Alert archive / Virginia / Northumberland County
Weather alerts in Northumberland County, Virginia, 2008
117 weather alerts in 2008, 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 2008. Tap one for its archive.
- Alerts
- 117
- Warnings
- 19
- Watches
- 29
- Advisories
- 28
- Busiest month
- June23 alerts
- Busiest day
- June 4, 20086 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 2 tornado warnings covering Northumberland County in 2008 had a tornado report inside them.
Northumberland County, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 11 | 6 | 45% | 4 | 50% | 16 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Wakefield, VA: tornado warnings | 70 | 20 | 71% | 65 | 60% | 11 min |
| NWS Wakefield, VA: severe thunderstorm warnings | 288 | 138 | 52% | 333 | 73% | 22 min |
| NWS Wakefield, VA: flash flood warnings | 19 | 12 | 37% | 29 | 59% | 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 19, 4:50 AM EST | Winter Weather Advisory | AKQ | 22 hr |
| Feb 9, 4:48 AM EST | Fire Weather Watch | AKQ | 12 hr |
| Feb 9, 3:49 PM EST | Wind Advisory | AKQ | 32 hr |
| Feb 9, 4:35 PM EST | Red Flag Warning | AKQ | 28 hr |
| Feb 13, 10:10 PM EST | Winter Weather Advisory | AKQ | 10 hr |
| Feb 21, 4:07 PM EST | Winter Weather Advisory | AKQ | 23 hr |
| Feb 22, 12:40 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 22, 7:01 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Mar 1, 4:30 AM EST | Red Flag Warning | AKQ | 16 hr |
| Mar 4, 5:53 PM EST | Tornado Watch | SPC | 9 hr |
| Mar 7, 3:00 PM EST | Wind Advisory | AKQ | 30 hr |
| Mar 8, 12:44 PM EST | Mesoscale Discussion | SPC | 61 min |
| Mar 19, 6:46 AM EDT | Coastal Flood Advisory | AKQ | 23 hr |
| Mar 20, 5:02 AM EDT | Wind Advisory | AKQ | 16 hr |
| Apr 10, 2:50 AM EDT | Dense Fog Advisory | AKQ | 5 hr |
| Apr 10, 3:39 PM EDT | Dense Fog Advisory | AKQ | 17 hr |
| Apr 12, 11:59 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 16, 3:28 PM EDT | Frost Advisory | AKQ | 17 hr |
| Apr 20, 1:47 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Apr 20, 7:14 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Apr 20, 8:01 PM EDT | Tornado Watch | SPC | 5 hr |
| Apr 20, 11:08 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Apr 21, 4:24 AM EDT | Coastal Flood Statement | AKQ | 20 hr |
| Apr 24, 12:21 AM EDT | Dense Fog Advisory | AKQ | 8 hr |
| Apr 28, 4:28 PM EDT | Mesoscale Discussion | SPC | 92 min |
| May 2, 3:58 AM EDT | Coastal Flood Advisory | AKQ | 18 hr |
| May 9, 2:32 AM EDT | Mesoscale Discussion | SPC | 88 min |
| May 9, 3:00 AM EDT | Tornado Watch | SPC | 8 hr |
| May 9, 4:49 AM EDT | Areal Flood Advisory | AKQ | 3 hr |
| May 9, 5:04 AM EDT | Mesoscale Discussion | SPC | 56 min |
| May 9, 6:37 AM EDT | Mesoscale Discussion | SPC | 53 min |
| May 11, 8:18 PM EDT | Areal Flood Advisory | AKQ | 4 hr |
| May 12, 4:08 AM EDT | Wind Advisory | AKQ | 20 hr |
| May 12, 4:58 AM EDT | Coastal Flood Warning | AKQ | 37 hr |
| May 12, 8:38 AM EDT | Coastal Flood Advisory | AKQ | 21 hr |
| May 16, 2:20 PM EDT | Mesoscale Discussion | SPC | 55 min |
| May 20, 1:09 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 31, 12:05 PM EDT | Mesoscale Discussion | SPC | 55 min |
| May 31, 3:07 PM EDT | Tornado Watch | SPC | 6 hr |
| May 31, 5:19 PM EDT | Severe Thunderstorm Warning | AKQ | 71 min |
| May 31, 7:37 PM EDT | Mesoscale Discussion | SPC | 53 min |
| May 31, 10:06 PM EDT | Tornado Warning | AKQ | 39 min |
| Jun 1, 6:58 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jun 4, 12:18 AM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 4, 2:26 AM EDT | Tornado Watch | SPC | 6 hr |
| Jun 4, 3:29 AM EDT | Severe Thunderstorm Warning | AKQ | 46 min |
| Jun 4, 7:23 AM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 4, 12:49 PM EDT | Tornado Watch | SPC | 7 hr |
| Jun 4, 7:34 PM EDT | Tornado Watch | SPC | 5 hr |
| Jun 4, 8:04 PM EDT | Severe Thunderstorm Warning | AKQ | 71 min |
| Jun 6, 3:13 PM EDT | Heat Advisory | AKQ | 4 days |
| Jun 16, 12:54 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 16, 4:35 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jun 16, 5:53 PM EDT | Severe Thunderstorm Warning | AKQ | 52 min |
| Jun 16, 6:22 PM EDT | Severe Thunderstorm Warning | AKQ | 38 min |
| Jun 16, 6:55 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 19, 8:54 PM EDT | Severe Thunderstorm Warning | AKQ | 66 min |
| Jun 19, 9:32 PM EDT | Severe Thunderstorm Warning | AKQ | 43 min |
| Jun 22, 4:28 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jun 27, 11:37 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 27, 12:40 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 27, 4:12 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Jun 29, 4:37 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 30, 7:52 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jul 4, 3:48 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 6, 7:33 PM EDT | Areal Flood Advisory | AKQ | 57 min |
| Jul 6, 8:29 PM EDT | Areal Flood Advisory | AKQ | 2 hr |
| Jul 8, 12:34 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Jul 8, 1:03 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jul 8, 3:48 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jul 22, 9:46 AM EDT | Mesoscale Discussion | SPC | 59 min |
| Jul 22, 10:03 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 22, 11:56 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 12:33 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jul 23, 12:44 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 23, 2:10 PM EDT | Flash Flood Watch | AKQ | 16 hr |
| Jul 23, 3:54 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Jul 23, 7:28 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Jul 24, 12:34 AM EDT | Areal Flood Advisory | AKQ | 3 hr |
| Jul 27, 1:04 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 27, 1:26 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 27, 3:46 PM EDT | Severe Thunderstorm Warning | AKQ | 44 min |
| Jul 27, 4:15 PM EDT | Severe Thunderstorm Warning | AKQ | 45 min |
| Jul 27, 4:29 PM EDT | Tornado Warning | AKQ | 46 min |
| Jul 30, 2:23 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jul 30, 7:47 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Aug 2, 1:18 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Aug 2, 4:05 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 2, 7:09 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Aug 10, 6:29 PM EDT | Severe Thunderstorm Warning | AKQ | 46 min |
| Aug 14, 6:15 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Aug 15, 1:18 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 15, 3:45 PM EDT | Areal Flood Advisory | AKQ | 2 hr |
| Aug 15, 3:56 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Sep 4, 5:00 AM EDT | Tropical Storm Watch | NHC | 48 hr |
| Sep 4, 5:00 PM EDT | Tropical Storm Warning | NHC | 60 hr |
| Sep 4, 5:14 PM EDT | Tropical Storm Watch | AKQ | 19 hr |
| Sep 4, 5:14 PM EDT | Tropical Storm Warning | AKQ | 43 hr |
| Sep 5, 4:19 AM EDT | Flash Flood Watch | AKQ | 36 hr |
| Sep 6, 4:45 AM EDT | Tornado Watch | SPC | 8 hr |
| Sep 6, 8:40 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 9, 8:35 AM EDT | Mesoscale Discussion | SPC | 115 min |
| Sep 9, 1:41 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Sep 9, 1:54 PM EDT | Severe Thunderstorm Warning | AKQ | 23 min |
| Sep 9, 2:05 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 22, 4:30 PM EDT | Coastal Flood Watch | AKQ | 3 days |
| Sep 23, 3:55 AM EDT | Wind Advisory | AKQ | 63 hr |
| Sep 25, 4:41 PM EDT | Coastal Flood Advisory | AKQ | 6 hr |
| Oct 18, 12:56 PM EDT | Coastal Flood Advisory | AKQ | 65 hr |
| Oct 24, 4:45 PM EDT | Coastal Flood Advisory | AKQ | 26 hr |
| Oct 28, 4:24 AM EDT | Wind Advisory | AKQ | 17 hr |
| Oct 30, 3:17 PM EDT | Freeze Warning | AKQ | 18 hr |
| Nov 15, 11:07 AM EST | Mesoscale Discussion | SPC | 53 min |
| Nov 15, 12:22 PM EST | Tornado Watch | SPC | 7 hr |
| Dec 10, 3:30 PM EST | Flood Watch | AKQ | 33 hr |
| Dec 21, 3:27 PM EST | Wind Advisory | AKQ | 19 hr |
| Dec 31, 4:43 AM EST | Wind Advisory | AKQ | 17 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 | 11 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 13 |
| Tornado Watch | 9 |
| Mesoscale Discussion | 40 |
| Flooding | |
| Flash Flood Watch | 2 |
| Flood Watch | 1 |
| Areal Flood Advisory | 6 |
| Winter | |
| Winter Weather Advisory | 3 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 1 |
| Frost Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 8 |
| Fire | |
| Red Flag Warning | 2 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
| Tropical | |
| Tropical Storm Warning | 2 |
| Tropical Storm Watch | 2 |
| Coast and beach | |
| Coastal Flood Warning | 1 |
| Coastal Flood Watch | 1 |
| Coastal Flood Advisory | 6 |
| Coastal Flood Statement | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20072009
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.