Alert archive / West Virginia / Berkeley County
Weather alerts in Berkeley County, West Virginia, 2015
122 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Berkeley County and its neighbors
Each county as a circle sized by its count in 2015. Tap one for its archive.
- Alerts
- 122
- Warnings
- 31
- Watches
- 21
- Advisories
- 42
- Busiest month
- June24 alerts
- Busiest day
- June 23, 20156 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Berkeley County, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 18 | 10 | 44% | 1 | 100% | 3 min |
| Flash flood warnings | 1 | 0 | 100% | 0 |
Each office's whole area, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Baltimore/Washington: tornado warnings | 17 | 2 | 88% | 4 | 50% | 5 min |
| NWS Baltimore/Washington: severe thunderstorm warnings | 235 | 153 | 35% | 526 | 75% | 16 min |
| NWS Baltimore/Washington: flash flood warnings | 89 | 47 | 47% | 138 | 74% | 64 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 2, 2:06 PM EST | Winter Weather Advisory | LWX | 25 hr |
| Jan 4, 12:26 PM EST | Wind Advisory | LWX | 21 hr |
| Jan 5, 1:59 PM EST | Winter Weather Advisory | LWX | 53 hr |
| Jan 6, 2:58 PM EST | Wind Chill Advisory | LWX | 50 hr |
| Jan 8, 8:18 AM EST | Wind Chill Advisory | LWX | 42 min |
| Jan 11, 3:03 PM EST | Freezing Rain Advisory | LWX | 22 hr |
| Jan 11, 8:50 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 20, 2:55 PM EST | Winter Weather Advisory | LWX | 26 hr |
| Jan 21, 6:32 PM EST | Winter Weather Advisory | LWX | 15 hr |
| Jan 21, 10:56 PM EST | Dense Fog Advisory | LWX | 12 hr |
| Jan 23, 4:19 AM EST | Winter Weather Advisory | LWX | 32 hr |
| Jan 23, 11:43 AM EST | Winter Storm Warning | LWX | 24 hr |
| Jan 24, 2:49 PM EST | Winter Storm Watch | LWX | 19 hr |
| Jan 25, 3:36 AM EST | Winter Storm Warning | LWX | 51 hr |
| Jan 25, 9:38 AM EST | Winter Weather Advisory | LWX | 47 hr |
| Jan 29, 3:56 AM EST | Winter Weather Advisory | LWX | 32 hr |
| Jan 29, 9:44 PM EST | Wind Advisory | LWX | 26 hr |
| Jan 31, 8:04 PM EST | Winter Weather Advisory | LWX | 47 hr |
| Feb 1, 10:39 PM EST | Wind Advisory | LWX | 23 hr |
| Feb 9, 8:47 AM EST | Winter Weather Advisory | LWX | 26 hr |
| Feb 12, 3:48 AM EST | Wind Chill Advisory | LWX | 32 hr |
| Feb 13, 3:25 AM EST | High Wind Watch | LWX | 24 hr |
| Feb 13, 3:48 AM EST | Wind Chill Watch | LWX | 24 hr |
| Feb 13, 2:56 PM EST | Winter Weather Advisory | LWX | 33 hr |
| Feb 14, 3:17 AM EST | High Wind Warning | LWX | 32 hr |
| Feb 14, 3:17 AM EST | Wind Advisory | LWX | 36 hr |
| Feb 14, 3:44 AM EST | Wind Chill Warning | LWX | 54 hr |
| Feb 15, 3:12 PM EST | Winter Storm Watch | LWX | 13 hr |
| Feb 15, 9:53 PM EST | Winter Storm Warning | LWX | 33 hr |
| Feb 16, 3:42 AM EST | Winter Weather Advisory | LWX | 25 hr |
| Feb 18, 4:13 AM EST | Wind Chill Advisory | LWX | 56 hr |
| Feb 19, 5:57 PM EST | Winter Storm Watch | LWX | 22 hr |
| Feb 20, 3:37 PM EST | Winter Storm Warning | LWX | 41 hr |
| Feb 28, 2:53 PM EST | Winter Weather Advisory | LWX | 38 hr |
| Mar 2, 3:37 PM EST | Winter Weather Advisory | LWX | 30 hr |
| Mar 3, 2:50 PM EST | Winter Storm Watch | LWX | 23 hr |
| Mar 4, 4:51 AM EST | Winter Storm Warning | LWX | 39 hr |
| Mar 5, 7:58 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Mar 5, 11:55 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Mar 5, 2:13 PM EST | Wind Chill Advisory | LWX | 18 hr |
| Mar 10, 5:23 PM EDT | Dense Fog Advisory | LWX | 13 hr |
| Mar 15, 8:22 AM EDT | Wind Advisory | LWX | 9 hr |
| Mar 19, 4:23 AM EDT | Winter Weather Advisory | LWX | 34 hr |
| Mar 19, 11:58 AM EDT | Winter Storm Warning | LWX | 26 hr |
| Mar 25, 3:03 AM EDT | Freezing Rain Advisory | LWX | 8 hr |
| Mar 31, 11:47 AM EDT | Wind Advisory | LWX | 10 hr |
| Apr 11, 1:54 PM EDT | Frost Advisory | LWX | 19 hr |
| Apr 20, 1:54 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 20, 3:08 PM EDT | Tornado Watch | SPC | 9 hr |
| Apr 20, 5:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Apr 20, 8:24 PM EDT | Severe Thunderstorm Warning | LWX | 36 min |
| Apr 22, 4:10 AM EDT | Wind Advisory | LWX | 15 hr |
| Apr 22, 12:19 PM EDT | Severe Thunderstorm Warning | LWX | 25 min |
| Apr 23, 4:05 AM EDT | Freeze Watch | LWX | 10 hr |
| Apr 23, 2:07 PM EDT | Freeze Warning | LWX | 17 hr |
| Apr 24, 3:23 AM EDT | Freeze Watch | LWX | 11 hr |
| Apr 24, 2:35 PM EDT | Freeze Warning | LWX | 18 hr |
| May 6, 2:45 PM EDT | Severe Thunderstorm Warning | LWX | 30 min |
| May 6, 3:21 PM EDT | Mesoscale Discussion | SPC | 114 min |
| May 6, 3:32 PM EDT | Severe Thunderstorm Warning | LWX | 28 min |
| May 6, 3:56 PM EDT | Severe Thunderstorm Warning | LWX | 23 min |
| May 16, 1:35 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 16, 4:08 PM EDT | Severe Thunderstorm Warning | LWX | 36 min |
| May 16, 4:09 PM EDT | Severe Thunderstorm Warning | LWX | 36 min |
| May 16, 4:14 PM EDT | Severe Thunderstorm Warning | LWX | 31 min |
| May 31, 12:51 PM EDT | Mesoscale Discussion | SPC | 114 min |
| May 31, 3:03 PM EDT | Severe Thunderstorm Warning | LWX | 27 min |
| May 31, 10:06 PM EDT | Severe Thunderstorm Warning | LWX | 24 min |
| Jun 6, 5:55 AM EDT | Dense Fog Advisory | LWX | 3 hr |
| Jun 8, 2:34 PM EDT | Tornado Watch | SPC | 5 hr |
| Jun 8, 3:46 PM EDT | Severe Thunderstorm Warning | LWX | 44 min |
| Jun 8, 4:18 PM EDT | Severe Thunderstorm Warning | LWX | 42 min |
| Jun 8, 4:46 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Jun 12, 2:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 14, 2:06 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jun 15, 2:02 AM EDT | Mesoscale Discussion | SPC | 118 min |
| Jun 16, 12:15 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 19, 3:11 PM EDT | Flash Flood Watch | LWX | 38 hr |
| Jun 20, 1:36 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Jun 20, 2:23 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 20, 5:57 PM EDT | Severe Thunderstorm Warning | LWX | 33 min |
| Jun 20, 6:24 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jun 23, 1:45 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 23, 4:09 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 23, 5:18 PM EDT | Severe Thunderstorm Warning | LWX | 27 min |
| Jun 23, 5:40 PM EDT | Severe Thunderstorm Warning | LWX | 10 min |
| Jun 23, 5:47 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 23, 7:41 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Jun 26, 4:20 AM EDT | Flash Flood Watch | LWX | 40 hr |
| Jun 30, 2:22 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 30, 3:48 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jun 30, 9:37 PM EDT | Severe Thunderstorm Warning | LWX | 38 min |
| Jun 30, 9:52 PM EDT | Flash Flood Warning | LWX | 4 hr |
| Jul 6, 1:01 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 9, 12:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 9, 1:27 PM EDT | Tornado Watch | SPC | 6 hr |
| Jul 9, 3:09 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 9, 4:55 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jul 14, 5:16 PM EDT | Severe Thunderstorm Warning | LWX | 29 min |
| Jul 14, 5:50 PM EDT | Severe Thunderstorm Warning | LWX | 25 min |
| Jul 14, 6:10 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 14, 6:44 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Aug 4, 3:29 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 20, 11:49 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 20, 3:45 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 2, 3:35 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Sep 29, 4:20 AM EDT | Flash Flood Watch | LWX | 23 hr |
| Oct 16, 3:57 AM EDT | Freeze Watch | LWX | 24 hr |
| Oct 17, 3:34 AM EDT | Freeze Watch | LWX | 31 hr |
| Oct 17, 3:34 AM EDT | Freeze Warning | LWX | 29 hr |
| Oct 18, 10:38 AM EDT | Freeze Warning | LWX | 22 hr |
| Nov 12, 8:34 AM EST | Wind Advisory | LWX | 43 hr |
| Dec 1, 10:47 PM EST | Dense Fog Advisory | LWX | 17 hr |
| Dec 6, 9:28 PM EST | Dense Fog Advisory | LWX | 6 hr |
| Dec 10, 3:16 AM EST | Dense Fog Advisory | LWX | 8 hr |
| Dec 17, 9:57 PM EST | Dense Fog Advisory | LWX | 5 hr |
| Dec 22, 10:15 PM EST | Dense Fog Advisory | LWX | 14 hr |
| Dec 25, 4:14 AM EST | Dense Fog Advisory | LWX | 9 hr |
| Dec 25, 1:19 PM EST | Flash Flood Watch | LWX | 6 hr |
| Dec 26, 12:17 AM EST | Dense Fog Advisory | LWX | 9 hr |
| Dec 30, 12:08 AM EST | Dense Fog Advisory | LWX | 11 hr |
| Dec 31, 1:18 AM EST | Dense Fog Advisory | LWX | 9 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 | 18 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 28 |
| Flooding | |
| Flash Flood Warning | 1 |
| Flash Flood Watch | 4 |
| Winter | |
| Winter Storm Warning | 6 |
| Winter Storm Watch | 4 |
| Freezing Rain Advisory | 2 |
| Winter Weather Advisory | 14 |
| Cold | |
| Freeze Warning | 4 |
| Wind Chill Warning | 1 |
| Freeze Watch | 4 |
| Wind Chill Watch | 1 |
| Frost Advisory | 1 |
| Wind Chill Advisory | 5 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Wind Advisory | 8 |
| Fog and smoke | |
| Dense Fog Advisory | 12 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20142016
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.