Alert archive / West Virginia / Jefferson County
Weather alerts in Jefferson County, West Virginia, 2013
134 weather alerts in 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Jefferson County and its neighbors
Each county as a circle sized by its count in 2013. Tap one for its archive.
- Alerts
- 134
- Warnings
- 37
- Watches
- 27
- Advisories
- 24
- Busiest month
- June35 alerts
- Busiest day
- June 13, 201311 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 Jefferson County in 2013 had a tornado report inside them.
Jefferson County, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 20 | 12 | 40% | 7 | 100% | 27 min |
| Flash flood warnings | 1 | 1 | 0% | 0 |
Each office's whole area, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Baltimore/Washington: tornado warnings | 22 | 9 | 59% | 21 | 62% | 11 min |
| NWS Baltimore/Washington: severe thunderstorm warnings | 210 | 141 | 33% | 495 | 74% | 21 min |
| NWS Baltimore/Washington: flash flood warnings | 81 | 51 | 37% | 124 | 78% | 74 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 11, 4:39 PM EST | Dense Fog Advisory | LWX | 19 hr |
| Jan 12, 7:27 PM EST | Dense Fog Advisory | LWX | 18 hr |
| Jan 15, 1:13 PM EST | Winter Weather Advisory | LWX | 22 hr |
| Jan 24, 7:52 PM EST | Winter Weather Advisory | LWX | 46 hr |
| Jan 27, 4:02 AM EST | Winter Weather Advisory | LWX | 32 hr |
| Jan 29, 2:54 PM EST | Wind Advisory | LWX | 47 hr |
| Jan 30, 4:07 AM EST | Flash Flood Watch | LWX | 21 hr |
| Jan 30, 10:19 AM EST | Mesoscale Discussion | SPC | 86 min |
| Jan 30, 12:54 PM EST | Mesoscale Discussion | SPC | 96 min |
| Jan 30, 1:14 PM EST | Special Weather Statement | LWX | 46 min |
| Jan 30, 1:49 PM EST | Special Weather Statement | LWX | 26 min |
| Jan 30, 9:38 PM EST | Mesoscale Discussion | SPC | 67 min |
| Jan 30, 9:50 PM EST | River Flood Watch | LWX | 5 hr |
| Jan 31, 2:32 AM EST | River Flood Warning | LWX | 26 hr |
| Jan 31, 2:46 AM EST | River Flood Watch | LWX | 7 hr |
| Jan 31, 10:00 AM EST | River Flood Warning | LWX | 38 hr |
| Feb 7, 3:09 PM EST | Winter Weather Advisory | LWX | 19 hr |
| Feb 8, 1:26 PM EST | Wind Advisory | LWX | 17 hr |
| Feb 22, 3:27 AM EST | Winter Weather Advisory | LWX | 30 hr |
| Feb 25, 2:34 PM EST | Winter Weather Advisory | LWX | 27 hr |
| Mar 4, 3:11 AM EST | Winter Storm Watch | LWX | 36 hr |
| Mar 4, 8:48 PM EST | Winter Storm Warning | LWX | 42 hr |
| Mar 5, 10:52 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Mar 6, 3:25 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Mar 17, 3:27 PM EDT | Winter Weather Advisory | LWX | 17 hr |
| Mar 18, 8:46 AM EDT | Winter Weather Advisory | LWX | 17 hr |
| Mar 19, 3:02 AM EDT | Freezing Rain Advisory | LWX | 3 hr |
| Mar 23, 8:45 PM EDT | Winter Storm Warning | LWX | 39 hr |
| Mar 24, 4:26 AM EDT | Winter Weather Advisory | LWX | 38 hr |
| Mar 25, 5:31 AM EDT | Mesoscale Discussion | SPC | 6 hr |
| Apr 2, 3:32 PM EDT | Fire Weather Watch | LWX | 13 hr |
| Apr 3, 4:30 AM EDT | Red Flag Warning | LWX | 16 hr |
| Apr 16, 11:17 PM EDT | Special Weather Statement | LWX | 43 min |
| Apr 19, 1:27 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Apr 19, 2:31 PM EDT | Tornado Watch | SPC | 7 hr |
| Apr 19, 4:36 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Apr 19, 5:33 PM EDT | Special Weather Statement | LWX | 57 min |
| Apr 24, 3:36 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Apr 24, 6:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 7, 9:44 PM EDT | River Flood Warning | LWX | 62 hr |
| May 10, 6:55 PM EDT | Special Weather Statement | LWX | 35 min |
| May 10, 7:32 PM EDT | Severe Thunderstorm Warning | LWX | 43 min |
| May 11, 1:44 PM EDT | Mesoscale Discussion | SPC | 91 min |
| May 12, 1:53 PM EDT | Freeze Watch | LWX | 25 hr |
| May 12, 4:35 PM EDT | Frost Advisory | LWX | 15 hr |
| May 13, 3:15 PM EDT | Freeze Warning | LWX | 17 hr |
| May 22, 3:53 PM EDT | Mesoscale Discussion | SPC | 67 min |
| May 22, 6:20 PM EDT | Mesoscale Discussion | SPC | 85 min |
| May 22, 6:23 PM EDT | Severe Thunderstorm Warning | LWX | 37 min |
| May 23, 3:37 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Jun 2, 3:08 PM EDT | Severe Thunderstorm Warning | LWX | 37 min |
| Jun 2, 3:18 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 2, 3:31 PM EDT | Severe Thunderstorm Warning | LWX | 44 min |
| Jun 10, 12:56 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 10, 2:02 PM EDT | Tornado Watch | SPC | 10 hr |
| Jun 10, 4:38 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 10, 5:22 PM EDT | Severe Thunderstorm Warning | LWX | 23 min |
| Jun 10, 5:42 PM EDT | Severe Thunderstorm Warning | LWX | 48 min |
| Jun 12, 1:50 PM EDT | Flash Flood Watch | LWX | 30 hr |
| Jun 13, 2:40 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 3:58 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 13, 5:27 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 6:53 AM EDT | Severe Thunderstorm Warning | LWX | 52 min |
| Jun 13, 7:26 AM EDT | Severe Thunderstorm Warning | LWX | 49 min |
| Jun 13, 7:52 AM EDT | Severe Thunderstorm Warning | LWX | 38 min |
| Jun 13, 8:10 AM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 13, 12:19 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 13, 2:20 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Jun 13, 2:56 PM EDT | Severe Thunderstorm Warning | LWX | 49 min |
| Jun 13, 3:16 PM EDT | Flash Flood Warning | LWX | 3 hr |
| Jun 18, 3:54 AM EDT | Flash Flood Watch | LWX | 13 hr |
| Jun 24, 1:48 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jun 24, 3:06 PM EDT | Severe Thunderstorm Warning | LWX | 39 min |
| Jun 24, 3:25 PM EDT | Severe Thunderstorm Warning | LWX | 50 min |
| Jun 25, 5:27 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Jun 25, 6:20 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 25, 8:57 PM EDT | Severe Thunderstorm Warning | LWX | 48 min |
| Jun 25, 9:37 PM EDT | Severe Thunderstorm Warning | LWX | 38 min |
| Jun 26, 1:19 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 27, 1:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 28, 1:02 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jun 28, 1:09 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 28, 3:30 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 28, 7:11 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Jun 30, 11:48 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 7, 12:48 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 7, 1:16 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 7, 3:19 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jul 7, 4:04 PM EDT | Severe Thunderstorm Warning | LWX | 41 min |
| Jul 7, 5:07 PM EDT | Severe Thunderstorm Warning | LWX | 38 min |
| Jul 12, 3:46 AM EDT | Flash Flood Watch | LWX | 14 hr |
| Jul 12, 9:17 AM EDT | River Flood Warning | LWX | 12 hr |
| Jul 17, 2:22 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jul 19, 6:09 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 19, 6:28 PM EDT | Severe Thunderstorm Warning | LWX | 62 min |
| Jul 20, 1:07 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 27, 5:25 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Aug 4, 3:33 AM EDT | Dense Fog Advisory | LWX | 4 hr |
| Aug 13, 1:36 AM EDT | Flash Flood Watch | LWX | 10 hr |
| Aug 20, 2:49 AM EDT | Dense Fog Advisory | LWX | 7 hr |
| Sep 12, 1:29 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Sep 12, 2:50 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Oct 7, 8:24 AM EDT | Severe Thunderstorm Warning | LWX | 51 min |
| Oct 7, 8:38 AM EDT | Tornado Warning | LWX | 37 min |
| Oct 20, 1:13 PM EDT | Frost Advisory | LWX | 19 hr |
| Oct 23, 1:28 PM EDT | Freeze Watch | LWX | 24 hr |
| Oct 24, 1:34 PM EDT | Freeze Warning | LWX | 19 hr |
| Oct 31, 12:53 PM EDT | Wind Advisory | LWX | 22 hr |
| Nov 1, 3:37 AM EDT | Mesoscale Discussion | SPC | 83 min |
| Nov 1, 4:17 AM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Nov 1, 6:16 AM EDT | Severe Thunderstorm Warning | LWX | 44 min |
| Nov 17, 11:08 PM EST | Mesoscale Discussion | SPC | 67 min |
| Nov 17, 11:31 PM EST | Severe Thunderstorm Watch | SPC | 2 hr |
| Nov 18, 12:16 AM EST | Severe Thunderstorm Warning | LWX | 59 min |
| Nov 23, 11:05 AM EST | Fire Weather Watch | LWX | 17 hr |
| Nov 24, 3:23 AM EST | Red Flag Warning | LWX | 15 hr |
| Nov 25, 9:58 AM EST | Winter Weather Advisory | LWX | 62 hr |
| Nov 27, 4:38 AM EST | Wind Advisory | LWX | 19 hr |
| Dec 6, 12:07 PM EST | Winter Storm Watch | LWX | 32 hr |
| Dec 7, 1:40 AM EST | Areal Flood Warning | LWX | 6 hr |
| Dec 7, 6:28 AM EST | River Flood Warning | LWX | 17 hr |
| Dec 7, 8:34 PM EST | Winter Storm Warning | LWX | 36 hr |
| Dec 8, 11:05 AM EST | Mesoscale Discussion | SPC | 3 hr |
| Dec 8, 2:30 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Dec 9, 10:09 AM EST | Winter Storm Watch | LWX | 4 hr |
| Dec 9, 2:29 PM EST | Winter Weather Advisory | LWX | 21 hr |
| Dec 9, 5:22 PM EST | Dense Fog Advisory | LWX | 10 hr |
| Dec 9, 8:54 PM EST | Winter Storm Warning | LWX | 15 hr |
| Dec 10, 4:37 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 13, 4:21 AM EST | Winter Storm Watch | LWX | 10 hr |
| Dec 13, 2:33 PM EST | Winter Weather Advisory | LWX | 34 hr |
| Dec 22, 3:37 AM EST | Severe Thunderstorm Watch | SPC | 5 hr |
| Dec 22, 6:14 AM EST | Mesoscale Discussion | SPC | 61 min |
| Dec 29, 9:36 PM EST | River Flood Warning | LWX | 11 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 archive20122014
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.