Alert archive / Virginia / Pittsylvania County
Weather alerts in Pittsylvania County, Virginia, 2012
196 weather alerts in 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Pittsylvania County and its neighbors
Each county as a circle sized by its count in 2012. Tap one for its archive.
- Alerts
- 196
- Warnings
- 67
- Watches
- 21
- Advisories
- 25
- Busiest month
- July57 alerts
- Busiest day
- July 1, 201211 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 1 tornado warnings covering Pittsylvania County in 2012 had a tornado report inside them.
Pittsylvania County, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 58 | 46 | 21% | 35 | 86% | 26 min |
| Flash flood warnings | 1 | 1 | 0% | 1 | 100% | 3 min |
Each office's whole area, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Blacksburg, VA: tornado warnings | 17 | 0 | 100% | 0 | ||
| NWS Blacksburg, VA: severe thunderstorm warnings | 359 | 271 | 25% | 793 | 83% | 23 min |
| NWS Blacksburg, VA: flash flood warnings | 50 | 27 | 46% | 60 | 77% | 56 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 9, 10:34 PM EST | Dense Fog Advisory | RNK | 10 hr |
| Jan 11, 6:28 PM EST | Special Weather Statement | RNK | 62 min |
| Jan 11, 7:09 PM EST | Special Weather Statement | RNK | 66 min |
| Jan 15, 12:34 AM EST | Special Weather Statement | RNK | 116 min |
| Jan 17, 6:39 PM EST | Special Weather Statement | RNK | 51 min |
| Jan 24, 1:29 AM EST | Dense Fog Advisory | RNK | 10 hr |
| Feb 16, 10:28 PM EST | Dense Fog Advisory | RNK | 5 hr |
| Feb 18, 4:36 PM EST | Winter Storm Warning | RNK | 34 hr |
| Feb 18, 4:36 PM EST | Winter Weather Advisory | RNK | 34 hr |
| Feb 19, 12:47 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 23, 2:26 PM EST | Wind Advisory | RNK | 34 hr |
| Feb 24, 12:00 PM EST | Mesoscale Discussion | SPC | 60 min |
| Feb 24, 2:18 PM EST | Severe Thunderstorm Warning | RNK | 42 min |
| Feb 24, 2:47 PM EST | Severe Thunderstorm Warning | RNK | 19 min |
| Feb 24, 3:24 PM EST | Mesoscale Discussion | SPC | 66 min |
| Feb 28, 3:19 AM EST | Dense Fog Advisory | RNK | 5 hr |
| Mar 4, 2:22 PM EST | Winter Weather Advisory | RNK | 22 hr |
| Mar 20, 3:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Mar 20, 4:34 PM EDT | Severe Thunderstorm Warning | RNK | 56 min |
| Mar 20, 5:42 PM EDT | Severe Thunderstorm Warning | RNK | 63 min |
| Mar 20, 6:03 PM EDT | Severe Thunderstorm Warning | RNK | 35 min |
| Mar 20, 6:12 PM EDT | Flash Flood Warning | RNK | 4 hr |
| Mar 20, 6:43 PM EDT | Severe Thunderstorm Warning | RNK | 62 min |
| Mar 21, 5:52 AM EDT | Dense Fog Advisory | RNK | 4 hr |
| Mar 21, 1:22 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Mar 24, 12:46 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Mar 24, 2:54 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Mar 24, 3:38 PM EDT | Tornado Watch | SPC | 7 hr |
| Mar 24, 5:38 PM EDT | Severe Thunderstorm Warning | RNK | 67 min |
| Mar 24, 6:19 PM EDT | Tornado Warning | RNK | 41 min |
| Mar 24, 6:43 PM EDT | Tornado Watch | SPC | 4 hr |
| Mar 24, 7:04 PM EDT | Severe Thunderstorm Warning | RNK | 56 min |
| Mar 24, 7:39 PM EDT | Severe Thunderstorm Warning | RNK | 81 min |
| Mar 25, 6:50 AM EDT | Flash Flood Watch | RNK | 14 hr |
| Mar 28, 8:45 PM EDT | Severe Thunderstorm Warning | RNK | 35 min |
| Mar 28, 9:25 PM EDT | Special Weather Statement | RNK | 35 min |
| Mar 28, 9:27 PM EDT | Special Weather Statement | RNK | 33 min |
| Apr 4, 1:31 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Apr 4, 5:15 PM EDT | Special Weather Statement | RNK | 60 min |
| Apr 5, 3:21 PM EDT | Freeze Watch | RNK | 12 hr |
| Apr 6, 3:37 AM EDT | Freeze Warning | RNK | 30 hr |
| Apr 8, 7:09 PM EDT | Red Flag Warning | RNK | 25 hr |
| Apr 9, 10:51 AM EDT | Fire Weather Watch | RNK | 16 hr |
| Apr 9, 8:51 PM EDT | Red Flag Warning | RNK | 23 hr |
| Apr 10, 3:52 PM EDT | Freeze Watch | RNK | 23 hr |
| Apr 11, 3:13 PM EDT | Freeze Warning | RNK | 18 hr |
| Apr 12, 8:49 PM EDT | Frost Advisory | RNK | 12 hr |
| May 1, 5:46 AM EDT | Special Weather Statement | RNK | 59 min |
| May 1, 12:43 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 1, 2:12 PM EDT | Special Weather Statement | RNK | 33 min |
| May 1, 2:27 PM EDT | Severe Thunderstorm Warning | RNK | 63 min |
| May 1, 3:02 PM EDT | Severe Thunderstorm Warning | RNK | 58 min |
| May 1, 3:12 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 1, 3:14 PM EDT | Severe Thunderstorm Warning | RNK | 76 min |
| May 1, 3:28 PM EDT | Severe Thunderstorm Warning | RNK | 62 min |
| May 1, 3:54 PM EDT | Severe Thunderstorm Warning | RNK | 66 min |
| May 2, 1:41 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 3, 6:41 PM EDT | Severe Thunderstorm Warning | RNK | 48 min |
| May 3, 7:57 PM EDT | Special Weather Statement | RNK | 33 min |
| May 4, 4:45 PM EDT | Special Weather Statement | RNK | 45 min |
| May 4, 5:30 PM EDT | Special Weather Statement | RNK | 30 min |
| May 15, 2:08 PM EDT | Mesoscale Discussion | SPC | 67 min |
| May 15, 6:57 PM EDT | Severe Thunderstorm Warning | RNK | 63 min |
| May 21, 9:06 PM EDT | Special Weather Statement | RNK | 39 min |
| May 22, 8:14 PM EDT | Severe Thunderstorm Warning | RNK | 42 min |
| May 29, 10:40 PM EDT | Special Weather Statement | RNK | 110 min |
| May 31, 5:14 PM EDT | Special Weather Statement | RNK | 31 min |
| Jun 1, 1:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 1, 1:28 PM EDT | Tornado Watch | SPC | 8 hr |
| Jun 1, 3:35 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Jun 12, 10:14 PM EDT | Special Weather Statement | RNK | 46 min |
| Jun 12, 10:26 PM EDT | Severe Thunderstorm Warning | RNK | 64 min |
| Jun 18, 3:58 PM EDT | Severe Thunderstorm Warning | RNK | 62 min |
| Jun 22, 1:38 PM EDT | Special Weather Statement | RNK | 52 min |
| Jun 22, 1:55 PM EDT | Severe Thunderstorm Warning | RNK | 55 min |
| Jun 22, 2:12 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 22, 2:38 PM EDT | Severe Thunderstorm Warning | RNK | 67 min |
| Jun 22, 2:45 PM EDT | Severe Thunderstorm Warning | RNK | 60 min |
| Jun 22, 6:42 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Jun 24, 12:53 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 25, 12:55 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 29, 3:46 AM EDT | Heat Advisory | RNK | 16 hr |
| Jun 29, 3:33 PM EDT | Excessive Heat Warning | RNK | 28 hr |
| Jun 29, 3:33 PM EDT | Heat Advisory | RNK | 28 hr |
| Jun 29, 6:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 29, 6:34 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 29, 7:51 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Jun 29, 9:02 PM EDT | Severe Thunderstorm Warning | RNK | 58 min |
| Jun 29, 9:23 PM EDT | Severe Thunderstorm Warning | RNK | 67 min |
| Jun 29, 9:32 PM EDT | Severe Thunderstorm Warning | RNK | 73 min |
| Jun 29, 10:31 PM EDT | Severe Thunderstorm Warning | RNK | 44 min |
| Jun 30, 3:06 PM EDT | Heat Advisory | RNK | 29 hr |
| Jun 30, 4:27 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 30, 7:39 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 30, 9:05 PM EDT | Severe Thunderstorm Warning | RNK | 40 min |
| Jul 1, 12:02 AM EDT | Severe Thunderstorm Warning | RNK | 58 min |
| Jul 1, 12:43 AM EDT | Severe Thunderstorm Warning | RNK | 62 min |
| Jul 1, 9:27 AM EDT | Mesoscale Discussion | SPC | 63 min |
| Jul 1, 9:44 AM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 1, 11:38 AM EDT | Mesoscale Discussion | SPC | 97 min |
| Jul 1, 12:53 PM EDT | Severe Thunderstorm Warning | RNK | 52 min |
| Jul 1, 12:56 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 1, 1:16 PM EDT | Special Weather Statement | RNK | 59 min |
| Jul 1, 1:22 PM EDT | Severe Thunderstorm Warning | RNK | 36 min |
| Jul 1, 7:04 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Jul 1, 9:06 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 2, 12:24 AM EDT | Severe Thunderstorm Warning | RNK | 66 min |
| Jul 2, 12:39 AM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 2, 1:12 AM EDT | Severe Thunderstorm Warning | RNK | 93 min |
| Jul 3, 3:27 PM EDT | Severe Thunderstorm Warning | RNK | 63 min |
| Jul 3, 4:06 PM EDT | Special Weather Statement | RNK | 24 min |
| Jul 3, 4:15 PM EDT | Severe Thunderstorm Warning | RNK | 42 min |
| Jul 3, 4:58 PM EDT | Severe Thunderstorm Warning | RNK | 62 min |
| Jul 3, 6:23 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 5, 3:48 AM EDT | Heat Advisory | RNK | 16 hr |
| Jul 5, 4:02 PM EDT | Special Weather Statement | RNK | 58 min |
| Jul 5, 4:20 PM EDT | Severe Thunderstorm Warning | RNK | 55 min |
| Jul 5, 4:46 PM EDT | Severe Thunderstorm Warning | RNK | 36 min |
| Jul 5, 5:01 PM EDT | Severe Thunderstorm Warning | RNK | 59 min |
| Jul 6, 3:59 AM EDT | Heat Advisory | RNK | 40 hr |
| Jul 7, 1:17 PM EDT | Excessive Heat Warning | RNK | 7 hr |
| Jul 7, 3:33 PM EDT | Heat Advisory | RNK | 27 hr |
| Jul 9, 1:36 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Jul 9, 3:19 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 9, 5:53 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jul 11, 4:58 PM EDT | Special Weather Statement | RNK | 32 min |
| Jul 13, 9:25 PM EDT | Special Weather Statement | RNK | 65 min |
| Jul 14, 11:52 AM EDT | Flash Flood Watch | RNK | 9 hr |
| Jul 14, 2:23 PM EDT | Special Weather Statement | RNK | 37 min |
| Jul 15, 3:42 PM EDT | Special Weather Statement | RNK | 33 min |
| Jul 16, 5:58 PM EDT | Severe Thunderstorm Warning | RNK | 57 min |
| Jul 20, 2:47 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 21, 5:04 PM EDT | Severe Thunderstorm Warning | RNK | 56 min |
| Jul 21, 5:15 PM EDT | Severe Thunderstorm Warning | RNK | 34 min |
| Jul 23, 12:58 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 23, 2:29 PM EDT | Severe Thunderstorm Warning | RNK | 61 min |
| Jul 23, 3:08 PM EDT | Severe Thunderstorm Warning | RNK | 22 min |
| Jul 23, 3:33 PM EDT | Special Weather Statement | RNK | 42 min |
| Jul 23, 3:40 PM EDT | Special Weather Statement | RNK | 35 min |
| Jul 23, 4:06 PM EDT | Severe Thunderstorm Warning | RNK | 35 min |
| Jul 24, 1:08 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 26, 5:36 AM EDT | Heat Advisory | RNK | 13 hr |
| Jul 27, 1:08 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Jul 27, 1:54 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 27, 3:19 PM EDT | Severe Thunderstorm Warning | RNK | 56 min |
| Jul 27, 4:12 PM EDT | Severe Thunderstorm Warning | RNK | 63 min |
| Jul 27, 4:52 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Jul 28, 5:59 PM EDT | Special Weather Statement | RNK | 61 min |
| Jul 28, 6:27 PM EDT | Severe Thunderstorm Warning | RNK | 48 min |
| Jul 30, 8:16 PM EDT | Severe Thunderstorm Warning | RNK | 59 min |
| Jul 30, 9:24 PM EDT | Special Weather Statement | RNK | 66 min |
| Aug 2, 3:43 PM EDT | Special Weather Statement | RNK | 47 min |
| Aug 2, 3:52 PM EDT | Areal Flood Advisory | RNK | 2 hr |
| Aug 3, 3:34 PM EDT | Special Weather Statement | RNK | 56 min |
| Aug 3, 5:16 PM EDT | Special Weather Statement | RNK | 59 min |
| Aug 6, 7:14 PM EDT | Areal Flood Advisory | RNK | 109 min |
| Aug 7, 4:42 PM EDT | Special Weather Statement | RNK | 33 min |
| Aug 7, 5:17 PM EDT | Special Weather Statement | RNK | 28 min |
| Aug 7, 5:30 PM EDT | Severe Thunderstorm Warning | RNK | 60 min |
| Aug 7, 6:05 PM EDT | Special Weather Statement | RNK | 25 min |
| Aug 7, 6:13 PM EDT | Areal Flood Advisory | RNK | 3 hr |
| Aug 7, 6:43 PM EDT | Special Weather Statement | RNK | 32 min |
| Aug 8, 1:27 PM EDT | Severe Thunderstorm Warning | RNK | 63 min |
| Aug 10, 12:17 AM EDT | Special Weather Statement | RNK | 58 min |
| Aug 10, 7:31 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Aug 15, 3:27 PM EDT | Severe Thunderstorm Warning | RNK | 43 min |
| Aug 20, 4:01 PM EDT | Special Weather Statement | RNK | 29 min |
| Aug 20, 4:30 PM EDT | Special Weather Statement | RNK | 30 min |
| Aug 22, 4:33 AM EDT | Special Weather Statement | RNK | 42 min |
| Aug 22, 5:27 AM EDT | Areal Flood Advisory | RNK | 97 min |
| Sep 2, 2:44 PM EDT | Special Weather Statement | RNK | 31 min |
| Sep 2, 3:17 PM EDT | Severe Thunderstorm Warning | RNK | 58 min |
| Sep 2, 7:10 PM EDT | Severe Thunderstorm Warning | RNK | 65 min |
| Sep 2, 8:05 PM EDT | Severe Thunderstorm Warning | RNK | 85 min |
| Sep 6, 3:37 PM EDT | Severe Thunderstorm Warning | RNK | 37 min |
| Sep 8, 12:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Sep 8, 1:48 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 8, 3:25 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Sep 8, 3:28 PM EDT | Special Weather Statement | RNK | 62 min |
| Sep 8, 4:29 PM EDT | Special Weather Statement | RNK | 61 min |
| Sep 18, 8:38 AM EDT | Special Weather Statement | RNK | 52 min |
| Sep 18, 8:49 AM EDT | Mesoscale Discussion | SPC | 116 min |
| Sep 18, 10:54 AM EDT | Tornado Watch | SPC | 9 hr |
| Sep 18, 11:19 AM EDT | Mesoscale Discussion | SPC | 86 min |
| Sep 18, 12:33 PM EDT | Special Weather Statement | RNK | 57 min |
| Sep 18, 1:01 PM EDT | Special Weather Statement | RNK | 59 min |
| Sep 18, 1:27 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Sep 22, 4:53 PM EDT | Special Weather Statement | RNK | 52 min |
| Sep 28, 1:54 PM EDT | Severe Thunderstorm Warning | RNK | 66 min |
| Sep 28, 2:36 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Oct 18, 8:55 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 21, 4:00 PM EDT | Frost Advisory | RNK | 17 hr |
| Oct 28, 5:10 PM EDT | Wind Advisory | RNK | 42 hr |
| Nov 2, 4:06 PM EDT | Frost Advisory | RNK | 17 hr |
| Dec 9, 10:28 PM EST | Dense Fog Advisory | RNK | 10 hr |
| Dec 20, 5:17 AM EST | Wind Advisory | RNK | 58 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 | 58 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 12 |
| Tornado Watch | 4 |
| Mesoscale Discussion | 37 |
| Special Weather Statement | 46 |
| Flooding | |
| Flash Flood Warning | 1 |
| Flash Flood Watch | 2 |
| Areal Flood Advisory | 4 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Weather Advisory | 2 |
| Heat | |
| Excessive Heat Warning | 2 |
| Heat Advisory | 7 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 2 |
| Frost Advisory | 3 |
| Wind and dust | |
| Wind Advisory | 3 |
| Fire | |
| Red Flag Warning | 2 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20112013
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.