Alert archive / North Carolina / Rowan County
Weather alerts in Rowan County, North Carolina, 2012
163 weather alerts in 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Rowan County and its neighbors
Each county as a circle sized by its count in 2012. Tap one for its archive.
- Alerts
- 163
- Warnings
- 44
- Watches
- 14
- Advisories
- 32
- Busiest month
- July34 alerts
- Busiest day
- March 24, 20127 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Rowan County, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 36 | 22 | 39% | 15 | 100% | 22 min |
| Flash flood warnings | 1 | 1 | 0% | 1 | 100% | 17 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 11, 5:55 PM EST | Mesoscale Discussion | SPC | 35 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 23, 5:46 PM EST | Dense Fog Advisory | GSP | 3 hr |
| Jan 24, 1:20 AM EST | Dense Fog Advisory | GSP | 10 hr |
| Feb 11, 4:10 AM EST | Lake Wind Advisory | GSP | 26 hr |
| Feb 16, 10:23 PM EST | Dense Fog Advisory | GSP | 10 hr |
| Feb 19, 4:40 AM EST | Winter Weather Advisory | GSP | 22 hr |
| Feb 23, 2:38 PM EST | Wind Advisory | GSP | 51 hr |
| Feb 24, 9:17 AM EST | Tornado Watch | SPC | 7 hr |
| Feb 24, 12:47 PM EST | Special Weather Statement | GSP | 43 min |
| Feb 24, 1:35 PM EST | Special Weather Statement | GSP | 40 min |
| Feb 24, 2:41 PM EST | Fire Weather Watch | GSP | 15 hr |
| Feb 24, 2:59 PM EST | Severe Thunderstorm Warning | GSP | 61 min |
| Feb 24, 3:57 PM EST | Special Weather Statement | GSP | 48 min |
| Feb 25, 3:31 AM EST | Red Flag Warning | GSP | 16 hr |
| Feb 25, 3:50 AM EST | Lake Wind Advisory | GSP | 14 hr |
| Feb 28, 12:49 AM EST | Dense Fog Advisory | GSP | 9 hr |
| Mar 2, 11:23 AM EST | Severe Thunderstorm Warning | GSP | 24 min |
| 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 20, 7:45 PM EDT | Special Weather Statement | GSP | 45 min |
| Mar 20, 8:05 PM EDT | Severe Thunderstorm Warning | GSP | 55 min |
| Mar 20, 9:09 PM EDT | Special Weather Statement | GSP | 51 min |
| Mar 21, 1:22 PM EDT | Mesoscale Discussion | SPC | 113 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, 4:16 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Mar 24, 4:20 PM EDT | Severe Thunderstorm Warning | GSP | 55 min |
| Mar 24, 5:20 PM EDT | Special Weather Statement | GSP | 40 min |
| Mar 24, 5:21 PM EDT | Severe Thunderstorm Warning | GSP | 43 min |
| Mar 24, 6:06 PM EDT | Special Weather Statement | GSP | 24 min |
| Mar 25, 3:48 AM EDT | Severe Thunderstorm Warning | GSP | 57 min |
| Mar 25, 4:37 AM EDT | Severe Thunderstorm Warning | GSP | 68 min |
| Apr 3, 8:10 PM EDT | Special Weather Statement | GSP | 50 min |
| Apr 3, 9:00 PM EDT | Special Weather Statement | GSP | 45 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 18, 12:06 AM EDT | Special Weather Statement | GSP | 39 min |
| Apr 26, 8:47 AM EDT | Mesoscale Discussion | SPC | 88 min |
| Apr 26, 10:09 AM EDT | Special Weather Statement | GSP | 51 min |
| May 1, 3:12 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| 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, 8:38 PM EDT | Areal Flood Advisory | GSP | 112 min |
| 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 16, 2:36 AM EDT | Special Weather Statement | GSP | 39 min |
| May 22, 5:30 PM EDT | Special Weather Statement | GSP | 45 min |
| May 22, 5:55 PM EDT | Special Weather Statement | GSP | 50 min |
| May 22, 6:04 PM EDT | Severe Thunderstorm Warning | GSP | 56 min |
| May 22, 7:02 PM EDT | Special Weather Statement | GSP | 58 min |
| May 22, 7:08 PM EDT | Severe Thunderstorm Warning | GSP | 52 min |
| May 28, 5:53 PM EDT | Special Weather Statement | GSP | 52 min |
| Jun 1, 1:25 PM EDT | Special Weather Statement | GSP | 50 min |
| Jun 1, 2:29 PM EDT | Special Weather Statement | GSP | 46 min |
| Jun 1, 2:31 PM EDT | Severe Thunderstorm Warning | GSP | 29 min |
| Jun 1, 2:58 PM EDT | Special Weather Statement | GSP | 47 min |
| Jun 1, 4:51 PM EDT | Special Weather Statement | GSP | 24 min |
| Jun 1, 7:38 PM EDT | Special Weather Statement | GSP | 37 min |
| Jun 12, 8:38 PM EDT | Severe Thunderstorm Warning | GSP | 52 min |
| Jun 12, 9:27 PM EDT | Severe Thunderstorm Warning | GSP | 63 min |
| Jun 22, 3:34 PM EDT | Severe Thunderstorm Warning | GSP | 56 min |
| Jun 24, 12:53 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 24, 4:07 PM EDT | Severe Thunderstorm Warning | GSP | 53 min |
| Jun 28, 2:31 PM EDT | Heat Advisory | GSP | 29 hr |
| Jun 29, 2:49 PM EDT | Excessive Heat Warning | GSP | 29 hr |
| Jun 29, 2:49 PM EDT | Heat Advisory | GSP | 29 hr |
| Jun 29, 10:24 PM EDT | Special Weather Statement | GSP | 51 min |
| Jun 30, 2:44 PM EDT | Heat Advisory | GSP | 29 hr |
| Jul 1, 1:26 AM EDT | Severe Thunderstorm Warning | GSP | 19 min |
| Jul 1, 1:39 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 1, 2:01 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 2, 12:39 AM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 2, 12:57 AM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jul 3, 6:23 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 4, 3:54 PM EDT | Special Weather Statement | GSP | 36 min |
| Jul 5, 1:37 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 6, 4:43 PM EDT | Severe Thunderstorm Warning | GSP | 27 min |
| Jul 10, 12:23 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 18, 5:20 PM EDT | Special Weather Statement | GSP | 25 min |
| Jul 18, 5:37 PM EDT | Severe Thunderstorm Warning | GSP | 53 min |
| Jul 18, 5:53 PM EDT | Flash Flood Warning | GSP | 2 hr |
| Jul 18, 6:29 PM EDT | Severe Thunderstorm Warning | GSP | 50 min |
| Jul 20, 2:47 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 20, 5:17 PM EDT | Special Weather Statement | GSP | 28 min |
| Jul 20, 5:39 PM EDT | Special Weather Statement | GSP | 36 min |
| Jul 20, 5:42 PM EDT | Severe Thunderstorm Warning | GSP | 48 min |
| Jul 20, 6:37 PM EDT | Special Weather Statement | GSP | 53 min |
| Jul 21, 2:17 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 22, 2:20 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 12:58 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 23, 4:19 PM EDT | Special Weather Statement | GSP | 26 min |
| 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, 3:11 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 25, 4:31 PM EDT | Severe Thunderstorm Warning | GSP | 59 min |
| Jul 27, 4:39 PM EDT | Severe Thunderstorm Warning | GSP | 66 min |
| Jul 27, 5:03 PM EDT | Severe Thunderstorm Warning | GSP | 57 min |
| Jul 27, 5:43 PM EDT | Severe Thunderstorm Warning | GSP | 62 min |
| Jul 27, 6:17 PM EDT | Severe Thunderstorm Warning | GSP | 58 min |
| Jul 27, 6:36 PM EDT | Special Weather Statement | GSP | 39 min |
| Jul 28, 2:18 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 28, 7:08 PM EDT | Severe Thunderstorm Warning | GSP | 35 min |
| Aug 2, 1:54 AM EDT | Severe Thunderstorm Warning | GSP | 66 min |
| Aug 2, 2:48 AM EDT | Special Weather Statement | GSP | 72 min |
| Aug 3, 6:06 PM EDT | Severe Thunderstorm Warning | GSP | 30 min |
| Aug 3, 7:10 PM EDT | Severe Thunderstorm Warning | GSP | 51 min |
| Aug 3, 7:38 PM EDT | Severe Thunderstorm Warning | GSP | 36 min |
| Aug 5, 7:26 PM EDT | Special Weather Statement | GSP | 49 min |
| Aug 8, 2:30 PM EDT | Severe Thunderstorm Warning | GSP | 45 min |
| Aug 19, 1:58 AM EDT | Special Weather Statement | GSP | 47 min |
| Aug 22, 6:46 PM EDT | Areal Flood Advisory | GSP | 74 min |
| Aug 30, 4:09 PM EDT | Severe Thunderstorm Warning | GSP | 48 min |
| Sep 2, 6:02 PM EDT | Special Weather Statement | GSP | 43 min |
| Sep 3, 1:52 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Sep 3, 2:43 PM EDT | Special Weather Statement | GSP | 47 min |
| Sep 3, 4:51 PM EDT | Severe Thunderstorm Warning | GSP | 39 min |
| Sep 3, 6:11 PM EDT | Areal Flood Advisory | GSP | 109 min |
| Sep 8, 1:14 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 8, 1:48 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 8, 3:01 PM EDT | Special Weather Statement | GSP | 59 min |
| Sep 8, 3:25 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Sep 8, 4:03 PM EDT | Special Weather Statement | GSP | 42 min |
| Sep 18, 12:23 AM EDT | Mesoscale Discussion | SPC | 97 min |
| Sep 18, 8:49 AM EDT | Mesoscale Discussion | SPC | 116 min |
| Sep 18, 12:41 PM EDT | Special Weather Statement | GSP | 64 min |
| Sep 18, 1:08 PM EDT | Severe Thunderstorm Warning | GSP | 42 min |
| Sep 22, 8:20 PM EDT | Special Weather Statement | GSP | 40 min |
| Sep 28, 2:36 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Sep 28, 3:20 PM EDT | Severe Thunderstorm Warning | GSP | 55 min |
| Sep 28, 4:13 PM EDT | Special Weather Statement | GSP | 32 min |
| Sep 29, 2:30 PM EDT | Special Weather Statement | GSP | 45 min |
| Sep 29, 2:57 PM EDT | Severe Thunderstorm Warning | GSP | 63 min |
| Sep 30, 5:42 AM EDT | Dense Fog Advisory | GSP | 3 hr |
| Oct 15, 8:55 AM EDT | Special Weather Statement | GSP | 50 min |
| Oct 15, 9:34 AM EDT | Special Weather Statement | GSP | 41 min |
| Oct 18, 8:26 PM EDT | Severe Thunderstorm Warning | GSP | 18 min |
| Oct 18, 8:55 PM EDT | Mesoscale Discussion | SPC | 2 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 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 |
| Dec 26, 8:36 AM EST | Special Weather Statement | GSP | 54 min |
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 | 36 |
| Severe Thunderstorm Watch | 8 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 30 |
| Special Weather Statement | 43 |
| Flooding | |
| Flash Flood Warning | 1 |
| Flash Flood Watch | 2 |
| Areal Flood Advisory | 3 |
| Winter | |
| Winter Weather Advisory | 1 |
| Heat | |
| Excessive Heat Warning | 1 |
| Heat Advisory | 3 |
| Cold | |
| Freeze Warning | 3 |
| Freeze Watch | 1 |
| Frost Advisory | 5 |
| Wind and dust | |
| Lake Wind Advisory | 6 |
| Wind Advisory | 5 |
| Fire | |
| Red Flag Warning | 3 |
| Fire Weather Watch | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 9 |
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.