Alert archive / Virginia / Wythe County
Weather alerts in Wythe County, Virginia, 2011
218 weather alerts in 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Wythe County and its neighbors
Each county as a circle sized by its count in 2011. Tap one for its archive.
- Alerts
- 218
- Warnings
- 81
- Watches
- 35
- Advisories
- 30
- Busiest month
- May50 alerts
- Busiest day
- April 9, 201114 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
1 of 11 tornado warnings covering Wythe County in 2011 had a tornado report inside them.
Wythe County, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 11 | 1 | 91% | 0 | ||
| Severe thunderstorm warnings | 53 | 43 | 19% | 23 | 78% | 21 min |
| Flash flood warnings | 9 | 7 | 22% | 1 | 100% | 9 min |
Each office's whole area, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Blacksburg, VA: tornado warnings | 78 | 7 | 91% | 17 | 76% | 9 min |
| NWS Blacksburg, VA: severe thunderstorm warnings | 576 | 456 | 21% | 1,384 | 77% | 23 min |
| NWS Blacksburg, VA: flash flood warnings | 89 | 45 | 49% | 125 | 82% | 96 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 6, 4:04 AM EST | Winter Weather Advisory | RNK | 3 days |
| Jan 8, 6:04 PM EST | Wind Chill Advisory | RNK | 16 hr |
| Jan 10, 4:44 AM EST | Winter Weather Advisory | RNK | 3 days |
| Jan 17, 3:55 PM EST | Winter Weather Advisory | RNK | 17 hr |
| Jan 25, 4:25 AM EST | Winter Storm Watch | RNK | 11 hr |
| Jan 25, 3:31 PM EST | Winter Storm Warning | RNK | 29 hr |
| Jan 27, 3:23 PM EST | Winter Weather Advisory | RNK | 23 hr |
| Feb 1, 3:19 PM EST | Wind Advisory | RNK | 37 hr |
| Feb 7, 4:00 PM EST | Wind Advisory | RNK | 20 hr |
| Feb 13, 1:08 PM EST | Fire Weather Watch | RNK | 15 hr |
| Feb 14, 3:46 AM EST | Red Flag Warning | RNK | 17 hr |
| Feb 14, 4:09 AM EST | Wind Advisory | RNK | 19 hr |
| Feb 18, 4:08 AM EST | Fire Weather Watch | RNK | 11 hr |
| Feb 18, 3:33 PM EST | Red Flag Warning | RNK | 29 hr |
| Feb 24, 3:36 PM EST | Wind Advisory | RNK | 27 hr |
| Feb 25, 1:48 AM EST | Mesoscale Discussion | SPC | 27 min |
| Feb 25, 3:58 AM EST | Special Weather Statement | RNK | 62 min |
| Feb 28, 8:36 AM EST | Mesoscale Discussion | SPC | 24 min |
| Feb 28, 8:57 AM EST | Tornado Watch | SPC | 9 hr |
| Feb 28, 10:58 AM EST | Special Weather Statement | RNK | 47 min |
| Feb 28, 4:49 PM EST | Areal Flood Advisory | RNK | 4 hr |
| Feb 28, 8:42 PM EST | Areal Flood Advisory | RNK | 3 hr |
| Mar 5, 3:43 AM EST | Flood Watch | RNK | 39 hr |
| Mar 6, 9:08 AM EST | Areal Flood Warning | RNK | 6 hr |
| Mar 6, 2:46 PM EST | Areal Flood Warning | RNK | 3 hr |
| Mar 8, 4:20 AM EST | Flood Watch | RNK | 63 hr |
| Mar 9, 2:04 PM EST | Areal Flood Warning | RNK | 7 hr |
| Mar 15, 10:09 AM EDT | Special Weather Statement | RNK | 6 min |
| Mar 23, 3:38 PM EDT | Mesoscale Discussion | SPC | 37 min |
| Mar 23, 3:45 PM EDT | Tornado Watch | SPC | 6 hr |
| Mar 23, 3:54 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Mar 23, 4:42 PM EDT | Severe Thunderstorm Warning | RNK | 63 min |
| Mar 23, 7:57 PM EDT | Severe Thunderstorm Warning | RNK | 63 min |
| Mar 23, 8:39 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Mar 24, 3:45 AM EDT | Wind Advisory | RNK | 8 hr |
| Mar 26, 4:20 AM EDT | Winter Weather Advisory | RNK | 29 hr |
| Mar 27, 4:14 PM EDT | Winter Weather Advisory | RNK | 19 hr |
| Mar 30, 10:39 AM EDT | Dense Fog Advisory | RNK | 36 hr |
| Apr 1, 3:46 PM EDT | Wind Advisory | RNK | 26 hr |
| Apr 3, 4:03 PM EDT | Wind Advisory | RNK | 37 hr |
| Apr 4, 11:46 PM EDT | Special Weather Statement | RNK | 44 min |
| Apr 5, 12:32 AM EDT | Severe Thunderstorm Warning | RNK | 58 min |
| Apr 5, 12:36 AM EDT | Severe Thunderstorm Watch | SPC | 111 min |
| Apr 8, 6:15 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 8, 7:17 PM EDT | Severe Thunderstorm Warning | RNK | 28 min |
| Apr 8, 7:35 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Apr 8, 9:58 PM EDT | Severe Thunderstorm Warning | RNK | 32 min |
| Apr 8, 10:29 PM EDT | Severe Thunderstorm Warning | RNK | 14 min |
| Apr 8, 11:07 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 8, 11:11 PM EDT | Severe Thunderstorm Warning | RNK | 49 min |
| Apr 9, 12:00 AM EDT | Severe Thunderstorm Warning | RNK | 30 min |
| Apr 9, 12:27 AM EDT | Severe Thunderstorm Warning | RNK | 48 min |
| Apr 9, 12:42 AM EDT | Mesoscale Discussion | SPC | 93 min |
| Apr 9, 3:23 AM EDT | Mesoscale Discussion | SPC | 67 min |
| Apr 9, 12:34 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Apr 9, 2:00 PM EDT | Tornado Watch | SPC | 7 hr |
| Apr 9, 2:50 PM EDT | Severe Thunderstorm Warning | RNK | 85 min |
| Apr 9, 3:18 PM EDT | Severe Thunderstorm Warning | RNK | 57 min |
| Apr 9, 4:21 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Apr 9, 4:58 PM EDT | Special Weather Statement | RNK | 32 min |
| Apr 10, 4:21 AM EDT | Dense Fog Advisory | RNK | 5 hr |
| Apr 15, 4:33 AM EDT | Wind Advisory | RNK | 59 hr |
| Apr 15, 4:34 AM EDT | Flash Flood Watch | RNK | 36 hr |
| Apr 16, 9:58 AM EDT | Special Weather Statement | RNK | 32 min |
| Apr 25, 12:58 PM EDT | Special Weather Statement | RNK | 62 min |
| Apr 25, 2:15 PM EDT | Special Weather Statement | RNK | 45 min |
| Apr 25, 3:58 PM EDT | Severe Thunderstorm Warning | RNK | 62 min |
| Apr 25, 4:44 PM EDT | Severe Thunderstorm Warning | RNK | 61 min |
| Apr 25, 5:17 PM EDT | Tornado Warning | RNK | 14 min |
| Apr 25, 5:47 PM EDT | Severe Thunderstorm Warning | RNK | 11 min |
| Apr 26, 2:09 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 27, 3:22 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Apr 27, 6:15 PM EDT | Tornado Watch | SPC | 6 hr |
| Apr 27, 9:06 PM EDT | Flash Flood Watch | RNK | 13 hr |
| Apr 27, 10:12 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Apr 27, 10:26 PM EDT | Tornado Warning | RNK | 49 min |
| Apr 27, 11:12 PM EDT | Tornado Warning | RNK | 48 min |
| Apr 27, 11:19 PM EDT | Flash Flood Warning | RNK | 6 hr |
| Apr 27, 11:53 PM EDT | Tornado Warning | RNK | 52 min |
| Apr 28, 12:01 AM EDT | Tornado Warning | RNK | 44 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, 12:45 AM EDT | Tornado Warning | RNK | 45 min |
| Apr 28, 1:12 AM EDT | Tornado Warning | RNK | 33 min |
| Apr 28, 1:20 AM EDT | Tornado Warning | RNK | 25 min |
| Apr 28, 1:47 AM EDT | Tornado Warning | RNK | 9 min |
| May 3, 3:52 PM EDT | Frost Advisory | RNK | 41 hr |
| May 10, 2:18 PM EDT | Mesoscale Discussion | SPC | 87 min |
| May 10, 3:20 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 10, 3:47 PM EDT | Severe Thunderstorm Warning | RNK | 42 min |
| May 10, 6:02 PM EDT | Mesoscale Discussion | SPC | 58 min |
| May 10, 9:01 PM EDT | Mesoscale Discussion | SPC | 59 min |
| May 11, 6:25 PM EDT | Severe Thunderstorm Warning | RNK | 65 min |
| May 12, 4:28 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 12, 4:40 PM EDT | Severe Thunderstorm Warning | RNK | 50 min |
| May 12, 5:25 PM EDT | Severe Thunderstorm Warning | RNK | 65 min |
| May 12, 5:27 PM EDT | Flash Flood Watch | RNK | 5 hr |
| May 12, 6:32 PM EDT | Severe Thunderstorm Warning | RNK | 58 min |
| May 12, 6:56 PM EDT | Flash Flood Warning | RNK | 4 hr |
| May 13, 1:10 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 13, 2:07 PM EDT | Severe Thunderstorm Warning | RNK | 38 min |
| May 13, 2:40 PM EDT | Severe Thunderstorm Warning | RNK | 51 min |
| May 13, 3:16 PM EDT | Flash Flood Watch | RNK | 6 hr |
| May 13, 3:47 PM EDT | Mesoscale Discussion | SPC | 58 min |
| May 13, 5:16 PM EDT | Severe Thunderstorm Warning | RNK | 59 min |
| May 13, 5:30 PM EDT | Flash Flood Warning | RNK | 6 hr |
| May 13, 6:19 PM EDT | Flash Flood Warning | RNK | 3 hr |
| May 14, 6:11 PM EDT | Special Weather Statement | RNK | 79 min |
| May 22, 5:40 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 22, 7:26 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 22, 7:44 PM EDT | Severe Thunderstorm Warning | RNK | 61 min |
| May 22, 8:02 PM EDT | Severe Thunderstorm Warning | RNK | 58 min |
| May 22, 8:28 PM EDT | Severe Thunderstorm Warning | RNK | 32 min |
| May 22, 8:33 PM EDT | Flash Flood Warning | RNK | 4 hr |
| May 23, 3:16 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 24, 8:34 AM EDT | Mesoscale Discussion | SPC | 116 min |
| May 24, 10:00 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 24, 11:01 AM EDT | Special Weather Statement | RNK | 44 min |
| May 24, 3:33 PM EDT | Mesoscale Discussion | SPC | 87 min |
| May 24, 4:31 PM EDT | Severe Thunderstorm Warning | RNK | 59 min |
| May 24, 4:43 PM EDT | Tornado Watch | SPC | 5 hr |
| May 24, 5:29 PM EDT | Severe Thunderstorm Warning | RNK | 61 min |
| May 24, 7:33 PM EDT | Mesoscale Discussion | SPC | 57 min |
| May 26, 1:15 PM EDT | Mesoscale Discussion | SPC | 90 min |
| May 26, 1:42 PM EDT | Severe Thunderstorm Watch | SPC | 11 hr |
| May 26, 4:30 PM EDT | Mesoscale Discussion | SPC | 60 min |
| May 26, 5:36 PM EDT | Severe Thunderstorm Warning | RNK | 50 min |
| May 26, 6:38 PM EDT | Severe Thunderstorm Warning | RNK | 67 min |
| May 26, 7:38 PM EDT | Severe Thunderstorm Warning | RNK | 41 min |
| May 26, 7:48 PM EDT | Severe Thunderstorm Warning | RNK | 57 min |
| May 26, 8:03 PM EDT | Severe Thunderstorm Warning | RNK | 42 min |
| May 26, 8:12 PM EDT | Severe Thunderstorm Warning | RNK | 48 min |
| May 26, 8:43 PM EDT | Severe Thunderstorm Warning | RNK | 62 min |
| May 26, 9:04 PM EDT | Flash Flood Warning | RNK | 4 hr |
| May 26, 10:17 PM EDT | Severe Thunderstorm Warning | RNK | 58 min |
| May 27, 6:08 AM EDT | Flash Flood Watch | RNK | 16 hr |
| Jun 1, 4:35 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jun 7, 5:21 PM EDT | Special Weather Statement | RNK | 54 min |
| Jun 7, 6:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 8, 5:15 PM EDT | Special Weather Statement | RNK | 60 min |
| Jun 9, 1:10 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 9, 4:27 PM EDT | Severe Thunderstorm Warning | RNK | 63 min |
| Jun 9, 5:21 PM EDT | Severe Thunderstorm Warning | RNK | 54 min |
| Jun 9, 5:32 PM EDT | Severe Thunderstorm Warning | RNK | 58 min |
| Jun 9, 6:02 PM EDT | Flash Flood Warning | RNK | 3 hr |
| Jun 9, 6:28 PM EDT | Severe Thunderstorm Warning | RNK | 50 min |
| Jun 11, 12:16 PM EDT | Severe Thunderstorm Warning | RNK | 59 min |
| Jun 11, 1:48 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 11, 2:34 PM EDT | Special Weather Statement | RNK | 26 min |
| Jun 12, 1:48 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 18, 2:21 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jun 18, 2:57 PM EDT | Special Weather Statement | RNK | 63 min |
| Jun 21, 2:11 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Jun 21, 4:26 PM EDT | Severe Thunderstorm Warning | RNK | 49 min |
| Jun 21, 5:39 PM EDT | Severe Thunderstorm Warning | RNK | 66 min |
| Jun 21, 6:29 PM EDT | Severe Thunderstorm Warning | RNK | 61 min |
| Jun 21, 10:15 PM EDT | Severe Thunderstorm Warning | RNK | 60 min |
| Jun 21, 11:16 PM EDT | Special Weather Statement | RNK | 59 min |
| Jun 27, 8:05 PM EDT | Special Weather Statement | RNK | 55 min |
| Jun 28, 2:44 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Jul 3, 3:57 PM EDT | Severe Thunderstorm Warning | RNK | 63 min |
| Jul 3, 4:44 PM EDT | Severe Thunderstorm Warning | RNK | 61 min |
| Jul 3, 5:43 PM EDT | Severe Thunderstorm Warning | RNK | 62 min |
| Jul 4, 12:10 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jul 4, 12:50 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 4, 2:48 PM EDT | Flash Flood Watch | RNK | 4 hr |
| Jul 4, 3:12 PM EDT | Special Weather Statement | RNK | 63 min |
| Jul 5, 3:38 AM EDT | Dense Fog Advisory | RNK | 5 hr |
| Jul 8, 3:58 AM EDT | Flash Flood Watch | RNK | 19 hr |
| Jul 11, 8:32 PM EDT | Special Weather Statement | RNK | 73 min |
| Jul 22, 1:20 PM EDT | Severe Thunderstorm Warning | RNK | 40 min |
| Jul 22, 5:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 11:46 AM EDT | Severe Thunderstorm Warning | RNK | 59 min |
| Jul 30, 6:44 PM EDT | Special Weather Statement | RNK | 31 min |
| Aug 1, 5:45 AM EDT | Dense Fog Advisory | RNK | 3 hr |
| Aug 13, 4:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Aug 13, 6:01 PM EDT | Special Weather Statement | RNK | 29 min |
| Aug 14, 2:13 AM EDT | Special Weather Statement | RNK | 62 min |
| Aug 14, 1:50 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Aug 14, 2:07 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 18, 2:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 18, 4:37 PM EDT | Severe Thunderstorm Warning | RNK | 53 min |
| Aug 18, 5:31 PM EDT | Special Weather Statement | RNK | 59 min |
| Aug 20, 5:17 PM EDT | Special Weather Statement | RNK | 58 min |
| Sep 2, 2:31 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Sep 2, 4:53 PM EDT | Special Weather Statement | RNK | 67 min |
| Sep 2, 5:50 PM EDT | Severe Thunderstorm Warning | RNK | 55 min |
| Sep 2, 6:37 PM EDT | Special Weather Statement | RNK | 53 min |
| Sep 2, 7:44 PM EDT | Special Weather Statement | RNK | 61 min |
| Sep 3, 1:29 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Sep 3, 4:08 PM EDT | Special Weather Statement | RNK | 52 min |
| Sep 3, 5:00 PM EDT | Severe Thunderstorm Warning | RNK | 60 min |
| Sep 3, 5:19 PM EDT | Severe Thunderstorm Warning | RNK | 56 min |
| Sep 3, 6:02 PM EDT | Special Weather Statement | RNK | 43 min |
| Sep 3, 6:21 PM EDT | Flash Flood Warning | RNK | 3 hr |
| Sep 4, 3:07 AM EDT | Dense Fog Advisory | RNK | 6 hr |
| Sep 4, 3:15 PM EDT | Mesoscale Discussion | SPC | 60 min |
| Sep 4, 3:25 PM EDT | Flash Flood Watch | RNK | 60 hr |
| Sep 5, 5:52 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Sep 5, 7:14 PM EDT | Tornado Warning | RNK | 31 min |
| Sep 5, 7:40 PM EDT | Tornado Warning | RNK | 35 min |
| Sep 6, 3:38 AM EDT | Areal Flood Warning | RNK | 18 hr |
| Sep 22, 6:51 AM EDT | Dense Fog Advisory | RNK | 2 hr |
| Sep 25, 3:48 AM EDT | Special Weather Statement | RNK | 57 min |
| Sep 25, 4:14 AM EDT | Flash Flood Warning | RNK | 3 hr |
| Sep 30, 4:18 PM EDT | Wind Advisory | RNK | 36 hr |
| Oct 19, 4:09 AM EDT | Wind Advisory | RNK | 35 hr |
| Oct 20, 3:10 PM EDT | Freeze Watch | RNK | 23 hr |
| Oct 21, 2:21 PM EDT | Freeze Warning | RNK | 20 hr |
| Nov 22, 8:21 PM EST | Special Weather Statement | RNK | 54 min |
| Nov 23, 3:17 AM EST | Wind Advisory | RNK | 19 hr |
| Nov 27, 3:00 PM EST | Wind Advisory | RNK | 39 hr |
| Nov 28, 11:42 AM EST | Flood Watch | RNK | 18 hr |
| Nov 28, 9:42 PM EST | Special Weather Statement | RNK | 63 min |
| Dec 7, 4:47 AM EST | Special Weather Statement | RNK | 88 min |
| Dec 7, 2:25 PM EST | Wind Advisory | RNK | 11 hr |
| Dec 22, 11:39 PM EST | Special Weather Statement | RNK | 51 min |
| Dec 26, 2:37 PM EST | Wind Advisory | RNK | 19 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 | 53 |
| Tornado Warning | 11 |
| Severe Thunderstorm Watch | 14 |
| Tornado Watch | 6 |
| Mesoscale Discussion | 39 |
| Special Weather Statement | 33 |
| Flooding | |
| Areal Flood Warning | 4 |
| Flash Flood Warning | 9 |
| Flash Flood Watch | 8 |
| Flood Watch | 3 |
| Areal Flood Advisory | 2 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 6 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Frost Advisory | 1 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 14 |
| Fire | |
| Red Flag Warning | 2 |
| Fire Weather Watch | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
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.