Alert archive / West Virginia / Lewis County
Weather alerts in Lewis County, West Virginia, 2020
99 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Lewis County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 99
- Warnings
- 24
- Watches
- 18
- Advisories
- 20
- Busiest month
- April24 alerts
- Busiest day
- April 9, 20205 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Lewis County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 9 | 6 | 33% | 6 | 83% | 36 min |
| Flash flood warnings | 3 | 2 | 33% | 1 | 100% | 30 min |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Charleston, WV: tornado warnings | 8 | 0 | 100% | 1 | 0% | |
| NWS Charleston, WV: severe thunderstorm warnings | 143 | 95 | 34% | 361 | 75% | 23 min |
| NWS Charleston, WV: flash flood warnings | 72 | 37 | 49% | 114 | 71% | 67 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, 5:02 AM EST | Winter Weather Advisory | RLX | 35 hr |
| Jan 7, 8:49 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 11, 3:53 AM EST | Wind Advisory | RLX | 30 hr |
| Jan 11, 5:00 PM EST | Severe Thunderstorm Warning | RLX | 45 min |
| Jan 17, 3:11 AM EST | Winter Weather Advisory | RLX | 40 hr |
| Feb 6, 2:40 PM EST | Winter Weather Advisory | RLX | 28 hr |
| Feb 11, 11:55 AM EST | Flood Watch | RLX | 19 min |
| Feb 11, 12:14 PM EST | Flash Flood Watch | RLX | 48 hr |
| Feb 13, 8:27 AM EST | Areal Flood Warning | RLX | 17 hr |
| Feb 28, 5:18 AM EST | Special Weather Statement | RLX | 3 hr |
| Mar 3, 1:22 PM EST | Mesoscale Discussion | SPC | 113 min |
| Apr 1, 7:55 PM EDT | Frost Advisory | RLX | 13 hr |
| Apr 2, 2:39 PM EDT | Frost Advisory | RLX | 18 hr |
| Apr 3, 2:10 PM EDT | Frost Advisory | RLX | 19 hr |
| Apr 7, 4:57 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Apr 7, 6:53 PM EDT | Severe Thunderstorm Warning | RLX | 52 min |
| Apr 7, 7:06 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Apr 7, 7:44 PM EDT | Severe Thunderstorm Warning | RLX | 31 min |
| Apr 7, 11:40 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 8, 1:52 AM EDT | Mesoscale Discussion | SPC | 83 min |
| Apr 8, 3:16 AM EDT | Mesoscale Discussion | SPC | 89 min |
| Apr 8, 4:33 AM EDT | Severe Thunderstorm Warning | RLX | 27 min |
| Apr 9, 12:50 AM EDT | Mesoscale Discussion | SPC | 115 min |
| Apr 9, 1:36 AM EDT | Severe Thunderstorm Warning | RLX | 39 min |
| Apr 9, 2:03 AM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Apr 9, 2:04 AM EDT | Severe Thunderstorm Warning | RLX | 56 min |
| Apr 9, 2:25 PM EDT | Freeze Watch | RLX | 12 hr |
| Apr 10, 2:41 AM EDT | Freeze Warning | RLX | 31 hr |
| Apr 11, 2:36 PM EDT | High Wind Watch | RLX | 22 hr |
| Apr 12, 12:44 PM EDT | Wind Advisory | RLX | 30 hr |
| Apr 13, 2:48 PM EDT | Frost Advisory | RLX | 12 hr |
| Apr 14, 3:09 AM EDT | Freeze Warning | RLX | 30 hr |
| Apr 15, 2:10 PM EDT | Freeze Warning | RLX | 20 hr |
| Apr 18, 1:53 PM EDT | Frost Advisory | RLX | 19 hr |
| Apr 21, 3:32 AM EDT | Freeze Warning | RLX | 30 hr |
| May 3, 2:19 AM EDT | Flash Flood Watch | RLX | 20 hr |
| May 3, 6:35 PM EDT | Mesoscale Discussion | SPC | 55 min |
| May 6, 3:27 AM EDT | Frost Advisory | RLX | 30 hr |
| May 6, 3:27 AM EDT | Freeze Warning | RLX | 30 hr |
| May 7, 4:09 AM EDT | Freeze Warning | RLX | 53 hr |
| May 9, 3:13 AM EDT | Freeze Warning | RLX | 30 hr |
| May 10, 3:12 AM EDT | Freeze Warning | RLX | 56 hr |
| May 10, 7:57 PM EDT | Special Weather Statement | RLX | 33 min |
| May 10, 8:24 PM EDT | Special Weather Statement | RLX | 36 min |
| May 10, 8:25 PM EDT | Special Weather Statement | RLX | 35 min |
| May 10, 10:38 PM EDT | Special Weather Statement | RLX | 22 min |
| May 12, 2:03 AM EDT | Frost Advisory | RLX | 31 hr |
| May 27, 7:15 PM EDT | Flash Flood Watch | RLX | 3 min |
| May 27, 7:18 PM EDT | Flash Flood Watch | RLX | 11 hr |
| Jun 3, 6:24 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 6, 6:07 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jun 10, 4:04 PM EDT | Special Weather Statement | RLX | 116 min |
| Jun 10, 6:51 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 15, 3:51 AM EDT | Areal Flood Warning | RLX | 6 hr |
| Jun 27, 9:36 PM EDT | Flash Flood Warning | RLX | 3 hr |
| Jul 8, 3:14 PM EDT | Heat Advisory | RLX | 29 hr |
| Jul 9, 9:08 PM EDT | Special Weather Statement | RLX | 37 min |
| Jul 10, 4:11 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Jul 17, 3:34 AM EDT | Special Weather Statement | RLX | 26 min |
| Jul 18, 2:11 PM EDT | Heat Advisory | RLX | 30 hr |
| Jul 20, 6:24 PM EDT | Severe Thunderstorm Warning | RLX | 53 min |
| Jul 21, 3:05 PM EDT | Special Weather Statement | RLX | 25 min |
| Jul 21, 4:33 PM EDT | Special Weather Statement | RLX | 57 min |
| Jul 22, 5:46 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Jul 22, 7:47 PM EDT | Severe Thunderstorm Warning | RLX | 43 min |
| Jul 23, 3:45 AM EDT | Special Weather Statement | RLX | 30 min |
| Jul 30, 12:22 PM EDT | Flash Flood Watch | RLX | 20 hr |
| Jul 30, 4:52 PM EDT | Special Weather Statement | RLX | 53 min |
| Aug 1, 2:19 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Aug 1, 3:57 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 1, 7:55 PM EDT | Severe Thunderstorm Warning | RLX | 50 min |
| Aug 6, 10:15 AM EDT | Special Weather Statement | RLX | 30 min |
| Aug 7, 4:20 AM EDT | Special Weather Statement | RLX | 25 min |
| Aug 14, 1:01 PM EDT | Flash Flood Watch | RLX | 25 hr |
| Aug 22, 6:28 PM EDT | Flash Flood Warning | RLX | 2 hr |
| Aug 22, 7:20 PM EDT | Flash Flood Warning | RLX | 101 min |
| Aug 25, 3:10 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Aug 25, 3:34 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 25, 4:35 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Aug 25, 7:07 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Aug 26, 2:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Aug 27, 2:14 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 3, 2:34 AM EDT | Flash Flood Watch | RLX | 15 hr |
| Sep 21, 1:43 PM EDT | Frost Advisory | RLX | 19 hr |
| Oct 2, 3:13 AM EDT | Frost Advisory | RLX | 30 hr |
| Oct 4, 8:10 PM EDT | Special Weather Statement | RLX | 35 min |
| Oct 15, 2:58 PM EDT | Freeze Watch | RLX | 23 hr |
| Oct 16, 1:52 PM EDT | Freeze Warning | RLX | 20 hr |
| Nov 1, 12:51 PM EST | Special Weather Statement | RLX | 24 min |
| Nov 14, 1:46 PM EST | Wind Advisory | RLX | 41 hr |
| Nov 15, 3:10 PM EST | Special Weather Statement | RLX | 50 min |
| Nov 15, 3:44 PM EST | Special Weather Statement | RLX | 46 min |
| Nov 30, 3:19 AM EST | Winter Weather Advisory | RLX | 49 hr |
| Dec 14, 4:01 AM EST | Winter Storm Watch | RLX | 34 hr |
| Dec 15, 2:07 PM EST | Winter Weather Advisory | RLX | 37 hr |
| Dec 23, 4:41 AM EST | Winter Storm Watch | RLX | 9 hr |
| Dec 23, 1:32 PM EST | Winter Storm Warning | RLX | 41 hr |
| Dec 24, 4:59 AM EST | Winter Weather Advisory | RLX | 35 hr |
| Dec 24, 2:28 PM EST | Mesoscale Discussion | SPC | 5 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 | 9 |
| Severe Thunderstorm Watch | 5 |
| Mesoscale Discussion | 19 |
| Special Weather Statement | 18 |
| Flooding | |
| Areal Flood Warning | 2 |
| Flash Flood Warning | 3 |
| Flash Flood Watch | 7 |
| Flood Watch | 1 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 6 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 9 |
| Freeze Watch | 2 |
| Frost Advisory | 9 |
| Wind and dust | |
| High Wind Watch | 1 |
| Wind Advisory | 3 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20192021
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.