Alert archive / North Carolina / Henderson County
Weather alerts in Henderson County, North Carolina, 2016
124 weather alerts in 2016, 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 2016. Tap one for its archive.
- Alerts
- 124
- Warnings
- 26
- Watches
- 15
- Advisories
- 29
- Busiest month
- July27 alerts
- Busiest day
- February 3, 20166 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, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 10 | 7 | 30% | 5 | 60% | 25 min |
| Flash flood warnings | 2 | 2 | 0% | 5 | 100% | 142 min |
Each office's whole area, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Greenville-Spartanburg, SC: tornado warnings | 8 | 2 | 75% | 6 | 100% | 41 min |
| NWS Greenville-Spartanburg, SC: severe thunderstorm warnings | 248 | 185 | 25% | 536 | 80% | 18 min |
| NWS Greenville-Spartanburg, SC: flash flood warnings | 23 | 19 | 17% | 79 | 87% | 91 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 12, 2:41 PM EST | Wind Advisory | GSP | 3 hr |
| Jan 19, 10:49 AM EST | Winter Weather Advisory | GSP | 44 hr |
| Jan 20, 3:52 PM EST | Winter Storm Watch | GSP | 13 hr |
| Jan 21, 4:34 AM EST | Winter Storm Warning | GSP | 65 hr |
| Jan 22, 4:47 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Jan 23, 2:53 PM EST | Winter Weather Advisory | GSP | 16 hr |
| Feb 2, 2:07 AM EST | Dense Fog Advisory | GSP | 8 hr |
| Feb 3, 4:11 AM EST | Flash Flood Watch | GSP | 11 hr |
| Feb 3, 6:37 AM EST | Areal Flood Advisory | GSP | 3 hr |
| Feb 3, 7:45 AM EST | Flash Flood Warning | GSP | 6 hr |
| Feb 3, 10:10 AM EST | River Flood Warning | GSP | 66 hr |
| Feb 3, 1:55 PM EST | Areal Flood Advisory | GSP | 12 hr |
| Feb 3, 2:24 PM EST | River Flood Warning | GSP | 41 hr |
| Feb 13, 3:22 PM EST | Winter Storm Watch | GSP | 24 hr |
| Feb 14, 2:52 PM EST | Winter Weather Advisory | GSP | 33 hr |
| Feb 15, 2:11 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 16, 12:13 AM EST | Ice Storm Warning | GSP | 6 hr |
| Feb 23, 3:21 AM EST | Flash Flood Watch | GSP | 35 hr |
| Feb 23, 2:52 PM EST | Wind Advisory | GSP | 33 hr |
| Feb 24, 6:30 AM EST | Areal Flood Advisory | GSP | 9 hr |
| Feb 24, 8:14 AM EST | Mesoscale Discussion | SPC | 2 hr |
| Feb 24, 10:33 AM EST | River Flood Advisory | GSP | 11 hr |
| Feb 24, 9:41 PM EST | River Flood Warning | GSP | 39 hr |
| Mar 14, 5:16 AM EDT | Dense Fog Advisory | GSP | 5 hr |
| Mar 14, 12:38 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Mar 19, 3:10 PM EDT | Freeze Watch | GSP | 24 hr |
| Mar 20, 3:48 AM EDT | Freeze Warning | GSP | 30 hr |
| Mar 20, 2:49 PM EDT | Freeze Watch | GSP | 24 hr |
| Mar 21, 3:42 AM EDT | Freeze Warning | GSP | 29 hr |
| Apr 1, 3:15 PM EDT | Freeze Watch | GSP | 12 hr |
| Apr 2, 3:32 AM EDT | Freeze Warning | GSP | 30 hr |
| Apr 2, 8:51 PM EDT | High Wind Warning | GSP | 9 hr |
| Apr 4, 3:19 AM EDT | Freeze Watch | GSP | 24 hr |
| Apr 5, 3:37 AM EDT | Freeze Warning | GSP | 29 hr |
| Apr 7, 3:59 PM EDT | Freeze Watch | GSP | 12 hr |
| Apr 8, 3:59 AM EDT | Freeze Warning | GSP | 30 hr |
| Apr 8, 3:59 AM EDT | Hard Freeze Watch | GSP | 24 hr |
| Apr 8, 3:59 AM EDT | Wind Advisory | GSP | 38 hr |
| Apr 9, 3:50 AM EDT | Freeze Warning | GSP | 30 hr |
| Apr 30, 5:21 PM EDT | Special Weather Statement | GSP | 24 min |
| May 2, 3:13 PM EDT | Special Weather Statement | GSP | 32 min |
| May 11, 2:12 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 11, 4:45 PM EDT | Special Weather Statement | GSP | 30 min |
| May 11, 5:31 PM EDT | Special Weather Statement | GSP | 29 min |
| May 12, 12:50 PM EDT | Special Weather Statement | GSP | 25 min |
| May 21, 2:20 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 1, 2:28 PM EDT | Special Weather Statement | GSP | 47 min |
| Jun 3, 3:02 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 3, 4:41 PM EDT | Special Weather Statement | GSP | 34 min |
| Jun 3, 5:06 PM EDT | Special Weather Statement | GSP | 24 min |
| Jun 3, 5:32 PM EDT | Special Weather Statement | GSP | 28 min |
| Jun 3, 6:00 PM EDT | Areal Flood Advisory | GSP | 2 hr |
| Jun 11, 4:32 PM EDT | Special Weather Statement | GSP | 43 min |
| Jun 11, 5:05 PM EDT | Special Weather Statement | GSP | 40 min |
| Jun 13, 5:00 PM EDT | Special Weather Statement | GSP | 15 min |
| Jun 15, 12:04 PM EDT | Special Weather Statement | GSP | 26 min |
| Jun 15, 6:59 PM EDT | Special Weather Statement | GSP | 31 min |
| Jun 15, 10:42 PM EDT | Areal Flood Advisory | GSP | 3 hr |
| Jun 27, 1:14 PM EDT | Special Weather Statement | GSP | 31 min |
| Jun 27, 1:46 PM EDT | Special Weather Statement | GSP | 44 min |
| Jun 29, 2:34 PM EDT | Special Weather Statement | GSP | 41 min |
| Jun 30, 3:15 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 30, 3:46 PM EDT | Special Weather Statement | GSP | 29 min |
| Jun 30, 4:21 PM EDT | Special Weather Statement | GSP | 24 min |
| Jun 30, 5:09 PM EDT | Special Weather Statement | GSP | 36 min |
| Jun 30, 6:04 PM EDT | Special Weather Statement | GSP | 26 min |
| Jul 5, 1:47 PM EDT | Special Weather Statement | GSP | 43 min |
| Jul 5, 2:10 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 6, 7:27 PM EDT | Severe Thunderstorm Warning | GSP | 28 min |
| Jul 6, 7:51 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Jul 7, 7:21 PM EDT | Severe Thunderstorm Watch | SPC | 2 hr |
| Jul 7, 7:59 PM EDT | Severe Thunderstorm Warning | GSP | 46 min |
| Jul 8, 5:48 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jul 8, 6:15 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 8, 8:19 PM EDT | Severe Thunderstorm Warning | GSP | 56 min |
| Jul 8, 8:56 PM EDT | Severe Thunderstorm Warning | GSP | 38 min |
| Jul 11, 1:46 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Jul 11, 2:03 PM EDT | Special Weather Statement | GSP | 27 min |
| Jul 11, 7:56 PM EDT | Special Weather Statement | GSP | 34 min |
| Jul 11, 10:29 PM EDT | Areal Flood Advisory | GSP | 2 hr |
| Jul 14, 2:44 PM EDT | Special Weather Statement | GSP | 31 min |
| Jul 14, 7:21 PM EDT | Special Weather Statement | GSP | 24 min |
| Jul 17, 2:24 PM EDT | Special Weather Statement | GSP | 51 min |
| Jul 18, 3:20 PM EDT | Severe Thunderstorm Warning | GSP | 55 min |
| Jul 19, 2:38 PM EDT | Special Weather Statement | GSP | 37 min |
| Jul 19, 3:30 PM EDT | Special Weather Statement | GSP | 30 min |
| Jul 20, 4:28 PM EDT | Special Weather Statement | GSP | 47 min |
| Jul 20, 6:31 PM EDT | Special Weather Statement | GSP | 29 min |
| Jul 21, 2:03 PM EDT | Severe Thunderstorm Warning | GSP | 42 min |
| Jul 21, 2:47 PM EDT | Special Weather Statement | GSP | 28 min |
| Jul 21, 3:01 PM EDT | Severe Thunderstorm Warning | GSP | 30 min |
| Jul 23, 12:13 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 30, 3:32 PM EDT | Special Weather Statement | GSP | 28 min |
| Aug 3, 3:19 PM EDT | Flash Flood Watch | GSP | 41 hr |
| Aug 5, 12:04 AM EDT | Areal Flood Advisory | GSP | 116 min |
| Aug 5, 5:21 AM EDT | Flash Flood Warning | GSP | 3 hr |
| Aug 5, 5:42 PM EDT | Severe Thunderstorm Warning | GSP | 48 min |
| Aug 6, 2:53 PM EDT | Flash Flood Watch | GSP | 55 hr |
| Aug 17, 12:52 PM EDT | Severe Thunderstorm Warning | GSP | 38 min |
| Aug 17, 1:04 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Aug 17, 2:21 PM EDT | Special Weather Statement | GSP | 24 min |
| Aug 18, 1:02 PM EDT | Special Weather Statement | GSP | 28 min |
| Aug 18, 2:08 PM EDT | Special Weather Statement | GSP | 37 min |
| Aug 27, 3:25 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Aug 27, 4:23 PM EDT | Special Weather Statement | GSP | 37 min |
| Aug 27, 6:43 PM EDT | Special Weather Statement | GSP | 47 min |
| Oct 9, 3:56 AM EDT | Wind Advisory | GSP | 14 hr |
| Oct 21, 10:17 AM EDT | Wind Advisory | GSP | 26 hr |
| Oct 22, 4:34 AM EDT | Frost Advisory | GSP | 28 hr |
| Nov 4, 2:15 PM EDT | Frost Advisory | GSP | 19 hr |
| Nov 5, 2:48 PM EDT | Frost Advisory | GSP | 18 hr |
| Nov 6, 2:14 PM EST | Frost Advisory | GSP | 18 hr |
| Nov 7, 2:42 PM EST | Frost Advisory | GSP | 18 hr |
| Nov 9, 2:40 PM EST | Frost Advisory | GSP | 18 hr |
| Nov 11, 3:26 PM EST | Frost Advisory | GSP | 18 hr |
| Nov 11, 3:26 PM EST | Freeze Watch | GSP | 24 hr |
| Nov 12, 3:25 PM EST | Freeze Warning | GSP | 17 hr |
| Nov 18, 3:22 PM EST | Red Flag Warning | GSP | 33 hr |
| Nov 19, 3:40 AM EST | Wind Advisory | GSP | 51 hr |
| Nov 25, 6:43 AM EST | Dense Fog Advisory | GSP | 3 hr |
| Nov 30, 3:00 PM EST | Special Weather Statement | GSP | 30 min |
| Nov 30, 3:59 PM EST | Severe Thunderstorm Warning | GSP | 46 min |
| Dec 16, 2:44 PM EST | Freezing Rain Advisory | GSP | 20 hr |
| Dec 28, 2:30 PM EST | Wind Advisory | GSP | 52 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 archive20152017
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.