Alert archive / West Virginia / Nicholas County
Weather alerts in Nicholas County, West Virginia, 2011
108 weather alerts in 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Nicholas County and its neighbors
Each county as a circle sized by its count in 2011. Tap one for its archive.
- Alerts
- 108
- Warnings
- 30
- Watches
- 17
- Advisories
- 0
- Busiest month
- April31 alerts
- Busiest day
- April 8, 20116 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 Nicholas County in 2011 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 24 minutes after it went out.
Nicholas County, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 1 | 0% | 1 | 100% | 24 min |
| Severe thunderstorm warnings | 25 | 18 | 28% | 7 | 86% | 31 min |
| Flash flood warnings | 4 | 2 | 50% | 1 | 100% | 34 min |
Each office's whole area, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Charleston, WV: tornado warnings | 10 | 1 | 90% | 1 | 100% | 24 min |
| NWS Charleston, WV: severe thunderstorm warnings | 268 | 171 | 36% | 440 | 82% | 24 min |
| NWS Charleston, WV: flash flood warnings | 52 | 24 | 54% | 53 | 91% | 62 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 26, 11:19 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 25, 1:48 AM EST | Mesoscale Discussion | SPC | 27 min |
| Feb 28, 5:47 AM EST | Tornado Watch | SPC | 5 hr |
| Feb 28, 8:27 AM EST | Severe Thunderstorm Warning | RLX | 48 min |
| Feb 28, 8:38 AM EST | Severe Thunderstorm Warning | RLX | 67 min |
| Feb 28, 9:15 AM EST | Severe Thunderstorm Warning | RLX | 30 min |
| Feb 28, 9:29 AM EST | Severe Thunderstorm Warning | RLX | 61 min |
| Mar 21, 3:07 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Mar 21, 7:04 PM EDT | Severe Thunderstorm Warning | RLX | 41 min |
| Mar 21, 10:16 PM EDT | Special Weather Statement | RLX | 29 min |
| Mar 23, 12:02 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Mar 23, 1:13 PM EDT | Tornado Watch | SPC | 7 hr |
| Mar 23, 3:54 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Mar 23, 5:06 PM EDT | Severe Thunderstorm Warning | RLX | 69 min |
| Mar 23, 5:46 PM EDT | Severe Thunderstorm Warning | RLX | 74 min |
| Mar 24, 1:07 AM EDT | Special Weather Statement | RLX | 38 min |
| Mar 26, 8:46 PM EDT | Special Weather Statement | RLX | 3 hr |
| Apr 4, 3:05 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 4, 6:00 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Apr 4, 7:20 PM EDT | Severe Thunderstorm Warning | RLX | 55 min |
| Apr 8, 2:53 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Apr 8, 3:00 PM EDT | Special Weather Statement | RLX | 45 min |
| Apr 8, 3:42 PM EDT | Severe Thunderstorm Warning | RLX | 48 min |
| Apr 8, 4:07 PM EDT | Severe Thunderstorm Warning | RLX | 68 min |
| Apr 8, 4:44 PM EDT | Severe Thunderstorm Warning | RLX | 32 min |
| Apr 8, 5:03 PM EDT | Severe Thunderstorm Warning | RLX | 57 min |
| Apr 11, 12:24 PM EDT | Mesoscale Discussion | SPC | 36 min |
| Apr 11, 12:47 PM EDT | Tornado Watch | SPC | 6 hr |
| Apr 11, 3:44 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Apr 16, 9:51 AM EDT | Special Weather Statement | RLX | 24 min |
| Apr 16, 10:43 AM EDT | Mesoscale Discussion | SPC | 62 min |
| Apr 20, 1:59 AM EDT | Tornado Watch | SPC | 5 hr |
| Apr 20, 3:20 AM EDT | Mesoscale Discussion | SPC | 85 min |
| Apr 23, 4:39 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Apr 23, 6:05 PM EDT | Severe Thunderstorm Warning | RLX | 55 min |
| Apr 23, 6:19 PM EDT | Severe Thunderstorm Warning | RLX | 20 min |
| Apr 23, 6:56 PM EDT | Severe Thunderstorm Warning | RLX | 64 min |
| Apr 25, 5:11 PM EDT | Special Weather Statement | RLX | 34 min |
| Apr 26, 1:49 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Apr 26, 2:09 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 27, 5:44 PM EDT | Tornado Watch | SPC | 7 hr |
| Apr 27, 6:47 PM EDT | Severe Thunderstorm Warning | RLX | 19 min |
| Apr 27, 9:39 PM EDT | Special Weather Statement | RLX | 111 min |
| Apr 27, 9:53 PM EDT | Severe Thunderstorm Warning | RLX | 37 min |
| Apr 27, 10:34 PM EDT | Tornado Warning | RLX | 41 min |
| Apr 28, 12:34 AM EDT | Mesoscale Discussion | SPC | 26 min |
| Apr 28, 12:39 AM EDT | Special Weather Statement | RLX | 3 hr |
| Apr 28, 5:59 AM EDT | Special Weather Statement | RLX | 106 min |
| May 10, 1:10 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 10, 6:00 PM EDT | Severe Thunderstorm Warning | RLX | 45 min |
| May 10, 6:32 PM EDT | Flash Flood Warning | RLX | 119 min |
| May 10, 7:14 PM EDT | Severe Thunderstorm Warning | RLX | 46 min |
| May 10, 7:45 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 10, 11:17 PM EDT | Mesoscale Discussion | SPC | 58 min |
| May 12, 11:04 AM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 12, 1:36 PM EDT | Severe Thunderstorm Warning | RLX | 41 min |
| May 18, 2:43 PM EDT | Special Weather Statement | RLX | 3 hr |
| May 18, 2:55 PM EDT | Flash Flood Warning | RLX | 110 min |
| May 18, 2:56 PM EDT | Special Weather Statement | RLX | 64 min |
| May 18, 3:34 PM EDT | Flash Flood Warning | RLX | 116 min |
| May 22, 5:40 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 22, 7:26 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 24, 12:18 AM EDT | Special Weather Statement | RLX | 42 min |
| May 26, 1:15 PM EDT | Mesoscale Discussion | SPC | 90 min |
| May 26, 1:42 PM EDT | Severe Thunderstorm Watch | SPC | 11 hr |
| May 26, 4:30 PM EDT | Mesoscale Discussion | SPC | 60 min |
| May 26, 7:31 PM EDT | Special Weather Statement | RLX | 59 min |
| May 26, 8:42 PM EDT | Special Weather Statement | RLX | 48 min |
| Jun 5, 1:11 AM EDT | Special Weather Statement | RLX | 34 min |
| Jun 7, 2:45 PM EDT | Severe Thunderstorm Warning | RLX | 60 min |
| Jun 9, 12:53 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 9, 6:17 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Jun 11, 1:14 AM EDT | Special Weather Statement | RLX | 31 min |
| Jun 11, 1:46 AM EDT | Special Weather Statement | RLX | 29 min |
| Jun 20, 2:36 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Jun 21, 2:11 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Jun 22, 12:31 AM EDT | Special Weather Statement | RLX | 59 min |
| Jun 23, 4:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 23, 5:28 PM EDT | Special Weather Statement | RLX | 62 min |
| Jun 23, 9:01 PM EDT | Severe Thunderstorm Warning | RLX | 44 min |
| Jun 24, 12:15 AM EDT | Special Weather Statement | RLX | 45 min |
| Jun 28, 2:35 AM EDT | Special Weather Statement | RLX | 40 min |
| Jul 4, 1:54 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 11, 2:16 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 11, 5:12 PM EDT | Special Weather Statement | RLX | 63 min |
| Jul 11, 5:51 PM EDT | Special Weather Statement | RLX | 54 min |
| Jul 18, 6:14 PM EDT | Mesoscale Discussion | SPC | 31 min |
| Jul 18, 6:26 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 19, 10:00 AM EDT | Special Weather Statement | RLX | 90 min |
| Jul 22, 5:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 22, 8:04 PM EDT | Special Weather Statement | RLX | 26 min |
| Jul 22, 8:26 PM EDT | Special Weather Statement | RLX | 34 min |
| Aug 3, 4:28 AM EDT | Mesoscale Discussion | SPC | 92 min |
| Aug 3, 8:21 AM EDT | Mesoscale Discussion | SPC | 84 min |
| Aug 14, 1:50 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Aug 21, 7:19 PM EDT | Special Weather Statement | RLX | 26 min |
| Aug 21, 7:28 PM EDT | Special Weather Statement | RLX | 17 min |
| Sep 2, 2:31 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Sep 3, 6:21 PM EDT | Severe Thunderstorm Warning | RLX | 39 min |
| Sep 4, 3:15 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Sep 4, 5:50 PM EDT | Flash Flood Warning | RLX | 3 hr |
| Sep 15, 3:02 AM EDT | Severe Thunderstorm Warning | RLX | 43 min |
| Sep 26, 2:16 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Sep 26, 6:02 PM EDT | Severe Thunderstorm Warning | RLX | 43 min |
| Oct 19, 6:08 PM EDT | Special Weather Statement | RLX | 52 min |
| Dec 7, 1:13 PM EST | Special Weather Statement | RLX | 4 hr |
| Dec 7, 2:44 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Dec 7, 5:08 PM EST | Special Weather Statement | RLX | 3 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 | 25 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 12 |
| Tornado Watch | 5 |
| Mesoscale Discussion | 30 |
| Special Weather Statement | 31 |
| Flooding | |
| Flash Flood Warning | 4 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20102012
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.