Alert archive / West Virginia / Roane County
Weather alerts in Roane County, West Virginia, 2017
81 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Roane County and its neighbors
Each county as a circle sized by its count in 2017. Tap one for its archive.
- Alerts
- 81
- Warnings
- 14
- Watches
- 15
- Advisories
- 11
- Busiest month
- March18 alerts
- Busiest day
- March 1, 201713 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 2 tornado warnings covering Roane County in 2017 had a tornado report inside them.
Roane County, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 6 | 4 | 33% | 1 | 100% | 22 min |
| Flash flood warnings | 2 | 1 | 50% | 0 |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Charleston, WV: tornado warnings | 19 | 3 | 84% | 8 | 50% | 6 min |
| NWS Charleston, WV: severe thunderstorm warnings | 112 | 81 | 28% | 264 | 67% | 18 min |
| NWS Charleston, WV: flash flood warnings | 56 | 37 | 34% | 113 | 88% | 108 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, 3:10 PM EST | Winter Weather Advisory | RLX | 37 hr |
| Jan 10, 9:45 PM EST | Wind Advisory | RLX | 3 hr |
| Jan 23, 2:30 PM EST | Special Weather Statement | RLX | 60 min |
| Jan 28, 3:05 PM EST | Winter Weather Advisory | RLX | 45 hr |
| Feb 20, 1:14 AM EST | Dense Fog Advisory | RLX | 10 hr |
| Feb 28, 11:28 AM EST | Flash Flood Watch | RLX | 28 hr |
| Mar 1, 2:32 AM EST | Mesoscale Discussion | SPC | 88 min |
| Mar 1, 6:15 AM EST | Severe Thunderstorm Warning | RLX | 30 min |
| Mar 1, 6:28 AM EST | Mesoscale Discussion | SPC | 2 hr |
| Mar 1, 6:48 AM EST | Severe Thunderstorm Watch | SPC | 5 hr |
| Mar 1, 7:15 AM EST | Special Weather Statement | RLX | 30 min |
| Mar 1, 7:36 AM EST | Flash Flood Warning | RLX | 5 hr |
| Mar 1, 8:28 AM EST | Mesoscale Discussion | SPC | 92 min |
| Mar 1, 9:33 AM EST | Tornado Warning | RLX | 27 min |
| Mar 1, 9:41 AM EST | Severe Thunderstorm Warning | RLX | 34 min |
| Mar 1, 9:55 AM EST | Tornado Warning | RLX | 35 min |
| Mar 1, 10:16 AM EST | Severe Thunderstorm Warning | RLX | 29 min |
| Mar 1, 12:27 PM EST | Areal Flood Warning | RLX | 2 hr |
| Mar 1, 3:56 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Mar 1, 11:34 PM EST | Special Weather Statement | RLX | 3 hr |
| Mar 17, 9:03 AM EDT | Freezing Rain Advisory | RLX | 3 hr |
| Mar 18, 12:41 PM EDT | Special Weather Statement | RLX | 34 min |
| Mar 22, 10:08 AM EDT | Special Weather Statement | RLX | 7 min |
| Mar 26, 3:00 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 5, 7:19 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 5, 10:35 PM EDT | Special Weather Statement | RLX | 55 min |
| Apr 7, 3:42 AM EDT | Freeze Warning | RLX | 29 hr |
| Apr 15, 5:10 PM EDT | Special Weather Statement | RLX | 35 min |
| Apr 27, 3:28 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 28, 11:19 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Apr 29, 12:28 AM EDT | Severe Thunderstorm Warning | RLX | 32 min |
| Apr 29, 4:46 AM EDT | Special Weather Statement | RLX | 29 min |
| Apr 30, 2:58 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 1, 11:59 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 1, 1:39 PM EDT | Special Weather Statement | RLX | 36 min |
| May 2, 4:40 AM EDT | Wind Advisory | RLX | 13 hr |
| May 7, 2:44 AM EDT | Frost Advisory | RLX | 30 hr |
| May 19, 3:13 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 19, 5:50 PM EDT | Mesoscale Discussion | SPC | 55 min |
| May 19, 8:22 PM EDT | Special Weather Statement | RLX | 53 min |
| May 27, 4:14 AM EDT | Flash Flood Watch | RLX | 39 hr |
| May 27, 1:50 PM EDT | Mesoscale Discussion | SPC | 85 min |
| May 27, 4:11 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 27, 6:13 PM EDT | Special Weather Statement | RLX | 32 min |
| May 27, 7:02 PM EDT | Severe Thunderstorm Warning | RLX | 28 min |
| May 27, 8:07 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jun 13, 10:09 AM EDT | Flash Flood Watch | RLX | 8 hr |
| Jun 13, 12:18 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 14, 2:20 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 22, 12:17 PM EDT | Flash Flood Watch | RLX | 40 hr |
| Jun 23, 2:20 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 23, 8:26 PM EDT | Flash Flood Warning | RLX | 4 hr |
| Jul 6, 10:03 AM EDT | Flash Flood Watch | RLX | 12 hr |
| Jul 7, 1:07 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Jul 7, 1:27 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 7, 3:35 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jul 7, 6:34 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Jul 7, 10:01 PM EDT | Special Weather Statement | RLX | 59 min |
| Jul 10, 7:40 PM EDT | Severe Thunderstorm Warning | RLX | 35 min |
| Jul 10, 9:10 PM EDT | Special Weather Statement | RLX | 35 min |
| Jul 11, 10:26 PM EDT | Special Weather Statement | RLX | 64 min |
| Jul 13, 9:22 AM EDT | Flash Flood Watch | RLX | 33 hr |
| Jul 21, 11:03 AM EDT | Mesoscale Discussion | SPC | 57 min |
| Jul 21, 11:29 AM EDT | Special Weather Statement | RLX | 31 min |
| Jul 21, 11:56 AM EDT | Special Weather Statement | RLX | 34 min |
| Jul 22, 11:59 AM EDT | Flash Flood Watch | RLX | 28 hr |
| Jul 22, 3:18 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 22, 3:54 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 22, 7:37 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jul 27, 1:37 PM EDT | Flash Flood Watch | RLX | 30 hr |
| Aug 4, 11:38 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 22, 12:39 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 22, 2:44 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Aug 22, 4:39 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Sep 5, 5:50 AM EDT | Special Weather Statement | RLX | 55 min |
| Oct 16, 11:10 AM EDT | Frost Advisory | RLX | 23 hr |
| Oct 17, 2:34 PM EDT | Frost Advisory | RLX | 18 hr |
| Oct 25, 3:26 AM EDT | Freeze Warning | RLX | 31 hr |
| Oct 26, 2:43 PM EDT | Frost Advisory | RLX | 18 hr |
| Oct 29, 2:44 PM EDT | Freeze Warning | RLX | 19 hr |
| Dec 29, 1:50 PM EST | Winter Weather Advisory | RLX | 27 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 | 6 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 7 |
| Mesoscale Discussion | 24 |
| Special Weather Statement | 17 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Warning | 2 |
| Flash Flood Watch | 8 |
| Winter | |
| Freezing Rain Advisory | 1 |
| Winter Weather Advisory | 3 |
| Cold | |
| Freeze Warning | 3 |
| Frost Advisory | 4 |
| Wind and dust | |
| Wind Advisory | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20162018
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.