Alert archive / Virginia / Spotsylvania County
Weather alerts in Spotsylvania County, Virginia, 2011
207 weather alerts in 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Spotsylvania County and its neighbors
Each county as a circle sized by its count in 2011. Tap one for its archive.
- Alerts
- 207
- Warnings
- 57
- Watches
- 42
- Advisories
- 20
- Busiest month
- April33 alerts
- Busiest day
- April 27, 201110 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 6 tornado warnings covering Spotsylvania County in 2011 had a tornado report inside them.
Spotsylvania County, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 6 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 28 | 22 | 21% | 24 | 92% | 21 min |
| Flash flood warnings | 8 | 6 | 25% | 1 | 100% | 179 min |
Each office's whole area, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Baltimore/Washington: tornado warnings | 96 | 27 | 72% | 45 | 67% | 11 min |
| NWS Baltimore/Washington: severe thunderstorm warnings | 440 | 335 | 24% | 963 | 78% | 18 min |
| NWS Baltimore/Washington: flash flood warnings | 170 | 99 | 42% | 341 | 84% | 121 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 10, 9:39 PM EST | Winter Weather Advisory | LWX | 55 hr |
| Jan 17, 2:44 PM EST | Winter Weather Advisory | LWX | 20 hr |
| Jan 17, 7:44 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 18, 8:19 PM EST | Dense Fog Advisory | LWX | 13 hr |
| Jan 25, 10:16 AM EST | Winter Storm Watch | LWX | 18 hr |
| Jan 25, 6:02 PM EST | Winter Storm Warning | LWX | 29 hr |
| Jan 26, 3:58 AM EST | Winter Weather Advisory | LWX | 19 hr |
| Jan 26, 2:19 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 31, 2:40 PM EST | Winter Weather Advisory | LWX | 21 hr |
| Feb 13, 11:19 AM EST | Fire Weather Watch | LWX | 15 hr |
| Feb 14, 2:45 AM EST | Wind Advisory | LWX | 22 hr |
| Feb 14, 2:46 AM EST | Red Flag Warning | LWX | 15 hr |
| Feb 18, 3:16 AM EST | Fire Weather Watch | LWX | 11 hr |
| Feb 18, 2:03 PM EST | Red Flag Warning | LWX | 31 hr |
| Feb 18, 5:22 PM EST | High Wind Warning | LWX | 26 hr |
| Feb 18, 5:22 PM EST | Wind Advisory | LWX | 19 hr |
| Feb 19, 6:33 PM EST | Wind Advisory | LWX | 5 hr |
| Feb 24, 1:41 PM EST | Wind Advisory | LWX | 24 hr |
| Feb 24, 8:36 PM EST | High Wind Warning | LWX | 22 hr |
| Feb 25, 11:38 AM EST | Special Weather Statement | LWX | 52 min |
| Feb 25, 11:41 AM EST | Special Weather Statement | LWX | 49 min |
| Feb 25, 12:19 PM EST | Severe Thunderstorm Watch | SPC | 3 hr |
| Feb 28, 8:57 AM EST | Tornado Watch | SPC | 9 hr |
| Feb 28, 11:59 AM EST | Special Weather Statement | LWX | 31 min |
| Feb 28, 12:49 PM EST | Mesoscale Discussion | SPC | 56 min |
| Mar 8, 3:14 AM EST | Flood Watch | LWX | 65 hr |
| Mar 9, 9:26 PM EST | River Flood Warning | LWX | 30 hr |
| Mar 10, 1:25 PM EST | Severe Thunderstorm Watch | SPC | 7 hr |
| Mar 10, 4:26 PM EST | Mesoscale Discussion | SPC | 94 min |
| Mar 10, 4:28 PM EST | Special Weather Statement | LWX | 32 min |
| Mar 10, 4:36 PM EST | Flash Flood Warning | LWX | 3 hr |
| Mar 10, 5:18 PM EST | Severe Thunderstorm Warning | LWX | 57 min |
| Mar 10, 6:10 PM EST | Severe Thunderstorm Warning | LWX | 65 min |
| Mar 10, 7:21 PM EST | Areal Flood Warning | LWX | 3 hr |
| Mar 21, 7:24 PM EDT | Special Weather Statement | LWX | 66 min |
| Mar 23, 4:13 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Mar 23, 8:13 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Mar 23, 8:28 PM EDT | Special Weather Statement | LWX | 32 min |
| Mar 23, 8:29 PM EDT | Special Weather Statement | LWX | 31 min |
| Mar 26, 4:09 AM EDT | Winter Weather Advisory | LWX | 30 hr |
| Apr 5, 2:13 AM EDT | Mesoscale Discussion | SPC | 32 min |
| Apr 5, 2:18 AM EDT | Tornado Watch | SPC | 8 hr |
| Apr 5, 3:34 AM EDT | Mesoscale Discussion | SPC | 116 min |
| Apr 5, 3:56 AM EDT | Special Weather Statement | LWX | 64 min |
| Apr 5, 4:05 AM EDT | Severe Thunderstorm Warning | LWX | 40 min |
| Apr 5, 9:21 AM EDT | Special Weather Statement | LWX | 54 min |
| Apr 15, 4:34 AM EDT | Flash Flood Watch | LWX | 41 hr |
| Apr 16, 12:52 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Apr 16, 1:29 PM EDT | Tornado Watch | SPC | 8 hr |
| Apr 16, 4:37 PM EDT | Severe Thunderstorm Warning | LWX | 38 min |
| Apr 16, 5:36 PM EDT | Severe Thunderstorm Warning | LWX | 39 min |
| Apr 16, 6:38 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Apr 16, 8:12 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Apr 24, 9:02 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Apr 27, 9:51 AM EDT | Flash Flood Watch | LWX | 29 hr |
| Apr 27, 1:23 PM EDT | Tornado Watch | SPC | 5 hr |
| Apr 27, 4:39 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Apr 27, 4:44 PM EDT | Severe Thunderstorm Warning | LWX | 46 min |
| Apr 27, 5:08 PM EDT | Tornado Warning | LWX | 37 min |
| Apr 27, 5:30 PM EDT | Severe Thunderstorm Warning | LWX | 45 min |
| Apr 27, 5:46 PM EDT | Tornado Warning | LWX | 29 min |
| Apr 27, 6:00 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Apr 27, 6:15 PM EDT | Tornado Watch | SPC | 6 hr |
| Apr 27, 7:55 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Apr 27, 8:12 PM EDT | Severe Thunderstorm Warning | LWX | 28 min |
| Apr 27, 8:30 PM EDT | Tornado Warning | LWX | 30 min |
| Apr 27, 9:24 PM EDT | Tornado Warning | LWX | 18 min |
| Apr 27, 10:12 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Apr 28, 12:27 AM EDT | Mesoscale Discussion | SPC | 63 min |
| Apr 28, 12:41 AM EDT | Tornado Watch | SPC | 7 hr |
| Apr 28, 7:38 AM EDT | Tornado Watch | SPC | 7 hr |
| Apr 28, 10:03 AM EDT | Severe Thunderstorm Warning | LWX | 42 min |
| Apr 28, 10:44 AM EDT | Mesoscale Discussion | SPC | 61 min |
| May 15, 1:38 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 16, 5:39 PM EDT | Special Weather Statement | LWX | 66 min |
| May 16, 6:20 PM EDT | Special Weather Statement | LWX | 55 min |
| May 16, 7:16 PM EDT | Special Weather Statement | LWX | 44 min |
| May 17, 3:45 AM EDT | Flash Flood Watch | LWX | 44 hr |
| May 17, 10:58 AM EDT | Special Weather Statement | LWX | 62 min |
| May 17, 11:14 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 17, 1:22 PM EDT | Flash Flood Warning | LWX | 3 hr |
| May 17, 2:41 PM EDT | Special Weather Statement | LWX | 49 min |
| May 18, 11:55 AM EDT | Mesoscale Discussion | SPC | 65 min |
| May 18, 12:55 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 18, 3:08 PM EDT | Mesoscale Discussion | SPC | 67 min |
| May 18, 5:15 PM EDT | Severe Thunderstorm Warning | LWX | 45 min |
| May 18, 6:01 PM EDT | Mesoscale Discussion | SPC | 89 min |
| May 18, 6:44 PM EDT | Severe Thunderstorm Warning | LWX | 46 min |
| May 19, 4:36 AM EDT | Flash Flood Watch | LWX | 14 hr |
| May 23, 10:33 AM EDT | Mesoscale Discussion | SPC | 87 min |
| May 23, 10:48 AM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| May 23, 2:33 PM EDT | Mesoscale Discussion | SPC | 87 min |
| May 24, 12:42 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 27, 12:24 PM EDT | Mesoscale Discussion | SPC | 96 min |
| May 27, 12:57 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| May 27, 3:29 PM EDT | Mesoscale Discussion | SPC | 91 min |
| May 27, 6:13 PM EDT | Special Weather Statement | LWX | 32 min |
| May 27, 6:17 PM EDT | Special Weather Statement | AKQ | 28 min |
| May 27, 6:40 PM EDT | Severe Thunderstorm Warning | LWX | 35 min |
| May 27, 6:45 PM EDT | Tornado Warning | LWX | 30 min |
| May 29, 1:46 PM EDT | Heat Advisory | LWX | 31 hr |
| May 30, 8:37 PM EDT | Heat Advisory | LWX | 23 hr |
| May 31, 1:26 PM EDT | Heat Advisory | LWX | 31 hr |
| Jun 1, 1:37 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jun 1, 2:24 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 1, 5:56 PM EDT | Special Weather Statement | LWX | 49 min |
| Jun 1, 6:27 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Jun 1, 6:34 PM EDT | Severe Thunderstorm Warning | LWX | 41 min |
| Jun 1, 7:06 PM EDT | Severe Thunderstorm Warning | LWX | 39 min |
| Jun 1, 7:16 PM EDT | Severe Thunderstorm Warning | LWX | 35 min |
| Jun 1, 8:00 PM EDT | Special Weather Statement | LWX | 30 min |
| Jun 1, 8:25 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 7, 1:33 PM EDT | Heat Advisory | LWX | 30 hr |
| Jun 8, 1:28 PM EDT | Heat Advisory | LWX | 31 hr |
| Jun 9, 12:53 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 9, 1:45 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Jun 9, 11:29 PM EDT | Severe Thunderstorm Warning | LWX | 46 min |
| Jun 10, 12:14 AM EDT | Severe Thunderstorm Warning | LWX | 30 min |
| Jun 10, 12:42 AM EDT | Special Weather Statement | LWX | 48 min |
| Jun 11, 12:44 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Jun 11, 3:11 PM EDT | Special Weather Statement | LWX | 34 min |
| Jun 12, 12:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 12, 1:48 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 17, 5:04 PM EDT | Severe Thunderstorm Warning | LWX | 41 min |
| Jun 19, 4:28 AM EDT | Special Weather Statement | LWX | 47 min |
| Jun 19, 4:56 AM EDT | Flash Flood Warning | LWX | 110 min |
| Jun 22, 2:03 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jun 22, 4:45 PM EDT | Special Weather Statement | LWX | 30 min |
| Jun 24, 1:05 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 28, 2:44 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Jul 3, 4:21 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 3, 8:15 PM EDT | Severe Thunderstorm Warning | LWX | 48 min |
| Jul 3, 8:41 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Jul 4, 12:10 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jul 4, 2:34 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 7, 3:14 PM EDT | Flash Flood Watch | LWX | 29 hr |
| Jul 8, 11:44 AM EDT | Mesoscale Discussion | SPC | 61 min |
| Jul 8, 1:51 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 8, 4:02 PM EDT | Special Weather Statement | LWX | 28 min |
| Jul 8, 4:22 PM EDT | Severe Thunderstorm Warning | LWX | 38 min |
| Jul 8, 4:54 PM EDT | Severe Thunderstorm Warning | LWX | 35 min |
| Jul 8, 5:20 PM EDT | Special Weather Statement | LWX | 40 min |
| Jul 11, 1:31 PM EDT | Heat Advisory | LWX | 23 hr |
| Jul 11, 5:47 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 11, 7:44 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Jul 11, 7:57 PM EDT | Severe Thunderstorm Warning | LWX | 48 min |
| Jul 11, 8:26 PM EDT | Special Weather Statement | LWX | 34 min |
| Jul 11, 8:46 PM EDT | Severe Thunderstorm Warning | LWX | 44 min |
| Jul 11, 9:26 PM EDT | Severe Thunderstorm Warning | LWX | 64 min |
| Jul 13, 1:43 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jul 13, 2:21 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 13, 4:30 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Jul 13, 5:08 PM EDT | Severe Thunderstorm Warning | LWX | 52 min |
| Jul 13, 5:33 PM EDT | Special Weather Statement | LWX | 27 min |
| Jul 19, 12:12 PM EDT | Excessive Heat Watch | LWX | 27 hr |
| Jul 20, 3:19 PM EDT | Excessive Heat Warning | LWX | 31 hr |
| Jul 20, 3:19 PM EDT | Excessive Heat Warning | LWX | 54 hr |
| Jul 21, 3:38 PM EDT | Excessive Heat Warning | LWX | 52 hr |
| Jul 23, 3:29 PM EDT | Heat Advisory | LWX | 29 hr |
| Jul 28, 12:53 PM EDT | Heat Advisory | LWX | 31 hr |
| Aug 1, 3:22 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Aug 1, 7:14 PM EDT | Special Weather Statement | LWX | 31 min |
| Aug 3, 1:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Aug 3, 3:32 PM EDT | Special Weather Statement | LWX | 13 min |
| Aug 7, 12:52 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Aug 13, 2:07 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Aug 14, 3:23 AM EDT | Flash Flood Watch | LWX | 20 hr |
| Aug 14, 6:37 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Aug 21, 11:54 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 21, 12:52 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 21, 3:01 PM EDT | Special Weather Statement | LWX | 29 min |
| Aug 21, 4:02 PM EDT | Special Weather Statement | LWX | 28 min |
| Aug 21, 7:12 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Aug 21, 7:53 PM EDT | Special Weather Statement | LWX | 7 min |
| Aug 25, 8:18 AM EDT | Flash Flood Watch | LWX | 12 hr |
| Aug 25, 2:47 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Aug 25, 3:23 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 25, 3:57 PM EDT | Special Weather Statement | LWX | 48 min |
| Aug 25, 4:05 PM EDT | Severe Thunderstorm Warning | LWX | 40 min |
| Aug 25, 4:42 PM EDT | Severe Thunderstorm Warning | LWX | 48 min |
| Aug 25, 4:46 PM EDT | Special Weather Statement | LWX | 29 min |
| Aug 25, 5:16 PM EDT | Special Weather Statement | LWX | 29 min |
| Aug 25, 5:35 PM EDT | Tropical Storm Watch | LWX | 12 hr |
| Aug 26, 5:06 AM EDT | Flash Flood Watch | LWX | 47 hr |
| Aug 26, 5:09 AM EDT | Tropical Storm Warning | LWX | 57 hr |
| Aug 27, 5:02 PM EDT | Flash Flood Warning | LWX | 6 hr |
| Aug 27, 10:56 PM EDT | Areal Flood Warning | LWX | 5 hr |
| Sep 3, 11:41 AM EDT | Special Weather Statement | LWX | 34 min |
| Sep 5, 4:06 AM EDT | Flash Flood Watch | LWX | 5 days |
| Sep 5, 11:42 PM EDT | Special Weather Statement | LWX | 33 min |
| Sep 5, 11:56 PM EDT | Flash Flood Warning | LWX | 2 hr |
| Sep 7, 11:38 AM EDT | Flash Flood Warning | LWX | 3 hr |
| Sep 8, 7:01 PM EDT | Flash Flood Warning | LWX | 4 hr |
| Sep 8, 10:59 PM EDT | Areal Flood Warning | LWX | 10 hr |
| Sep 22, 11:44 AM EDT | Flash Flood Watch | LWX | 32 hr |
| Sep 23, 9:28 AM EDT | Special Weather Statement | LWX | 62 min |
| Sep 23, 9:31 PM EDT | Dense Fog Advisory | LWX | 11 hr |
| Sep 27, 3:20 PM EDT | Severe Thunderstorm Warning | LWX | 40 min |
| Sep 27, 4:10 PM EDT | Flash Flood Warning | LWX | 91 min |
| Oct 13, 3:59 PM EDT | Special Weather Statement | LWX | 11 min |
| Oct 13, 4:28 PM EDT | Tornado Watch | SPC | 4 hr |
| Oct 13, 6:14 PM EDT | Tornado Warning | LWX | 31 min |
| Oct 13, 6:53 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Oct 25, 12:22 AM EDT | Dense Fog Advisory | LWX | 6 hr |
| Oct 29, 10:32 AM EDT | Freeze Warning | LWX | 22 hr |
| Dec 6, 8:24 PM EST | Flood Watch | LWX | 29 hr |
| Dec 7, 3:35 PM EST | Areal Flood Warning | LWX | 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 | 28 |
| Tornado Warning | 6 |
| Severe Thunderstorm Watch | 17 |
| Tornado Watch | 8 |
| Mesoscale Discussion | 50 |
| Special Weather Statement | 38 |
| Flooding | |
| Areal Flood Warning | 4 |
| Flash Flood Warning | 8 |
| River Flood Warning | 1 |
| Flash Flood Watch | 10 |
| Flood Watch | 2 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 5 |
| Heat | |
| Excessive Heat Warning | 3 |
| Excessive Heat Watch | 1 |
| Heat Advisory | 8 |
| Cold | |
| Freeze Warning | 1 |
| Wind and dust | |
| High Wind Warning | 2 |
| Wind Advisory | 4 |
| Fire | |
| Red Flag Warning | 2 |
| Fire Weather Watch | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
| 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 archive20102012
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.