Alert archive / North Carolina / Henderson County
Weather alerts in Henderson County, North Carolina, 2018
214 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Henderson County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 214
- Warnings
- 64
- Watches
- 18
- Advisories
- 74
- Busiest month
- May43 alerts
- Busiest day
- December 21, 20189 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Henderson County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 19 | 14 | 26% | 6 | 100% | 21 min |
| Flash flood warnings | 8 | 6 | 25% | 11 | 100% | 319 min |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Greenville-Spartanburg, SC: tornado warnings | 7 | 1 | 86% | 3 | 67% | 5 min |
| NWS Greenville-Spartanburg, SC: severe thunderstorm warnings | 347 | 244 | 30% | 600 | 87% | 20 min |
| NWS Greenville-Spartanburg, SC: flash flood warnings | 74 | 53 | 28% | 177 | 83% | 159 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, 2:31 AM EST | Wind Chill Advisory | GSP | 31 hr |
| Jan 3, 3:47 AM EST | Wind Chill Advisory | GSP | 48 hr |
| Jan 4, 3:29 AM EST | Wind Chill Advisory | GSP | 33 hr |
| Jan 5, 3:57 AM EST | Wind Chill Advisory | GSP | 31 hr |
| Jan 7, 2:51 PM EST | Winter Weather Advisory | GSP | 24 hr |
| Jan 11, 1:46 PM EST | Areal Flood Advisory | GSP | 6 hr |
| Jan 11, 3:00 PM EST | Flood Watch | GSP | 28 hr |
| Jan 11, 3:58 PM EST | Areal Flood Advisory | GSP | 6 hr |
| Jan 11, 7:44 PM EST | Areal Flood Warning | GSP | 11 hr |
| Jan 12, 7:15 AM EST | Areal Flood Warning | GSP | 4 hr |
| Jan 12, 7:23 AM EST | River Flood Warning | GSP | 52 hr |
| Jan 12, 10:55 AM EST | Areal Flood Advisory | GSP | 4 hr |
| Jan 15, 3:32 PM EST | Winter Weather Advisory | GSP | 4 days |
| Jan 17, 4:27 AM EST | Wind Chill Advisory | GSP | 30 hr |
| Jan 17, 10:11 AM EST | Winter Weather Advisory | GSP | 109 min |
| Feb 3, 3:28 AM EST | Winter Weather Advisory | GSP | 33 hr |
| Feb 4, 5:59 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 9, 3:46 AM EST | Flood Watch | GSP | 3 days |
| Feb 10, 3:59 PM EST | River Flood Advisory | GSP | 12 hr |
| Feb 10, 11:08 PM EST | River Flood Warning | GSP | 4 days |
| Feb 11, 1:43 AM EST | Areal Flood Advisory | GSP | 4 hr |
| Feb 11, 3:44 AM EST | River Flood Advisory | GSP | 12 hr |
| Feb 11, 5:44 AM EST | Areal Flood Advisory | GSP | 3 hr |
| Feb 28, 2:55 PM EST | High Wind Watch | GSP | 13 hr |
| Mar 1, 4:10 AM EST | High Wind Warning | GSP | 48 hr |
| Mar 3, 12:58 AM EST | Wind Advisory | GSP | 11 hr |
| Mar 20, 5:32 AM EDT | Dense Fog Advisory | GSP | 4 hr |
| Mar 20, 5:30 PM EDT | Special Weather Statement | GSP | 30 min |
| Mar 20, 6:56 PM EDT | Special Weather Statement | GSP | 34 min |
| Mar 24, 5:50 PM EDT | Special Weather Statement | GSP | 40 min |
| Mar 24, 7:56 PM EDT | Special Weather Statement | GSP | 34 min |
| Apr 4, 4:15 AM EDT | Special Weather Statement | GSP | 45 min |
| Apr 4, 4:50 AM EDT | Special Weather Statement | GSP | 40 min |
| Apr 10, 2:51 PM EDT | Frost Advisory | GSP | 18 hr |
| Apr 15, 3:43 AM EDT | Flash Flood Watch | GSP | 16 hr |
| Apr 15, 10:30 AM EDT | Special Weather Statement | GSP | 60 min |
| Apr 16, 4:13 AM EDT | Freeze Warning | GSP | 29 hr |
| Apr 18, 2:50 PM EDT | Freeze Watch | GSP | 13 hr |
| Apr 19, 4:12 AM EDT | Freeze Warning | GSP | 29 hr |
| Apr 20, 7:59 PM EDT | Frost Advisory | GSP | 13 hr |
| Apr 22, 4:20 AM EDT | Flood Watch | GSP | 60 hr |
| Apr 24, 11:09 AM EDT | River Flood Advisory | GSP | 12 hr |
| Apr 25, 12:01 AM EDT | River Flood Advisory | GSP | 4 hr |
| Apr 25, 3:27 AM EDT | River Flood Warning | GSP | 6 hr |
| Apr 25, 10:10 AM EDT | River Flood Warning | GSP | 10 hr |
| Apr 29, 3:35 AM EDT | Frost Advisory | GSP | 29 hr |
| May 7, 3:47 PM EDT | Special Weather Statement | GSP | 28 min |
| May 10, 2:42 PM EDT | Special Weather Statement | GSP | 33 min |
| May 10, 4:46 PM EDT | Severe Thunderstorm Warning | GSP | 44 min |
| May 11, 3:58 PM EDT | Special Weather Statement | GSP | 47 min |
| May 11, 4:41 PM EDT | Special Weather Statement | GSP | 49 min |
| May 11, 5:34 PM EDT | Special Weather Statement | GSP | 41 min |
| May 16, 8:16 AM EDT | Areal Flood Advisory | GSP | 6 hr |
| May 16, 9:35 AM EDT | Areal Flood Warning | GSP | 12 hr |
| May 16, 10:29 AM EDT | River Flood Advisory | GSP | 7 hr |
| May 16, 12:23 PM EDT | River Flood Advisory | GSP | 69 hr |
| May 16, 4:10 PM EDT | River Flood Warning | GSP | 5 days |
| May 16, 8:50 PM EDT | Areal Flood Advisory | GSP | 4 hr |
| May 17, 3:50 AM EDT | Flash Flood Watch | GSP | 68 hr |
| May 17, 7:48 PM EDT | Special Weather Statement | GSP | 27 min |
| May 17, 8:21 PM EDT | Special Weather Statement | GSP | 24 min |
| May 17, 9:02 PM EDT | Areal Flood Advisory | GSP | 118 min |
| May 17, 9:37 PM EDT | Flash Flood Warning | GSP | 4 hr |
| May 18, 1:38 AM EDT | Areal Flood Advisory | GSP | 6 hr |
| May 18, 3:05 AM EDT | Areal Flood Warning | GSP | 12 hr |
| May 18, 7:53 AM EDT | River Flood Warning | GSP | 61 hr |
| May 18, 9:56 PM EDT | Flash Flood Warning | GSP | 4 hr |
| May 18, 11:01 PM EDT | Areal Flood Advisory | GSP | 8 hr |
| May 19, 1:46 AM EDT | Areal Flood Warning | GSP | 6 hr |
| May 19, 8:18 AM EDT | Areal Flood Warning | GSP | 12 hr |
| May 20, 8:27 PM EDT | River Flood Advisory | GSP | 12 hr |
| May 26, 11:21 PM EDT | River Flood Advisory | GSP | 21 hr |
| May 26, 11:21 PM EDT | River Flood Advisory | GSP | 21 hr |
| May 27, 4:44 AM EDT | Flash Flood Watch | GSP | 5 days |
| May 27, 10:09 AM EDT | River Flood Warning | GSP | 8 days |
| May 27, 8:05 PM EDT | River Flood Advisory | GSP | 5 days |
| May 29, 11:56 AM EDT | Flash Flood Warning | GSP | 6 hr |
| May 29, 2:49 PM EDT | Areal Flood Advisory | GSP | 3 hr |
| May 29, 3:47 PM EDT | River Flood Warning | GSP | 7 days |
| May 29, 4:58 PM EDT | Flash Flood Warning | GSP | 62 min |
| May 29, 5:41 PM EDT | Flash Flood Warning | GSP | 5 hr |
| May 29, 11:02 PM EDT | Flash Flood Warning | GSP | 6 hr |
| May 30, 4:47 AM EDT | Areal Flood Warning | GSP | 6 hr |
| May 30, 10:55 AM EDT | Areal Flood Warning | GSP | 12 hr |
| May 30, 11:15 PM EDT | Areal Flood Advisory | GSP | 6 hr |
| May 31, 2:54 PM EDT | Special Weather Statement | GSP | 36 min |
| May 31, 3:34 PM EDT | Special Weather Statement | GSP | 26 min |
| May 31, 4:03 PM EDT | Special Weather Statement | GSP | 57 min |
| May 31, 4:22 PM EDT | Areal Flood Advisory | GSP | 4 hr |
| May 31, 8:20 PM EDT | Areal Flood Advisory | GSP | 3 hr |
| May 31, 8:41 PM EDT | Severe Thunderstorm Warning | GSP | 49 min |
| May 31, 9:25 PM EDT | Severe Thunderstorm Warning | GSP | 34 min |
| Jun 3, 3:24 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Jun 3, 3:40 PM EDT | Severe Thunderstorm Warning | GSP | 39 min |
| Jun 3, 4:57 PM EDT | Severe Thunderstorm Warning | GSP | 48 min |
| Jun 3, 5:06 PM EDT | Severe Thunderstorm Warning | GSP | 39 min |
| Jun 3, 5:43 PM EDT | Severe Thunderstorm Warning | GSP | 47 min |
| Jun 3, 9:42 PM EDT | River Flood Advisory | GSP | 11 hr |
| Jun 10, 2:48 PM EDT | Special Weather Statement | GSP | 27 min |
| Jun 17, 5:17 PM EDT | Special Weather Statement | GSP | 28 min |
| Jun 19, 3:22 PM EDT | Special Weather Statement | GSP | 23 min |
| Jun 20, 2:19 PM EDT | Special Weather Statement | GSP | 41 min |
| Jun 20, 2:39 PM EDT | Special Weather Statement | GSP | 51 min |
| Jun 20, 2:59 PM EDT | Severe Thunderstorm Warning | GSP | 46 min |
| Jun 23, 5:03 PM EDT | Severe Thunderstorm Warning | GSP | 57 min |
| Jun 24, 5:53 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 25, 12:29 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Jun 25, 1:02 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 25, 4:53 PM EDT | Severe Thunderstorm Warning | GSP | 52 min |
| Jun 25, 5:04 PM EDT | Special Weather Statement | GSP | 26 min |
| Jun 25, 5:09 PM EDT | Severe Thunderstorm Warning | GSP | 66 min |
| Jun 26, 1:41 PM EDT | Special Weather Statement | GSP | 34 min |
| Jun 26, 2:06 PM EDT | Severe Thunderstorm Warning | GSP | 39 min |
| Jun 26, 2:46 PM EDT | Special Weather Statement | GSP | 29 min |
| Jun 26, 6:49 PM EDT | Severe Thunderstorm Warning | GSP | 41 min |
| Jun 26, 7:20 PM EDT | Special Weather Statement | GSP | 25 min |
| Jun 26, 7:44 PM EDT | Special Weather Statement | GSP | 46 min |
| Jun 27, 1:52 PM EDT | Special Weather Statement | GSP | 23 min |
| Jun 27, 2:29 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 2, 9:29 PM EDT | Special Weather Statement | GSP | 31 min |
| Jul 6, 12:58 PM EDT | Severe Thunderstorm Warning | GSP | 47 min |
| Jul 21, 3:37 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 21, 4:17 PM EDT | Severe Thunderstorm Warning | GSP | 43 min |
| Jul 21, 5:55 PM EDT | Severe Thunderstorm Warning | GSP | 50 min |
| Jul 21, 6:07 PM EDT | Areal Flood Advisory | GSP | 113 min |
| Jul 21, 7:24 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 22, 12:52 PM EDT | Special Weather Statement | GSP | 38 min |
| Jul 22, 1:39 PM EDT | Special Weather Statement | GSP | 51 min |
| Jul 22, 2:50 PM EDT | Special Weather Statement | GSP | 40 min |
| Jul 30, 9:26 PM EDT | Special Weather Statement | GSP | 64 min |
| Jul 31, 3:58 AM EDT | Flash Flood Watch | GSP | 4 days |
| Aug 1, 11:37 AM EDT | River Flood Advisory | GSP | 30 hr |
| Aug 2, 10:31 AM EDT | River Flood Warning | GSP | 3 days |
| Aug 3, 9:32 AM EDT | River Flood Advisory | GSP | 44 hr |
| Aug 6, 2:46 PM EDT | Special Weather Statement | GSP | 29 min |
| Aug 7, 4:01 PM EDT | Special Weather Statement | GSP | 29 min |
| Aug 8, 2:28 PM EDT | Special Weather Statement | GSP | 32 min |
| Aug 8, 3:00 PM EDT | Special Weather Statement | GSP | 30 min |
| Aug 8, 3:27 PM EDT | Severe Thunderstorm Warning | GSP | 37 min |
| Aug 8, 4:01 PM EDT | Special Weather Statement | GSP | 59 min |
| Aug 8, 5:42 PM EDT | Special Weather Statement | GSP | 33 min |
| Aug 9, 7:37 PM EDT | Special Weather Statement | GSP | 23 min |
| Aug 9, 7:59 PM EDT | Special Weather Statement | GSP | 31 min |
| Aug 12, 4:06 PM EDT | Special Weather Statement | GSP | 24 min |
| Aug 12, 4:31 PM EDT | Special Weather Statement | GSP | 14 min |
| Aug 12, 5:32 PM EDT | Special Weather Statement | GSP | 28 min |
| Aug 21, 3:53 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 2, 5:12 PM EDT | Severe Thunderstorm Warning | GSP | 33 min |
| Sep 13, 3:09 PM EDT | Flash Flood Watch | GSP | 4 days |
| Sep 14, 5:36 PM EDT | Wind Advisory | GSP | 48 hr |
| Sep 16, 12:16 PM EDT | Flash Flood Warning | GSP | 5 hr |
| Sep 27, 6:53 PM EDT | Severe Thunderstorm Warning | GSP | 67 min |
| Sep 30, 12:53 AM EDT | Areal Flood Advisory | GSP | 112 min |
| Sep 30, 4:46 AM EDT | Areal Flood Warning | GSP | 4 hr |
| Oct 9, 3:37 PM EDT | Flash Flood Watch | GSP | 52 hr |
| Oct 10, 5:19 AM EDT | Tropical Storm Warning | GSP | 36 hr |
| Oct 11, 3:45 AM EDT | Areal Flood Advisory | GSP | 6 hr |
| Oct 11, 5:33 AM EDT | Flash Flood Warning | GSP | 6 hr |
| Oct 11, 10:04 AM EDT | River Flood Warning | GSP | 38 hr |
| Oct 11, 11:27 AM EDT | Areal Flood Warning | GSP | 12 hr |
| Oct 11, 11:34 AM EDT | Areal Flood Warning | GSP | 4 hr |
| Oct 11, 11:36 AM EDT | River Flood Warning | GSP | 30 hr |
| Oct 11, 5:15 PM EDT | Wind Advisory | GSP | 11 hr |
| Oct 12, 9:48 AM EDT | River Flood Advisory | GSP | 12 hr |
| Oct 12, 11:31 PM EDT | River Flood Advisory | GSP | 12 hr |
| Oct 19, 3:13 PM EDT | Freeze Watch | GSP | 13 hr |
| Oct 20, 4:11 AM EDT | Freeze Warning | GSP | 30 hr |
| Oct 20, 4:11 AM EDT | Wind Advisory | GSP | 30 hr |
| Oct 21, 4:14 AM EDT | Freeze Warning | GSP | 30 hr |
| Oct 26, 12:22 PM EDT | Areal Flood Advisory | GSP | 8 hr |
| Oct 28, 10:42 AM EDT | Wind Advisory | GSP | 24 hr |
| Nov 6, 2:40 AM EST | Mesoscale Discussion | SPC | 65 min |
| Nov 9, 2:51 PM EST | Wind Advisory | GSP | 22 hr |
| Nov 12, 5:43 PM EST | Special Weather Statement | GSP | 2 hr |
| Nov 12, 6:34 PM EST | Areal Flood Advisory | GSP | 4 hr |
| Nov 12, 9:13 PM EST | River Flood Warning | GSP | 6 hr |
| Nov 13, 3:11 PM EST | Flood Watch | GSP | 52 hr |
| Nov 13, 3:25 PM EST | Winter Storm Watch | GSP | 13 hr |
| Nov 14, 4:36 AM EST | Winter Storm Warning | GSP | 32 hr |
| Nov 14, 4:36 AM EST | Winter Weather Advisory | GSP | 32 hr |
| Nov 15, 5:37 AM EST | Areal Flood Warning | GSP | 6 hr |
| Nov 15, 6:53 AM EST | Areal Flood Advisory | GSP | 5 hr |
| Nov 15, 7:24 AM EST | Areal Flood Advisory | GSP | 5 hr |
| Nov 15, 10:38 AM EST | River Flood Advisory | GSP | 26 hr |
| Nov 15, 10:50 AM EST | River Flood Advisory | GSP | 26 hr |
| Nov 23, 4:22 AM EST | Winter Weather Advisory | GSP | 28 hr |
| Nov 23, 9:15 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 6, 4:05 PM EST | Winter Storm Watch | GSP | 24 hr |
| Dec 7, 4:20 AM EST | Winter Storm Warning | GSP | 3 days |
| Dec 8, 10:54 AM EST | Winter Weather Advisory | GSP | 3 days |
| Dec 8, 10:32 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Dec 9, 3:08 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Dec 9, 8:18 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Dec 11, 3:11 PM EST | Winter Weather Advisory | GSP | 21 hr |
| Dec 13, 3:12 PM EST | Flood Watch | GSP | 48 hr |
| Dec 20, 4:10 PM EST | Areal Flood Advisory | GSP | 9 hr |
| Dec 20, 9:40 PM EST | River Flood Advisory | GSP | 12 hr |
| Dec 20, 10:15 PM EST | River Flood Advisory | GSP | 14 hr |
| Dec 21, 1:30 AM EST | Dense Fog Advisory | GSP | 5 hr |
| Dec 21, 2:37 AM EST | River Flood Warning | GSP | 69 hr |
| Dec 21, 7:47 AM EST | Areal Flood Advisory | GSP | 3 hr |
| Dec 21, 9:29 AM EST | Areal Flood Advisory | GSP | 7 hr |
| Dec 21, 10:38 AM EST | Areal Flood Advisory | GSP | 3 hr |
| Dec 21, 12:14 PM EST | River Flood Advisory | GSP | 46 hr |
| Dec 21, 4:30 PM EST | Areal Flood Advisory | GSP | 4 hr |
| Dec 22, 11:54 PM EST | River Flood Advisory | GSP | 12 hr |
| Dec 26, 3:01 PM EST | Flood Watch | GSP | 52 hr |
| Dec 27, 4:38 PM EST | River Flood Warning | GSP | 5 days |
| Dec 27, 4:46 PM EST | River Flood Advisory | GSP | 15 hr |
| Dec 28, 12:50 AM EST | Areal Flood Advisory | GSP | 3 hr |
| Dec 28, 3:40 AM EST | Areal Flood Warning | GSP | 23 hr |
| Dec 28, 7:09 AM EST | River Flood Warning | GSP | 4 days |
| Dec 28, 9:08 AM EST | Areal Flood Advisory | GSP | 6 hr |
| Dec 28, 2:50 PM EST | Areal Flood Warning | GSP | 12 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 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 13 |
| Special Weather Statement | 45 |
| Flooding | |
| Areal Flood Warning | 14 |
| Flash Flood Warning | 8 |
| River Flood Warning | 15 |
| Flash Flood Watch | 6 |
| Flood Watch | 6 |
| Areal Flood Advisory | 28 |
| River Flood Advisory | 22 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 8 |
| Cold | |
| Freeze Warning | 4 |
| Freeze Watch | 2 |
| Frost Advisory | 3 |
| Wind Chill Advisory | 5 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Wind Advisory | 6 |
| Fog and smoke | |
| Dense Fog Advisory | 2 |
| Tropical | |
| Tropical Storm Warning | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20172019
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.