Alert archive / West Virginia / Grant County
Weather alerts in Grant County, West Virginia, 2017
84 weather alerts in 2017, 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 2017. Tap one for its archive.
- Alerts
- 84
- Warnings
- 12
- Watches
- 11
- Advisories
- 48
- Busiest month
- January14 alerts
- Busiest day
- March 1, 20174 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, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 4 | 3 | 25% | 5 | 0% | |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Baltimore/Washington: tornado warnings | 11 | 4 | 64% | 18 | 33% | 7 min |
| NWS Baltimore/Washington: severe thunderstorm warnings | 261 | 194 | 26% | 976 | 81% | 19 min |
| NWS Baltimore/Washington: flash flood warnings | 49 | 34 | 31% | 130 | 81% | 78 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 1, 9:22 PM EST | Freezing Rain Advisory | LWX | 6 hr |
| Jan 4, 8:13 PM EST | Winter Weather Advisory | LWX | 32 hr |
| Jan 6, 2:12 PM EST | Wind Chill Advisory | LWX | 61 hr |
| Jan 10, 1:32 PM EST | Freezing Rain Advisory | LWX | 14 hr |
| Jan 13, 3:32 AM EST | Winter Weather Advisory | LWX | 47 hr |
| Jan 13, 3:32 AM EST | Freezing Rain Advisory | LWX | 36 hr |
| Jan 21, 12:06 AM EST | Dense Fog Advisory | LWX | 13 hr |
| Jan 21, 8:42 PM EST | Dense Fog Advisory | LWX | 14 hr |
| Jan 23, 12:18 PM EST | Winter Weather Advisory | LWX | 17 hr |
| Jan 26, 3:35 AM EST | Wind Advisory | LWX | 15 hr |
| Jan 26, 10:48 AM EST | Winter Weather Advisory | LWX | 38 hr |
| Jan 29, 3:42 AM EST | Winter Weather Advisory | LWX | 33 hr |
| Jan 30, 12:17 PM EST | Winter Weather Advisory | LWX | 23 hr |
| Jan 31, 4:01 AM EST | Wind Advisory | LWX | 12 hr |
| Feb 1, 3:15 AM EST | Winter Weather Advisory | LWX | 15 hr |
| Feb 7, 8:19 PM EST | Winter Storm Watch | LWX | 14 hr |
| Feb 8, 10:17 AM EST | Winter Storm Warning | LWX | 25 hr |
| Feb 8, 10:17 AM EST | Winter Weather Advisory | LWX | 21 hr |
| Feb 9, 4:22 AM EST | Wind Chill Advisory | LWX | 28 hr |
| Feb 9, 10:53 AM EST | Winter Weather Advisory | LWX | 11 hr |
| Feb 10, 8:40 PM EST | Wind Advisory | LWX | 12 hr |
| Feb 11, 2:22 PM EST | High Wind Watch | LWX | 13 hr |
| Feb 12, 3:36 AM EST | High Wind Warning | LWX | 32 hr |
| Feb 12, 3:36 AM EST | Wind Advisory | LWX | 37 hr |
| Feb 12, 8:44 PM EST | Special Weather Statement | LWX | 2 hr |
| Feb 12, 9:00 PM EST | Severe Thunderstorm Warning | LWX | 45 min |
| Feb 15, 12:39 PM EST | Winter Weather Advisory | LWX | 21 hr |
| Mar 1, 9:44 AM EST | Mesoscale Discussion | SPC | 91 min |
| Mar 1, 10:38 AM EST | Severe Thunderstorm Watch | SPC | 4 hr |
| Mar 1, 11:56 AM EST | Severe Thunderstorm Warning | LWX | 49 min |
| Mar 1, 2:47 PM EST | Wind Advisory | LWX | 18 hr |
| Mar 8, 3:17 AM EST | Wind Advisory | LWX | 24 hr |
| Mar 9, 11:52 PM EST | Winter Weather Advisory | LWX | 12 hr |
| Mar 10, 12:56 PM EST | Wind Chill Advisory | LWX | 19 hr |
| Mar 11, 7:52 PM EST | Winter Storm Watch | LWX | 31 hr |
| Mar 12, 2:58 PM EDT | Winter Storm Warning | LWX | 47 hr |
| Mar 14, 3:22 AM EDT | Mesoscale Discussion | SPC | 5 hr |
| Mar 14, 2:05 PM EDT | Winter Weather Advisory | LWX | 24 hr |
| Mar 15, 3:52 AM EDT | Wind Advisory | LWX | 16 hr |
| Mar 15, 1:42 PM EDT | Wind Chill Advisory | LWX | 19 hr |
| Mar 17, 8:13 PM EDT | Winter Weather Advisory | LWX | 5 hr |
| Apr 6, 10:32 AM EDT | Winter Weather Advisory | LWX | 27 hr |
| Apr 6, 12:50 PM EDT | Wind Advisory | LWX | 30 hr |
| Apr 20, 2:40 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Apr 30, 3:25 PM EDT | Mesoscale Discussion | SPC | 95 min |
| May 1, 4:36 PM EDT | Mesoscale Discussion | SPC | 84 min |
| May 1, 5:54 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 2, 4:40 AM EDT | Wind Advisory | LWX | 13 hr |
| May 7, 4:03 AM EDT | Freeze Watch | LWX | 10 hr |
| May 7, 2:10 PM EDT | Freeze Warning | LWX | 18 hr |
| May 8, 12:41 PM EDT | Freeze Warning | LWX | 19 hr |
| May 28, 11:13 AM EDT | Flash Flood Watch | LWX | 8 hr |
| Jun 14, 2:20 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 23, 8:25 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Jul 6, 6:20 AM EDT | Flash Flood Watch | LWX | 20 hr |
| Jul 7, 3:35 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jul 7, 5:55 PM EDT | Severe Thunderstorm Warning | LWX | 27 min |
| Jul 14, 1:09 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 14, 1:40 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 14, 4:23 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Jul 24, 2:17 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jul 27, 1:47 PM EDT | Flash Flood Watch | LWX | 48 hr |
| Jul 29, 8:22 AM EDT | Areal Flood Warning | LWX | 8 hr |
| Aug 15, 10:31 PM EDT | Dense Fog Advisory | LWX | 11 hr |
| Aug 19, 8:16 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Sep 5, 2:43 PM EDT | Severe Thunderstorm Warning | LWX | 47 min |
| Oct 16, 3:53 AM EDT | Freeze Watch | LWX | 9 hr |
| Oct 16, 12:30 PM EDT | Freeze Warning | LWX | 20 hr |
| Oct 29, 3:44 AM EDT | Wind Advisory | LWX | 30 hr |
| Oct 29, 3:44 AM EDT | Winter Weather Advisory | LWX | 26 hr |
| Nov 16, 5:47 AM EST | Wind Advisory | LWX | 9 hr |
| Nov 18, 3:40 AM EST | Wind Advisory | LWX | 33 hr |
| Nov 18, 2:19 PM EST | Winter Weather Advisory | LWX | 32 hr |
| Dec 8, 5:50 AM EST | Winter Weather Advisory | LWX | 51 hr |
| Dec 11, 12:18 PM EST | Winter Weather Advisory | LWX | 33 hr |
| Dec 11, 1:19 PM EST | Wind Chill Advisory | LWX | 47 hr |
| Dec 13, 3:47 AM EST | Winter Weather Advisory | LWX | 27 hr |
| Dec 13, 11:50 PM EST | Wind Advisory | LWX | 12 hr |
| Dec 23, 1:52 PM EST | Winter Weather Advisory | LWX | 47 hr |
| Dec 24, 10:35 AM EST | Wind Advisory | LWX | 26 hr |
| Dec 27, 1:36 PM EST | Wind Chill Advisory | LWX | 18 hr |
| Dec 29, 6:25 PM EST | Winter Weather Advisory | LWX | 20 hr |
| Dec 30, 11:32 AM EST | Winter Storm Warning | LWX | 6 hr |
| Dec 30, 2:12 PM EST | Wind Chill Advisory | LWX | 69 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 | 4 |
| Severe Thunderstorm Watch | 3 |
| Mesoscale Discussion | 12 |
| Special Weather Statement | 1 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Watch | 3 |
| Winter | |
| Winter Storm Warning | 3 |
| Winter Storm Watch | 2 |
| Freezing Rain Advisory | 3 |
| Winter Weather Advisory | 21 |
| Cold | |
| Freeze Warning | 3 |
| Freeze Watch | 2 |
| Wind Chill Advisory | 7 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 1 |
| Wind Advisory | 14 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
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.