Alert archive / West Virginia / Grant County
Weather alerts in Grant County, West Virginia, 2018
149 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Grant County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 149
- Warnings
- 35
- Watches
- 32
- Advisories
- 59
- Busiest month
- May21 alerts
- Busiest day
- May 14, 20186 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Grant County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 11 | 5 | 55% | 2 | 50% | 13 min |
| Flash flood warnings | 3 | 1 | 67% | 1 | 0% |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Baltimore/Washington: tornado warnings | 19 | 1 | 95% | 4 | 25% | 1 min |
| NWS Baltimore/Washington: severe thunderstorm warnings | 312 | 208 | 33% | 690 | 70% | 20 min |
| NWS Baltimore/Washington: flash flood warnings | 87 | 38 | 56% | 129 | 89% | 103 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 3, 3:34 AM EST | Wind Chill Watch | LWX | 24 hr |
| Jan 3, 3:34 AM EST | Wind Chill Advisory | LWX | 38 hr |
| Jan 4, 3:36 AM EST | Wind Chill Watch | LWX | 24 hr |
| Jan 4, 3:36 AM EST | Wind Chill Warning | LWX | 56 hr |
| Jan 4, 3:36 AM EST | Wind Chill Advisory | LWX | 32 hr |
| Jan 5, 3:45 AM EST | Wind Chill Advisory | LWX | 54 hr |
| Jan 6, 3:55 AM EST | Wind Chill Advisory | LWX | 26 hr |
| Jan 7, 2:46 PM EST | Winter Weather Advisory | LWX | 33 hr |
| Jan 12, 12:26 PM EST | Winter Weather Advisory | LWX | 21 hr |
| Jan 13, 12:34 PM EST | Wind Chill Advisory | LWX | 21 hr |
| Jan 15, 1:47 PM EST | Winter Weather Advisory | LWX | 46 hr |
| Jan 17, 4:19 AM EST | Wind Chill Advisory | LWX | 29 hr |
| Jan 29, 3:47 AM EST | Winter Weather Advisory | LWX | 32 hr |
| Feb 1, 10:37 AM EST | Winter Weather Advisory | LWX | 17 hr |
| Feb 2, 2:32 PM EST | Wind Chill Advisory | LWX | 13 hr |
| Feb 3, 3:00 PM EST | Winter Weather Advisory | LWX | 28 hr |
| Feb 6, 4:02 AM EST | Winter Weather Advisory | LWX | 38 hr |
| Feb 7, 5:28 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 16, 9:12 PM EST | Winter Storm Watch | LWX | 6 hr |
| Feb 16, 9:12 PM EST | Winter Weather Advisory | LWX | 31 hr |
| Feb 17, 2:43 AM EST | Winter Storm Warning | LWX | 25 hr |
| Feb 22, 2:37 PM EST | Winter Weather Advisory | LWX | 13 hr |
| Feb 22, 9:12 PM EST | Dense Fog Advisory | LWX | 10 hr |
| Feb 28, 2:52 PM EST | High Wind Watch | LWX | 21 hr |
| Mar 1, 4:06 AM EST | High Wind Warning | LWX | 45 hr |
| Mar 1, 5:15 AM EST | Winter Weather Advisory | LWX | 29 hr |
| Mar 1, 10:37 PM EST | Special Weather Statement | LWX | 7 hr |
| Mar 2, 7:57 PM EST | Wind Advisory | LWX | 10 hr |
| Mar 5, 2:04 PM EST | Winter Weather Advisory | LWX | 34 hr |
| Mar 6, 2:52 PM EST | Winter Weather Advisory | LWX | 25 hr |
| Mar 8, 3:27 AM EST | Winter Weather Advisory | LWX | 31 hr |
| Mar 11, 2:37 PM EDT | Winter Weather Advisory | LWX | 23 hr |
| Mar 13, 2:45 AM EDT | Winter Weather Advisory | LWX | 35 hr |
| Mar 16, 1:27 PM EDT | Winter Weather Advisory | LWX | 23 hr |
| Mar 19, 12:06 PM EDT | Winter Storm Watch | LWX | 25 hr |
| Mar 19, 3:42 PM EDT | Winter Storm Warning | LWX | 52 hr |
| Mar 19, 3:42 PM EDT | Winter Weather Advisory | LWX | 28 hr |
| Mar 20, 9:55 PM EDT | Mesoscale Discussion | SPC | 6 hr |
| Mar 27, 4:07 AM EDT | Winter Weather Advisory | LWX | 13 hr |
| Mar 29, 4:23 AM EDT | Dense Fog Advisory | LWX | 6 hr |
| Mar 31, 2:21 PM EDT | Winter Storm Watch | LWX | 23 hr |
| Apr 1, 4:01 AM EDT | Winter Weather Advisory | LWX | 27 hr |
| Apr 1, 1:44 PM EDT | Winter Storm Warning | LWX | 17 hr |
| Apr 3, 5:33 PM EDT | Wind Advisory | LWX | 25 hr |
| Apr 3, 6:38 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 11, 1:34 PM EDT | Fire Weather Watch | LWX | 14 hr |
| Apr 12, 3:42 AM EDT | Red Flag Warning | LWX | 16 hr |
| Apr 15, 2:42 PM EDT | Flash Flood Watch | LWX | 13 hr |
| Apr 16, 4:13 AM EDT | Flash Flood Warning | LWX | 85 min |
| Apr 16, 5:37 AM EDT | Areal Flood Warning | LWX | 13 hr |
| Apr 18, 2:22 PM EDT | Wind Advisory | LWX | 27 hr |
| Apr 29, 3:18 PM EDT | Fire Weather Watch | LWX | 12 hr |
| Apr 30, 3:32 AM EDT | Red Flag Warning | LWX | 16 hr |
| May 7, 2:34 AM EDT | Dense Fog Advisory | LWX | 6 hr |
| May 12, 1:51 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 12, 2:47 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 12, 5:05 PM EDT | Mesoscale Discussion | SPC | 115 min |
| May 13, 1:56 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 13, 4:28 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 13, 7:00 PM EDT | Mesoscale Discussion | SPC | 60 min |
| May 14, 5:32 AM EDT | Dense Fog Advisory | LWX | 4 hr |
| May 14, 11:56 AM EDT | Mesoscale Discussion | SPC | 64 min |
| May 14, 12:29 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| May 14, 3:26 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 14, 4:12 PM EDT | Severe Thunderstorm Warning | LWX | 48 min |
| May 14, 4:39 PM EDT | Severe Thunderstorm Warning | LWX | 51 min |
| May 15, 4:33 AM EDT | Flash Flood Watch | LWX | 20 hr |
| May 15, 9:17 PM EDT | Severe Thunderstorm Warning | LWX | 30 min |
| May 16, 1:40 PM EDT | Flood Watch | LWX | 3 days |
| May 21, 6:07 PM EDT | Areal Flood Warning | LWX | 5 hr |
| May 21, 8:16 PM EDT | Areal Flood Warning | LWX | 3 hr |
| May 27, 5:57 PM EDT | Flash Flood Warning | LWX | 4 hr |
| May 30, 4:24 AM EDT | Flash Flood Watch | LWX | 25 hr |
| May 31, 4:06 AM EDT | Flash Flood Watch | LWX | 17 hr |
| Jun 2, 3:13 AM EDT | Flash Flood Watch | LWX | 25 hr |
| Jun 2, 9:57 AM EDT | Areal Flood Warning | LWX | 18 hr |
| Jun 2, 12:37 PM EDT | Flash Flood Warning | LWX | 3 hr |
| Jun 2, 5:44 PM EDT | River Flood Warning | LWX | 10 hr |
| Jun 3, 2:08 PM EDT | Areal Flood Warning | LWX | 4 hr |
| Jun 19, 12:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 20, 3:23 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 22, 11:27 PM EDT | Areal Flood Warning | LWX | 4 hr |
| Jun 30, 2:14 PM EDT | Heat Advisory | LWX | 27 hr |
| Jul 1, 2:10 PM EDT | Heat Advisory | LWX | 30 hr |
| Jul 2, 12:57 PM EDT | Severe Thunderstorm Warning | LWX | 17 min |
| Jul 2, 1:03 PM EDT | Mesoscale Discussion | SPC | 72 min |
| Jul 2, 1:40 PM EDT | Heat Advisory | LWX | 30 hr |
| Jul 2, 2:00 PM EDT | Severe Thunderstorm Warning | LWX | 30 min |
| Jul 2, 3:19 PM EDT | Severe Thunderstorm Warning | LWX | 41 min |
| Jul 5, 9:56 AM EDT | Flash Flood Watch | LWX | 17 hr |
| Jul 5, 1:37 PM EDT | Areal Flood Warning | LWX | 3 hr |
| Jul 15, 3:12 PM EDT | Severe Thunderstorm Warning | LWX | 32 min |
| Jul 26, 1:47 AM EDT | Dense Fog Advisory | LWX | 7 hr |
| Jul 27, 1:28 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Jul 27, 1:52 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 27, 2:49 PM EDT | Severe Thunderstorm Warning | LWX | 19 min |
| Aug 1, 4:10 AM EDT | Flash Flood Watch | LWX | 3 days |
| Aug 1, 3:15 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 4, 2:23 AM EDT | Dense Fog Advisory | LWX | 5 hr |
| Aug 12, 10:28 AM EDT | Severe Thunderstorm Warning | LWX | 47 min |
| Aug 12, 11:31 AM EDT | Areal Flood Warning | LWX | 82 min |
| Aug 12, 11:43 AM EDT | Areal Flood Warning | LWX | 3 hr |
| Aug 12, 12:23 PM EDT | Flash Flood Watch | LWX | 9 hr |
| Aug 13, 3:20 AM EDT | Dense Fog Advisory | LWX | 4 hr |
| Aug 13, 4:21 AM EDT | Flash Flood Watch | LWX | 18 hr |
| Aug 13, 1:57 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 21, 2:16 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Aug 21, 2:34 PM EDT | Severe Thunderstorm Warning | LWX | 41 min |
| Aug 21, 2:41 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 21, 4:56 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 21, 7:06 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Aug 30, 1:34 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Aug 30, 6:10 PM EDT | Severe Thunderstorm Warning | LWX | 42 min |
| Sep 1, 12:11 PM EDT | Flash Flood Watch | LWX | 8 hr |
| Sep 2, 7:23 AM EDT | Dense Fog Advisory | LWX | 2 hr |
| Sep 7, 3:29 AM EDT | Flash Flood Watch | LWX | 19 hr |
| Sep 8, 2:46 PM EDT | Flood Watch | LWX | 39 hr |
| Sep 16, 3:11 PM EDT | Flash Flood Watch | LWX | 52 hr |
| Sep 26, 3:40 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 27, 2:39 AM EDT | Flood Watch | LWX | 27 hr |
| Sep 27, 8:36 PM EDT | Areal Flood Warning | LWX | 9 hr |
| Sep 29, 4:24 AM EDT | Dense Fog Advisory | LWX | 6 hr |
| Oct 7, 6:14 AM EDT | Dense Fog Advisory | LWX | 4 hr |
| Oct 8, 2:58 AM EDT | Dense Fog Advisory | LWX | 7 hr |
| Oct 10, 5:30 AM EDT | Dense Fog Advisory | LWX | 4 hr |
| Oct 11, 3:12 AM EDT | Wind Advisory | LWX | 29 hr |
| Oct 13, 2:15 PM EDT | Frost Advisory | LWX | 13 hr |
| Oct 17, 3:26 AM EDT | Freeze Warning | LWX | 30 hr |
| Oct 17, 2:46 PM EDT | Freeze Watch | LWX | 24 hr |
| Oct 18, 2:57 PM EDT | Freeze Warning | LWX | 18 hr |
| Oct 20, 1:10 PM EDT | Wind Advisory | LWX | 18 hr |
| Oct 28, 12:05 PM EDT | Wind Advisory | LWX | 19 hr |
| Nov 6, 10:03 AM EST | Wind Advisory | LWX | 7 hr |
| Nov 10, 3:07 AM EST | Wind Advisory | LWX | 11 hr |
| Nov 13, 3:46 PM EST | Winter Storm Watch | LWX | 24 hr |
| Nov 14, 3:54 PM EST | Winter Storm Warning | LWX | 36 hr |
| Nov 15, 3:18 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Nov 15, 9:56 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Nov 23, 3:32 AM EST | Winter Weather Advisory | LWX | 36 hr |
| Nov 26, 2:14 PM EST | Wind Advisory | LWX | 13 hr |
| Nov 26, 7:39 PM EST | Winter Weather Advisory | LWX | 11 hr |
| Nov 27, 1:47 PM EST | Winter Weather Advisory | LWX | 20 hr |
| Nov 27, 2:03 PM EST | Wind Advisory | LWX | 24 hr |
| Dec 2, 6:32 PM EST | Dense Fog Advisory | LWX | 11 hr |
| Dec 13, 2:04 PM EST | Flood Watch | LWX | 63 hr |
| Dec 15, 1:31 PM EST | Winter Weather Advisory | LWX | 27 hr |
| Dec 19, 3:48 AM EST | Flood Watch | LWX | 59 hr |
| Dec 21, 4:09 AM EST | Winter Weather Advisory | LWX | 29 hr |
| Dec 23, 8:28 PM EST | Winter Weather Advisory | LWX | 10 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 archive20172019
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.