Alert archive / Virginia / King William County
Weather alerts in King William County, Virginia, 2019
128 weather alerts in 2019, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
King William County and its neighbors
Each county as a circle sized by its count in 2019. Tap one for its archive.
- Alerts
- 128
- Warnings
- 29
- Watches
- 15
- Advisories
- 18
- Busiest month
- August28 alerts
- Busiest day
- April 15, 20198 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 King William County in 2019 had a tornado report inside them.
King William County, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 4 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 18 | 17 | 6% | 4 | 75% | 12 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Wakefield, VA: tornado warnings | 59 | 15 | 75% | 28 | 82% | 13 min |
| NWS Wakefield, VA: severe thunderstorm warnings | 327 | 237 | 28% | 509 | 86% | 20 min |
| NWS Wakefield, VA: flash flood warnings | 18 | 13 | 28% | 33 | 82% | 92 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, 3:36 AM EST | Winter Storm Watch | AKQ | 24 hr |
| Jan 11, 9:59 PM EST | Winter Storm Warning | AKQ | 51 hr |
| Jan 12, 3:46 AM EST | Winter Weather Advisory | AKQ | 48 hr |
| Jan 20, 3:29 AM EST | Wind Chill Advisory | AKQ | 32 hr |
| Jan 30, 3:42 AM EST | Wind Chill Advisory | AKQ | 29 hr |
| Jan 30, 3:46 AM EST | Wind Advisory | AKQ | 14 hr |
| Feb 7, 8:29 PM EST | Dense Fog Advisory | AKQ | 8 hr |
| Feb 19, 3:36 AM EST | Winter Weather Advisory | AKQ | 42 hr |
| Feb 24, 4:46 PM EST | Areal Flood Warning | AKQ | 3 days |
| Feb 27, 10:12 PM EST | Areal Flood Warning | AKQ | 30 hr |
| Mar 1, 4:16 AM EST | Areal Flood Warning | AKQ | 12 hr |
| Mar 19, 10:03 AM EDT | Special Weather Statement | AKQ | 12 min |
| Mar 21, 1:18 PM EDT | Special Weather Statement | AKQ | 42 min |
| Mar 22, 5:54 PM EDT | Special Weather Statement | AKQ | 36 min |
| Apr 8, 2:32 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 8, 6:24 PM EDT | Severe Thunderstorm Warning | AKQ | 30 min |
| Apr 8, 7:01 PM EDT | Special Weather Statement | AKQ | 44 min |
| Apr 14, 5:49 PM EDT | Mesoscale Discussion | SPC | 26 min |
| Apr 15, 12:07 AM EDT | Mesoscale Discussion | SPC | 113 min |
| Apr 15, 12:41 AM EDT | Tornado Watch | SPC | 5 hr |
| Apr 15, 1:36 AM EDT | Tornado Warning | AKQ | 24 min |
| Apr 15, 1:50 AM EDT | Severe Thunderstorm Warning | AKQ | 40 min |
| Apr 15, 1:53 AM EDT | Tornado Warning | AKQ | 52 min |
| Apr 15, 2:16 AM EDT | Tornado Warning | AKQ | 29 min |
| Apr 15, 2:30 AM EDT | Mesoscale Discussion | SPC | 60 min |
| Apr 15, 2:32 AM EDT | Severe Thunderstorm Warning | AKQ | 43 min |
| Apr 19, 8:26 AM EDT | Flash Flood Watch | AKQ | 20 hr |
| Apr 19, 12:29 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 19, 1:12 PM EDT | Severe Thunderstorm Warning | AKQ | 48 min |
| Apr 19, 1:17 PM EDT | Tornado Watch | SPC | 11 hr |
| Apr 19, 1:35 PM EDT | Severe Thunderstorm Warning | AKQ | 40 min |
| Apr 19, 3:18 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Apr 19, 6:21 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Apr 19, 8:03 PM EDT | Tornado Warning | AKQ | 27 min |
| Apr 25, 2:38 AM EDT | Special Weather Statement | AKQ | 22 min |
| Apr 26, 10:41 AM EDT | Special Weather Statement | AKQ | 49 min |
| Apr 26, 11:37 AM EDT | Mesoscale Discussion | SPC | 113 min |
| Apr 26, 2:01 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 26, 3:09 PM EDT | Special Weather Statement | AKQ | 51 min |
| Apr 26, 3:12 PM EDT | Special Weather Statement | AKQ | 48 min |
| Apr 26, 3:24 PM EDT | Severe Thunderstorm Warning | AKQ | 33 min |
| May 23, 3:05 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 23, 3:42 PM EDT | Mesoscale Discussion | SPC | 93 min |
| May 26, 11:14 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| May 26, 1:45 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 26, 4:29 PM EDT | Special Weather Statement | AKQ | 31 min |
| May 26, 4:35 PM EDT | Severe Thunderstorm Warning | AKQ | 40 min |
| May 26, 5:45 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 29, 6:22 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jun 1, 2:18 PM EDT | Special Weather Statement | AKQ | 42 min |
| Jun 2, 3:33 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 2, 5:57 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Jun 2, 10:28 PM EDT | Special Weather Statement | AKQ | 32 min |
| Jun 5, 12:52 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jun 5, 2:33 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 5, 3:28 PM EDT | Special Weather Statement | AKQ | 47 min |
| Jun 5, 3:48 PM EDT | Severe Thunderstorm Warning | AKQ | 42 min |
| Jun 5, 4:35 PM EDT | Severe Thunderstorm Warning | AKQ | 40 min |
| Jun 5, 5:33 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jun 10, 3:07 PM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Jun 18, 12:23 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 18, 5:47 PM EDT | Severe Thunderstorm Warning | AKQ | 32 min |
| Jun 20, 12:23 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 20, 1:49 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 20, 4:47 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 24, 7:17 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 28, 5:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 4, 4:53 PM EDT | Special Weather Statement | AKQ | 52 min |
| Jul 6, 1:48 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 7, 6:37 PM EDT | Areal Flood Advisory | AKQ | 113 min |
| Jul 7, 7:48 PM EDT | Areal Flood Advisory | AKQ | 117 min |
| Jul 11, 12:51 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jul 11, 5:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 16, 2:46 PM EDT | Heat Advisory | AKQ | 52 hr |
| Jul 16, 3:28 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 17, 1:29 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 18, 1:49 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 18, 3:25 PM EDT | Excessive Heat Warning | AKQ | 3 days |
| Jul 18, 3:25 PM EDT | Heat Advisory | AKQ | 29 hr |
| Jul 18, 6:46 PM EDT | Special Weather Statement | AKQ | 44 min |
| Jul 19, 3:15 AM EDT | Excessive Heat Watch | AKQ | 12 hr |
| Jul 21, 3:08 PM EDT | Heat Advisory | AKQ | 28 hr |
| Jul 22, 2:17 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 31, 5:41 PM EDT | Special Weather Statement | AKQ | 64 min |
| Jul 31, 5:52 PM EDT | Special Weather Statement | AKQ | 38 min |
| Aug 2, 6:36 AM EDT | Special Weather Statement | AKQ | 54 min |
| Aug 5, 4:07 PM EDT | Special Weather Statement | AKQ | 38 min |
| Aug 7, 12:50 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Aug 7, 1:53 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 7, 2:28 PM EDT | Severe Thunderstorm Warning | AKQ | 47 min |
| Aug 7, 3:17 PM EDT | Severe Thunderstorm Warning | AKQ | 21 min |
| Aug 7, 3:25 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Aug 7, 3:43 PM EDT | Special Weather Statement | AKQ | 47 min |
| Aug 7, 4:32 PM EDT | Special Weather Statement | AKQ | 43 min |
| Aug 8, 12:20 AM EDT | Special Weather Statement | AKQ | 40 min |
| Aug 9, 2:25 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Aug 9, 3:05 PM EDT | Special Weather Statement | AKQ | 40 min |
| Aug 13, 9:14 PM EDT | Severe Thunderstorm Warning | AKQ | 46 min |
| Aug 13, 9:59 PM EDT | Special Weather Statement | AKQ | 46 min |
| Aug 15, 4:02 PM EDT | Special Weather Statement | AKQ | 43 min |
| Aug 20, 4:15 PM EDT | Special Weather Statement | AKQ | 45 min |
| Aug 20, 7:00 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 20, 8:55 PM EDT | Special Weather Statement | AKQ | 65 min |
| Aug 20, 9:22 PM EDT | Special Weather Statement | AKQ | 53 min |
| Aug 20, 10:20 PM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Aug 21, 8:04 PM EDT | Severe Thunderstorm Warning | AKQ | 41 min |
| Aug 21, 8:44 PM EDT | Special Weather Statement | AKQ | 61 min |
| Aug 22, 4:53 PM EDT | Severe Thunderstorm Warning | AKQ | 52 min |
| Aug 22, 5:49 PM EDT | Severe Thunderstorm Warning | AKQ | 56 min |
| Aug 22, 6:11 PM EDT | Severe Thunderstorm Warning | AKQ | 38 min |
| Aug 22, 6:42 PM EDT | Severe Thunderstorm Warning | AKQ | 48 min |
| Aug 23, 2:14 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 23, 3:24 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 3, 5:17 PM EDT | Tropical Storm Watch | AKQ | 42 hr |
| Sep 4, 5:39 PM EDT | Tropical Storm Warning | AKQ | 51 hr |
| Sep 11, 7:59 PM EDT | Special Weather Statement | AKQ | 31 min |
| Sep 12, 2:02 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Oct 16, 1:35 PM EDT | Special Weather Statement | AKQ | 55 min |
| Oct 20, 10:31 AM EDT | Special Weather Statement | AKQ | 44 min |
| Oct 23, 1:06 AM EDT | Dense Fog Advisory | AKQ | 4 hr |
| Oct 31, 3:16 PM EDT | Tornado Watch | SPC | 8 hr |
| Oct 31, 6:36 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Oct 31, 11:17 PM EDT | Special Weather Statement | AKQ | 58 min |
| Nov 1, 4:00 AM EDT | Frost Advisory | AKQ | 29 hr |
| Nov 3, 2:00 PM EST | Freeze Warning | AKQ | 19 hr |
| Dec 26, 5:23 AM EST | Dense Fog Advisory | AKQ | 4 hr |
| Dec 26, 9:06 AM EST | Dense Fog Advisory | AKQ | 114 min |
| Dec 27, 12:39 AM EST | Dense Fog Advisory | AKQ | 10 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 | 18 |
| Tornado Warning | 4 |
| Severe Thunderstorm Watch | 8 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 34 |
| Special Weather Statement | 32 |
| Flooding | |
| Areal Flood Warning | 3 |
| Flash Flood Watch | 1 |
| Areal Flood Advisory | 4 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 2 |
| Heat | |
| Excessive Heat Warning | 1 |
| Excessive Heat Watch | 1 |
| Heat Advisory | 3 |
| Cold | |
| Freeze Warning | 1 |
| Frost Advisory | 1 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 5 |
| 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 archive20182020
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.