3, 4:19 PM EDT | Special Weather Statement | GSP | 56 min |
| Sep 8, 12:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Sep 8, 1:48 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 8, 3:25 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Sep 18, 12:23 AM EDT | Mesoscale Discussion | SPC | 97 min |
| Sep 18, 10:32 AM EDT | Special Weather Statement | GSP | 43 min |
| Sep 18, 11:48 AM EDT | Special Weather Statement | GSP | 42 min |
| Sep 28, 1:45 PM EDT | Special Weather Statement | RNK | 30 min |
| Sep 28, 2:29 PM EDT | Severe Thunderstorm Warning | GSP | 61 min |
| Sep 28, 2:36 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Sep 28, 3:11 PM EDT | Special Weather Statement | GSP | 49 min |
| Sep 29, 1:43 PM EDT | Special Weather Statement | GSP | 47 min |
| Sep 30, 5:42 AM EDT | Dense Fog Advisory | GSP | 3 hr |
| Oct 28, 5:21 AM EDT | High Wind Watch | GSP | 11 hr |
| Oct 28, 3:52 PM EDT | Wind Advisory | GSP | 43 hr |
| Oct 31, 4:21 AM EDT | Frost Advisory | GSP | 29 hr |
| Nov 1, 4:09 AM EDT | Frost Advisory | GSP | 29 hr |
| Nov 2, 2:46 PM EDT | Frost Advisory | GSP | 18 hr |
| Nov 6, 8:47 PM EST | Freeze Warning | GSP | 11 hr |
| Dec 8, 2:30 AM EST | Dense Fog Advisory | GSP | 8 hr |
| Dec 20, 3:44 AM EST | Wind Advisory | GSP | 56 hr |
| Dec 24, 7:15 PM EST | Dense Fog Advisory | GSP | 15 hr |
| Dec 25, 3:04 PM EST | Wind Advisory | GSP | 27 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 | 19 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 8 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 36 |
| Special Weather Statement | 38 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Warning | 2 |
| Flash Flood Watch | 2 |
| Flood Watch | 1 |
| Areal Flood Advisory | 3 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Weather Advisory | 1 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 3 |
| Freeze Watch | 1 |
| Frost Advisory | 5 |
| Wind and dust | |
| High Wind Watch | 1 |
| Lake Wind Advisory | 5 |
| Wind Advisory | 5 |
| Fire | |
| Red Flag Warning | 3 |
| Fire Weather Watch | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 11 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20112013
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.