Alert archive / Virginia / York County
Weather alerts in York County, Virginia, 2020
168 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
York County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 168
- Warnings
- 30
- Watches
- 17
- Advisories
- 53
- Busiest month
- August43 alerts
- Busiest day
- August 15, 202012 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
2 of 3 tornado warnings covering York County in 2020 had a tornado report inside them.
York County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 2 | 33% | 0 | ||
| Severe thunderstorm warnings | 6 | 5 | 17% | 0 | ||
| Flash flood warnings | 12 | 9 | 25% | 5 | 100% | 40 min |
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 3, 8:02 PM EST | Special Weather Statement | AKQ | 58 min |
| Feb 5, 3:45 PM EST | Flood Watch | AKQ | 37 hr |
| Feb 6, 11:55 AM EST | Mesoscale Discussion | SPC | 65 min |
| Feb 6, 12:41 PM EST | Tornado Watch | SPC | 6 hr |
| Feb 6, 1:15 PM EST | Special Weather Statement | AKQ | 30 min |
| Feb 6, 2:42 PM EST | Wind Advisory | AKQ | 27 hr |
| Feb 6, 3:00 PM EST | Special Weather Statement | AKQ | 45 min |
| Feb 6, 3:26 PM EST | Severe Thunderstorm Warning | AKQ | 49 min |
| Feb 7, 8:36 AM EST | Special Weather Statement | AKQ | 39 min |
| Feb 7, 9:07 AM EST | Severe Thunderstorm Warning | AKQ | 38 min |
| Feb 19, 2:42 PM EST | Winter Storm Watch | AKQ | 13 hr |
| Feb 20, 3:36 AM EST | Winter Storm Warning | AKQ | 27 hr |
| Feb 26, 1:08 AM EST | Dense Fog Advisory | AKQ | 12 hr |
| Feb 26, 8:44 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Feb 26, 10:55 PM EST | Special Weather Statement | AKQ | 65 min |
| Feb 26, 11:40 PM EST | Special Weather Statement | AKQ | 65 min |
| Feb 26, 11:47 PM EST | Special Weather Statement | AKQ | 58 min |
| Mar 25, 3:30 PM EDT | Coastal Flood Advisory | AKQ | 10 hr |
| Mar 29, 6:05 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Mar 31, 5:05 AM EDT | Coastal Flood Advisory | AKQ | 53 hr |
| Apr 3, 2:37 PM EDT | Coastal Flood Advisory | AKQ | 33 hr |
| Apr 5, 3:30 AM EDT | Coastal Flood Advisory | AKQ | 11 hr |
| Apr 8, 4:30 PM EDT | Coastal Flood Statement | AKQ | 10 hr |
| Apr 9, 3:52 PM EDT | Coastal Flood Statement | AKQ | 14 hr |
| 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 15, 12:18 AM EDT | Special Weather Statement | AKQ | 42 min |
| Apr 16, 3:12 PM EDT | Frost Advisory | AKQ | 18 hr |
| Apr 21, 2:43 PM EDT | Special Weather Statement | AKQ | 62 min |
| Apr 24, 3:25 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Apr 29, 3:23 AM EDT | Flood Watch | AKQ | 39 hr |
| Apr 30, 1:26 PM EDT | Special Weather Statement | AKQ | 64 min |
| Apr 30, 2:28 PM EDT | Special Weather Statement | AKQ | 62 min |
| Apr 30, 3:39 PM EDT | Areal Flood Advisory | AKQ | 3 hr |
| May 6, 3:59 PM EDT | Coastal Flood Statement | AKQ | 9 hr |
| May 8, 11:39 PM EDT | Special Weather Statement | AKQ | 51 min |
| May 18, 6:27 AM EDT | Coastal Flood Watch | AKQ | 29 hr |
| May 19, 6:00 AM EDT | Coastal Flood Warning | AKQ | 46 hr |
| May 21, 3:58 AM EDT | Coastal Flood Statement | AKQ | 12 hr |
| May 29, 2:44 PM EDT | Special Weather Statement | AKQ | 31 min |
| May 29, 3:43 PM EDT | Areal Flood Advisory | AKQ | 2 hr |
| May 29, 4:13 PM EDT | Flash Flood Warning | AKQ | 111 min |
| Jun 6, 10:30 PM EDT | Special Weather Statement | AKQ | 45 min |
| Jun 6, 11:09 PM EDT | Special Weather Statement | AKQ | 36 min |
| Jun 6, 11:56 PM EDT | Special Weather Statement | AKQ | 49 min |
| Jun 12, 4:15 AM EDT | Special Weather Statement | AKQ | 30 min |
| Jun 12, 4:54 AM EDT | Areal Flood Advisory | AKQ | 2 hr |
| Jun 15, 9:06 PM EDT | Coastal Flood Statement | AKQ | 16 hr |
| Jun 16, 3:35 PM EDT | Coastal Flood Statement | AKQ | 8 hr |
| Jun 19, 3:19 PM EDT | Special Weather Statement | AKQ | 56 min |
| Jun 20, 1:55 PM EDT | Areal Flood Advisory | AKQ | 2 hr |
| Jun 20, 2:50 PM EDT | Areal Flood Advisory | AKQ | 115 min |
| Jun 22, 4:18 PM EDT | Severe Thunderstorm Warning | AKQ | 27 min |
| Jun 25, 6:09 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jun 30, 2:49 PM EDT | Special Weather Statement | AKQ | 41 min |
| Jul 1, 1:46 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jul 1, 3:52 PM EDT | Special Weather Statement | AKQ | 38 min |
| Jul 1, 4:30 PM EDT | Special Weather Statement | AKQ | 45 min |
| Jul 13, 8:25 AM EDT | Special Weather Statement | AKQ | 50 min |
| Jul 17, 6:04 PM EDT | Special Weather Statement | AKQ | 41 min |
| Jul 18, 3:09 PM EDT | Heat Advisory | AKQ | 30 hr |
| Jul 19, 2:40 PM EDT | Excessive Heat Warning | AKQ | 30 hr |
| Jul 20, 8:46 PM EDT | Heat Advisory | AKQ | 70 hr |
| Jul 21, 11:29 PM EDT | Special Weather Statement | AKQ | 46 min |
| Jul 21, 11:45 PM EDT | Areal Flood Advisory | AKQ | 12 min |
| Jul 21, 11:57 PM EDT | Flash Flood Warning | AKQ | 3 hr |
| Jul 22, 10:48 AM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 24, 4:22 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jul 24, 11:24 PM EDT | Areal Flood Advisory | AKQ | 2 hr |
| Jul 26, 3:32 PM EDT | Heat Advisory | AKQ | 52 hr |
| Jul 31, 1:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jul 31, 6:49 PM EDT | Special Weather Statement | AKQ | 41 min |
| Aug 1, 6:42 PM EDT | Special Weather Statement | AKQ | 48 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, 12:42 PM EDT | Special Weather Statement | AKQ | 33 min |
| Aug 3, 1:27 PM EDT | Special Weather Statement | AKQ | 48 min |
| Aug 3, 8:49 PM EDT | Tornado Watch | SPC | 9 hr |
| Aug 4, 12:02 AM EDT | Mesoscale Discussion | SPC | 118 min |
| Aug 4, 1:24 AM EDT | Tornado Warning | AKQ | 36 min |
| Aug 4, 1:29 AM EDT | Flash Flood Warning | AKQ | 5 hr |
| Aug 4, 1:41 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 4, 4:29 AM EDT | Tornado Warning | AKQ | 31 min |
| Aug 4, 4:57 AM EDT | Tornado Warning | AKQ | 33 min |
| Aug 4, 5:15 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 6, 10:43 AM EDT | Flash Flood Watch | AKQ | 15 hr |
| Aug 6, 4:02 PM EDT | Special Weather Statement | AKQ | 43 min |
| Aug 7, 2:43 AM EDT | Flash Flood Watch | AKQ | 19 hr |
| Aug 12, 8:08 PM EDT | Areal Flood Advisory | AKQ | 2 hr |
| Aug 13, 2:25 AM EDT | Flash Flood Watch | AKQ | 17 hr |
| Aug 13, 5:20 PM EDT | Areal Flood Advisory | AKQ | 115 min |
| Aug 14, 10:23 AM EDT | Areal Flood Advisory | AKQ | 118 min |
| Aug 14, 5:57 PM EDT | Areal Flood Advisory | AKQ | 2 hr |
| Aug 14, 6:12 PM EDT | Flash Flood Warning | AKQ | 2 hr |
| Aug 14, 9:07 PM EDT | Areal Flood Advisory | AKQ | 113 min |
| Aug 15, 3:21 AM EDT | Flash Flood Watch | AKQ | 33 hr |
| Aug 15, 6:20 AM EDT | Areal Flood Advisory | AKQ | 115 min |
| Aug 15, 7:22 AM EDT | Flash Flood Warning | AKQ | 2 hr |
| Aug 15, 8:20 AM EDT | Areal Flood Advisory | AKQ | 115 min |
| Aug 15, 9:45 AM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Aug 15, 12:44 PM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Aug 15, 1:26 PM EDT | Flash Flood Warning | AKQ | 3 hr |
| Aug 15, 3:51 PM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Aug 15, 4:31 PM EDT | Flash Flood Warning | AKQ | 3 hr |
| Aug 15, 5:12 PM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Aug 15, 7:22 PM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Aug 15, 10:35 PM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Aug 16, 2:58 PM EDT | Coastal Flood Statement | AKQ | 14 hr |
| Aug 25, 7:07 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Aug 27, 9:50 PM EDT | Severe Thunderstorm Warning | AKQ | 40 min |
| Aug 27, 10:31 PM EDT | Special Weather Statement | AKQ | 29 min |
| Aug 27, 10:39 PM EDT | Areal Flood Advisory | AKQ | 96 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 3, 3:06 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Sep 9, 7:44 AM EDT | Areal Flood Advisory | AKQ | 4 hr |
| Sep 9, 8:31 AM EDT | Areal Flood Advisory | AKQ | 119 min |
| Sep 9, 11:09 AM EDT | Flash Flood Warning | AKQ | 3 hr |
| Sep 9, 2:07 PM EDT | Areal Flood Advisory | AKQ | 113 min |
| Sep 9, 2:26 PM EDT | Flash Flood Watch | AKQ | 31 hr |
| Sep 10, 7:32 PM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Sep 11, 6:21 PM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Sep 16, 3:51 AM EDT | Flash Flood Watch | AKQ | 50 hr |
| Sep 17, 3:52 PM EDT | Coastal Flood Watch | AKQ | 62 hr |
| Sep 17, 3:52 PM EDT | Coastal Flood Advisory | AKQ | 5 days |
| Sep 18, 2:04 AM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Sep 18, 3:17 AM EDT | Flash Flood Warning | AKQ | 3 hr |
| Sep 18, 6:07 AM EDT | Areal Flood Warning | AKQ | 12 hr |
| Sep 18, 3:43 PM EDT | Coastal Flood Warning | AKQ | 69 hr |
| Sep 20, 5:32 AM EDT | Coastal Flood Warning | AKQ | 37 hr |
| Sep 20, 5:32 AM EDT | Coastal Flood Advisory | AKQ | 35 hr |
| Sep 22, 5:17 AM EDT | Coastal Flood Statement | AKQ | 13 hr |
| Sep 23, 5:12 AM EDT | Coastal Flood Statement | AKQ | 13 hr |
| Sep 29, 1:54 PM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Sep 29, 9:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Sep 29, 10:36 PM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Sep 29, 10:54 PM EDT | Flash Flood Warning | AKQ | 3 hr |
| Sep 29, 11:25 PM EDT | Special Weather Statement | AKQ | 95 min |
| Oct 18, 3:04 AM EDT | Coastal Flood Statement | AKQ | 16 hr |
| Oct 19, 3:20 AM EDT | Coastal Flood Statement | AKQ | 17 hr |
| 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 28, 3:27 PM EDT | Wind Advisory | AKQ | 28 hr |
| Oct 31, 6:31 AM EDT | Coastal Flood Advisory | AKQ | 8 hr |
| Nov 1, 11:36 AM EST | Mesoscale Discussion | SPC | 114 min |
| Nov 1, 12:03 PM EST | Special Weather Statement | AKQ | 57 min |
| Nov 6, 1:29 AM EST | Dense Fog Advisory | AKQ | 9 hr |
| Nov 6, 11:37 PM EST | Dense Fog Advisory | AKQ | 10 hr |
| Nov 11, 10:30 AM EST | Flash Flood Watch | AKQ | 31 hr |
| Nov 12, 7:24 AM EST | Areal Flood Advisory | AKQ | 3 hr |
| Nov 12, 7:54 AM EST | Flash Flood Warning | AKQ | 3 hr |
| Nov 12, 10:52 AM EST | Areal Flood Warning | AKQ | 30 hr |
| Nov 14, 8:39 AM EST | Coastal Flood Statement | AKQ | 4 hr |
| Nov 18, 6:40 AM EST | Freeze Warning | AKQ | 25 hr |
| Nov 30, 12:26 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Nov 30, 3:11 PM EST | Special Weather Statement | AKQ | 49 min |
| Dec 23, 2:48 PM EST | Wind Advisory | AKQ | 35 hr |
| Dec 24, 4:45 PM EST | Mesoscale Discussion | SPC | 60 min |
| Dec 24, 6:42 PM EST | Areal Flood Advisory | AKQ | 66 min |
| Dec 24, 7:48 PM EST | Flash Flood Warning | AKQ | 117 min |
| Dec 24, 8:09 PM EST | Areal Flood Advisory | AKQ | 2 hr |
| Dec 24, 10:46 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Dec 24, 11:30 PM EST | Severe Thunderstorm Warning | AKQ | 30 min |
| Dec 24, 11:58 PM EST | Severe Thunderstorm Warning | 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 | 6 |
| Tornado Warning | 3 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 23 |
| Special Weather Statement | 33 |
| Flooding | |
| Areal Flood Warning | 2 |
| Flash Flood Warning | 12 |
| Flash Flood Watch | 8 |
| Flood Watch | 2 |
| Areal Flood Advisory | 32 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Heat | |
| Excessive Heat Warning | 1 |
| Heat Advisory | 4 |
| Cold | |
| Freeze Warning | 1 |
| Frost Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 4 |
| Fog and smoke | |
| Dense Fog Advisory | 5 |
| Tropical | |
| Tropical Storm Warning | 1 |
| Tropical Storm Watch | 1 |
| Coast and beach | |
| Coastal Flood Warning | 3 |
| Coastal Flood Watch | 2 |
| Coastal Flood Advisory | 7 |
| Coastal Flood Statement | 12 |
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.