Alert archive / North Carolina / Alexander County
Weather alerts in Alexander County, North Carolina, 2023
109 weather alerts in 2023, 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 2023. Tap one for its archive.
- Alerts
- 109
- Warnings
- 27
- Watches
- 19
- Advisories
- 16
- Busiest month
- July23 alerts
- Busiest day
- July 29, 20236 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Alexander County, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 16 | 10 | 38% | 20 | 100% | 25 min |
| Flash flood warnings | 2 | 1 | 50% | 5 | 100% | 98 min |
Each office's whole area, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Greenville-Spartanburg, SC: tornado warnings | 14 | 3 | 79% | 11 | 27% | 2 min |
| NWS Greenville-Spartanburg, SC: severe thunderstorm warnings | 392 | 296 | 24% | 895 | 86% | 21 min |
| NWS Greenville-Spartanburg, SC: flash flood warnings | 20 | 10 | 50% | 28 | 93% | 93 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, 9:29 PM EST | Dense Fog Advisory | GSP | 14 hr |
| Jan 1, 9:38 PM EST | Dense Fog Advisory | GSP | 12 hr |
| Jan 9, 3:32 AM EST | Dense Fog Advisory | GSP | 6 hr |
| Jan 12, 4:37 PM EST | Severe Thunderstorm Warning | GSP | 38 min |
| Jan 12, 4:41 PM EST | Tornado Watch | SPC | 3 hr |
| Jan 12, 5:09 PM EST | Severe Thunderstorm Warning | GSP | 36 min |
| Jan 12, 5:54 PM EST | Mesoscale Discussion | SPC | 96 min |
| Jan 17, 10:04 PM EST | Dense Fog Advisory | GSP | 13 hr |
| Jan 31, 12:58 AM EST | Dense Fog Advisory | GSP | 9 hr |
| Mar 3, 7:07 PM EST | Special Weather Statement | GSP | 38 min |
| Mar 12, 3:24 PM EDT | Freeze Watch | GSP | 12 hr |
| Mar 13, 3:04 AM EDT | Freeze Watch | GSP | 24 hr |
| Mar 13, 3:04 AM EDT | Freeze Warning | GSP | 32 hr |
| Mar 14, 3:25 AM EDT | Freeze Warning | GSP | 31 hr |
| Mar 14, 2:31 PM EDT | Freeze Watch | GSP | 12 hr |
| Mar 15, 2:59 AM EDT | Freeze Warning | GSP | 30 hr |
| Mar 17, 10:52 AM EDT | Freeze Watch | GSP | 17 hr |
| Mar 18, 3:30 AM EDT | Freeze Watch | GSP | 11 hr |
| Mar 18, 3:30 AM EDT | Freeze Warning | GSP | 32 hr |
| Mar 18, 2:33 PM EDT | Freeze Warning | GSP | 43 hr |
| Mar 19, 3:30 AM EDT | Freeze Watch | GSP | 35 hr |
| Mar 20, 10:04 AM EDT | Freeze Warning | GSP | 24 hr |
| Mar 23, 3:51 AM EDT | Dense Fog Advisory | GSP | 7 hr |
| Mar 25, 6:22 AM EDT | Special Weather Statement | GSP | 38 min |
| Mar 30, 2:52 PM EDT | High Wind Watch | GSP | 21 hr |
| Mar 31, 12:05 PM EDT | Wind Advisory | GSP | 36 hr |
| Apr 6, 4:30 PM EDT | Severe Thunderstorm Warning | GSP | 45 min |
| Apr 6, 4:51 PM EDT | Severe Thunderstorm Warning | GSP | 39 min |
| Apr 9, 2:32 PM EDT | Frost Advisory | GSP | 18 hr |
| Apr 10, 9:54 AM EDT | Frost Advisory | GSP | 23 hr |
| Apr 22, 5:58 AM EDT | Special Weather Statement | GSP | 32 min |
| Apr 22, 6:29 AM EDT | Special Weather Statement | GSP | 31 min |
| Apr 22, 7:01 AM EDT | Special Weather Statement | GSP | 29 min |
| Apr 28, 3:59 PM EDT | Mesoscale Discussion | SPC | 91 min |
| May 2, 3:19 AM EDT | Wind Advisory | GSP | 24 hr |
| May 7, 4:51 PM EDT | Special Weather Statement | GSP | 39 min |
| May 7, 5:31 PM EDT | Mesoscale Discussion | SPC | 119 min |
| May 16, 2:34 PM EDT | Mesoscale Discussion | SPC | 116 min |
| May 16, 4:03 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 16, 7:05 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Jun 5, 2:49 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 19, 2:49 PM EDT | Flood Watch | GSP | 3 days |
| Jun 20, 4:48 AM EDT | Areal Flood Advisory | GSP | 6 hr |
| Jun 26, 12:36 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 26, 4:51 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 26, 7:08 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 1, 5:24 PM EDT | Severe Thunderstorm Warning | GSP | 36 min |
| Jul 2, 2:06 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Jul 2, 5:54 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 2, 6:25 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 3, 3:19 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jul 3, 5:15 PM EDT | Special Weather Statement | GSP | 30 min |
| Jul 3, 5:50 PM EDT | Special Weather Statement | GSP | 25 min |
| Jul 7, 3:36 PM EDT | Special Weather Statement | GSP | 24 min |
| Jul 14, 1:38 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 15, 7:18 PM EDT | Special Weather Statement | GSP | 42 min |
| Jul 15, 9:53 PM EDT | Flash Flood Warning | GSP | 3 hr |
| Jul 15, 11:43 PM EDT | Flash Flood Warning | GSP | 107 min |
| Jul 16, 12:56 AM EDT | Areal Flood Warning | GSP | 3 hr |
| Jul 23, 12:28 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 4:17 PM EDT | Special Weather Statement | GSP | 28 min |
| Jul 23, 4:27 PM EDT | Severe Thunderstorm Warning | GSP | 48 min |
| Jul 28, 4:31 PM EDT | Severe Thunderstorm Warning | GSP | 44 min |
| Jul 29, 2:47 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jul 29, 3:45 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 29, 5:56 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Jul 29, 6:50 PM EDT | Severe Thunderstorm Warning | GSP | 40 min |
| Jul 29, 7:03 PM EDT | Severe Thunderstorm Warning | GSP | 42 min |
| Jul 29, 7:34 PM EDT | Severe Thunderstorm Warning | GSP | 41 min |
| Aug 7, 1:19 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Aug 7, 1:51 PM EDT | Tornado Watch | SPC | 6 hr |
| Aug 7, 4:04 PM EDT | Severe Thunderstorm Warning | GSP | 41 min |
| Aug 7, 4:08 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Aug 7, 4:29 PM EDT | Severe Thunderstorm Warning | GSP | 46 min |
| Aug 7, 4:52 PM EDT | Severe Thunderstorm Warning | GSP | 38 min |
| Aug 12, 2:38 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 12, 6:58 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Aug 14, 2:07 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 14, 2:48 PM EDT | Special Weather Statement | GSP | 27 min |
| Aug 14, 10:24 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 15, 2:13 AM EDT | Special Weather Statement | GSP | 32 min |
| Aug 15, 1:28 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 15, 1:48 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 24, 1:08 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 26, 3:25 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 27, 3:34 PM EDT | Special Weather Statement | GSP | 26 min |
| Aug 27, 3:40 PM EDT | Severe Thunderstorm Warning | GSP | 50 min |
| Aug 27, 4:29 PM EDT | Severe Thunderstorm Warning | GSP | 46 min |
| Aug 28, 6:51 PM EDT | Special Weather Statement | GSP | 24 min |
| Aug 28, 8:30 PM EDT | Areal Flood Advisory | GSP | 6 hr |
| Sep 7, 2:25 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 7, 7:55 PM EDT | Severe Thunderstorm Warning | GSP | 50 min |
| Sep 9, 3:22 AM EDT | Flood Watch | GSP | 23 hr |
| Sep 9, 1:41 PM EDT | Special Weather Statement | GSP | 19 min |
| Sep 9, 2:26 PM EDT | Special Weather Statement | GSP | 34 min |
| Sep 9, 2:49 PM EDT | Special Weather Statement | GSP | 26 min |
| Sep 10, 5:13 PM EDT | Special Weather Statement | GSP | 32 min |
| Sep 10, 5:13 PM EDT | Special Weather Statement | GSP | 32 min |
| Sep 12, 3:45 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 12, 4:27 PM EDT | Special Weather Statement | GSP | 33 min |
| Oct 8, 2:40 PM EDT | Frost Advisory | GSP | 18 hr |
| Oct 20, 2:47 PM EDT | Special Weather Statement | GSP | 28 min |
| Oct 30, 3:00 PM EDT | Freeze Watch | GSP | 13 hr |
| Oct 31, 3:50 AM EDT | Freeze Warning | GSP | 30 hr |
| Nov 1, 5:45 AM EDT | Freeze Warning | GSP | 28 hr |
| Dec 2, 8:45 AM EST | Dense Fog Advisory | GSP | 2 hr |
| Dec 2, 7:08 PM EST | Dense Fog Advisory | GSP | 13 hr |
| Dec 25, 3:53 AM EST | Flood Watch | GSP | 48 hr |
| Dec 27, 2:58 PM EST | Areal Flood Advisory | GSP | 14 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 | 16 |
| Severe Thunderstorm Watch | 6 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 25 |
| Special Weather Statement | 22 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Warning | 2 |
| Flood Watch | 3 |
| Areal Flood Advisory | 3 |
| Cold | |
| Freeze Warning | 8 |
| Freeze Watch | 7 |
| Frost Advisory | 3 |
| Wind and dust | |
| High Wind Watch | 1 |
| Wind Advisory | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 8 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20222024
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.