Alert archive / North Carolina / Swain County
Weather alerts in Swain County, North Carolina, 2015
119 weather alerts in 2015, 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 2015. Tap one for its archive.
- Alerts
- 119
- Warnings
- 19
- Watches
- 19
- Advisories
- 45
- Busiest month
- February29 alerts
- Busiest day
- July 14, 20158 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Swain County, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 3 | 3 | 0% | 4 | 75% | 24 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Greenville-Spartanburg, SC: tornado warnings | 4 | 0 | 100% | 2 | 0% | |
| NWS Greenville-Spartanburg, SC: severe thunderstorm warnings | 263 | 207 | 21% | 515 | 85% | 22 min |
| NWS Greenville-Spartanburg, SC: flash flood warnings | 63 | 43 | 32% | 144 | 76% | 131 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 6, 2:57 PM EST | Wind Chill Advisory | GSP | 45 hr |
| Jan 18, 6:05 AM EST | Freezing Rain Advisory | GSP | 4 hr |
| Jan 22, 3:21 PM EST | Winter Weather Advisory | GSP | 45 hr |
| Jan 25, 2:56 PM EST | Winter Weather Advisory | GSP | 51 hr |
| Jan 31, 3:25 PM EST | Wind Advisory | GSP | 38 hr |
| Feb 1, 3:58 PM EST | Winter Weather Advisory | GSP | 42 hr |
| Feb 11, 2:54 PM EST | Winter Weather Advisory | GSP | 33 hr |
| Feb 11, 2:57 PM EST | Wind Advisory | GSP | 33 hr |
| Feb 12, 4:46 AM EST | Wind Chill Advisory | GSP | 28 hr |
| Feb 13, 5:14 AM EST | Wind Chill Watch | GSP | 23 hr |
| Feb 13, 9:21 PM EST | Wind Advisory | GSP | 36 hr |
| Feb 14, 4:33 AM EST | Wind Chill Warning | GSP | 30 hr |
| Feb 14, 4:33 AM EST | Winter Weather Advisory | GSP | 23 hr |
| Feb 14, 4:51 PM EST | Winter Storm Watch | GSP | 23 hr |
| Feb 15, 10:20 AM EST | Wind Chill Advisory | GSP | 100 min |
| Feb 15, 3:22 PM EST | Winter Storm Warning | GSP | 37 hr |
| Feb 16, 12:05 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 17, 4:24 PM EST | Wind Chill Watch | GSP | 13 hr |
| Feb 17, 4:24 PM EST | Winter Weather Advisory | GSP | 39 hr |
| Feb 18, 4:55 AM EST | Wind Chill Warning | GSP | 53 hr |
| Feb 18, 4:55 AM EST | Wind Chill Advisory | GSP | 53 hr |
| Feb 19, 1:06 PM EST | Wind Chill Warning | GSP | 21 hr |
| Feb 19, 3:47 PM EST | Winter Storm Watch | GSP | 13 hr |
| Feb 20, 4:54 AM EST | Winter Weather Advisory | GSP | 43 hr |
| Feb 22, 3:01 PM EST | Winter Weather Advisory | GSP | 19 hr |
| Feb 23, 3:24 PM EST | Winter Weather Advisory | GSP | 21 hr |
| Feb 24, 3:48 AM EST | Winter Storm Warning | GSP | 8 hr |
| Feb 24, 4:39 AM EST | Winter Storm Watch | GSP | 24 hr |
| Feb 24, 3:43 PM EST | Winter Storm Warning | GSP | 38 hr |
| Feb 24, 4:15 PM EST | Winter Weather Advisory | GSP | 18 hr |
| Feb 25, 4:10 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 26, 3:51 AM EST | Winter Weather Advisory | GSP | 8 hr |
| Feb 26, 2:52 PM EST | Winter Weather Advisory | GSP | 21 hr |
| Feb 28, 3:35 PM EST | Freezing Rain Advisory | GSP | 19 hr |
| Mar 4, 2:49 PM EST | Winter Weather Advisory | GSP | 27 hr |
| Mar 5, 9:30 PM EST | Winter Weather Advisory | GSP | 15 hr |
| Mar 27, 4:36 AM EDT | Freeze Warning | GSP | 31 hr |
| Mar 27, 2:30 PM EDT | Freeze Watch | GSP | 12 hr |
| Mar 28, 2:00 AM EDT | Freeze Warning | GSP | 33 hr |
| Mar 30, 2:57 PM EDT | Frost Advisory | GSP | 18 hr |
| Apr 3, 4:13 PM EDT | Fire Weather Watch | GSP | 15 hr |
| Apr 4, 3:53 AM EDT | Freeze Warning | GSP | 29 hr |
| Apr 8, 1:42 AM EDT | Dense Fog Advisory | GSP | 8 hr |
| Apr 10, 6:45 AM EDT | Special Weather Statement | GSP | 90 min |
| Apr 13, 3:10 PM EDT | Flash Flood Watch | GSP | 19 hr |
| Apr 19, 9:28 PM EDT | Special Weather Statement | GSP | 32 min |
| Apr 23, 3:47 AM EDT | Freeze Warning | GSP | 29 hr |
| Apr 27, 2:45 PM EDT | Frost Advisory | GSP | 18 hr |
| Apr 30, 5:08 PM EDT | Special Weather Statement | GSP | 37 min |
| Apr 30, 5:43 PM EDT | Special Weather Statement | GSP | 32 min |
| Apr 30, 11:01 PM EDT | Special Weather Statement | GSP | 44 min |
| May 7, 4:44 PM EDT | Special Weather Statement | GSP | 31 min |
| May 9, 3:54 PM EDT | Special Weather Statement | GSP | 36 min |
| May 11, 3:24 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| May 18, 8:55 PM EDT | Special Weather Statement | GSP | 35 min |
| Jun 2, 12:46 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 2, 6:55 PM EDT | Special Weather Statement | GSP | 65 min |
| Jun 8, 6:24 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jun 26, 5:48 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 30, 7:16 AM EDT | Special Weather Statement | GSP | 29 min |
| Jun 30, 12:55 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 30, 1:37 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 30, 4:33 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jun 30, 7:08 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Jul 1, 6:20 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Jul 2, 7:37 AM EDT | Special Weather Statement | GSP | 83 min |
| Jul 2, 8:54 AM EDT | Special Weather Statement | GSP | 81 min |
| Jul 2, 10:14 AM EDT | Special Weather Statement | GSP | 106 min |
| Jul 3, 2:53 PM EDT | Flash Flood Watch | GSP | 53 hr |
| Jul 13, 6:55 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 14, 9:30 AM EDT | Special Weather Statement | GSP | 30 min |
| Jul 14, 10:34 AM EDT | Severe Thunderstorm Warning | GSP | 56 min |
| Jul 14, 1:14 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Jul 14, 3:41 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Jul 14, 4:20 PM EDT | Special Weather Statement | GSP | 55 min |
| Jul 14, 4:45 PM EDT | Severe Thunderstorm Warning | GSP | 75 min |
| Jul 14, 4:59 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 14, 6:24 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 18, 2:05 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Aug 10, 4:32 PM EDT | Special Weather Statement | GSP | 43 min |
| Sep 5, 1:05 PM EDT | Special Weather Statement | GSP | 25 min |
| Sep 5, 2:15 PM EDT | Severe Thunderstorm Warning | GSP | 45 min |
| Oct 1, 4:18 AM EDT | Flash Flood Watch | GSP | 4 days |
| Oct 1, 4:18 PM EDT | Areal Flood Advisory | GSP | 117 min |
| Oct 2, 3:24 PM EDT | Wind Advisory | GSP | 3 days |
| Oct 3, 10:17 AM EDT | River Flood Warning | GSP | 46 hr |
| Oct 9, 8:10 PM EDT | Special Weather Statement | GSP | 50 min |
| Oct 16, 4:00 AM EDT | Freeze Watch | GSP | 24 hr |
| Oct 16, 2:29 PM EDT | Frost Advisory | GSP | 20 hr |
| Oct 17, 3:33 AM EDT | Freeze Warning | GSP | 29 hr |
| Oct 26, 2:54 PM EDT | High Wind Watch | GSP | 13 hr |
| Oct 27, 3:55 AM EDT | Wind Advisory | GSP | 30 hr |
| Nov 12, 3:00 AM EST | Wind Advisory | GSP | 51 hr |
| Nov 17, 3:45 AM EST | Wind Advisory | GSP | 38 hr |
| Nov 17, 2:52 PM EST | Flash Flood Watch | GSP | 43 hr |
| Nov 18, 4:11 PM EST | Special Weather Statement | MRX | 64 min |
| Nov 18, 4:45 PM EST | Special Weather Statement | GSP | 90 min |
| Nov 30, 3:12 PM EST | Flood Watch | GSP | 47 hr |
| Dec 2, 12:30 AM EST | Areal Flood Advisory | GSP | 3 hr |
| Dec 2, 3:37 AM EST | Areal Flood Advisory | GSP | 4 hr |
| Dec 2, 3:41 AM EST | River Flood Advisory | GSP | 12 hr |
| Dec 2, 7:19 AM EST | River Flood Warning | GSP | 31 hr |
| Dec 2, 9:31 AM EST | Areal Flood Advisory | GSP | 3 hr |
| Dec 2, 12:22 PM EST | Areal Flood Advisory | GSP | 3 hr |
| Dec 13, 3:16 AM EST | Wind Advisory | GSP | 40 hr |
| Dec 22, 2:53 PM EST | Flash Flood Watch | GSP | 4 days |
| Dec 22, 5:41 PM EST | Dense Fog Advisory | GSP | 19 hr |
| Dec 23, 1:08 PM EST | Wind Advisory | GSP | 14 hr |
| Dec 24, 4:57 AM EST | Special Weather Statement | GSP | 33 min |
| Dec 24, 10:21 AM EST | River Flood Warning | GSP | 33 hr |
| Dec 24, 2:43 PM EST | Areal Flood Warning | GSP | 3 hr |
| Dec 24, 5:42 PM EST | Areal Flood Advisory | GSP | 6 hr |
| Dec 24, 9:22 PM EST | River Flood Advisory | GSP | 36 hr |
| Dec 24, 10:05 PM EST | Areal Flood Warning | GSP | 3 hr |
| Dec 25, 1:14 AM EST | Areal Flood Advisory | GSP | 5 hr |
| Dec 25, 8:23 AM EST | Areal Flood Advisory | GSP | 4 hr |
| Dec 25, 12:41 PM EST | Special Weather Statement | GSP | 2 hr |
| Dec 28, 3:54 AM EST | Wind Advisory | GSP | 24 hr |
| Dec 28, 4:10 AM EST | Flood Watch | GSP | 71 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 archive20142016
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.