Alert archive / West Virginia / Mason County
Weather alerts in Mason County, West Virginia, 2010
132 weather alerts in 2010, 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 2010. Tap one for its archive.
- Alerts
- 132
- Warnings
- 36
- Watches
- 27
- Advisories
- 22
- Busiest month
- June24 alerts
- Busiest day
- October 26, 20108 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Mason County, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 19 | 13 | 32% | 11 | 100% | 14 min |
| Flash flood warnings | 2 | 1 | 50% | 1 | 0% |
Each office's whole area, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Charleston, WV: tornado warnings | 11 | 4 | 64% | 16 | 69% | 26 min |
| NWS Charleston, WV: severe thunderstorm warnings | 135 | 87 | 36% | 292 | 79% | 25 min |
| NWS Charleston, WV: flash flood warnings | 58 | 30 | 48% | 120 | 86% | 100 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, 3:17 AM EST | Winter Weather Advisory | RLX | 51 hr |
| Jan 6, 3:47 PM EST | Winter Weather Advisory | RLX | 3 days |
| Jan 26, 3:11 PM EST | River Flood Warning | RLX | 47 hr |
| Jan 29, 3:58 AM EST | Winter Weather Advisory | RLX | 39 hr |
| Feb 4, 4:08 AM EST | Winter Storm Warning | RLX | 61 hr |
| Feb 4, 4:41 PM EST | Winter Weather Advisory | RLX | 22 hr |
| Feb 5, 5:33 PM EST | Areal Flood Warning | RLX | 4 hr |
| Feb 8, 3:50 PM EST | Winter Storm Warning | RLX | 63 hr |
| Feb 13, 3:37 PM EST | Winter Storm Watch | RLX | 23 hr |
| Feb 14, 3:05 PM EST | Winter Weather Advisory | RLX | 5 days |
| Feb 24, 2:33 PM EST | Winter Weather Advisory | RLX | 67 hr |
| Mar 11, 1:06 PM EST | Flood Watch | RLX | 68 hr |
| Mar 12, 11:09 PM EST | Areal Flood Warning | RLX | 8 hr |
| Mar 13, 6:17 AM EST | Areal Flood Warning | RLX | 10 hr |
| Mar 13, 11:29 AM EST | River Flood Warning | RLX | 4 days |
| Apr 2, 12:42 PM EDT | Fire Weather Watch | RLX | 24 hr |
| Apr 3, 7:46 AM EDT | Red Flag Warning | RLX | 12 hr |
| Apr 5, 11:50 PM EDT | Severe Thunderstorm Warning | RLX | 40 min |
| Apr 7, 9:00 AM EDT | Red Flag Warning | RLX | 10 hr |
| Apr 8, 11:00 AM EDT | Mesoscale Discussion | SPC | 90 min |
| Apr 9, 4:31 AM EDT | Freeze Watch | RLX | 10 hr |
| Apr 9, 2:23 PM EDT | Freeze Warning | RLX | 19 hr |
| Apr 16, 12:44 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 16, 1:28 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 16, 4:34 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Apr 16, 4:52 PM EDT | Severe Thunderstorm Warning | RLX | 24 min |
| Apr 16, 6:14 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Apr 17, 3:29 AM EDT | Frost Advisory | RLX | 30 hr |
| Apr 18, 2:28 PM EDT | Frost Advisory | RLX | 19 hr |
| Apr 25, 11:54 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 25, 2:26 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Apr 27, 4:22 AM EDT | Frost Advisory | RLX | 29 hr |
| Apr 27, 3:10 PM EDT | Freeze Warning | RLX | 18 hr |
| Apr 28, 2:51 PM EDT | Frost Advisory | RLX | 18 hr |
| Apr 30, 3:56 PM EDT | Flash Flood Watch | RLX | 61 hr |
| May 2, 2:18 PM EDT | Mesoscale Discussion | SPC | 57 min |
| May 2, 3:32 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 2, 7:12 PM EDT | Mesoscale Discussion | SPC | 93 min |
| May 2, 8:29 PM EDT | Areal Flood Warning | RLX | 9 hr |
| May 2, 9:19 PM EDT | Areal Flood Warning | RLX | 12 hr |
| May 9, 3:11 AM EDT | Frost Advisory | RLX | 30 hr |
| May 12, 9:32 AM EDT | Flash Flood Watch | RLX | 13 hr |
| May 12, 10:16 AM EDT | Mesoscale Discussion | SPC | 119 min |
| May 14, 2:29 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 14, 4:12 PM EDT | Severe Thunderstorm Warning | RLX | 63 min |
| May 14, 4:38 PM EDT | Severe Thunderstorm Warning | RLX | 43 min |
| May 14, 5:38 PM EDT | Severe Thunderstorm Warning | RLX | 45 min |
| May 16, 4:45 AM EDT | Flash Flood Watch | RLX | 69 hr |
| Jun 2, 1:09 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Jun 2, 9:49 PM EDT | Severe Thunderstorm Warning | RLX | 56 min |
| Jun 2, 10:49 PM EDT | Special Weather Statement | RLX | 56 min |
| Jun 5, 2:08 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 5, 4:21 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Jun 6, 7:51 AM EDT | Tornado Watch | SPC | 7 hr |
| Jun 6, 10:00 AM EDT | Special Weather Statement | RLX | 60 min |
| Jun 6, 10:37 AM EDT | Special Weather Statement | RLX | 68 min |
| Jun 6, 11:02 AM EDT | Special Weather Statement | RLX | 73 min |
| Jun 9, 3:50 AM EDT | Flash Flood Watch | RLX | 16 hr |
| Jun 9, 10:30 AM EDT | Special Weather Statement | RLX | 45 min |
| Jun 12, 9:54 PM EDT | Flash Flood Watch | RLX | 4 days |
| Jun 15, 12:10 AM EDT | Severe Thunderstorm Warning | RLX | 65 min |
| Jun 15, 8:41 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Jun 15, 9:21 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 15, 11:26 PM EDT | Special Weather Statement | RLX | 64 min |
| Jun 15, 11:28 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Jun 16, 1:39 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jun 23, 4:18 PM EDT | Severe Thunderstorm Warning | RLX | 57 min |
| Jun 23, 5:33 PM EDT | Special Weather Statement | RLX | 57 min |
| Jun 24, 11:28 AM EDT | Mesoscale Discussion | SPC | 62 min |
| Jun 24, 11:45 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 27, 12:52 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 27, 9:43 PM EDT | Flash Flood Watch | RLX | 21 hr |
| Jul 16, 12:34 PM EDT | Special Weather Statement | RLX | 56 min |
| Jul 17, 6:55 AM EDT | Mesoscale Discussion | SPC | 95 min |
| Jul 17, 7:15 AM EDT | Special Weather Statement | RLX | 60 min |
| Jul 18, 4:36 AM EDT | Special Weather Statement | RLX | 39 min |
| Jul 18, 4:45 AM EDT | Severe Thunderstorm Warning | RLX | 45 min |
| Jul 18, 5:43 AM EDT | Special Weather Statement | RLX | 32 min |
| Jul 20, 10:19 AM EDT | Flash Flood Watch | RLX | 34 hr |
| Jul 20, 6:13 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jul 20, 10:06 PM EDT | Flash Flood Warning | RLX | 8 hr |
| Jul 21, 12:02 AM EDT | Flash Flood Warning | RLX | 6 hr |
| Jul 21, 6:07 AM EDT | Areal Flood Warning | RLX | 6 hr |
| Jul 23, 8:49 AM EDT | Heat Advisory | RLX | 11 hr |
| Jul 25, 3:36 AM EDT | Flash Flood Watch | RLX | 19 hr |
| Jul 25, 12:11 PM EDT | Special Weather Statement | RLX | 49 min |
| Jul 25, 12:19 PM EDT | Severe Thunderstorm Warning | RLX | 56 min |
| Jul 25, 12:50 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Aug 4, 5:32 AM EDT | Special Weather Statement | RLX | 58 min |
| Aug 4, 1:58 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Aug 4, 2:18 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 4, 3:38 PM EDT | Severe Thunderstorm Warning | RLX | 52 min |
| Aug 4, 3:52 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Aug 4, 4:29 PM EDT | Severe Thunderstorm Warning | RLX | 61 min |
| Aug 4, 5:35 PM EDT | Severe Thunderstorm Warning | RLX | 55 min |
| Aug 4, 9:26 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Aug 4, 10:08 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 4, 10:15 PM EDT | Flash Flood Watch | RLX | 19 hr |
| Aug 4, 11:52 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Aug 5, 8:51 AM EDT | Mesoscale Discussion | SPC | 114 min |
| Aug 5, 10:38 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 5, 12:34 PM EDT | Severe Thunderstorm Warning | RLX | 71 min |
| Aug 11, 12:39 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 11, 3:06 PM EDT | Special Weather Statement | RLX | 69 min |
| Aug 11, 3:32 PM EDT | Special Weather Statement | RLX | 58 min |
| Aug 11, 4:35 PM EDT | Special Weather Statement | RLX | 3 hr |
| Aug 14, 1:15 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 14, 4:23 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 14, 6:01 PM EDT | Flash Flood Watch | RLX | 10 hr |
| Aug 14, 7:04 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Aug 14, 9:34 PM EDT | Severe Thunderstorm Warning | RLX | 71 min |
| Aug 21, 8:22 PM EDT | Special Weather Statement | RLX | 53 min |
| Oct 16, 3:35 AM EDT | Frost Advisory | RLX | 29 hr |
| Oct 19, 2:45 PM EDT | Frost Advisory | RLX | 18 hr |
| Oct 21, 2:56 PM EDT | Frost Advisory | RLX | 18 hr |
| Oct 22, 2:39 PM EDT | Frost Advisory | RLX | 18 hr |
| Oct 26, 3:42 AM EDT | Wind Advisory | RLX | 16 hr |
| Oct 26, 1:09 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Oct 26, 1:36 PM EDT | Tornado Watch | SPC | 7 hr |
| Oct 26, 3:35 PM EDT | Severe Thunderstorm Warning | RLX | 25 min |
| Oct 26, 3:47 PM EDT | Severe Thunderstorm Warning | RLX | 43 min |
| Oct 26, 4:02 PM EDT | Severe Thunderstorm Warning | RLX | 43 min |
| Oct 26, 4:30 PM EDT | Severe Thunderstorm Warning | RLX | 30 min |
| Oct 26, 5:45 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Nov 16, 1:52 PM EST | Wind Advisory | RLX | 25 hr |
| Nov 16, 3:42 PM EST | Special Weather Statement | RLX | 63 min |
| Dec 3, 2:07 PM EST | Winter Weather Advisory | RLX | 38 hr |
| Dec 11, 4:05 PM EST | Winter Weather Advisory | RLX | 54 hr |
| Dec 14, 3:40 PM EST | Winter Weather Advisory | RLX | 50 hr |
| Dec 15, 4:32 PM EST | Winter Storm Warning | RLX | 25 hr |
| Dec 16, 4:17 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 29, 3:05 PM EST | Freezing Rain Advisory | RLX | 21 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 archive20092011
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.