Alert archive / Virginia / Northampton County
Weather alerts in Northampton County, Virginia, 2010
116 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Northampton County and its neighbors
Each county as a circle sized by its count in 2010. Tap one for its archive.
- Alerts
- 116
- Warnings
- 14
- Watches
- 15
- Advisories
- 35
- Busiest month
- August30 alerts
- Busiest day
- August 5, 20107 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 1 tornado warnings covering Northampton County in 2010 had a tornado report inside them; 0 of 2 tornado reports fell inside a warning.
Northampton County, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 2 | 0% | |
| Severe thunderstorm warnings | 6 | 4 | 33% | 3 | 100% | 26 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Wakefield, VA: tornado warnings | 50 | 6 | 88% | 16 | 56% | 19 min |
| NWS Wakefield, VA: severe thunderstorm warnings | 170 | 133 | 22% | 362 | 82% | 23 min |
| NWS Wakefield, VA: flash flood warnings | 11 | 9 | 18% | 18 | 89% | 94 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 1, 1:15 AM EST | Dense Fog Advisory | AKQ | 8 hr |
| Jan 7, 3:57 PM EST | Winter Weather Advisory | AKQ | 18 hr |
| Jan 28, 3:56 AM EST | Winter Storm Watch | AKQ | 36 hr |
| Jan 29, 4:04 AM EST | Winter Storm Warning | AKQ | 48 hr |
| Jan 30, 8:10 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Jan 30, 8:53 AM EST | High Surf Advisory | AKQ | 20 hr |
| Feb 4, 3:21 PM EST | Flood Watch | AKQ | 37 hr |
| Feb 4, 4:07 PM EST | Coastal Flood Advisory | AKQ | 60 hr |
| Feb 5, 3:26 AM EST | High Surf Advisory | AKQ | 51 hr |
| Feb 5, 3:52 AM EST | Wind Advisory | AKQ | 41 hr |
| Feb 5, 3:29 PM EST | Winter Weather Advisory | AKQ | 26 hr |
| Feb 5, 4:05 PM EST | High Wind Warning | AKQ | 29 hr |
| Feb 9, 3:26 AM EST | Winter Weather Advisory | AKQ | 43 hr |
| Feb 9, 2:41 PM EST | Wind Advisory | AKQ | 32 hr |
| Feb 24, 3:28 PM EST | Winter Weather Advisory | AKQ | 21 hr |
| Feb 25, 4:08 AM EST | Wind Advisory | AKQ | 37 hr |
| Mar 2, 5:22 AM EST | Coastal Flood Advisory | AKQ | 44 hr |
| Mar 12, 4:11 AM EST | Wind Advisory | AKQ | 24 hr |
| Mar 12, 4:35 AM EST | Flood Watch | AKQ | 24 hr |
| Mar 12, 3:56 PM EST | High Surf Advisory | AKQ | 24 hr |
| Mar 13, 1:12 PM EST | Coastal Flood Advisory | AKQ | 3 days |
| Mar 29, 1:54 AM EDT | Mesoscale Discussion | SPC | 36 min |
| Mar 29, 7:15 AM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Mar 29, 9:57 AM EDT | Areal Flood Advisory | AKQ | 93 min |
| Mar 29, 11:40 AM EDT | Areal Flood Advisory | AKQ | 110 min |
| Apr 26, 6:13 PM EDT | Mesoscale Discussion | SPC | 62 min |
| May 12, 6:38 PM EDT | Severe Thunderstorm Warning | AKQ | 52 min |
| Jun 1, 6:57 PM EDT | Special Weather Statement | AKQ | 48 min |
| Jun 12, 6:59 PM EDT | Special Weather Statement | AKQ | 61 min |
| Jun 14, 9:33 PM EDT | Special Weather Statement | AKQ | 57 min |
| Jun 16, 8:31 AM EDT | Special Weather Statement | AKQ | 59 min |
| Jun 16, 4:07 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jun 26, 1:33 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jul 9, 5:35 AM EDT | Coastal Flood Statement | AKQ | 12 hr |
| Jul 19, 6:18 PM EDT | Special Weather Statement | AKQ | 42 min |
| Jul 19, 6:19 PM EDT | Severe Thunderstorm Warning | AKQ | 41 min |
| Jul 21, 3:35 AM EDT | Heat Advisory | AKQ | 14 hr |
| Jul 22, 3:18 PM EDT | Heat Advisory | AKQ | 28 hr |
| Jul 23, 2:57 PM EDT | Heat Advisory | AKQ | 29 hr |
| Jul 24, 3:44 PM EDT | Heat Advisory | AKQ | 28 hr |
| Jul 29, 11:36 AM EDT | Mesoscale Discussion | SPC | 54 min |
| Jul 29, 11:54 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 29, 4:20 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Jul 29, 6:13 PM EDT | Severe Thunderstorm Warning | AKQ | 62 min |
| Aug 4, 4:04 PM EDT | Heat Advisory | AKQ | 27 hr |
| Aug 4, 8:36 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Aug 5, 1:19 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 5, 3:56 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Aug 5, 6:23 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Aug 5, 7:20 PM EDT | Severe Thunderstorm Warning | AKQ | 40 min |
| Aug 5, 7:43 PM EDT | Severe Thunderstorm Warning | AKQ | 62 min |
| Aug 5, 7:53 PM EDT | Severe Thunderstorm Warning | AKQ | 37 min |
| Aug 5, 9:21 PM EDT | Areal Flood Advisory | AKQ | 114 min |
| Aug 6, 9:21 PM EDT | Special Weather Statement | AKQ | 69 min |
| Aug 6, 9:51 PM EDT | Special Weather Statement | AKQ | 59 min |
| Aug 9, 3:16 AM EDT | Dense Fog Advisory | AKQ | 5 hr |
| Aug 12, 9:29 AM EDT | Mesoscale Discussion | SPC | 91 min |
| Aug 12, 9:39 AM EDT | Special Weather Statement | AKQ | 36 min |
| Aug 12, 10:18 AM EDT | Special Weather Statement | AKQ | 42 min |
| Aug 12, 10:34 AM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 12, 11:51 AM EDT | Special Weather Statement | AKQ | 69 min |
| Aug 12, 12:41 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Aug 12, 4:45 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Aug 13, 4:43 AM EDT | Coastal Flood Statement | AKQ | 39 hr |
| Aug 14, 10:37 PM EDT | Coastal Flood Statement | AKQ | 21 hr |
| Aug 18, 3:12 PM EDT | Special Weather Statement | AKQ | 63 min |
| Aug 24, 1:33 PM EDT | Coastal Flood Advisory | AKQ | 21 hr |
| Aug 28, 4:21 AM EDT | Coastal Flood Statement | AKQ | 15 hr |
| Aug 28, 7:02 PM EDT | Coastal Flood Statement | AKQ | 25 hr |
| Aug 28, 11:00 PM EDT | Hurricane Watch | NHC | 5 days |
| Aug 29, 11:00 AM EDT | Tropical Storm Warning | NHC | 7 days |
| Aug 30, 4:55 PM EDT | Coastal Flood Statement | AKQ | 12 hr |
| Aug 31, 3:54 PM EDT | Coastal Flood Statement | AKQ | 20 hr |
| Aug 31, 5:43 PM EDT | Hurricane Watch | AKQ | 60 hr |
| Sep 1, 5:13 PM EDT | Tropical Storm Warning | AKQ | 48 hr |
| Sep 3, 5:22 PM EDT | Coastal Flood Statement | AKQ | 27 hr |
| Sep 18, 8:43 AM EDT | Coastal Flood Statement | AKQ | 3 days |
| Sep 27, 2:02 PM EDT | Special Weather Statement | AKQ | 58 min |
| Sep 27, 2:42 PM EDT | Special Weather Statement | AKQ | 63 min |
| Sep 28, 8:00 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 29, 4:41 AM EDT | Flash Flood Watch | AKQ | 47 hr |
| Sep 29, 4:00 PM EDT | Wind Advisory | AKQ | 28 hr |
| Sep 29, 4:07 PM EDT | High Surf Advisory | AKQ | 38 hr |
| Sep 29, 7:37 PM EDT | Special Weather Statement | AKQ | 38 min |
| Sep 30, 4:02 AM EDT | Mesoscale Discussion | SPC | 118 min |
| Sep 30, 4:55 AM EDT | Tornado Watch | SPC | 8 hr |
| Sep 30, 8:25 AM EDT | Mesoscale Discussion | SPC | 95 min |
| Sep 30, 10:49 AM EDT | Mesoscale Discussion | SPC | 116 min |
| Sep 30, 5:43 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Oct 1, 12:01 AM EDT | Mesoscale Discussion | SPC | 89 min |
| Oct 3, 8:17 PM EDT | High Surf Advisory | AKQ | 21 hr |
| Oct 27, 5:28 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 27, 12:13 PM EDT | Tornado Watch | SPC | 8 hr |
| Oct 27, 7:16 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Oct 27, 7:46 PM EDT | Tornado Watch | SPC | 8 hr |
| Oct 27, 10:31 PM EDT | Tornado Warning | AKQ | 44 min |
| Oct 27, 10:41 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Oct 28, 12:54 AM EDT | Mesoscale Discussion | SPC | 66 min |
| Nov 7, 4:26 AM EST | Coastal Flood Statement | AKQ | 15 hr |
| Nov 10, 3:47 PM EST | High Surf Advisory | AKQ | 71 hr |
| Nov 12, 3:39 AM EST | Coastal Flood Advisory | AKQ | 30 hr |
| Nov 14, 11:37 PM EST | Dense Fog Advisory | AKQ | 7 hr |
| Nov 17, 2:36 AM EST | Special Weather Statement | AKQ | 54 min |
| Nov 22, 2:30 AM EST | Dense Fog Advisory | AKQ | 7 hr |
| Dec 1, 5:18 AM EST | Mesoscale Discussion | SPC | 117 min |
| Dec 1, 6:12 AM EST | Tornado Watch | SPC | 4 hr |
| Dec 1, 7:51 AM EST | Mesoscale Discussion | SPC | 84 min |
| Dec 1, 10:14 AM EST | Special Weather Statement | AKQ | 61 min |
| Dec 15, 3:11 PM EST | Winter Storm Warning | AKQ | 28 hr |
| Dec 15, 3:11 PM EST | Winter Weather Advisory | AKQ | 30 hr |
| Dec 16, 11:00 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 24, 3:51 PM EST | Winter Storm Watch | AKQ | 24 hr |
| Dec 25, 12:02 PM EST | Winter Storm Warning | AKQ | 39 hr |
| Dec 26, 4:09 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 26, 3:36 PM EST | Blizzard Warning | AKQ | 12 hr |
| Dec 27, 9:02 AM EST | Wind 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 | 6 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 4 |
| Mesoscale Discussion | 26 |
| Special Weather Statement | 16 |
| Flooding | |
| Flash Flood Watch | 1 |
| Flood Watch | 2 |
| Areal Flood Advisory | 4 |
| Winter | |
| Blizzard Warning | 1 |
| Winter Storm Warning | 3 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 5 |
| Heat | |
| Heat Advisory | 5 |
| Wind and dust | |
| High Wind Warning | 1 |
| Wind Advisory | 6 |
| Fog and smoke | |
| Dense Fog Advisory | 4 |
| Tropical | |
| Tropical Storm Warning | 2 |
| Hurricane Watch | 2 |
| Coast and beach | |
| Coastal Flood Advisory | 5 |
| High Surf Advisory | 6 |
| Coastal Flood Statement | 10 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20092011
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.