Alert archive / West Virginia / Mason County
Weather alerts in Mason County, West Virginia, 2011
170 weather alerts in 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Mason County and its neighbors
Each county as a circle sized by its count in 2011. Tap one for its archive.
- Alerts
- 170
- Warnings
- 41
- Watches
- 34
- Advisories
- 20
- Busiest month
- April42 alerts
- Busiest day
- May 10, 20119 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 1 tornado warnings covering Mason County in 2011 had a tornado report inside them.
Mason County, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 29 | 19 | 34% | 1 | 100% | 46 min |
| Flash flood warnings | 3 | 2 | 33% | 0 |
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 6, 4:00 AM EST | Winter Weather Advisory | RLX | 3 days |
| Jan 10, 3:54 AM EST | Winter Weather Advisory | RLX | 3 days |
| Jan 19, 5:16 AM EST | Winter Weather Advisory | RLX | 57 hr |
| Jan 20, 3:36 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Jan 25, 3:28 PM EST | Winter Weather Advisory | RLX | 30 hr |
| Jan 27, 1:57 PM EST | Winter Weather Advisory | RLX | 22 hr |
| Feb 1, 3:47 PM EST | Wind Advisory | RLX | 27 hr |
| Feb 23, 4:23 AM EST | Flood Watch | RLX | 51 hr |
| Feb 25, 6:54 AM EST | Special Weather Statement | RLX | 111 min |
| Feb 27, 2:34 AM EST | Flood Watch | RLX | 43 hr |
| Feb 28, 5:31 AM EST | Mesoscale Discussion | SPC | 29 min |
| Feb 28, 5:47 AM EST | Tornado Watch | SPC | 5 hr |
| Feb 28, 6:42 AM EST | Severe Thunderstorm Warning | RLX | 63 min |
| Feb 28, 7:13 AM EST | Severe Thunderstorm Warning | RLX | 62 min |
| Mar 4, 3:00 PM EST | Flood Watch | RLX | 48 hr |
| Mar 7, 12:25 PM EST | River Flood Warning | RLX | 8 days |
| Mar 7, 4:01 PM EST | Flood Watch | RLX | 3 days |
| Mar 10, 12:31 AM EST | River Flood Warning | RLX | 5 days |
| Mar 10, 12:59 PM EST | River Flood Warning | RLX | 4 days |
| Mar 10, 12:59 PM EST | River Flood Warning | RLX | 4 days |
| Mar 21, 3:07 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Mar 21, 5:22 PM EDT | Severe Thunderstorm Warning | RLX | 38 min |
| Mar 21, 5:57 PM EDT | Severe Thunderstorm Warning | RLX | 48 min |
| Mar 21, 6:31 PM EDT | Severe Thunderstorm Warning | RLX | 44 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, 2:20 PM EDT | Special Weather Statement | RLX | 40 min |
| Mar 23, 3:54 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Mar 23, 4:58 PM EDT | Severe Thunderstorm Warning | RLX | 47 min |
| Mar 23, 5:06 PM EDT | Severe Thunderstorm Warning | RLX | 69 min |
| Mar 23, 11:42 PM EDT | Severe Thunderstorm Warning | RLX | 33 min |
| Mar 24, 12:09 AM EDT | Special Weather Statement | RLX | 51 min |
| Mar 26, 8:46 PM EDT | Special Weather Statement | RLX | 3 hr |
| Apr 3, 2:55 PM EDT | Wind Advisory | RLX | 35 hr |
| Apr 4, 3:05 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 4, 3:43 PM EDT | Special Weather Statement | RLX | 47 min |
| Apr 4, 4:33 PM EDT | Special Weather Statement | RLX | 27 min |
| Apr 4, 5:22 PM EDT | Severe Thunderstorm Warning | RLX | 38 min |
| Apr 4, 6:00 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Apr 4, 6:01 PM EDT | Severe Thunderstorm Warning | RLX | 44 min |
| Apr 8, 1:02 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Apr 8, 3:28 PM EDT | Special Weather Statement | RLX | 62 min |
| Apr 8, 3:34 PM EDT | Severe Thunderstorm Warning | RLX | 41 min |
| Apr 8, 4:16 PM EDT | Severe Thunderstorm Warning | RLX | 59 min |
| Apr 11, 12:08 PM EDT | Flash Flood Watch | RLX | 33 hr |
| 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, 7:26 AM EDT | Special Weather Statement | RLX | 34 min |
| Apr 16, 8:26 AM EDT | Flash Flood Warning | RLX | 3 hr |
| Apr 16, 11:03 AM EDT | Areal Flood Warning | RLX | 87 min |
| Apr 19, 4:48 AM EDT | Flash Flood Watch | RLX | 13 hr |
| Apr 19, 6:47 AM EDT | Special Weather Statement | RLX | 43 min |
| Apr 19, 7:20 AM EDT | Special Weather Statement | RLX | 25 min |
| Apr 20, 1:59 AM EDT | Tornado Watch | SPC | 5 hr |
| Apr 20, 3:11 AM EDT | Severe Thunderstorm Warning | RLX | 64 min |
| Apr 20, 3:20 AM EDT | Mesoscale Discussion | SPC | 85 min |
| Apr 21, 4:04 AM EDT | Flash Flood Watch | RLX | 4 days |
| Apr 23, 7:35 AM EDT | Special Weather Statement | RLX | 55 min |
| Apr 23, 3:56 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Apr 23, 4:39 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Apr 23, 5:12 PM EDT | Severe Thunderstorm Warning | RLX | 63 min |
| Apr 23, 5:34 PM EDT | Tornado Warning | RLX | 26 min |
| Apr 24, 5:29 AM EDT | Special Weather Statement | RLX | 76 min |
| Apr 25, 10:28 PM EDT | Severe Thunderstorm Warning | RLX | 47 min |
| Apr 25, 11:07 PM EDT | Severe Thunderstorm Warning | RLX | 23 min |
| Apr 25, 11:28 PM EDT | Special Weather Statement | RLX | 32 min |
| Apr 26, 2:09 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 27, 3:40 AM EDT | Flash Flood Watch | RLX | 28 hr |
| Apr 27, 9:39 AM EDT | Mesoscale Discussion | SPC | 66 min |
| Apr 27, 12:39 PM EDT | Special Weather Statement | RLX | 36 min |
| Apr 27, 5:38 PM EDT | Mesoscale Discussion | SPC | 37 min |
| Apr 27, 5:44 PM EDT | Tornado Watch | SPC | 7 hr |
| Apr 28, 12:14 AM EDT | Special Weather Statement | RLX | 3 hr |
| Apr 28, 8:22 PM EDT | Special Weather Statement | RLX | 68 min |
| May 4, 3:18 PM EDT | Frost Advisory | RLX | 18 hr |
| May 10, 1:10 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 10, 4:32 PM EDT | Mesoscale Discussion | SPC | 88 min |
| May 10, 4:49 PM EDT | Special Weather Statement | RLX | 26 min |
| May 10, 5:08 PM EDT | Severe Thunderstorm Warning | RLX | 52 min |
| May 10, 5:24 PM EDT | Severe Thunderstorm Warning | RLX | 66 min |
| May 10, 5:49 PM EDT | Flash Flood Warning | RLX | 10 hr |
| May 10, 6:22 PM EDT | Severe Thunderstorm Warning | RLX | 36 min |
| May 10, 7:17 PM EDT | Mesoscale Discussion | SPC | 28 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 11, 4:13 AM EDT | Special Weather Statement | RLX | 47 min |
| May 14, 3:44 PM EDT | Special Weather Statement | RLX | 31 min |
| May 14, 6:02 PM EDT | Special Weather Statement | RLX | 88 min |
| May 22, 4:44 PM EDT | Mesoscale Discussion | SPC | 61 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 23, 7:20 PM EDT | Mesoscale Discussion | SPC | 85 min |
| May 23, 8:31 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| May 23, 9:36 PM EDT | Severe Thunderstorm Warning | RLX | 54 min |
| May 23, 9:58 PM EDT | Flash Flood Watch | RLX | 5 hr |
| Jun 4, 5:51 PM EDT | Mesoscale Discussion | SPC | 24 min |
| Jun 4, 6:13 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 4, 8:58 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 4, 9:46 PM EDT | Special Weather Statement | RLX | 59 min |
| Jun 5, 12:08 AM EDT | Mesoscale Discussion | SPC | 67 min |
| Jun 7, 10:32 AM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 7, 1:50 PM EDT | Severe Thunderstorm Warning | RLX | 55 min |
| Jun 9, 12:53 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 9, 11:18 PM EDT | Flash Flood Watch | RLX | 24 hr |
| Jun 10, 8:34 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Jun 11, 1:40 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 15, 4:27 PM EDT | Special Weather Statement | RLX | 33 min |
| Jun 17, 7:05 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jun 19, 6:27 PM EDT | Special Weather Statement | RLX | 78 min |
| Jun 20, 12:24 PM EDT | Special Weather Statement | RLX | 2 hr |
| Jun 23, 12:33 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jun 23, 1:37 PM EDT | Tornado Watch | SPC | 7 hr |
| Jun 23, 3:31 PM EDT | Severe Thunderstorm Warning | RLX | 44 min |
| Jun 23, 4:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jul 8, 8:58 AM EDT | Special Weather Statement | RLX | 47 min |
| Jul 11, 1:42 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Jul 11, 2:16 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 11, 3:43 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jul 11, 4:12 PM EDT | Special Weather Statement | RLX | 63 min |
| Jul 11, 8:51 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Jul 11, 9:22 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jul 11, 11:02 PM EDT | Special Weather Statement | RLX | 28 min |
| Jul 11, 11:31 PM EDT | Special Weather Statement | RLX | 74 min |
| Jul 12, 4:13 AM EDT | Heat Advisory | RLX | 14 hr |
| Jul 18, 3:06 PM EDT | Heat Advisory | RLX | 29 hr |
| 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, 2:46 PM EDT | Heat Advisory | RLX | 29 hr |
| Jul 20, 11:33 AM EDT | Excessive Heat Warning | RLX | 32 hr |
| Jul 21, 2:47 PM EDT | Heat Advisory | RLX | 29 hr |
| Jul 22, 12:20 PM EDT | Excessive Heat Warning | RLX | 8 hr |
| Jul 22, 5:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 4:38 AM EDT | Heat Advisory | RLX | 15 hr |
| Jul 23, 3:18 PM EDT | Heat Advisory | RLX | 29 hr |
| Jul 23, 3:43 PM EDT | Flash Flood Warning | RLX | 2 hr |
| Jul 28, 2:30 PM EDT | Heat Advisory | RLX | 6 hr |
| Jul 28, 3:26 PM EDT | Heat Advisory | RLX | 29 hr |
| Aug 3, 4:28 AM EDT | Mesoscale Discussion | SPC | 92 min |
| Aug 3, 8:21 AM EDT | Mesoscale Discussion | SPC | 84 min |
| Aug 6, 11:38 AM EDT | Flash Flood Watch | RLX | 10 hr |
| Aug 7, 7:07 AM EDT | Flash Flood Watch | RLX | 5 hr |
| Aug 7, 7:48 AM EDT | Special Weather Statement | RLX | 87 min |
| Aug 7, 2:45 PM EDT | Flash Flood Watch | RLX | 12 hr |
| Aug 7, 7:36 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Aug 15, 4:55 PM EDT | Special Weather Statement | RLX | 65 min |
| Aug 21, 1:43 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Aug 21, 3:35 PM EDT | Severe Thunderstorm Warning | RLX | 55 min |
| Aug 21, 4:31 PM EDT | Severe Thunderstorm Warning | RLX | 19 min |
| Aug 21, 4:41 PM EDT | Severe Thunderstorm Warning | RLX | 34 min |
| Aug 21, 5:15 PM EDT | Severe Thunderstorm Warning | RLX | 30 min |
| Aug 24, 8:17 AM EDT | Special Weather Statement | RLX | 118 min |
| Aug 25, 8:28 AM EDT | Special Weather Statement | RLX | 47 min |
| Aug 25, 9:24 AM EDT | Special Weather Statement | RLX | 66 min |
| Sep 2, 3:55 AM EDT | Heat Advisory | RLX | 15 hr |
| Sep 3, 3:18 AM EDT | Heat Advisory | RLX | 17 hr |
| Sep 4, 3:47 PM EDT | Flash Flood Watch | RLX | 13 hr |
| Sep 5, 5:08 AM EDT | Flash Flood Watch | RLX | 47 hr |
| Sep 14, 7:29 PM EDT | Special Weather Statement | RLX | 46 min |
| Sep 14, 7:37 PM EDT | Severe Thunderstorm Warning | RLX | 38 min |
| Sep 14, 10:01 PM EDT | Special Weather Statement | RLX | 59 min |
| Sep 26, 1:06 PM EDT | Severe Thunderstorm Warning | RLX | 39 min |
| Sep 26, 1:43 PM EDT | Severe Thunderstorm Warning | RLX | 47 min |
| Sep 26, 2:16 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Oct 21, 4:00 AM EDT | Frost Advisory | RLX | 29 hr |
| Oct 22, 4:22 AM EDT | Frost Advisory | RLX | 29 hr |
| Oct 29, 2:26 PM EDT | Freeze Warning | RLX | 19 hr |
| Nov 15, 12:18 AM EST | Special Weather Statement | RLX | 42 min |
| Nov 22, 3:33 AM EST | Flash Flood Watch | RLX | 27 hr |
| Dec 27, 3:25 PM EST | Special Weather Statement | RLX | 110 min |
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 | 29 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 12 |
| Tornado Watch | 6 |
| Mesoscale Discussion | 38 |
| Special Weather Statement | 37 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Warning | 3 |
| River Flood Warning | 4 |
| Flash Flood Watch | 12 |
| Flood Watch | 4 |
| Winter | |
| Winter Weather Advisory | 5 |
| Heat | |
| Excessive Heat Warning | 2 |
| Heat Advisory | 10 |
| Cold | |
| Freeze Warning | 1 |
| Frost Advisory | 3 |
| Wind and dust | |
| Wind Advisory | 2 |
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.