Alert archive / North Carolina / Union County
Weather alerts in Union County, North Carolina, 2025
129 weather alerts in 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Union County and its neighbors
Each county as a circle sized by its count in 2025. Tap one for its archive.
- Alerts
- 129
- Warnings
- 19
- Watches
- 9
- Advisories
- 27
- Busiest month
- June27 alerts
- Busiest day
- June 25, 202512 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
1 of 1 tornado warnings covering Union County in 2025 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 3 minutes after it went out.
Union County, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 1 | 0% | 1 | 100% | 3 min |
| Severe thunderstorm warnings | 14 | 13 | 7% | 11 | 91% | 16 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Greenville-Spartanburg, SC: tornado warnings | 7 | 4 | 43% | 5 | 80% | 11 min |
| NWS Greenville-Spartanburg, SC: severe thunderstorm warnings | 259 | 173 | 33% | 549 | 83% | 22 min |
| NWS Greenville-Spartanburg, SC: flash flood warnings | 13 | 11 | 15% | 42 | 86% | 75 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 8, 3:46 AM EST | Winter Storm Watch | GSP | 34 hr |
| Jan 9, 2:13 PM EST | Winter Storm Warning | GSP | 46 hr |
| Jan 10, 6:34 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 10, 10:27 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Jan 19, 3:24 AM EST | Dense Fog Advisory | GSP | 8 hr |
| Jan 20, 3:31 AM EST | Cold Weather Advisory | GSP | 31 hr |
| Jan 21, 3:32 AM EST | Cold Weather Advisory | GSP | 32 hr |
| Jan 21, 4:47 AM EST | Winter Weather Advisory | GSP | 28 hr |
| Feb 15, 3:19 PM EST | Wind Advisory | GSP | 44 hr |
| Feb 15, 11:50 PM EST | Dense Fog Advisory | GSP | 7 hr |
| Feb 16, 6:58 AM EST | Special Weather Statement | GSP | 32 min |
| Feb 16, 7:30 AM EST | Special Weather Statement | GSP | 15 min |
| Feb 18, 3:30 AM EST | Winter Weather Advisory | GSP | 63 hr |
| Feb 19, 1:04 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 28, 2:11 PM EST | Fire Weather Watch | GSP | 14 hr |
| Mar 1, 4:07 AM EST | Red Flag Warning | GSP | 18 hr |
| Mar 4, 3:43 AM EST | Wind Advisory | GSP | 63 hr |
| Mar 5, 7:22 AM EST | Mesoscale Discussion | SPC | 2 hr |
| Mar 5, 7:47 AM EST | Tornado Watch | SPC | 7 hr |
| Mar 5, 8:08 AM EST | Severe Thunderstorm Warning | GSP | 52 min |
| Mar 5, 8:31 AM EST | Tornado Warning | GSP | 29 min |
| Mar 15, 3:53 AM EDT | Wind Advisory | GSP | 34 hr |
| Mar 16, 5:30 AM EDT | Mesoscale Discussion | SPC | 60 min |
| Mar 16, 8:33 AM EDT | Special Weather Statement | GSP | 72 min |
| Mar 16, 9:09 AM EDT | Severe Thunderstorm Warning | GSP | 36 min |
| Mar 16, 4:25 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Mar 16, 6:07 PM EDT | Special Weather Statement | GSP | 23 min |
| Mar 21, 2:23 PM EDT | Red Flag Warning | GSP | 30 hr |
| Mar 31, 11:33 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Mar 31, 3:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Mar 31, 4:57 PM EDT | Severe Thunderstorm Warning | GSP | 56 min |
| Apr 22, 3:14 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| May 2, 5:56 PM EDT | Special Weather Statement | CAE | 34 min |
| May 2, 6:16 PM EDT | Severe Thunderstorm Warning | GSP | 59 min |
| May 2, 7:17 PM EDT | Special Weather Statement | GSP | 28 min |
| May 3, 11:58 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 3, 2:26 PM EDT | Special Weather Statement | GSP | 49 min |
| May 3, 2:57 PM EDT | Special Weather Statement | GSP | 48 min |
| May 3, 3:13 PM EDT | Special Weather Statement | GSP | 32 min |
| May 4, 12:47 AM EDT | Special Weather Statement | GSP | 28 min |
| May 4, 1:00 AM EDT | Severe Thunderstorm Warning | GSP | 45 min |
| May 8, 2:37 PM EDT | Mesoscale Discussion | SPC | 83 min |
| May 8, 4:23 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 8, 7:11 PM EDT | Mesoscale Discussion | SPC | 64 min |
| May 8, 8:47 PM EDT | Special Weather Statement | CAE | 58 min |
| May 8, 9:40 PM EDT | Special Weather Statement | GSP | 50 min |
| May 13, 12:44 PM EDT | Special Weather Statement | GSP | 31 min |
| May 13, 1:10 PM EDT | Special Weather Statement | GSP | 35 min |
| May 13, 1:47 PM EDT | Mesoscale Discussion | SPC | 118 min |
| May 14, 10:18 PM EDT | Special Weather Statement | GSP | 27 min |
| May 17, 4:35 AM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 17, 6:51 AM EDT | Mesoscale Discussion | SPC | 84 min |
| May 17, 9:01 AM EDT | Special Weather Statement | GSP | 29 min |
| May 21, 3:46 AM EDT | Special Weather Statement | GSP | 44 min |
| May 30, 11:48 AM EDT | Mesoscale Discussion | SPC | 117 min |
| May 30, 12:54 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 30, 3:44 PM EDT | Special Weather Statement | GSP | 46 min |
| May 30, 7:07 PM EDT | Special Weather Statement | GSP | 38 min |
| Jun 1, 3:13 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 8, 9:13 AM EDT | Special Weather Statement | GSP | 32 min |
| Jun 9, 8:18 PM EDT | Special Weather Statement | CAE | 27 min |
| Jun 12, 6:28 PM EDT | Special Weather Statement | GSP | 32 min |
| Jun 12, 7:08 PM EDT | Special Weather Statement | GSP | 22 min |
| Jun 16, 6:45 PM EDT | Special Weather Statement | GSP | 60 min |
| Jun 16, 6:46 PM EDT | Special Weather Statement | CAE | 44 min |
| Jun 16, 7:30 PM EDT | Special Weather Statement | GSP | 45 min |
| Jun 19, 1:32 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 23, 2:09 PM EDT | Heat Advisory | GSP | 54 hr |
| Jun 25, 12:17 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jun 25, 2:17 PM EDT | Heat Advisory | GSP | 29 hr |
| Jun 25, 3:16 PM EDT | Severe Thunderstorm Watch | SPC | 11 hr |
| Jun 25, 4:40 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 25, 5:29 PM EDT | Severe Thunderstorm Warning | GSP | 61 min |
| Jun 25, 5:31 PM EDT | Special Weather Statement | CAE | 29 min |
| Jun 25, 5:39 PM EDT | Severe Thunderstorm Warning | GSP | 54 min |
| Jun 25, 6:18 PM EDT | Severe Thunderstorm Warning | GSP | 57 min |
| Jun 25, 6:20 PM EDT | Severe Thunderstorm Warning | GSP | 55 min |
| Jun 25, 6:30 PM EDT | Severe Thunderstorm Warning | GSP | 47 min |
| Jun 25, 7:28 PM EDT | Severe Thunderstorm Warning | GSP | 47 min |
| Jun 25, 7:55 PM EDT | Special Weather Statement | GSP | 50 min |
| Jun 25, 8:07 PM EDT | Special Weather Statement | GSP | 38 min |
| Jun 27, 5:27 PM EDT | Special Weather Statement | GSP | 33 min |
| Jun 27, 6:00 PM EDT | Special Weather Statement | GSP | 30 min |
| Jun 27, 6:07 PM EDT | Special Weather Statement | CAE | 23 min |
| Jun 29, 5:33 PM EDT | Special Weather Statement | GSP | 27 min |
| Jun 30, 9:42 PM EDT | Special Weather Statement | CAE | 18 min |
| Jul 2, 3:48 PM EDT | Special Weather Statement | GSP | 27 min |
| Jul 8, 2:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jul 9, 1:07 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jul 9, 4:31 PM EDT | Special Weather Statement | GSP | 29 min |
| Jul 9, 4:49 PM EDT | Special Weather Statement | GSP | 26 min |
| Jul 9, 4:59 PM EDT | Severe Thunderstorm Warning | GSP | 31 min |
| Jul 12, 7:48 PM EDT | Special Weather Statement | GSP | 27 min |
| Jul 14, 5:43 PM EDT | Special Weather Statement | GSP | 47 min |
| Jul 17, 3:53 PM EDT | Special Weather Statement | GSP | 52 min |
| Jul 18, 12:27 AM EDT | Heat Advisory | GSP | 19 hr |
| Jul 18, 3:26 PM EDT | Special Weather Statement | GSP | 19 min |
| Jul 18, 7:03 PM EDT | Heat Advisory | GSP | 25 hr |
| Jul 19, 4:36 PM EDT | Special Weather Statement | GSP | 9 min |
| Jul 19, 8:01 PM EDT | Heat Advisory | GSP | 24 hr |
| Jul 20, 1:18 PM EDT | Heat Advisory | GSP | 31 hr |
| Jul 25, 2:08 PM EDT | Heat Advisory | GSP | 30 hr |
| Jul 26, 1:11 AM EDT | Heat Advisory | GSP | 49 hr |
| Jul 27, 1:48 AM EDT | Heat Advisory | GSP | 42 hr |
| Jul 27, 7:40 PM EDT | Special Weather Statement | GSP | 35 min |
| Jul 27, 8:18 PM EDT | Special Weather Statement | GSP | 42 min |
| Jul 28, 1:44 AM EDT | Heat Advisory | GSP | 42 hr |
| Jul 29, 2:02 AM EDT | Special Weather Statement | CAE | 58 min |
| Jul 31, 12:52 AM EDT | Special Weather Statement | GSP | 23 min |
| Jul 31, 1:32 AM EDT | Areal Flood Advisory | GSP | 3 hr |
| Aug 1, 2:44 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 1, 5:15 PM EDT | Severe Thunderstorm Warning | GSP | 60 min |
| Aug 1, 5:40 PM EDT | Special Weather Statement | CAE | 35 min |
| Aug 1, 5:52 PM EDT | Severe Thunderstorm Warning | GSP | 70 min |
| Aug 5, 10:22 AM EDT | Areal Flood Advisory | GSP | 12 hr |
| Aug 12, 4:01 PM EDT | Areal Flood Advisory | GSP | 4 hr |
| Oct 19, 8:56 PM EDT | Special Weather Statement | GSP | 49 min |
| Oct 19, 9:28 PM EDT | Special Weather Statement | GSP | 32 min |
| Oct 31, 1:09 AM EDT | Frost Advisory | GSP | 32 hr |
| Nov 8, 3:11 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Nov 8, 7:55 PM EST | Special Weather Statement | GSP | 35 min |
| Nov 9, 12:14 AM EST | Freeze Watch | GSP | 24 hr |
| Nov 10, 12:02 AM EST | Freeze Warning | GSP | 33 hr |
| Nov 25, 11:27 AM EST | Special Weather Statement | GSP | 78 min |
| Dec 6, 9:02 PM EST | Dense Fog Advisory | GSP | 14 hr |
| Dec 7, 8:32 PM EST | Dense Fog Advisory | GSP | 10 hr |
| Dec 13, 1:01 PM EST | Cold Weather Advisory | GSP | 44 hr |
| Dec 19, 4:59 AM EST | Special Weather Statement | GSP | 46 min |
| Dec 27, 5:43 AM EST | Dense Fog Advisory | GSP | 4 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 | 14 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 5 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 22 |
| Special Weather Statement | 52 |
| Flooding | |
| Areal Flood Advisory | 3 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 2 |
| Heat | |
| Heat Advisory | 10 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Cold Weather Advisory | 3 |
| Frost Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 3 |
| Fire | |
| Red Flag Warning | 2 |
| Fire Weather Watch | 1 |
| 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 archive20242026
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.