Alert archive / West Virginia / Grant County
Weather alerts in Grant County, West Virginia, 2010
178 weather alerts in 2010, 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 2010. Tap one for its archive.
- Alerts
- 178
- Warnings
- 47
- Watches
- 34
- Advisories
- 50
- Busiest month
- May36 alerts
- Busiest day
- May 28, 20109 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, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 11 | 8 | 27% | 1 | 0% | |
| Flash flood warnings | 7 | 2 | 71% | 1 | 0% |
Each office's whole area, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Baltimore/Washington: tornado warnings | 31 | 2 | 94% | 4 | 50% | 17 min |
| NWS Baltimore/Washington: severe thunderstorm warnings | 257 | 198 | 23% | 762 | 86% | 21 min |
| NWS Baltimore/Washington: flash flood warnings | 64 | 35 | 45% | 139 | 92% | 166 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, 11:48 AM EST | Winter Storm Warning | LWX | 34 hr |
| Jan 2, 4:15 AM EST | Wind Chill Advisory | LWX | 53 hr |
| Jan 2, 4:21 AM EST | Wind Advisory | LWX | 38 hr |
| Jan 2, 9:41 PM EST | Winter Weather Advisory | LWX | 4 days |
| Jan 7, 3:48 AM EST | Winter Storm Watch | LWX | 23 hr |
| Jan 7, 3:48 AM EST | Winter Weather Advisory | LWX | 57 hr |
| Jan 8, 2:31 AM EST | Winter Storm Warning | LWX | 34 hr |
| Jan 8, 9:35 AM EST | Wind Chill Advisory | LWX | 48 hr |
| Jan 10, 2:38 PM EST | Wind Chill Advisory | LWX | 6 hr |
| Jan 11, 2:26 PM EST | Winter Weather Advisory | LWX | 24 hr |
| Jan 17, 3:25 PM EST | Winter Weather Advisory | LWX | 13 hr |
| Jan 19, 9:04 PM EST | Winter Weather Advisory | LWX | 6 hr |
| Jan 20, 2:50 PM EST | Winter Storm Watch | LWX | 22 hr |
| Jan 21, 4:09 AM EST | Winter Storm Warning | LWX | 29 hr |
| Jan 21, 12:55 PM EST | Winter Weather Advisory | LWX | 24 hr |
| Jan 23, 1:08 PM EST | Flash Flood Watch | LWX | 48 hr |
| Jan 24, 4:32 AM EST | Wind Advisory | LWX | 19 hr |
| Jan 25, 2:11 AM EST | Flash Flood Warning | LWX | 6 hr |
| Jan 25, 7:57 AM EST | Areal Flood Warning | LWX | 6 hr |
| Jan 25, 10:34 AM EST | River Flood Warning | LWX | 18 hr |
| Jan 26, 4:09 AM EST | Winter Weather Advisory | LWX | 23 hr |
| Jan 28, 8:56 AM EST | Winter Weather Advisory | LWX | 6 hr |
| Jan 28, 11:53 PM EST | Wind Chill Advisory | LWX | 8 hr |
| Jan 29, 11:00 AM EST | Winter Weather Advisory | LWX | 38 hr |
| Jan 30, 2:15 PM EST | Wind Chill Advisory | LWX | 19 hr |
| Jan 31, 2:54 PM EST | Wind Chill Advisory | LWX | 17 hr |
| Feb 2, 3:07 AM EST | Winter Weather Advisory | LWX | 26 hr |
| Feb 2, 12:03 PM EST | Winter Storm Warning | LWX | 17 hr |
| Feb 3, 2:45 PM EST | Winter Storm Watch | LWX | 19 hr |
| Feb 4, 9:59 AM EST | Winter Storm Warning | LWX | 55 hr |
| Feb 5, 11:45 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 5, 6:58 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 7, 3:15 PM EST | Winter Storm Watch | LWX | 35 hr |
| Feb 8, 3:04 PM EST | Winter Storm Warning | LWX | 46 hr |
| Feb 10, 3:45 AM EST | Blizzard Warning | LWX | 23 hr |
| Feb 10, 11:04 AM EST | Wind Advisory | LWX | 8 hr |
| Feb 11, 2:48 AM EST | Winter Weather Advisory | LWX | 27 hr |
| Feb 13, 10:03 AM EST | Winter Weather Advisory | LWX | 20 hr |
| Feb 13, 9:38 PM EST | Winter Storm Watch | LWX | 30 hr |
| Feb 15, 3:49 AM EST | Winter Weather Advisory | LWX | 17 hr |
| Feb 15, 4:39 PM EST | Winter Storm Warning | LWX | 65 hr |
| Feb 18, 9:57 AM EST | Winter Weather Advisory | LWX | 5 hr |
| Feb 22, 8:36 PM EST | Winter Weather Advisory | LWX | 12 hr |
| Feb 23, 5:31 AM EST | Winter Storm Watch | LWX | 55 hr |
| Feb 24, 9:03 AM EST | Winter Storm Warning | LWX | 33 hr |
| Feb 25, 9:35 AM EST | High Wind Watch | LWX | 6 hr |
| Feb 25, 12:14 PM EST | Blizzard Warning | LWX | 33 hr |
| Feb 25, 12:14 PM EST | Winter Weather Advisory | LWX | 30 hr |
| Feb 25, 3:41 PM EST | High Wind Warning | LWX | 26 hr |
| Feb 26, 9:31 PM EST | Winter Storm Warning | LWX | 41 hr |
| Mar 10, 5:46 AM EST | Flood Watch | LWX | 3 days |
| Mar 13, 6:21 AM EST | Areal Flood Warning | LWX | 6 hr |
| Mar 13, 11:42 AM EST | River Flood Warning | LWX | 5 hr |
| Mar 22, 12:44 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 28, 1:49 PM EDT | Flood Watch | LWX | 14 hr |
| Apr 2, 1:03 PM EDT | Fire Weather Watch | LWX | 20 hr |
| Apr 3, 9:24 AM EDT | Red Flag Warning | LWX | 8 hr |
| Apr 7, 9:57 AM EDT | Red Flag Warning | LWX | 9 hr |
| Apr 16, 4:34 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Apr 25, 10:56 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 25, 2:26 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Apr 25, 4:37 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 25, 6:16 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Apr 27, 4:11 AM EDT | Freeze Watch | LWX | 10 hr |
| Apr 27, 1:50 PM EDT | Freeze Warning | LWX | 19 hr |
| Apr 28, 4:16 AM EDT | Freeze Watch | LWX | 10 hr |
| Apr 28, 2:05 PM EDT | Freeze Warning | LWX | 19 hr |
| May 2, 4:45 PM EDT | Mesoscale Discussion | SPC | 60 min |
| May 2, 5:16 PM EDT | Special Weather Statement | LWX | 29 min |
| May 2, 5:43 PM EDT | Severe Thunderstorm Warning | LWX | 32 min |
| May 2, 5:58 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 2, 8:27 PM EDT | Mesoscale Discussion | SPC | 63 min |
| May 7, 3:24 PM EDT | Wind Advisory | LWX | 29 hr |
| May 8, 4:52 AM EDT | Special Weather Statement | LWX | 23 min |
| May 8, 3:03 PM EDT | Freeze Watch | LWX | 25 hr |
| May 9, 3:51 PM EDT | Freeze Warning | LWX | 16 hr |
| May 14, 11:56 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 14, 2:29 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 14, 4:12 PM EDT | Special Weather Statement | LWX | 48 min |
| May 14, 4:17 PM EDT | Special Weather Statement | LWX | 43 min |
| May 14, 6:28 PM EDT | Severe Thunderstorm Warning | LWX | 34 min |
| May 16, 5:48 PM EDT | Flash Flood Watch | LWX | 12 hr |
| May 20, 3:13 AM EDT | Dense Fog Advisory | LWX | 6 hr |
| May 27, 2:47 PM EDT | Special Weather Statement | LWX | 28 min |
| May 27, 5:48 PM EDT | Severe Thunderstorm Warning | LWX | 42 min |
| May 27, 5:51 PM EDT | Flash Flood Warning | LWX | 2 hr |
| May 27, 6:43 PM EDT | Severe Thunderstorm Warning | LWX | 47 min |
| May 28, 12:36 PM EDT | Special Weather Statement | LWX | 24 min |
| May 28, 1:03 PM EDT | Special Weather Statement | LWX | 27 min |
| May 28, 1:32 PM EDT | Special Weather Statement | LWX | 28 min |
| May 28, 3:12 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 28, 3:54 PM EDT | Special Weather Statement | LWX | 36 min |
| May 28, 4:22 PM EDT | Mesoscale Discussion | SPC | 53 min |
| May 28, 4:37 PM EDT | Special Weather Statement | LWX | 38 min |
| May 28, 4:39 PM EDT | Flash Flood Warning | LWX | 2 hr |
| May 28, 5:01 PM EDT | Flash Flood Warning | LWX | 67 min |
| May 31, 12:39 PM EDT | Flash Flood Watch | LWX | 8 hr |
| May 31, 12:55 PM EDT | Severe Thunderstorm Warning | LWX | 35 min |
| May 31, 1:10 PM EDT | Flash Flood Warning | LWX | 3 hr |
| May 31, 1:45 PM EDT | Special Weather Statement | LWX | 45 min |
| May 31, 2:25 PM EDT | Special Weather Statement | LWX | 65 min |
| May 31, 5:34 PM EDT | Special Weather Statement | LWX | 41 min |
| May 31, 5:48 PM EDT | Flash Flood Warning | LWX | 117 min |
| Jun 3, 1:32 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 3, 3:36 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Jun 5, 4:21 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Jun 6, 12:59 PM EDT | Special Weather Statement | LWX | 31 min |
| Jun 6, 12:59 PM EDT | Special Weather Statement | PBZ | 16 min |
| Jun 16, 1:39 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jun 22, 11:35 AM EDT | Mesoscale Discussion | SPC | 25 min |
| Jun 23, 7:50 PM EDT | Special Weather Statement | LWX | 40 min |
| Jun 23, 7:59 PM EDT | Severe Thunderstorm Warning | LWX | 31 min |
| Jun 24, 12:16 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Jun 24, 12:28 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 24, 12:56 PM EDT | Severe Thunderstorm Warning | LWX | 64 min |
| Jun 24, 1:51 PM EDT | Severe Thunderstorm Warning | LWX | 69 min |
| Jun 24, 1:55 PM EDT | Special Weather Statement | LWX | 80 min |
| Jun 24, 2:34 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 28, 12:26 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 9, 5:32 PM EDT | Flash Flood Watch | LWX | 6 hr |
| Jul 25, 10:48 AM EDT | Mesoscale Discussion | SPC | 27 min |
| Jul 25, 11:29 AM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 25, 12:43 PM EDT | Special Weather Statement | LWX | 62 min |
| Jul 25, 12:50 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Jul 25, 12:54 PM EDT | Severe Thunderstorm Warning | LWX | 66 min |
| Aug 4, 5:30 PM EDT | Mesoscale Discussion | SPC | 30 min |
| Aug 4, 5:34 PM EDT | Severe Thunderstorm Warning | LWX | 56 min |
| Aug 4, 5:52 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 4, 7:48 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Aug 4, 11:52 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Aug 5, 1:19 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 5, 3:20 PM EDT | Severe Thunderstorm Warning | LWX | 55 min |
| Aug 5, 3:56 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Aug 12, 1:52 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Sep 7, 2:39 PM EDT | Fire Weather Watch | LWX | 19 hr |
| Sep 8, 9:42 AM EDT | Red Flag Warning | LWX | 9 hr |
| Sep 29, 2:21 AM EDT | Flash Flood Watch | LWX | 50 hr |
| Oct 16, 5:38 PM EDT | Frost Advisory | LWX | 9 hr |
| Oct 19, 3:25 PM EDT | Frost Advisory | LWX | 17 hr |
| Oct 21, 5:10 AM EDT | Freeze Watch | LWX | 9 hr |
| Oct 21, 9:31 AM EDT | Red Flag Warning | LWX | 10 hr |
| Oct 22, 8:59 AM EDT | Freeze Watch | LWX | 5 hr |
| Oct 22, 2:27 PM EDT | Freeze Warning | LWX | 19 hr |
| Oct 26, 2:43 PM EDT | Wind Advisory | LWX | 11 hr |
| Oct 26, 6:21 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Oct 26, 7:19 PM EDT | Tornado Watch | SPC | 12 hr |
| Oct 26, 11:05 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Oct 27, 12:24 AM EDT | Mesoscale Discussion | SPC | 66 min |
| Nov 5, 1:00 AM EDT | Winter Weather Advisory | LWX | 18 hr |
| Nov 16, 2:19 PM EST | Wind Advisory | LWX | 25 hr |
| Nov 16, 7:38 PM EST | Special Weather Statement | LWX | 82 min |
| Nov 24, 2:06 PM EST | Winter Weather Advisory | LWX | 21 hr |
| Nov 26, 11:55 PM EST | Wind Advisory | LWX | 9 hr |
| Nov 29, 3:20 PM EST | Flash Flood Watch | LWX | 44 hr |
| Nov 30, 3:12 AM EST | Wind Advisory | LWX | 32 hr |
| Dec 1, 2:05 AM EST | Flash Flood Warning | LWX | 8 hr |
| Dec 1, 10:02 AM EST | Areal Flood Warning | LWX | 3 hr |
| Dec 4, 1:24 PM EST | Winter Storm Watch | LWX | 14 hr |
| Dec 5, 3:05 AM EST | Winter Storm Warning | LWX | 63 hr |
| Dec 5, 11:11 AM EST | Wind Advisory | LWX | 15 hr |
| Dec 6, 8:53 AM EST | Wind Advisory | LWX | 11 hr |
| Dec 6, 11:00 AM EST | Blizzard Warning | LWX | 17 hr |
| Dec 7, 4:37 PM EST | Wind Chill Advisory | LWX | 16 hr |
| Dec 8, 2:35 PM EST | Wind Chill Advisory | LWX | 15 hr |
| Dec 10, 8:35 PM EST | Winter Storm Watch | LWX | 32 hr |
| Dec 11, 2:13 PM EST | Winter Weather Advisory | LWX | 22 hr |
| Dec 12, 3:15 AM EST | Winter Storm Warning | LWX | 59 hr |
| Dec 13, 10:28 AM EST | Wind Advisory | LWX | 36 hr |
| Dec 13, 10:54 AM EST | Wind Chill Advisory | LWX | 46 hr |
| Dec 13, 6:30 PM EST | Wind Chill Warning | LWX | 38 hr |
| Dec 15, 8:41 AM EST | Wind Chill Advisory | LWX | 12 hr |
| Dec 15, 2:21 PM EST | Winter Weather Advisory | LWX | 29 hr |
| Dec 23, 1:30 AM EST | Wind Advisory | LWX | 17 hr |
| Dec 25, 3:42 PM EST | Winter Weather Advisory | LWX | 48 hr |
| Dec 26, 2:42 PM EST | Wind Advisory | LWX | 30 hr |
| Dec 26, 9:37 PM EST | Wind Chill Advisory | LWX | 14 hr |
| Dec 27, 3:49 PM EST | Wind Chill Advisory | LWX | 17 hr |
| Dec 30, 6:54 AM EST | Freezing Rain Advisory | LWX | 5 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 archive20092011
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.