Alert archive / Virginia / Pittsylvania County
Weather alerts in Pittsylvania County, Virginia, 2020
201 weather alerts in 2020, 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 2020. Tap one for its archive.
- Alerts
- 201
- Warnings
- 74
- Watches
- 16
- Advisories
- 42
- Busiest month
- July35 alerts
- Busiest day
- April 8, 20209 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 4 tornado warnings covering Pittsylvania County in 2020 had a tornado report inside them.
Pittsylvania County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 4 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 31 | 25 | 19% | 14 | 86% | 15 min |
| Flash flood warnings | 8 | 7 | 13% | 9 | 89% | 162 min |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Blacksburg, VA: tornado warnings | 11 | 0 | 100% | 1 | 0% | |
| NWS Blacksburg, VA: severe thunderstorm warnings | 175 | 134 | 23% | 447 | 74% | 20 min |
| NWS Blacksburg, VA: flash flood warnings | 81 | 53 | 35% | 206 | 68% | 95 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 4, 2:08 PM EST | Special Weather Statement | RNK | 22 min |
| Jan 4, 2:44 PM EST | Special Weather Statement | RNK | 61 min |
| Jan 7, 2:07 PM EST | Wind Advisory | RNK | 28 hr |
| Jan 11, 7:37 PM EST | Severe Thunderstorm Watch | SPC | 5 hr |
| Jan 11, 9:43 PM EST | Severe Thunderstorm Warning | RNK | 62 min |
| Jan 11, 10:33 PM EST | Severe Thunderstorm Warning | RNK | 57 min |
| Jan 11, 10:40 PM EST | Severe Thunderstorm Warning | RNK | 35 min |
| Jan 11, 10:59 PM EST | Mesoscale Discussion | SPC | 91 min |
| Jan 11, 11:21 PM EST | Severe Thunderstorm Warning | RNK | 54 min |
| Jan 11, 11:27 PM EST | Severe Thunderstorm Warning | RNK | 63 min |
| Jan 24, 7:42 PM EST | Special Weather Statement | RNK | 63 min |
| Feb 5, 4:46 AM EST | Flood Watch | RNK | 49 hr |
| Feb 6, 9:36 AM EST | River Flood Warning | RNK | 52 hr |
| Feb 6, 9:36 AM EST | River Flood Warning | RNK | 3 days |
| Feb 6, 11:01 AM EST | Tornado Watch | SPC | 2 hr |
| Feb 6, 11:48 AM EST | Flash Flood Warning | RNK | 5 hr |
| Feb 6, 3:37 PM EST | Areal Flood Warning | RNK | 6 hr |
| Feb 6, 5:08 PM EST | Areal Flood Warning | RNK | 9 hr |
| Feb 6, 9:28 PM EST | Areal Flood Warning | RNK | 6 hr |
| Feb 6, 9:40 PM EST | Wind Advisory | RNK | 20 hr |
| Feb 6, 10:17 PM EST | River Flood Warning | RNK | 22 hr |
| Feb 7, 12:51 AM EST | Areal Flood Warning | RNK | 12 hr |
| Feb 7, 3:26 AM EST | Areal Flood Warning | RNK | 12 hr |
| Feb 7, 6:11 AM EST | Special Weather Statement | RNK | 49 min |
| Feb 19, 3:00 PM EST | Winter Weather Advisory | RNK | 31 hr |
| Feb 26, 3:36 AM EST | Dense Fog Advisory | RNK | 5 hr |
| Feb 26, 2:49 PM EST | Mesoscale Discussion | SPC | 116 min |
| Feb 26, 8:08 PM EST | Special Weather Statement | RNK | 37 min |
| Mar 29, 5:16 PM EDT | Special Weather Statement | RNK | 29 min |
| Mar 29, 6:05 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Apr 6, 1:47 PM EDT | Special Weather Statement | RNK | 88 min |
| Apr 6, 1:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 7, 2:07 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Apr 8, 1:10 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 8, 4:05 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Apr 8, 4:55 PM EDT | Severe Thunderstorm Warning | RNK | 48 min |
| Apr 8, 5:30 PM EDT | Severe Thunderstorm Warning | RNK | 46 min |
| Apr 8, 5:59 PM EDT | Severe Thunderstorm Warning | RNK | 46 min |
| Apr 8, 6:01 PM EDT | Special Weather Statement | RNK | 29 min |
| Apr 8, 6:01 PM EDT | Severe Thunderstorm Warning | RNK | 59 min |
| Apr 8, 6:14 PM EDT | Severe Thunderstorm Warning | RNK | 31 min |
| Apr 8, 6:43 PM EDT | Severe Thunderstorm Warning | RNK | 32 min |
| Apr 9, 4:56 AM EDT | Special Weather Statement | RNK | 64 min |
| Apr 10, 2:31 PM EDT | Freeze Warning | RNK | 18 hr |
| Apr 12, 2:18 PM EDT | Wind Advisory | RNK | 26 hr |
| Apr 13, 4:35 AM EDT | Severe Thunderstorm Warning | RNK | 55 min |
| Apr 13, 5:01 AM EDT | Tornado Warning | RNK | 29 min |
| Apr 13, 5:01 AM EDT | Tornado Watch | SPC | 7 hr |
| Apr 13, 5:19 AM EDT | Tornado Warning | RNK | 26 min |
| Apr 13, 5:30 AM EDT | Severe Thunderstorm Warning | RNK | 60 min |
| Apr 13, 5:36 AM EDT | Tornado Warning | RNK | 24 min |
| Apr 13, 5:56 AM EDT | Tornado Warning | RNK | 34 min |
| Apr 13, 9:30 AM EDT | River Flood Warning | RNK | 24 hr |
| Apr 15, 3:37 AM EDT | Frost Advisory | RNK | 28 hr |
| Apr 16, 3:00 PM EDT | Frost Advisory | RNK | 18 hr |
| Apr 18, 2:37 PM EDT | Frost Advisory | RNK | 18 hr |
| Apr 30, 1:59 AM EDT | Special Weather Statement | RNK | 61 min |
| Apr 30, 3:03 AM EDT | Special Weather Statement | RNK | 27 min |
| Apr 30, 3:36 AM EDT | Special Weather Statement | RNK | 69 min |
| Apr 30, 6:33 AM EDT | Areal Flood Advisory | RNK | 4 hr |
| May 8, 1:52 PM EDT | Freeze Watch | RNK | 13 hr |
| May 9, 3:00 AM EDT | Freeze Warning | RNK | 31 hr |
| May 18, 2:23 PM EDT | Flash Flood Watch | RNK | 3 days |
| May 20, 10:59 AM EDT | River Flood Warning | RNK | 52 hr |
| May 20, 10:59 AM EDT | River Flood Warning | RNK | 4 days |
| May 20, 4:27 PM EDT | River Flood Warning | RNK | 4 days |
| May 21, 11:49 PM EDT | Areal Flood Advisory | RNK | 4 hr |
| May 22, 3:50 AM EDT | Dense Fog Advisory | RNK | 5 hr |
| May 23, 2:56 AM EDT | Dense Fog Advisory | RNK | 6 hr |
| May 24, 1:44 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 24, 8:01 PM EDT | Flash Flood Warning | RNK | 6 hr |
| May 27, 3:25 AM EDT | Flash Flood Watch | RNK | 23 hr |
| May 27, 5:39 PM EDT | Special Weather Statement | RNK | 36 min |
| May 27, 6:15 PM EDT | Special Weather Statement | RNK | 30 min |
| May 28, 7:41 PM EDT | Special Weather Statement | RNK | 49 min |
| Jun 4, 2:38 PM EDT | Severe Thunderstorm Warning | RNK | 39 min |
| Jun 5, 1:15 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 10, 6:03 PM EDT | Special Weather Statement | RNK | 42 min |
| Jun 17, 2:46 AM EDT | Special Weather Statement | RNK | 59 min |
| Jun 17, 7:11 AM EDT | Areal Flood Advisory | RNK | 75 min |
| Jun 17, 8:24 AM EDT | Areal Flood Warning | RNK | 6 hr |
| Jun 17, 8:39 AM EDT | Flash Flood Warning | RNK | 6 hr |
| Jun 17, 1:42 PM EDT | River Flood Warning | RNK | 22 hr |
| Jun 17, 2:20 PM EDT | Areal Flood Warning | RNK | 6 hr |
| Jun 17, 4:58 PM EDT | Special Weather Statement | RNK | 47 min |
| Jun 17, 5:11 PM EDT | Flash Flood Warning | RNK | 8 hr |
| Jun 20, 12:47 PM EDT | Flash Flood Watch | RNK | 8 hr |
| Jun 25, 5:05 PM EDT | Severe Thunderstorm Warning | RNK | 40 min |
| Jun 25, 5:48 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 25, 5:50 PM EDT | Special Weather Statement | RNK | 25 min |
| Jul 1, 12:55 PM EDT | Special Weather Statement | RNK | 35 min |
| Jul 1, 1:46 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jul 1, 8:49 PM EDT | Severe Thunderstorm Warning | RNK | 56 min |
| Jul 1, 10:27 PM EDT | Special Weather Statement | RNK | 48 min |
| Jul 2, 12:02 AM EDT | Special Weather Statement | RNK | 58 min |
| Jul 8, 6:50 PM EDT | Special Weather Statement | RNK | 25 min |
| Jul 10, 8:27 PM EDT | Severe Thunderstorm Warning | RNK | 63 min |
| Jul 17, 1:47 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jul 17, 4:30 PM EDT | Severe Thunderstorm Warning | RNK | 60 min |
| Jul 17, 4:49 PM EDT | Special Weather Statement | RNK | 26 min |
| Jul 17, 4:57 PM EDT | Severe Thunderstorm Warning | RNK | 41 min |
| Jul 18, 3:11 PM EDT | Heat Advisory | RNK | 30 hr |
| Jul 19, 3:04 PM EDT | Heat Advisory | RNK | 30 hr |
| Jul 19, 6:27 PM EDT | Severe Thunderstorm Warning | RNK | 42 min |
| Jul 20, 9:38 PM EDT | Heat Advisory | RNK | 22 hr |
| Jul 21, 1:00 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 21, 9:27 PM EDT | Severe Thunderstorm Warning | RNK | 51 min |
| Jul 22, 8:32 AM EDT | Heat Advisory | RNK | 10 hr |
| Jul 22, 4:11 PM EDT | Special Weather Statement | RNK | 49 min |
| Jul 22, 10:37 PM EDT | Special Weather Statement | RNK | 23 min |
| Jul 22, 11:08 PM EDT | Special Weather Statement | RNK | 37 min |
| Jul 23, 12:05 AM EDT | Special Weather Statement | RNK | 55 min |
| Jul 23, 1:03 AM EDT | Areal Flood Advisory | RNK | 117 min |
| Jul 23, 1:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 4:10 PM EDT | Severe Thunderstorm Warning | RNK | 39 min |
| Jul 24, 4:22 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jul 24, 7:25 PM EDT | Severe Thunderstorm Warning | RNK | 65 min |
| Jul 24, 8:34 PM EDT | Special Weather Statement | RNK | 56 min |
| Jul 28, 2:34 PM EDT | Special Weather Statement | RNK | 26 min |
| Jul 28, 2:48 PM EDT | Severe Thunderstorm Warning | RNK | 57 min |
| Jul 28, 3:19 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jul 28, 3:21 PM EDT | Severe Thunderstorm Warning | RNK | 54 min |
| Jul 31, 1:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jul 31, 7:15 PM EDT | Special Weather Statement | RNK | 30 min |
| Jul 31, 7:47 PM EDT | Special Weather Statement | RNK | 43 min |
| Jul 31, 9:14 PM EDT | Special Weather Statement | RNK | 31 min |
| Jul 31, 11:19 PM EDT | Areal Flood Advisory | RNK | 3 hr |
| Aug 2, 4:55 AM EDT | Flash Flood Watch | RNK | 50 hr |
| Aug 2, 2:18 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Aug 2, 11:52 PM EDT | Special Weather Statement | RNK | 53 min |
| Aug 3, 12:35 AM EDT | Severe Thunderstorm Warning | RNK | 55 min |
| Aug 3, 12:53 AM EDT | Flash Flood Warning | RNK | 3 hr |
| Aug 3, 1:04 PM EDT | Special Weather Statement | RNK | 41 min |
| Aug 3, 1:18 PM EDT | Severe Thunderstorm Warning | RNK | 57 min |
| Aug 5, 10:02 PM EDT | Special Weather Statement | RNK | 28 min |
| Aug 6, 2:08 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 6, 6:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Aug 6, 8:47 PM EDT | Severe Thunderstorm Warning | RNK | 58 min |
| Aug 12, 1:15 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 14, 3:48 AM EDT | Flash Flood Watch | RNK | 41 hr |
| Aug 21, 12:04 PM EDT | Areal Flood Advisory | RNK | 3 hr |
| Aug 21, 1:41 PM EDT | Areal Flood Advisory | RNK | 2 hr |
| Aug 21, 11:47 PM EDT | Special Weather Statement | RNK | 43 min |
| Aug 22, 12:32 AM EDT | Areal Flood Advisory | RNK | 3 hr |
| Aug 24, 6:58 PM EDT | Special Weather Statement | RNK | 32 min |
| Aug 28, 7:50 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 30, 7:55 PM EDT | Flood Watch | RNK | 26 hr |
| Aug 31, 3:10 AM EDT | Flash Flood Watch | RNK | 21 hr |
| Aug 31, 12:16 PM EDT | Areal Flood Advisory | RNK | 4 hr |
| Aug 31, 1:05 PM EDT | Areal Flood Advisory | RNK | 107 min |
| Sep 2, 7:30 PM EDT | Special Weather Statement | RNK | 30 min |
| Sep 2, 7:36 PM EDT | Areal Flood Advisory | RNK | 2 hr |
| Sep 16, 4:56 AM EDT | Flood Watch | RNK | 44 hr |
| Sep 17, 5:19 PM EDT | Areal Flood Warning | RNK | 6 hr |
| Sep 17, 5:41 PM EDT | Areal Flood Warning | RNK | 3 hr |
| Sep 17, 6:56 PM EDT | Areal Flood Warning | RNK | 5 hr |
| Sep 18, 12:44 AM EDT | Areal Flood Advisory | RNK | 6 hr |
| Sep 29, 2:36 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 29, 3:26 PM EDT | Special Weather Statement | RNK | 34 min |
| Sep 29, 5:22 PM EDT | Severe Thunderstorm Warning | RNK | 38 min |
| Oct 11, 4:43 AM EDT | Areal Flood Advisory | RNK | 4 hr |
| Oct 13, 2:32 AM EDT | Dense Fog Advisory | RNK | 6 hr |
| Oct 17, 1:59 PM EDT | Frost Advisory | RNK | 19 hr |
| Oct 25, 2:29 AM EDT | Areal Flood Advisory | RNK | 6 hr |
| Oct 26, 8:53 PM EDT | Dense Fog Advisory | RNK | 13 hr |
| Oct 27, 9:51 PM EDT | Dense Fog Advisory | RNK | 12 hr |
| Oct 28, 2:09 PM EDT | Wind Advisory | RNK | 3 hr |
| Oct 28, 4:59 PM EDT | Tropical Storm Warning | RNK | 22 hr |
| Oct 29, 9:50 AM EDT | Severe Thunderstorm Warning | RNK | 85 min |
| Oct 29, 11:11 AM EDT | Severe Thunderstorm Warning | RNK | 64 min |
| Oct 29, 11:24 AM EDT | Areal Flood Warning | RNK | 6 hr |
| Oct 29, 6:27 PM EDT | Special Weather Statement | RNK | 33 min |
| Oct 29, 8:15 PM EDT | Areal Flood Advisory | RNK | 2 hr |
| Oct 30, 12:33 AM EDT | Areal Flood Advisory | RNK | 3 hr |
| Nov 1, 3:33 AM EST | Freeze Warning | RNK | 29 hr |
| Nov 2, 1:49 PM EST | Freeze Warning | RNK | 17 hr |
| Nov 10, 1:51 PM EST | Flood Watch | RNK | 48 hr |
| Nov 11, 9:36 AM EST | Areal Flood Advisory | RNK | 3 hr |
| Nov 11, 11:04 AM EST | Areal Flood Advisory | RNK | 3 hr |
| Nov 11, 4:28 PM EST | Areal Flood Advisory | RNK | 4 hr |
| Nov 11, 5:05 PM EST | Areal Flood Advisory | RNK | 4 hr |
| Nov 11, 5:19 PM EST | Flash Flood Warning | RNK | 6 hr |
| Nov 11, 6:45 PM EST | Flash Flood Warning | RNK | 6 hr |
| Nov 11, 7:23 PM EST | Flash Flood Warning | RNK | 6 hr |
| Nov 11, 8:02 PM EST | River Flood Warning | RNK | 36 hr |
| Nov 11, 8:04 PM EST | River Flood Warning | RNK | 3 days |
| Nov 12, 1:35 AM EST | Areal Flood Warning | RNK | 15 hr |
| Nov 12, 1:50 AM EST | River Flood Warning | RNK | 55 hr |
| Nov 12, 4:38 PM EST | Areal Flood Warning | RNK | 6 hr |
| Nov 12, 10:24 PM EST | Areal Flood Warning | RNK | 12 hr |
| Nov 26, 8:43 PM EST | Dense Fog Advisory | RNK | 12 hr |
| Nov 30, 8:50 AM EST | Special Weather Statement | RNK | 25 min |
| Nov 30, 3:56 PM EST | River Flood Warning | RNK | 29 hr |
| Dec 4, 10:11 PM EST | Special Weather Statement | RNK | 49 min |
| Dec 4, 11:25 PM EST | Special Weather Statement | RNK | 35 min |
| Dec 14, 8:36 AM EST | Special Weather Statement | RNK | 54 min |
| Dec 15, 4:35 AM EST | Winter Weather Advisory | RNK | 41 hr |
| Dec 17, 1:04 AM EST | Freezing Fog Advisory | RNK | 9 hr |
| Dec 23, 3:15 PM EST | Flash Flood Watch | RNK | 33 hr |
| Dec 24, 8:55 PM EST | Special Weather Statement | RNK | 80 min |
| Dec 24, 11:51 PM EST | Special Weather Statement | RNK | 84 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 | 31 |
| Tornado Warning | 4 |
| Severe Thunderstorm Watch | 2 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 22 |
| Special Weather Statement | 47 |
| Flooding | |
| Areal Flood Warning | 14 |
| Flash Flood Warning | 8 |
| River Flood Warning | 12 |
| Flash Flood Watch | 7 |
| Flood Watch | 4 |
| Areal Flood Advisory | 20 |
| Winter | |
| Winter Weather Advisory | 2 |
| Heat | |
| Heat Advisory | 4 |
| Cold | |
| Freeze Warning | 4 |
| Freeze Watch | 1 |
| Frost Advisory | 4 |
| Wind and dust | |
| Wind Advisory | 4 |
| Fog and smoke | |
| Dense Fog Advisory | 7 |
| Freezing Fog Advisory | 1 |
| Tropical | |
| Tropical Storm Warning | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20192021
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.