Alert archive / Virginia / Northumberland County
Weather alerts in Northumberland County, Virginia, 2018
177 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Northumberland County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 177
- Warnings
- 30
- Watches
- 20
- Advisories
- 52
- Busiest month
- June30 alerts
- Busiest day
- October 10, 20186 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Northumberland County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 9 | 6 | 33% | 1 | 100% | 27 min |
| Flash flood warnings | 4 | 3 | 25% | 0 |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Wakefield, VA: tornado warnings | 47 | 15 | 68% | 28 | 86% | 17 min |
| NWS Wakefield, VA: severe thunderstorm warnings | 122 | 85 | 30% | 212 | 77% | 22 min |
| NWS Wakefield, VA: flash flood warnings | 37 | 25 | 32% | 65 | 88% | 97 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 2, 3:12 AM EST | Winter Storm Watch | AKQ | 24 hr |
| Jan 2, 9:44 PM EST | Winter Storm Warning | AKQ | 44 hr |
| Jan 3, 9:04 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 4, 12:48 PM EST | Winter Weather Advisory | AKQ | 5 hr |
| Jan 4, 2:30 PM EST | Wind Chill Advisory | AKQ | 20 hr |
| Jan 5, 4:20 AM EST | Wind Chill Advisory | AKQ | 33 hr |
| Jan 16, 3:26 AM EST | Winter Weather Advisory | AKQ | 49 hr |
| Feb 4, 4:54 PM EST | Special Weather Statement | AKQ | 66 min |
| Feb 4, 6:00 PM EST | Special Weather Statement | AKQ | 45 min |
| Feb 11, 3:26 PM EST | Severe Thunderstorm Warning | AKQ | 49 min |
| Feb 11, 3:52 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Feb 11, 4:13 PM EST | Special Weather Statement | AKQ | 47 min |
| Feb 25, 5:44 AM EST | Dense Fog Advisory | AKQ | 4 hr |
| Feb 28, 2:45 PM EST | High Wind Watch | AKQ | 21 hr |
| Mar 1, 11:28 AM EST | High Wind Warning | AKQ | 40 hr |
| Mar 6, 8:13 AM EST | Coastal Flood Advisory | AKQ | 33 hr |
| Mar 7, 12:27 AM EST | Coastal Flood Warning | AKQ | 17 hr |
| Mar 7, 9:46 AM EST | Coastal Flood Warning | AKQ | 8 hr |
| Mar 7, 5:27 PM EST | Coastal Flood Advisory | AKQ | 2 hr |
| Mar 19, 3:29 PM EDT | Winter Storm Watch | AKQ | 24 hr |
| Mar 20, 10:00 AM EDT | Special Weather Statement | AKQ | 15 min |
| Mar 20, 3:38 PM EDT | Winter Storm Warning | AKQ | 32 hr |
| Mar 21, 10:16 AM EDT | Coastal Flood Statement | AKQ | 21 hr |
| Apr 4, 1:27 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 11, 3:46 PM EDT | Fire Weather Watch | AKQ | 28 hr |
| Apr 12, 2:00 AM EDT | Red Flag Warning | AKQ | 18 hr |
| Apr 16, 3:15 AM EDT | Special Weather Statement | AKQ | 45 min |
| Apr 16, 4:45 AM EDT | Coastal Flood Advisory | AKQ | 25 hr |
| Apr 17, 5:06 PM EDT | Fire Weather Watch | AKQ | 22 hr |
| May 10, 12:36 PM EDT | Mesoscale Discussion | SPC | 114 min |
| May 10, 1:14 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 10, 4:53 PM EDT | Mesoscale Discussion | SPC | 67 min |
| May 10, 4:55 PM EDT | Severe Thunderstorm Warning | AKQ | 40 min |
| May 10, 5:43 PM EDT | Severe Thunderstorm Warning | AKQ | 47 min |
| May 14, 5:37 PM EDT | Mesoscale Discussion | SPC | 53 min |
| May 14, 6:11 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 14, 7:22 PM EDT | Mesoscale Discussion | SPC | 53 min |
| May 14, 7:43 PM EDT | Severe Thunderstorm Warning | AKQ | 47 min |
| May 14, 7:47 PM EDT | Severe Thunderstorm Warning | AKQ | 43 min |
| May 14, 8:33 PM EDT | Special Weather Statement | AKQ | 42 min |
| May 17, 2:32 PM EDT | Flood Watch | AKQ | 51 hr |
| May 18, 11:54 AM EDT | Areal Flood Advisory | AKQ | 111 min |
| May 18, 1:42 PM EDT | Areal Flood Advisory | AKQ | 45 min |
| May 18, 2:21 PM EDT | Areal Flood Advisory | AKQ | 3 hr |
| May 18, 7:08 PM EDT | Areal Flood Warning | AKQ | 3 hr |
| May 19, 1:39 PM EDT | Areal Flood Warning | AKQ | 3 hr |
| May 19, 6:56 PM EDT | Coastal Flood Advisory | AKQ | 15 hr |
| May 22, 1:52 PM EDT | Mesoscale Discussion | SPC | 113 min |
| May 22, 2:33 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 22, 6:32 PM EDT | Special Weather Statement | AKQ | 58 min |
| May 22, 7:24 PM EDT | Mesoscale Discussion | SPC | 96 min |
| May 27, 1:29 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| May 31, 5:21 PM EDT | Special Weather Statement | AKQ | 39 min |
| Jun 2, 3:20 AM EDT | Flash Flood Watch | AKQ | 39 hr |
| Jun 2, 8:12 PM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Jun 3, 5:27 AM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Jun 3, 7:49 AM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Jun 3, 8:30 AM EDT | Flash Flood Warning | AKQ | 3 hr |
| Jun 3, 11:30 AM EDT | Areal Flood Warning | AKQ | 12 hr |
| Jun 3, 11:48 PM EDT | Areal Flood Warning | AKQ | 32 hr |
| Jun 9, 1:34 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 9, 4:01 PM EDT | Special Weather Statement | AKQ | 44 min |
| Jun 9, 5:41 PM EDT | Special Weather Statement | AKQ | 49 min |
| Jun 9, 7:25 PM EDT | Special Weather Statement | AKQ | 50 min |
| Jun 10, 4:12 AM EDT | Flash Flood Watch | AKQ | 22 hr |
| Jun 10, 6:37 PM EDT | Areal Flood Advisory | AKQ | 113 min |
| Jun 10, 8:29 PM EDT | Special Weather Statement | AKQ | 46 min |
| Jun 10, 9:18 PM EDT | Special Weather Statement | AKQ | 42 min |
| Jun 11, 12:27 PM EDT | Coastal Flood Advisory | AKQ | 15 hr |
| Jun 12, 1:11 PM EDT | Coastal Flood Advisory | AKQ | 16 hr |
| Jun 19, 5:07 PM EDT | Special Weather Statement | AKQ | 38 min |
| Jun 20, 2:19 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 20, 6:05 PM EDT | Special Weather Statement | AKQ | 40 min |
| Jun 22, 9:35 PM EDT | Coastal Flood Advisory | AKQ | 5 hr |
| Jun 23, 1:38 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Jun 23, 2:04 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 23, 2:45 PM EDT | Special Weather Statement | AKQ | 45 min |
| Jun 23, 5:40 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 24, 2:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 24, 3:42 PM EDT | Special Weather Statement | AKQ | 48 min |
| Jun 24, 5:08 PM EDT | Severe Thunderstorm Warning | AKQ | 52 min |
| Jun 24, 5:49 PM EDT | Severe Thunderstorm Warning | AKQ | 41 min |
| Jun 27, 4:42 PM EDT | Coastal Flood Statement | AKQ | 11 hr |
| Jul 1, 2:45 PM EDT | Heat Advisory | AKQ | 29 hr |
| Jul 21, 3:02 PM EDT | Coastal Flood Advisory | AKQ | 11 hr |
| Jul 22, 11:20 AM EDT | Flash Flood Watch | AKQ | 23 hr |
| Jul 22, 12:12 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 22, 3:32 PM EDT | Coastal Flood Advisory | AKQ | 13 hr |
| Jul 22, 4:09 PM EDT | Severe Thunderstorm Warning | AKQ | 51 min |
| Jul 23, 2:57 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 23, 10:39 AM EDT | Coastal Flood Statement | AKQ | 5 hr |
| Jul 23, 10:39 AM EDT | Coastal Flood Advisory | AKQ | 17 hr |
| Jul 23, 2:40 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 23, 3:06 PM EDT | Flash Flood Watch | AKQ | 52 hr |
| Jul 23, 10:29 PM EDT | Special Weather Statement | AKQ | 46 min |
| Jul 24, 6:47 AM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Jul 24, 7:18 AM EDT | Special Weather Statement | AKQ | 42 min |
| Jul 25, 2:29 PM EDT | Special Weather Statement | AKQ | 31 min |
| Jul 25, 8:17 PM EDT | Special Weather Statement | AKQ | 28 min |
| Jul 27, 1:52 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 27, 3:30 PM EDT | Special Weather Statement | AKQ | 30 min |
| Jul 27, 3:51 PM EDT | Special Weather Statement | AKQ | 24 min |
| Jul 27, 4:50 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Jul 27, 7:06 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Jul 27, 11:44 PM EDT | Special Weather Statement | AKQ | 61 min |
| Jul 30, 6:16 AM EDT | Special Weather Statement | AKQ | 59 min |
| Jul 30, 9:55 AM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Aug 6, 1:04 PM EDT | Special Weather Statement | AKQ | 41 min |
| Aug 7, 3:27 PM EDT | Heat Advisory | AKQ | 28 hr |
| Aug 13, 9:01 PM EDT | Severe Thunderstorm Warning | AKQ | 44 min |
| Aug 21, 5:03 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Aug 21, 9:51 PM EDT | Coastal Flood Statement | AKQ | 3 hr |
| Aug 28, 1:11 PM EDT | Heat Advisory | AKQ | 6 hr |
| Aug 28, 3:16 PM EDT | Heat Advisory | AKQ | 28 hr |
| Sep 1, 12:16 AM EDT | Special Weather Statement | AKQ | 59 min |
| Sep 1, 1:32 PM EDT | Special Weather Statement | AKQ | 28 min |
| Sep 8, 6:40 AM EDT | Coastal Flood Advisory | AKQ | 21 hr |
| Sep 8, 9:57 AM EDT | Special Weather Statement | AKQ | 48 min |
| Sep 9, 5:35 AM EDT | Coastal Flood Statement | AKQ | 7 hr |
| Sep 9, 9:41 AM EDT | Special Weather Statement | AKQ | 49 min |
| Sep 9, 10:25 AM EDT | Areal Flood Advisory | AKQ | 110 min |
| Sep 9, 11:44 AM EDT | Areal Flood Advisory | AKQ | 2 hr |
| Sep 9, 12:19 PM EDT | Coastal Flood Warning | AKQ | 56 hr |
| Sep 9, 9:30 PM EDT | Areal Flood Advisory | AKQ | 2 hr |
| Sep 9, 9:53 PM EDT | Areal Flood Advisory | AKQ | 112 min |
| Sep 9, 10:47 PM EDT | Flash Flood Warning | AKQ | 3 hr |
| Sep 11, 8:25 AM EDT | Coastal Flood Warning | AKQ | 12 hr |
| Sep 11, 4:34 PM EDT | Special Weather Statement | AKQ | 41 min |
| Sep 11, 5:01 PM EDT | Special Weather Statement | AKQ | 44 min |
| Sep 11, 5:29 PM EDT | Coastal Flood Advisory | AKQ | 37 hr |
| Sep 12, 4:18 PM EDT | Coastal Flood Watch | AKQ | 25 hr |
| Sep 13, 6:24 AM EDT | Coastal Flood Warning | AKQ | 54 hr |
| Sep 15, 4:51 AM EDT | Coastal Flood Advisory | AKQ | 24 hr |
| Sep 16, 4:34 AM EDT | Coastal Flood Advisory | AKQ | 19 hr |
| Sep 16, 1:52 PM EDT | Special Weather Statement | AKQ | 53 min |
| Sep 17, 7:09 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 20, 3:26 PM EDT | Coastal Flood Advisory | AKQ | 13 hr |
| Sep 21, 4:14 AM EDT | Coastal Flood Statement | AKQ | 12 hr |
| Sep 21, 4:47 PM EDT | Coastal Flood Advisory | AKQ | 12 hr |
| Sep 24, 4:01 AM EDT | Coastal Flood Statement | AKQ | 14 hr |
| Sep 24, 9:09 PM EDT | Coastal Flood Advisory | AKQ | 47 hr |
| Sep 28, 1:26 PM EDT | Coastal Flood Statement | AKQ | 8 hr |
| Oct 6, 3:15 PM EDT | Coastal Flood Advisory | AKQ | 15 hr |
| Oct 9, 4:49 AM EDT | Coastal Flood Statement | AKQ | 12 hr |
| Oct 10, 4:23 AM EDT | Flash Flood Watch | AKQ | 47 hr |
| Oct 10, 5:45 AM EDT | Coastal Flood Statement | AKQ | 24 hr |
| Oct 10, 3:26 PM EDT | High Wind Warning | AKQ | 39 hr |
| Oct 10, 3:26 PM EDT | Wind Advisory | AKQ | 34 hr |
| Oct 10, 4:32 PM EDT | Coastal Flood Statement | AKQ | 13 hr |
| Oct 10, 4:32 PM EDT | Coastal Flood Advisory | AKQ | 36 hr |
| Oct 11, 9:58 AM EDT | Tornado Watch | SPC | 13 hr |
| Oct 11, 12:48 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Oct 11, 3:54 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 11, 8:02 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Oct 11, 8:22 PM EDT | Flash Flood Warning | AKQ | 6 hr |
| Oct 11, 9:49 PM EDT | Coastal Flood Advisory | AKQ | 110 min |
| Oct 11, 9:52 PM EDT | Flash Flood Warning | AKQ | 6 hr |
| Oct 11, 11:39 PM EDT | Coastal Flood Warning | AKQ | 5 hr |
| Oct 12, 1:46 AM EDT | Areal Flood Warning | AKQ | 9 hr |
| Oct 13, 5:52 AM EDT | Coastal Flood Statement | AKQ | 9 hr |
| Oct 13, 5:52 AM EDT | Coastal Flood Advisory | AKQ | 16 hr |
| Oct 18, 3:20 PM EDT | Frost Advisory | AKQ | 17 hr |
| Oct 20, 2:52 PM EDT | Wind Advisory | AKQ | 20 hr |
| Oct 27, 1:42 AM EDT | Coastal Flood Advisory | AKQ | 15 hr |
| Nov 2, 6:55 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Nov 6, 12:11 PM EST | Mesoscale Discussion | SPC | 94 min |
| Nov 6, 1:20 PM EST | Special Weather Statement | AKQ | 55 min |
| Nov 9, 3:23 PM EST | Freeze Warning | AKQ | 42 hr |
| Nov 14, 3:32 AM EST | Flood Watch | AKQ | 35 hr |
| Nov 15, 12:15 PM EST | Coastal Flood Statement | AKQ | 9 hr |
| Nov 26, 5:48 AM EST | Coastal Flood Advisory | AKQ | 14 hr |
| Nov 26, 8:51 AM EST | Coastal Flood Statement | AKQ | 7 hr |
| Dec 2, 5:04 AM EST | Coastal Flood Advisory | AKQ | 8 hr |
| Dec 2, 3:51 PM EST | Coastal Flood Advisory | AKQ | 8 hr |
| Dec 8, 2:50 PM EST | Winter Weather Advisory | AKQ | 37 hr |
| Dec 13, 3:02 PM EST | Flood Watch | AKQ | 47 hr |
| Dec 21, 4:36 AM EST | Coastal Flood Advisory | AKQ | 21 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 | 9 |
| Severe Thunderstorm Watch | 5 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 27 |
| Special Weather Statement | 34 |
| Flooding | |
| Areal Flood Warning | 5 |
| Flash Flood Warning | 4 |
| Flash Flood Watch | 5 |
| Flood Watch | 3 |
| Areal Flood Advisory | 13 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 3 |
| Heat | |
| Heat Advisory | 4 |
| Cold | |
| Freeze Warning | 1 |
| Frost Advisory | 1 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 2 |
| High Wind Watch | 1 |
| Wind Advisory | 2 |
| Fire | |
| Red Flag Warning | 1 |
| Fire Weather Watch | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
| Coast and beach | |
| Coastal Flood Warning | 6 |
| Coastal Flood Watch | 1 |
| Coastal Flood Advisory | 26 |
| Coastal Flood Statement | 14 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20172019
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.