Alert archive / Virginia / Highland County
Weather alerts in Highland County, Virginia, 2008
44 weather alerts in 2008, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Highland County and its neighbors
Each county as a circle sized by its count in 2008. Tap one for its archive.
- Alerts
- 44
- Warnings
- 4
- Watches
- 14
- Advisories
- 0
- Busiest month
- June23 alerts
- Busiest day
- June 4, 20087 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Highland County, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 3 | 1 | 67% | 1 | 100% | 25 min |
| Flash flood warnings | 1 | 0 | 100% | 0 |
Each office's whole area, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Baltimore/Washington: tornado warnings | 36 | 8 | 78% | 21 | 43% | 18 min |
| NWS Baltimore/Washington: severe thunderstorm warnings | 391 | 220 | 44% | 579 | 76% | 21 min |
| NWS Baltimore/Washington: flash flood warnings | 23 | 11 | 52% | 53 | 75% | 117 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 17, 7:51 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 1, 7:36 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 6, 4:49 AM EST | Mesoscale Discussion | SPC | 86 min |
| Feb 6, 6:09 PM EST | Mesoscale Discussion | SPC | 66 min |
| Mar 4, 7:34 PM EST | Mesoscale Discussion | SPC | 56 min |
| Apr 11, 6:56 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Apr 11, 7:26 PM EDT | Severe Thunderstorm Warning | LWX | 49 min |
| May 8, 6:12 PM EDT | Mesoscale Discussion | SPC | 63 min |
| May 8, 6:48 PM EDT | Tornado Watch | SPC | 9 hr |
| May 31, 10:25 AM EDT | Tornado Watch | SPC | 7 hr |
| May 31, 3:07 PM EDT | Tornado Watch | SPC | 6 hr |
| Jun 4, 12:18 AM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 4, 2:26 AM EDT | Tornado Watch | SPC | 6 hr |
| Jun 4, 7:23 AM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 4, 12:49 PM EDT | Tornado Watch | SPC | 7 hr |
| Jun 4, 4:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 4, 7:13 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Jun 4, 7:34 PM EDT | Tornado Watch | SPC | 5 hr |
| Jun 10, 2:27 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Jun 10, 2:54 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 10, 3:59 PM EDT | Severe Thunderstorm Warning | LWX | 61 min |
| Jun 16, 11:46 AM EDT | Mesoscale Discussion | SPC | 59 min |
| Jun 16, 12:54 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 16, 1:21 PM EDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jun 16, 8:25 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Jun 22, 12:16 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Jun 22, 1:15 PM EDT | Severe Thunderstorm Watch | SPC | 11 hr |
| Jun 22, 3:48 PM EDT | Severe Thunderstorm Warning | LWX | 17 min |
| Jun 22, 4:28 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jun 23, 5:00 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 28, 8:06 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Jun 29, 4:37 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 29, 9:30 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 30, 11:01 AM EDT | Mesoscale Discussion | SPC | 119 min |
| Jul 6, 1:44 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Jul 7, 1:20 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Jul 7, 1:37 PM EDT | Flash Flood Warning | LWX | 4 hr |
| Jul 22, 7:59 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Jul 23, 1:28 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Jul 23, 3:25 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 27, 11:03 AM EDT | Mesoscale Discussion | SPC | 57 min |
| Aug 2, 1:56 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 2, 7:09 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Aug 10, 1:36 PM EDT | Severe Thunderstorm Watch | SPC | 7 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 | 3 |
| Severe Thunderstorm Watch | 8 |
| Tornado Watch | 6 |
| Mesoscale Discussion | 26 |
| Flooding | |
| Flash Flood Warning | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20072009
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.