Alert archive / North Carolina / Swain County
Weather alerts in Swain County, North Carolina, 2012
139 weather alerts in 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Swain County and its neighbors
Each county as a circle sized by its count in 2012. Tap one for its archive.
- Alerts
- 139
- Warnings
- 35
- Watches
- 19
- Advisories
- 33
- Busiest month
- April31 alerts
- Busiest day
- April 26, 201210 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 3 tornado warnings covering Swain County in 2012 had a tornado report inside them.
Swain County, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 19 | 11 | 42% | 4 | 75% | 23 min |
| Flash flood warnings | 0 | 0 |
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 1, 3:30 PM EST | Wind Chill Advisory | GSP | 45 hr |
| Jan 1, 3:30 PM EST | Winter Weather Advisory | GSP | 45 hr |
| Jan 2, 5:55 AM EST | Lake Wind Advisory | GSP | 36 hr |
| Jan 3, 12:25 AM EST | Winter Storm Warning | GSP | 12 hr |
| Jan 9, 9:58 PM EST | Dense Fog Advisory | GSP | 11 hr |
| Jan 12, 4:04 AM EST | Winter Weather Advisory | GSP | 30 hr |
| Jan 14, 1:57 PM EST | Winter Weather Advisory | GSP | 17 hr |
| Jan 21, 7:44 AM EST | Severe Thunderstorm Warning | GSP | 61 min |
| 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 10, 1:34 PM EST | Winter Weather Advisory | GSP | 40 hr |
| Feb 11, 4:20 AM EST | Wind Chill Advisory | GSP | 30 hr |
| Feb 11, 4:20 AM EST | Winter Storm Warning | GSP | 26 hr |
| Feb 13, 4:15 AM EST | Winter Weather Advisory | GSP | 31 hr |
| Feb 15, 4:34 AM EST | Dense Fog Advisory | GSP | 4 hr |
| Feb 18, 3:03 PM EST | Winter Storm Warning | GSP | 36 hr |
| Feb 22, 9:22 PM EST | Special Weather Statement | GSP | 38 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, 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 29, 5:36 PM EST | Mesoscale Discussion | SPC | 54 min |
| Feb 29, 6:37 PM EST | Tornado Watch | SPC | 3 hr |
| Feb 29, 8:02 PM EST | Severe Thunderstorm Warning | GSP | 30 min |
| Mar 1, 12:20 AM EST | Mesoscale Discussion | SPC | 85 min |
| Mar 2, 12:46 PM EST | Mesoscale Discussion | SPC | 29 min |
| Mar 2, 1:38 PM EST | Tornado Warning | GSP | 52 min |
| Mar 2, 2:29 PM EST | Tornado Warning | GSP | 52 min |
| Mar 2, 2:58 PM EST | Mesoscale Discussion | SPC | 62 min |
| Mar 2, 3:19 PM EST | Tornado Watch | SPC | 8 hr |
| Mar 2, 7:00 PM EST | Special Weather Statement | GSP | 60 min |
| Mar 2, 8:15 PM EST | Mesoscale Discussion | SPC | 90 min |
| Mar 2, 9:28 PM EST | Tornado Warning | GSP | 27 min |
| Mar 2, 10:54 PM EST | Tornado Watch | SPC | 6 hr |
| Mar 4, 3:48 AM EST | Lake Wind Advisory | GSP | 16 hr |
| Mar 4, 2:47 PM EST | Winter Weather Advisory | GSP | 21 hr |
| Mar 4, 7:52 PM EST | Lake Wind Advisory | GSP | 22 hr |
| Mar 15, 9:27 AM EDT | Special Weather Statement | GSP | 48 min |
| Mar 15, 5:18 PM EDT | Special Weather Statement | GSP | 42 min |
| Mar 15, 7:23 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Mar 20, 2:21 PM EDT | Special Weather Statement | GSP | 39 min |
| Mar 29, 3:19 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Apr 1, 2:31 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Apr 1, 6:16 PM EDT | Severe Thunderstorm Warning | GSP | 38 min |
| Apr 2, 1:48 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Apr 3, 1:43 PM EDT | Severe Thunderstorm Warning | GSP | 62 min |
| Apr 3, 2:54 PM EDT | Special Weather Statement | GSP | 51 min |
| Apr 3, 5:09 PM EDT | Severe Thunderstorm Warning | GSP | 30 min |
| Apr 5, 1:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Apr 5, 1:47 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 5, 1:54 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Apr 5, 3:37 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Apr 5, 3:58 PM EDT | Severe Thunderstorm Warning | GSP | 24 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, 2:34 PM EDT | Freeze Watch | GSP | 13 hr |
| Apr 10, 3:27 AM EDT | Freeze Warning | GSP | 30 hr |
| Apr 10, 3:11 PM EDT | Freeze Watch | GSP | 20 hr |
| Apr 11, 11:06 AM EDT | Freeze Warning | GSP | 22 hr |
| Apr 11, 3:02 PM EDT | Freeze Watch | GSP | 24 hr |
| Apr 12, 2:49 PM EDT | Freeze Warning | GSP | 18 hr |
| Apr 22, 10:22 PM EDT | Wind Advisory | GSP | 23 hr |
| Apr 23, 5:08 AM EDT | Freeze Warning | GSP | 27 hr |
| Apr 26, 7:24 AM EDT | Mesoscale Discussion | SPC | 96 min |
| Apr 26, 7:49 AM EDT | Severe Thunderstorm Warning | GSP | 56 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, 4:17 PM EDT | Special Weather Statement | GSP | 43 min |
| Apr 26, 4:22 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Apr 26, 4:35 PM EDT | Severe Thunderstorm Warning | GSP | 70 min |
| Apr 26, 4:59 PM EDT | Severe Thunderstorm Warning | GSP | 76 min |
| Apr 26, 5:16 PM EDT | Areal Flood Advisory | GSP | 6 hr |
| Apr 26, 5:16 PM EDT | Severe Thunderstorm Warning | GSP | 74 min |
| May 5, 7:19 AM EDT | Special Weather Statement | GSP | 56 min |
| May 5, 8:04 AM EDT | Special Weather Statement | GSP | 56 min |
| May 6, 4:46 PM EDT | Severe Thunderstorm Warning | GSP | 29 min |
| May 15, 5:16 PM EDT | Special Weather Statement | GSP | 29 min |
| Jun 1, 12:41 PM EDT | Special Weather Statement | GSP | 64 min |
| Jun 14, 6:47 PM EDT | Special Weather Statement | GSP | 43 min |
| Jun 22, 4:53 PM EDT | Special Weather Statement | GSP | 52 min |
| Jul 1, 9:38 PM EDT | Severe Thunderstorm Warning | GSP | 54 min |
| Jul 2, 12:19 AM EDT | Severe Thunderstorm Warning | GSP | 56 min |
| Jul 2, 12:21 AM EDT | Severe Thunderstorm Warning | GSP | 54 min |
| Jul 3, 6:23 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 4, 2:02 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Jul 5, 1:11 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Jul 5, 1:37 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 5, 5:23 PM EDT | Severe Thunderstorm Warning | GSP | 67 min |
| Jul 5, 6:10 PM EDT | Severe Thunderstorm Warning | GSP | 65 min |
| Jul 5, 6:43 PM EDT | Severe Thunderstorm Warning | GSP | 47 min |
| Jul 8, 2:22 PM EDT | Special Weather Statement | GSP | 38 min |
| Jul 9, 1:01 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Jul 9, 3:15 PM EDT | Special Weather Statement | GSP | 30 min |
| Jul 10, 12:23 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 17, 4:39 PM EDT | Severe Thunderstorm Warning | GSP | 39 min |
| Jul 18, 12:42 PM EDT | Areal Flood Advisory | GSP | 78 min |
| Jul 18, 1:09 PM EDT | Special Weather Statement | GSP | 36 min |
| Jul 19, 10:15 PM EDT | Special Weather Statement | GSP | 60 min |
| Jul 21, 3:12 PM EDT | Special Weather Statement | GSP | 33 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, 3:11 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 28, 3:33 AM EDT | Special Weather Statement | GSP | 57 min |
| Jul 28, 1:57 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 31, 9:06 PM EDT | Special Weather Statement | GSP | 39 min |
| Jul 31, 9:35 PM EDT | Special Weather Statement | GSP | 25 min |
| Aug 1, 2:52 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Aug 9, 1:16 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Aug 9, 2:49 PM EDT | Severe Thunderstorm Warning | GSP | 56 min |
| Sep 17, 11:46 AM EDT | Flood Watch | GSP | 30 hr |
| Sep 17, 6:39 PM EDT | Tornado Watch | SPC | 8 hr |
| Sep 17, 8:14 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 23, 2:00 PM EDT | Frost Advisory | GSP | 19 hr |
| Oct 10, 3:25 AM EDT | Frost Advisory | GSP | 30 hr |
| Oct 20, 2:47 PM EDT | Frost Advisory | GSP | 18 hr |
| Oct 21, 5:46 PM EDT | Frost Advisory | GSP | 15 hr |
| Oct 28, 4:46 AM EDT | Winter Storm Watch | GSP | 11 hr |
| Oct 28, 5:21 AM EDT | Freeze Warning | GSP | 28 hr |
| Oct 28, 5:21 AM EDT | High Wind Watch | GSP | 11 hr |
| Oct 28, 5:21 AM EDT | High Wind Warning | GSP | 53 hr |
| Oct 28, 3:36 PM EDT | Winter Storm Warning | GSP | 61 hr |
| Oct 29, 2:42 PM EDT | Freeze Warning | GSP | 20 hr |
| Oct 30, 1:02 PM EDT | Mesoscale Discussion | SPC | 5 hr |
| Oct 31, 4:09 AM EDT | Winter Weather Advisory | GSP | 8 hr |
| Nov 6, 2:56 PM EST | Winter Weather Advisory | GSP | 22 hr |
| Dec 19, 3:19 PM EST | High Wind Watch | GSP | 12 hr |
| Dec 20, 3:44 AM EST | Wind Advisory | GSP | 56 hr |
| Dec 24, 2:43 PM EST | High Wind Watch | GSP | 24 hr |
| Dec 24, 7:15 PM EST | Dense Fog Advisory | GSP | 15 hr |
| Dec 25, 3:04 PM EST | High Wind Warning | GSP | 21 hr |
| Dec 25, 3:04 PM EST | Wind Advisory | GSP | 27 hr |
| Dec 26, 4:11 AM EST | Winter Weather Advisory | GSP | 29 hr |
| Dec 26, 2:22 PM EST | Wind Advisory | GSP | 23 hr |
| Dec 29, 6:56 AM EST | Winter Weather Advisory | GSP | 23 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 | 3 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 5 |
| Mesoscale Discussion | 31 |
| Special Weather Statement | 21 |
| Flooding | |
| Flood Watch | 1 |
| Areal Flood Advisory | 2 |
| Winter | |
| Winter Storm Warning | 4 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 10 |
| Cold | |
| Freeze Warning | 6 |
| Freeze Watch | 3 |
| Frost Advisory | 5 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 2 |
| High Wind Watch | 3 |
| Lake Wind Advisory | 4 |
| Wind Advisory | 5 |
| Fire | |
| Red Flag Warning | 1 |
| Fire Weather Watch | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 5 |
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.