Alert archive / Virginia / Louisa County
Weather alerts in Louisa County, Virginia, 2013
100 weather alerts in 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Louisa County and its neighbors
Each county as a circle sized by its count in 2013. Tap one for its archive.
- Alerts
- 100
- Warnings
- 11
- Watches
- 7
- Advisories
- 3
- Busiest month
- June33 alerts
- Busiest day
- June 13, 20139 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Louisa County, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 11 | 9 | 18% | 10 | 90% | 25 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Wakefield, VA: tornado warnings | 18 | 2 | 89% | 3 | 100% | 16 min |
| NWS Wakefield, VA: severe thunderstorm warnings | 97 | 78 | 20% | 287 | 84% | 21 min |
| NWS Wakefield, VA: flash flood warnings | 14 | 10 | 29% | 31 | 97% | 59 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 30, 12:54 PM EST | Mesoscale Discussion | SPC | 96 min |
| Jan 30, 4:06 PM EST | Mesoscale Discussion | SPC | 114 min |
| Jan 30, 6:31 PM EST | Tornado Watch | SPC | 8 hr |
| Jan 30, 7:16 PM EST | Special Weather Statement | AKQ | 44 min |
| Jan 30, 9:38 PM EST | Mesoscale Discussion | SPC | 67 min |
| Jan 31, 12:01 AM EST | Special Weather Statement | AKQ | 74 min |
| Mar 6, 10:44 AM EST | Areal Flood Advisory | AKQ | 104 days |
| Mar 16, 3:55 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Apr 12, 5:05 AM EDT | Mesoscale Discussion | SPC | 85 min |
| Apr 12, 5:21 AM EDT | Tornado Watch | SPC | 3 hr |
| Apr 12, 6:21 AM EDT | Special Weather Statement | AKQ | 54 min |
| Apr 19, 1:27 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Apr 19, 2:31 PM EDT | Tornado Watch | SPC | 7 hr |
| Apr 19, 4:36 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Apr 19, 5:54 PM EDT | Severe Thunderstorm Warning | AKQ | 51 min |
| Apr 19, 6:23 PM EDT | Severe Thunderstorm Warning | AKQ | 52 min |
| Apr 24, 6:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 7, 3:42 PM EDT | Special Weather Statement | AKQ | 33 min |
| May 7, 4:37 PM EDT | Special Weather Statement | AKQ | 23 min |
| May 7, 6:36 PM EDT | Special Weather Statement | AKQ | 54 min |
| May 10, 9:10 PM EDT | Special Weather Statement | AKQ | 50 min |
| May 11, 1:44 PM EDT | Mesoscale Discussion | SPC | 91 min |
| May 11, 7:11 PM EDT | Mesoscale Discussion | SPC | 64 min |
| May 16, 12:04 PM EDT | Mesoscale Discussion | SPC | 56 min |
| May 16, 1:57 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| May 16, 2:06 PM EDT | Special Weather Statement | AKQ | 54 min |
| May 16, 3:02 PM EDT | Special Weather Statement | AKQ | 58 min |
| May 16, 4:05 PM EDT | Severe Thunderstorm Warning | AKQ | 40 min |
| May 23, 3:37 PM EDT | Mesoscale Discussion | SPC | 53 min |
| May 23, 3:47 PM EDT | Special Weather Statement | AKQ | 58 min |
| May 23, 9:42 PM EDT | Special Weather Statement | AKQ | 48 min |
| May 23, 10:26 PM EDT | Special Weather Statement | AKQ | 34 min |
| May 28, 4:01 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 28, 6:35 PM EDT | Special Weather Statement | AKQ | 40 min |
| Jun 2, 4:41 PM EDT | Special Weather Statement | AKQ | 49 min |
| Jun 2, 6:42 PM EDT | Special Weather Statement | AKQ | 63 min |
| Jun 9, 4:26 PM EDT | Special Weather Statement | AKQ | 34 min |
| Jun 10, 4:28 AM EDT | Special Weather Statement | AKQ | 47 min |
| Jun 10, 12:56 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 10, 2:02 PM EDT | Tornado Watch | SPC | 10 hr |
| Jun 10, 4:38 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 10, 5:40 PM EDT | Special Weather Statement | AKQ | 65 min |
| Jun 10, 6:14 PM EDT | Severe Thunderstorm Warning | AKQ | 46 min |
| Jun 13, 2:40 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 5:27 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 11:38 AM EDT | Mesoscale Discussion | SPC | 67 min |
| Jun 13, 12:19 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 13, 1:40 PM EDT | Special Weather Statement | AKQ | 50 min |
| Jun 13, 2:00 PM EDT | Severe Thunderstorm Warning | AKQ | 45 min |
| Jun 13, 2:20 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Jun 13, 2:45 PM EDT | Severe Thunderstorm Warning | AKQ | 45 min |
| Jun 13, 3:24 PM EDT | Severe Thunderstorm Warning | AKQ | 51 min |
| Jun 18, 1:54 PM EDT | Special Weather Statement | AKQ | 51 min |
| Jun 18, 2:44 PM EDT | Special Weather Statement | AKQ | 46 min |
| Jun 24, 4:39 PM EDT | Special Weather Statement | AKQ | 66 min |
| Jun 24, 4:58 PM EDT | Severe Thunderstorm Warning | AKQ | 47 min |
| Jun 26, 1:19 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 26, 2:55 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 26, 3:51 PM EDT | Special Weather Statement | AKQ | 54 min |
| Jun 26, 4:26 PM EDT | Severe Thunderstorm Warning | AKQ | 49 min |
| Jun 26, 4:38 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 26, 5:15 PM EDT | Severe Thunderstorm Warning | AKQ | 45 min |
| Jun 28, 2:51 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 28, 4:42 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Jun 30, 11:48 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 30, 4:06 PM EDT | Special Weather Statement | AKQ | 54 min |
| Jun 30, 5:05 PM EDT | Special Weather Statement | AKQ | 55 min |
| Jul 3, 2:19 AM EDT | Special Weather Statement | AKQ | 56 min |
| Jul 3, 3:17 AM EDT | Special Weather Statement | AKQ | 58 min |
| Jul 3, 2:18 PM EDT | Special Weather Statement | AKQ | 27 min |
| Jul 10, 4:46 PM EDT | Special Weather Statement | AKQ | 44 min |
| Jul 10, 6:23 PM EDT | Areal Flood Advisory | AKQ | 2 hr |
| Jul 10, 9:50 PM EDT | Areal Flood Advisory | AKQ | 2 hr |
| Jul 17, 2:22 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jul 20, 8:15 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Jul 21, 3:02 PM EDT | Special Weather Statement | AKQ | 58 min |
| Jul 28, 1:34 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Jul 28, 3:59 PM EDT | Special Weather Statement | AKQ | 46 min |
| Aug 1, 4:10 PM EDT | Special Weather Statement | AKQ | 65 min |
| Aug 1, 5:14 PM EDT | Special Weather Statement | AKQ | 61 min |
| Aug 10, 11:30 AM EDT | Special Weather Statement | AKQ | 60 min |
| Aug 10, 11:56 AM EDT | Mesoscale Discussion | SPC | 94 min |
| Aug 10, 12:22 PM EDT | Special Weather Statement | AKQ | 38 min |
| Aug 10, 1:15 PM EDT | Severe Thunderstorm Warning | AKQ | 45 min |
| Aug 21, 8:46 PM EDT | Special Weather Statement | AKQ | 59 min |
| Aug 22, 2:26 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 23, 9:56 AM EDT | Special Weather Statement | AKQ | 64 min |
| Aug 23, 10:55 AM EDT | Special Weather Statement | AKQ | 65 min |
| Aug 27, 4:35 PM EDT | Special Weather Statement | AKQ | 40 min |
| Aug 31, 5:28 PM EDT | Special Weather Statement | AKQ | 62 min |
| Sep 12, 5:50 PM EDT | Special Weather Statement | AKQ | 55 min |
| Sep 12, 6:48 PM EDT | Special Weather Statement | AKQ | 87 min |
| Sep 21, 7:32 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 7, 8:10 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 7, 10:11 AM EDT | Special Weather Statement | AKQ | 69 min |
| Oct 7, 10:36 AM EDT | Mesoscale Discussion | SPC | 114 min |
| Oct 7, 11:19 AM EDT | Special Weather Statement | AKQ | 41 min |
| Dec 6, 11:08 AM EST | Special Weather Statement | AKQ | 52 min |
| Dec 8, 11:05 AM EST | Mesoscale Discussion | SPC | 3 hr |
| Dec 22, 10:44 AM EST | Special Weather Statement | AKQ | 61 min |
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 | 11 |
| Severe Thunderstorm Watch | 3 |
| Tornado Watch | 4 |
| Mesoscale Discussion | 33 |
| Special Weather Statement | 46 |
| Flooding | |
| Areal Flood Advisory | 3 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20122014
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.