Alert archive / West Virginia / Greenbrier County
Weather alerts in Greenbrier County, West Virginia, 2017
105 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Greenbrier County and its neighbors
Each county as a circle sized by its count in 2017. Tap one for its archive.
- Alerts
- 105
- Warnings
- 11
- Watches
- 7
- Advisories
- 37
- Busiest month
- May24 alerts
- Busiest day
- May 20, 20175 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Greenbrier County, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 5 | 5 | 0% | 7 | 71% | 21 min |
| Flash flood warnings | 1 | 1 | 0% | 0 |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Blacksburg, VA: tornado warnings | 17 | 4 | 76% | 12 | 58% | 17 min |
| NWS Blacksburg, VA: severe thunderstorm warnings | 167 | 140 | 16% | 462 | 74% | 19 min |
| NWS Blacksburg, VA: flash flood warnings | 24 | 15 | 38% | 53 | 72% | 80 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 4, 3:11 PM EST | Winter Weather Advisory | RNK | 37 hr |
| Jan 6, 3:47 PM EST | Wind Chill Advisory | RNK | 50 hr |
| Jan 6, 8:56 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 10, 2:43 PM EST | Freezing Rain Advisory | RNK | 10 hr |
| Jan 13, 4:22 AM EST | Freezing Rain Advisory | RNK | 31 hr |
| Jan 21, 3:57 AM EST | Dense Fog Advisory | RNK | 8 hr |
| Jan 28, 3:59 PM EST | Winter Weather Advisory | RNK | 44 hr |
| Jan 29, 9:50 PM EST | Special Weather Statement | RNK | 115 min |
| Feb 8, 4:29 AM EST | Winter Weather Advisory | RNK | 39 hr |
| Feb 9, 7:10 PM EST | Wind Chill Advisory | RNK | 13 hr |
| Feb 12, 3:16 AM EST | High Wind Warning | RNK | 34 hr |
| Feb 12, 3:16 AM EST | Wind Advisory | RNK | 34 hr |
| Feb 22, 10:30 PM EST | Dense Fog Advisory | RNK | 12 hr |
| Feb 25, 7:14 AM EST | Special Weather Statement | RNK | 61 min |
| Mar 1, 9:44 AM EST | Mesoscale Discussion | SPC | 91 min |
| Mar 1, 10:35 AM EST | Severe Thunderstorm Warning | RNK | 55 min |
| Mar 1, 10:38 AM EST | Severe Thunderstorm Watch | SPC | 4 hr |
| Mar 1, 11:21 AM EST | Severe Thunderstorm Warning | RNK | 39 min |
| Mar 1, 7:04 PM EST | Special Weather Statement | RNK | 41 min |
| Mar 8, 12:00 AM EST | Special Weather Statement | RNK | 45 min |
| Mar 12, 4:04 PM EDT | Winter Storm Watch | RNK | 7 hr |
| Mar 12, 10:48 PM EDT | Winter Storm Warning | RNK | 57 hr |
| Mar 14, 3:20 PM EDT | Wind Chill Advisory | RNK | 17 hr |
| Mar 15, 4:22 AM EDT | Wind Advisory | RNK | 15 hr |
| Mar 15, 8:13 AM EDT | Wind Chill Advisory | RNK | 107 min |
| Mar 15, 2:06 PM EDT | Wind Chill Advisory | RNK | 19 hr |
| Mar 15, 2:06 PM EDT | Winter Weather Advisory | RNK | 19 hr |
| Mar 22, 10:00 AM EDT | Special Weather Statement | RNK | 15 min |
| Mar 31, 3:02 PM EDT | Special Weather Statement | RNK | 28 min |
| Mar 31, 3:41 PM EDT | Special Weather Statement | RNK | 34 min |
| Apr 5, 3:39 PM EDT | Wind Advisory | RNK | 48 hr |
| Apr 6, 1:22 AM EDT | Special Weather Statement | RNK | 53 min |
| Apr 6, 3:26 AM EDT | Winter Weather Advisory | RNK | 35 hr |
| Apr 6, 8:27 AM EDT | Special Weather Statement | RNK | 48 min |
| Apr 19, 10:27 PM EDT | Dense Fog Advisory | RNK | 10 hr |
| Apr 20, 2:36 PM EDT | Special Weather Statement | RNK | 39 min |
| Apr 21, 4:11 PM EDT | Special Weather Statement | RNK | 34 min |
| Apr 21, 4:19 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Apr 28, 4:35 AM EDT | Dense Fog Advisory | RNK | 4 hr |
| May 1, 2:23 PM EDT | Wind Advisory | RNK | 26 hr |
| May 1, 2:29 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 1, 3:46 PM EDT | Special Weather Statement | RNK | 59 min |
| May 1, 4:48 PM EDT | Special Weather Statement | RNK | 57 min |
| May 3, 2:51 PM EDT | Wind Advisory | RNK | 31 hr |
| May 4, 9:03 PM EDT | Special Weather Statement | RNK | 87 min |
| May 7, 4:24 AM EDT | Frost Advisory | RNK | 29 hr |
| May 7, 4:24 AM EDT | Freeze Watch | RNK | 10 hr |
| May 7, 2:42 PM EDT | Freeze Warning | RNK | 18 hr |
| May 11, 6:19 AM EDT | Flood Watch | RNK | 30 hr |
| May 11, 6:19 AM EDT | Flash Flood Watch | RNK | 16 hr |
| May 12, 12:37 PM EDT | Flood Watch | RNK | 13 hr |
| May 19, 10:21 PM EDT | Special Weather Statement | RNK | 54 min |
| May 20, 1:06 PM EDT | Special Weather Statement | RNK | 54 min |
| May 20, 2:27 PM EDT | Special Weather Statement | RNK | 63 min |
| May 20, 5:42 PM EDT | Severe Thunderstorm Warning | RNK | 37 min |
| May 20, 6:21 PM EDT | Special Weather Statement | RNK | 24 min |
| May 24, 4:27 AM EDT | Flash Flood Watch | RNK | 20 hr |
| May 25, 3:19 AM EDT | Areal Flood Warning | RNK | 6 hr |
| May 25, 9:13 AM EDT | Areal Flood Warning | RNK | 3 hr |
| May 25, 12:08 PM EDT | Areal Flood Advisory | RNK | 3 hr |
| May 25, 1:08 PM EDT | Wind Advisory | RNK | 23 hr |
| May 27, 7:51 PM EDT | Special Weather Statement | RNK | 54 min |
| May 31, 12:45 PM EDT | Special Weather Statement | RNK | 60 min |
| Jun 5, 1:48 AM EDT | Special Weather Statement | RNK | 57 min |
| Jun 5, 10:23 AM EDT | Special Weather Statement | RNK | 52 min |
| Jun 5, 1:52 PM EDT | Areal Flood Advisory | RNK | 6 hr |
| Jun 13, 12:18 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 14, 2:20 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 14, 4:51 PM EDT | Special Weather Statement | RNK | 24 min |
| Jun 15, 6:50 PM EDT | Areal Flood Advisory | RNK | 6 hr |
| Jun 19, 12:44 PM EDT | Special Weather Statement | RNK | 31 min |
| Jun 23, 9:24 PM EDT | Special Weather Statement | RNK | 66 min |
| Jun 23, 11:14 PM EDT | Special Weather Statement | RNK | 61 min |
| Jun 24, 12:13 AM EDT | Special Weather Statement | RNK | 47 min |
| Jul 5, 7:39 PM EDT | Special Weather Statement | RNK | 36 min |
| Jul 7, 3:35 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jul 7, 10:33 PM EDT | Special Weather Statement | RNK | 57 min |
| Jul 18, 2:31 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Jul 18, 5:28 PM EDT | Special Weather Statement | RNK | 62 min |
| Jul 18, 6:24 PM EDT | Severe Thunderstorm Warning | RNK | 66 min |
| Jul 18, 8:51 PM EDT | Areal Flood Advisory | RNK | 6 hr |
| Jul 21, 1:14 PM EDT | Special Weather Statement | RNK | 61 min |
| Jul 23, 12:09 AM EDT | Special Weather Statement | RNK | 66 min |
| Jul 28, 3:42 PM EDT | Special Weather Statement | RNK | 63 min |
| Aug 1, 3:31 PM EDT | Special Weather Statement | RNK | 29 min |
| Aug 1, 3:49 PM EDT | Special Weather Statement | RNK | 26 min |
| Aug 1, 4:19 PM EDT | Special Weather Statement | RNK | 26 min |
| Aug 4, 5:03 PM EDT | Special Weather Statement | RNK | 27 min |
| Aug 17, 6:07 PM EDT | Special Weather Statement | RNK | 53 min |
| Aug 17, 9:11 PM EDT | Special Weather Statement | RNK | 64 min |
| Oct 16, 4:48 AM EDT | Frost Advisory | RNK | 28 hr |
| Oct 17, 4:03 AM EDT | Frost Advisory | RNK | 29 hr |
| Oct 23, 4:27 PM EDT | Special Weather Statement | RNK | 108 min |
| Oct 23, 6:16 PM EDT | Special Weather Statement | RNK | 89 min |
| Oct 23, 6:58 PM EDT | Flash Flood Warning | RNK | 6 hr |
| Oct 23, 7:28 PM EDT | Severe Thunderstorm Warning | RNK | 62 min |
| Oct 28, 8:33 PM EDT | Special Weather Statement | RNK | 57 min |
| Nov 18, 3:16 AM EST | Wind Advisory | RNK | 33 hr |
| Dec 9, 3:47 PM EST | Winter Weather Advisory | RNK | 18 hr |
| Dec 11, 2:39 PM EST | Winter Weather Advisory | RNK | 36 hr |
| Dec 12, 3:34 AM EST | Wind Chill Advisory | RNK | 29 hr |
| Dec 13, 1:41 PM EST | Wind Advisory | RNK | 22 hr |
| Dec 24, 4:51 AM EST | Winter Weather Advisory | RNK | 31 hr |
| Dec 27, 1:34 PM EST | Wind Chill Advisory | RNK | 19 hr |
| Dec 30, 5:17 AM EST | Wind Chill Advisory | RNK | 53 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 archive20162018
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.