Alert archive / Virginia / Dinwiddie County
Weather alerts in Dinwiddie County, Virginia, 2020
111 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Dinwiddie County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 111
- Warnings
- 14
- Watches
- 13
- Advisories
- 31
- Busiest month
- August29 alerts
- Busiest day
- August 6, 20206 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Dinwiddie County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 7 | 5 | 29% | 0 | ||
| Flash flood warnings | 2 | 2 | 0% | 0 |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Wakefield, VA: tornado warnings | 60 | 19 | 68% | 39 | 72% | 17 min |
| NWS Wakefield, VA: severe thunderstorm warnings | 170 | 120 | 29% | 237 | 91% | 19 min |
| NWS Wakefield, VA: flash flood warnings | 87 | 57 | 34% | 118 | 92% | 79 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 11, 10:59 PM EST | Mesoscale Discussion | SPC | 91 min |
| Jan 11, 11:25 PM EST | Severe Thunderstorm Watch | SPC | 4 hr |
| Jan 12, 12:34 AM EST | Severe Thunderstorm Warning | AKQ | 41 min |
| Jan 12, 12:43 AM EST | Severe Thunderstorm Warning | AKQ | 36 min |
| Jan 12, 1:18 AM EST | Severe Thunderstorm Warning | AKQ | 27 min |
| Feb 5, 3:45 PM EST | Flood Watch | AKQ | 37 hr |
| Feb 6, 2:11 PM EST | Special Weather Statement | AKQ | 49 min |
| Feb 6, 2:42 PM EST | Wind Advisory | AKQ | 27 hr |
| Feb 6, 2:57 PM EST | Areal Flood Advisory | AKQ | 3 hr |
| Feb 7, 7:46 AM EST | Special Weather Statement | AKQ | 44 min |
| Feb 8, 3:58 AM EST | River Flood Warning | AKQ | 24 hr |
| Feb 19, 8:25 PM EST | Winter Weather Advisory | AKQ | 35 hr |
| Feb 26, 1:08 AM EST | Dense Fog Advisory | AKQ | 12 hr |
| Feb 26, 8:44 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Mar 29, 6:05 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Apr 6, 1:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 7, 2:07 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Apr 12, 2:25 PM EDT | Wind Advisory | AKQ | 26 hr |
| Apr 13, 4:40 AM EDT | Mesoscale Discussion | SPC | 95 min |
| Apr 13, 5:01 AM EDT | Tornado Watch | SPC | 7 hr |
| Apr 13, 6:46 AM EDT | Mesoscale Discussion | SPC | 89 min |
| Apr 13, 8:53 AM EDT | Severe Thunderstorm Warning | AKQ | 37 min |
| Apr 15, 3:36 PM EDT | Frost Advisory | AKQ | 16 hr |
| Apr 16, 3:12 PM EDT | Frost Advisory | AKQ | 18 hr |
| Apr 18, 9:31 PM EDT | Frost Advisory | AKQ | 10 hr |
| Apr 24, 3:25 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Apr 29, 3:23 AM EDT | Flood Watch | AKQ | 39 hr |
| Apr 30, 7:47 AM EDT | Special Weather Statement | AKQ | 58 min |
| Apr 30, 8:41 AM EDT | Special Weather Statement | AKQ | 64 min |
| Apr 30, 1:49 PM EDT | Areal Flood Advisory | AKQ | 3 hr |
| May 8, 3:33 AM EDT | Freeze Watch | AKQ | 24 hr |
| May 9, 3:26 AM EDT | Freeze Warning | AKQ | 29 hr |
| May 30, 2:25 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 6, 1:00 AM EDT | Special Weather Statement | AKQ | 45 min |
| Jun 17, 10:33 PM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Jun 17, 11:41 PM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Jun 20, 5:22 PM EDT | Special Weather Statement | AKQ | 38 min |
| Jun 22, 1:58 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 25, 6:09 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jun 25, 9:31 PM EDT | Severe Thunderstorm Warning | AKQ | 44 min |
| Jun 25, 10:07 PM EDT | Special Weather Statement | AKQ | 38 min |
| Jun 25, 10:31 PM EDT | Special Weather Statement | AKQ | 44 min |
| Jun 25, 10:36 PM EDT | Severe Thunderstorm Warning | AKQ | 39 min |
| Jun 25, 10:43 PM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Jul 1, 1:46 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jul 13, 6:18 AM EDT | Special Weather Statement | AKQ | 42 min |
| Jul 17, 1:47 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jul 17, 4:12 PM EDT | Special Weather Statement | AKQ | 48 min |
| Jul 17, 4:16 PM EDT | Severe Thunderstorm Warning | AKQ | 12 min |
| Jul 18, 3:09 PM EDT | Heat Advisory | AKQ | 30 hr |
| Jul 19, 2:40 PM EDT | Heat Advisory | AKQ | 30 hr |
| Jul 20, 8:46 PM EDT | Heat Advisory | AKQ | 70 hr |
| Jul 21, 9:39 PM EDT | Special Weather Statement | AKQ | 51 min |
| Jul 24, 4:22 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jul 26, 3:32 PM EDT | Heat Advisory | AKQ | 52 hr |
| Jul 28, 3:19 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jul 29, 12:56 PM EDT | Special Weather Statement | AKQ | 49 min |
| Jul 31, 1:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Aug 2, 3:26 PM EDT | Flash Flood Watch | AKQ | 43 hr |
| Aug 2, 5:44 PM EDT | Tropical Storm Watch | AKQ | 5 hr |
| Aug 2, 10:51 PM EDT | Tropical Storm Warning | AKQ | 43 hr |
| Aug 3, 12:09 PM EDT | Special Weather Statement | AKQ | 51 min |
| Aug 3, 12:55 PM EDT | Special Weather Statement | AKQ | 50 min |
| Aug 3, 6:14 PM EDT | Special Weather Statement | AKQ | 46 min |
| Aug 4, 12:02 AM EDT | Mesoscale Discussion | SPC | 118 min |
| Aug 4, 4:22 AM EDT | Flash Flood Warning | AKQ | 5 hr |
| Aug 5, 6:11 PM EDT | Special Weather Statement | AKQ | 49 min |
| Aug 5, 6:58 PM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Aug 5, 7:32 PM EDT | Special Weather Statement | AKQ | 43 min |
| Aug 6, 5:45 AM EDT | Special Weather Statement | AKQ | 45 min |
| Aug 6, 6:28 AM EDT | Special Weather Statement | AKQ | 47 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, 6:20 PM EDT | Special Weather Statement | AKQ | 40 min |
| Aug 6, 6:51 PM EDT | Special Weather Statement | AKQ | 39 min |
| Aug 6, 9:32 PM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Aug 8, 6:11 PM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Aug 10, 6:48 PM EDT | Areal Flood Advisory | AKQ | 117 min |
| Aug 13, 2:25 AM EDT | Flash Flood Watch | AKQ | 17 hr |
| Aug 15, 3:21 AM EDT | Flash Flood Watch | AKQ | 33 hr |
| Aug 15, 10:05 AM EDT | Flash Flood Warning | AKQ | 3 hr |
| Aug 19, 3:16 PM EDT | Special Weather Statement | AKQ | 59 min |
| Aug 19, 3:55 PM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Aug 25, 7:07 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Aug 25, 8:50 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Aug 28, 7:50 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 29, 12:08 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 2, 7:09 PM EDT | Heat Advisory | AKQ | 25 hr |
| Sep 2, 8:00 PM EDT | Special Weather Statement | AKQ | 30 min |
| Sep 9, 2:26 PM EDT | Flash Flood Watch | AKQ | 31 hr |
| Sep 10, 5:35 PM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Sep 10, 6:04 PM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Sep 16, 3:51 AM EDT | Flash Flood Watch | AKQ | 50 hr |
| Sep 17, 9:30 PM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Sep 29, 2:36 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 29, 8:32 PM EDT | Special Weather Statement | AKQ | 43 min |
| Oct 21, 12:37 AM EDT | Dense Fog Advisory | AKQ | 9 hr |
| Oct 27, 1:30 AM EDT | Dense Fog Advisory | AKQ | 10 hr |
| Oct 27, 9:55 PM EDT | Dense Fog Advisory | AKQ | 9 hr |
| Oct 28, 3:27 PM EDT | Wind Advisory | AKQ | 28 hr |
| Oct 29, 10:45 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Oct 30, 12:16 AM EDT | Special Weather Statement | AKQ | 59 min |
| Nov 2, 1:43 PM EST | Freeze Warning | AKQ | 18 hr |
| Nov 6, 1:29 AM EST | Dense Fog Advisory | AKQ | 9 hr |
| Nov 11, 10:30 AM EST | Flash Flood Watch | AKQ | 31 hr |
| Nov 16, 3:01 PM EST | River Flood Warning | AKQ | 59 hr |
| Nov 26, 8:42 PM EST | Dense Fog Advisory | AKQ | 12 hr |
| Nov 30, 12:26 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Dec 23, 2:36 PM EST | Flash Flood Watch | AKQ | 33 hr |
| Dec 24, 3:08 PM EST | Special Weather Statement | AKQ | 37 min |
| Dec 24, 9:43 PM EST | Special Weather Statement | AKQ | 32 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 | 7 |
| Severe Thunderstorm Watch | 1 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 26 |
| Special Weather Statement | 27 |
| Flooding | |
| Flash Flood Warning | 2 |
| River Flood Warning | 2 |
| Flash Flood Watch | 7 |
| Flood Watch | 2 |
| Areal Flood Advisory | 13 |
| Winter | |
| Winter Weather Advisory | 1 |
| Heat | |
| Heat Advisory | 5 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 1 |
| Frost Advisory | 3 |
| Wind and dust | |
| Wind Advisory | 3 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
| Tropical | |
| Tropical Storm Warning | 1 |
| Tropical Storm Watch | 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.