Alert archive / West Virginia / Harrison County
Weather alerts in Harrison County, West Virginia, 2009
81 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Harrison County and its neighbors
Each county as a circle sized by its count in 2009. Tap one for its archive.
- Alerts
- 81
- Warnings
- 21
- Watches
- 23
- Advisories
- 15
- Busiest month
- June27 alerts
- Busiest day
- June 9, 200910 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Harrison County, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 14 | 8 | 43% | 8 | 88% | 31 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Charleston, WV: tornado warnings | 7 | 1 | 86% | 1 | 100% | 9 min |
| NWS Charleston, WV: severe thunderstorm warnings | 160 | 67 | 58% | 209 | 77% | 24 min |
| NWS Charleston, WV: flash flood warnings | 30 | 10 | 67% | 24 | 92% | 77 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 5, 3:02 PM EST | Freezing Rain Advisory | RLX | 19 hr |
| Jan 15, 5:22 AM EST | Wind Chill Advisory | RLX | 31 hr |
| Jan 17, 11:36 PM EST | Freezing Rain Advisory | RLX | 11 hr |
| Jan 25, 4:55 AM EST | Winter Storm Watch | RLX | 35 hr |
| Jan 26, 4:15 PM EST | Winter Storm Warning | RLX | 48 hr |
| Jan 27, 7:25 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 10, 3:47 AM EST | High Wind Watch | RLX | 25 hr |
| Feb 11, 4:17 AM EST | High Wind Warning | RLX | 41 hr |
| Feb 11, 5:32 PM EST | Mesoscale Discussion | SPC | 88 min |
| Feb 11, 5:53 PM EST | Severe Thunderstorm Watch | SPC | 4 hr |
| Feb 11, 6:24 PM EST | Severe Thunderstorm Warning | RLX | 66 min |
| Feb 12, 4:36 AM EST | Wind Advisory | RLX | 12 hr |
| Feb 22, 9:14 AM EST | Winter Weather Advisory | RLX | 10 hr |
| Apr 5, 7:29 PM EDT | Wind Advisory | RLX | 9 hr |
| Apr 5, 8:53 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 6, 12:08 AM EDT | Mesoscale Discussion | SPC | 67 min |
| May 3, 2:56 PM EDT | Flood Watch | RLX | 25 hr |
| May 4, 7:08 AM EDT | Areal Flood Advisory | RLX | 3 hr |
| May 4, 9:54 AM EDT | Areal Flood Advisory | RLX | 3 hr |
| May 4, 12:47 PM EDT | Areal Flood Advisory | RLX | 3 hr |
| May 4, 1:43 PM EDT | River Flood Warning | RLX | 20 hr |
| May 5, 4:58 PM EDT | Flood Watch | RLX | 37 hr |
| May 8, 3:57 AM EDT | Flood Watch | RLX | 38 hr |
| May 16, 12:05 PM EDT | Mesoscale Discussion | SPC | 55 min |
| May 16, 2:46 PM EDT | Mesoscale Discussion | SPC | 59 min |
| May 16, 3:23 PM EDT | Severe Thunderstorm Warning | RLX | 37 min |
| May 16, 3:42 PM EDT | Severe Thunderstorm Warning | RLX | 48 min |
| May 17, 3:54 AM EDT | Frost Advisory | RLX | 29 hr |
| May 17, 3:54 AM EDT | Freeze Warning | RLX | 29 hr |
| May 18, 4:22 AM EDT | Frost Advisory | RLX | 28 hr |
| May 18, 4:22 AM EDT | Freeze Warning | RLX | 28 hr |
| May 27, 1:45 PM EDT | Flash Flood Watch | RLX | 38 hr |
| May 28, 4:54 PM EDT | Mesoscale Discussion | SPC | 66 min |
| May 28, 7:42 PM EDT | Severe Thunderstorm Warning | RLX | 63 min |
| May 30, 4:49 PM EDT | Severe Thunderstorm Watch | SPC | 11 hr |
| May 30, 11:36 PM EDT | Severe Thunderstorm Warning | RLX | 31 min |
| Jun 2, 3:18 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 2, 4:47 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 2, 7:13 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Jun 2, 7:59 PM EDT | Severe Thunderstorm Warning | RLX | 46 min |
| Jun 2, 9:19 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Jun 3, 11:52 AM EDT | Flash Flood Watch | RLX | 46 hr |
| Jun 3, 12:12 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Jun 8, 3:24 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jun 9, 12:45 PM EDT | Severe Thunderstorm Warning | RLX | 45 min |
| Jun 9, 1:35 PM EDT | Severe Thunderstorm Warning | RLX | 40 min |
| Jun 9, 1:38 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 9, 2:07 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 9, 2:13 PM EDT | Severe Thunderstorm Warning | RLX | 47 min |
| Jun 9, 2:53 PM EDT | Severe Thunderstorm Warning | RLX | 53 min |
| Jun 9, 3:36 PM EDT | Severe Thunderstorm Warning | RLX | 39 min |
| Jun 9, 4:03 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jun 9, 4:10 PM EDT | Severe Thunderstorm Warning | RLX | 50 min |
| Jun 9, 4:53 PM EDT | Severe Thunderstorm Warning | RLX | 52 min |
| Jun 17, 3:48 PM EDT | Tornado Watch | SPC | 6 hr |
| Jun 17, 6:33 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jun 17, 9:31 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Jun 17, 9:56 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jun 19, 3:23 PM EDT | Flash Flood Watch | RLX | 21 hr |
| Jun 19, 5:56 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Jun 19, 6:28 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jun 20, 12:46 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 20, 3:14 AM EDT | Mesoscale Discussion | SPC | 91 min |
| Jul 17, 6:13 PM EDT | Severe Thunderstorm Warning | RLX | 36 min |
| Jul 21, 1:56 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Jul 30, 2:45 PM EDT | Flash Flood Watch | RLX | 22 hr |
| Aug 12, 12:36 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Aug 12, 1:35 PM EDT | Flash Flood Watch | RLX | 8 hr |
| Aug 29, 3:36 AM EDT | Flash Flood Watch | RLX | 3 hr |
| Sep 25, 3:18 PM EDT | Flash Flood Watch | RLX | 30 hr |
| Sep 30, 4:38 AM EDT | Frost Advisory | RLX | 28 hr |
| Oct 9, 5:52 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Oct 17, 2:44 PM EDT | Freeze Watch | RLX | 19 hr |
| Oct 18, 9:57 AM EDT | Freeze Warning | RLX | 24 hr |
| Dec 4, 2:55 PM EST | Winter Weather Advisory | RLX | 26 hr |
| Dec 8, 10:14 AM EST | Wind Advisory | RLX | 36 hr |
| Dec 9, 11:02 AM EST | Mesoscale Discussion | SPC | 88 min |
| Dec 17, 3:52 PM EST | Winter Storm Watch | RLX | 13 hr |
| Dec 18, 4:30 AM EST | Winter Storm Warning | RLX | 47 hr |
| Dec 19, 6:57 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 27, 2:49 PM EST | Winter Weather Advisory | RLX | 40 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 archive20082010
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.