Alert archive / North Carolina / Surry County
Weather alerts in Surry County, North Carolina, 2012
191 weather alerts in 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Surry County and its neighbors
Each county as a circle sized by its count in 2012. Tap one for its archive.
- Alerts
- 191
- Warnings
- 53
- Watches
- 25
- Advisories
- 27
- Busiest month
- July44 alerts
- Busiest day
- March 24, 201215 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Surry County, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 41 | 32 | 22% | 29 | 97% | 20 min |
| Flash flood warnings | 4 | 2 | 50% | 6 | 33% | 107 min |
Each office's whole area, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Blacksburg, VA: tornado warnings | 17 | 0 | 100% | 0 | ||
| NWS Blacksburg, VA: severe thunderstorm warnings | 359 | 271 | 25% | 793 | 83% | 23 min |
| NWS Blacksburg, VA: flash flood warnings | 50 | 27 | 46% | 60 | 77% | 56 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 9, 10:34 PM EST | Dense Fog Advisory | RNK | 10 hr |
| Jan 10, 2:54 PM EST | Flood Watch | RNK | 30 hr |
| Jan 11, 7:43 PM EST | Special Weather Statement | RNK | 62 min |
| Jan 15, 12:34 AM EST | Special Weather Statement | RNK | 116 min |
| Jan 17, 5:42 PM EST | Special Weather Statement | RNK | 63 min |
| Jan 17, 6:39 PM EST | Special Weather Statement | RNK | 51 min |
| Jan 22, 4:23 AM EST | Dense Fog Advisory | RNK | 7 hr |
| Jan 24, 1:29 AM EST | Dense Fog Advisory | RNK | 10 hr |
| Jan 27, 12:39 AM EST | Special Weather Statement | RNK | 51 min |
| Jan 27, 1:36 AM EST | Special Weather Statement | RNK | 54 min |
| Jan 27, 2:40 AM EST | Special Weather Statement | RNK | 110 min |
| Feb 2, 4:07 AM EST | Dense Fog Advisory | RNK | 5 hr |
| Feb 11, 4:15 AM EST | Wind Advisory | RNK | 27 hr |
| Feb 18, 4:36 PM EST | Winter Storm Warning | RNK | 34 hr |
| Feb 19, 12:47 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 22, 10:00 PM EST | Special Weather Statement | RNK | 60 min |
| Feb 23, 2:26 PM EST | Wind Advisory | RNK | 34 hr |
| Feb 24, 9:05 AM EST | Mesoscale Discussion | SPC | 25 min |
| Feb 24, 12:00 PM EST | Mesoscale Discussion | SPC | 60 min |
| Feb 24, 12:41 PM EST | Severe Thunderstorm Warning | RNK | 34 min |
| Feb 24, 3:24 PM EST | Mesoscale Discussion | SPC | 66 min |
| Feb 24, 3:44 PM EST | Fire Weather Watch | RNK | 14 hr |
| Feb 25, 12:00 AM EST | Wind Advisory | RNK | 18 hr |
| Feb 25, 6:06 AM EST | Red Flag Warning | RNK | 13 hr |
| Mar 1, 12:20 AM EST | Mesoscale Discussion | SPC | 85 min |
| Mar 4, 2:22 PM EST | Winter Weather Advisory | RNK | 22 hr |
| Mar 15, 1:38 PM EDT | Special Weather Statement | RNK | 67 min |
| Mar 15, 2:29 PM EDT | Special Weather Statement | RNK | 61 min |
| Mar 20, 3:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Mar 21, 1:22 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Mar 23, 5:51 PM EDT | Special Weather Statement | RNK | 24 min |
| Mar 24, 12:03 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Mar 24, 12:46 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Mar 24, 2:00 PM EDT | Severe Thunderstorm Warning | RNK | 60 min |
| Mar 24, 2:31 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Mar 24, 2:34 PM EDT | Severe Thunderstorm Warning | RNK | 56 min |
| Mar 24, 2:44 PM EDT | Severe Thunderstorm Warning | RNK | 61 min |
| Mar 24, 2:52 PM EDT | Flash Flood Warning | RNK | 6 hr |
| Mar 24, 2:54 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Mar 24, 3:26 PM EDT | Severe Thunderstorm Warning | RNK | 64 min |
| Mar 24, 3:38 PM EDT | Tornado Watch | SPC | 7 hr |
| Mar 24, 4:08 PM EDT | Severe Thunderstorm Warning | RNK | 67 min |
| Mar 24, 4:16 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Mar 24, 4:31 PM EDT | Severe Thunderstorm Warning | RNK | 44 min |
| Mar 24, 5:35 PM EDT | Severe Thunderstorm Warning | RNK | 55 min |
| Mar 24, 6:05 PM EDT | Flash Flood Warning | RNK | 4 hr |
| Mar 24, 8:43 PM EDT | Areal Flood Advisory | RNK | 3 hr |
| Mar 24, 10:03 PM EDT | Areal Flood Advisory | RNK | 103 min |
| Mar 25, 6:50 AM EDT | Flash Flood Watch | RNK | 14 hr |
| Mar 25, 11:09 AM EDT | Special Weather Statement | RNK | 111 min |
| Apr 3, 2:31 PM EDT | Special Weather Statement | RNK | 59 min |
| Apr 3, 5:38 PM EDT | Special Weather Statement | RNK | 67 min |
| Apr 3, 6:36 PM EDT | Special Weather Statement | RNK | 54 min |
| Apr 4, 1:31 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Apr 6, 3:37 AM EDT | Frost Advisory | RNK | 30 hr |
| Apr 8, 7:09 PM EDT | Fire Weather Watch | RNK | 16 hr |
| Apr 8, 7:09 PM EDT | Red Flag Warning | RNK | 25 hr |
| Apr 9, 10:51 AM EDT | Fire Weather Watch | RNK | 16 hr |
| Apr 9, 8:51 PM EDT | Red Flag Warning | RNK | 23 hr |
| Apr 10, 3:52 PM EDT | Freeze Watch | RNK | 23 hr |
| Apr 11, 3:59 AM EDT | Red Flag Warning | RNK | 16 hr |
| Apr 11, 3:13 PM EDT | Freeze Warning | RNK | 18 hr |
| Apr 12, 8:49 PM EDT | Frost Advisory | RNK | 12 hr |
| Apr 21, 3:21 PM EDT | Special Weather Statement | RNK | 54 min |
| Apr 26, 1:15 AM EDT | Special Weather Statement | RNK | 15 min |
| Apr 26, 8:47 AM EDT | Mesoscale Discussion | SPC | 88 min |
| Apr 26, 9:49 AM EDT | Special Weather Statement | RNK | 41 min |
| Apr 30, 10:03 PM EDT | Severe Thunderstorm Warning | RNK | 42 min |
| Apr 30, 10:49 PM EDT | Severe Thunderstorm Warning | RNK | 56 min |
| May 1, 12:43 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 1, 2:30 PM EDT | Special Weather Statement | RNK | 30 min |
| May 1, 2:37 PM EDT | Severe Thunderstorm Warning | RNK | 43 min |
| May 1, 3:12 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 1, 3:18 PM EDT | Severe Thunderstorm Warning | RNK | 57 min |
| May 1, 4:11 PM EDT | Severe Thunderstorm Warning | RNK | 35 min |
| May 1, 5:44 PM EDT | Special Weather Statement | RNK | 61 min |
| May 1, 6:18 PM EDT | Severe Thunderstorm Warning | RNK | 35 min |
| May 8, 10:48 PM EDT | Flash Flood Warning | RNK | 4 hr |
| May 9, 12:52 PM EDT | Special Weather Statement | RNK | 53 min |
| May 13, 4:14 AM EDT | Flash Flood Watch | RNK | 34 hr |
| May 14, 6:20 PM EDT | Flash Flood Watch | RNK | 11 hr |
| May 15, 5:39 AM EDT | Flash Flood Watch | RNK | 17 hr |
| May 15, 6:19 AM EDT | Dense Fog Advisory | RNK | 4 hr |
| May 15, 2:08 PM EDT | Mesoscale Discussion | SPC | 67 min |
| May 15, 5:32 PM EDT | Special Weather Statement | RNK | 58 min |
| May 15, 6:29 PM EDT | Severe Thunderstorm Warning | RNK | 33 min |
| May 16, 3:17 AM EDT | Dense Fog Advisory | RNK | 7 hr |
| May 21, 4:54 PM EDT | Severe Thunderstorm Warning | RNK | 66 min |
| May 22, 7:11 PM EDT | Special Weather Statement | RNK | 64 min |
| May 23, 6:04 PM EDT | Special Weather Statement | RNK | 56 min |
| May 29, 10:40 PM EDT | Special Weather Statement | RNK | 110 min |
| Jun 1, 1:28 PM EDT | Tornado Watch | SPC | 8 hr |
| Jun 1, 3:35 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Jun 12, 10:41 AM EDT | Flash Flood Watch | RNK | 13 hr |
| Jun 19, 3:17 PM EDT | Special Weather Statement | RNK | 28 min |
| Jun 22, 2:47 PM EDT | Severe Thunderstorm Warning | RNK | 73 min |
| Jun 24, 12:53 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 24, 7:10 PM EDT | Severe Thunderstorm Warning | RNK | 45 min |
| Jun 29, 3:33 PM EDT | Heat Advisory | RNK | 28 hr |
| Jun 29, 9:32 PM EDT | Severe Thunderstorm Warning | RNK | 73 min |
| Jun 29, 9:37 PM EDT | Severe Thunderstorm Warning | RNK | 53 min |
| Jun 30, 4:27 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 30, 4:53 PM EDT | Severe Thunderstorm Warning | RNK | 52 min |
| Jun 30, 5:43 PM EDT | Severe Thunderstorm Warning | RNK | 33 min |
| Jun 30, 7:39 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 30, 7:51 PM EDT | Special Weather Statement | RNK | 54 min |
| Jun 30, 8:14 PM EDT | Severe Thunderstorm Warning | RNK | 46 min |
| Jul 1, 9:27 AM EDT | Mesoscale Discussion | SPC | 63 min |
| Jul 1, 9:44 AM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 1, 11:38 AM EDT | Severe Thunderstorm Warning | RNK | 52 min |
| Jul 1, 11:38 AM EDT | Mesoscale Discussion | SPC | 97 min |
| Jul 1, 12:26 PM EDT | Severe Thunderstorm Warning | RNK | 45 min |
| Jul 1, 9:06 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 1, 11:57 PM EDT | Severe Thunderstorm Warning | RNK | 63 min |
| Jul 2, 12:39 AM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 2, 12:58 AM EDT | Severe Thunderstorm Warning | RNK | 62 min |
| Jul 3, 1:17 PM EDT | Severe Thunderstorm Warning | RNK | 58 min |
| Jul 3, 1:21 PM EDT | Flash Flood Warning | RNK | 5 hr |
| Jul 3, 1:49 PM EDT | Severe Thunderstorm Warning | RNK | 56 min |
| Jul 3, 2:38 PM EDT | Severe Thunderstorm Warning | RNK | 53 min |
| Jul 3, 6:23 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 5, 11:37 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 5, 12:15 PM EDT | Severe Thunderstorm Warning | RNK | 60 min |
| Jul 5, 2:57 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 5, 3:21 PM EDT | Severe Thunderstorm Warning | RNK | 84 min |
| Jul 8, 11:17 PM EDT | Special Weather Statement | RNK | 58 min |
| Jul 9, 12:20 AM EDT | Special Weather Statement | RNK | 25 min |
| Jul 9, 12:47 AM EDT | Special Weather Statement | RNK | 58 min |
| Jul 9, 1:15 AM EDT | Special Weather Statement | RNK | 30 min |
| Jul 9, 3:19 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 9, 5:53 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jul 9, 8:27 PM EDT | Special Weather Statement | RNK | 63 min |
| Jul 9, 8:31 PM EDT | Severe Thunderstorm Warning | RNK | 59 min |
| Jul 10, 12:18 PM EDT | Special Weather Statement | RNK | 57 min |
| Jul 13, 5:39 PM EDT | Special Weather Statement | RNK | 51 min |
| Jul 14, 11:52 AM EDT | Flash Flood Watch | RNK | 9 hr |
| Jul 15, 2:35 PM EDT | Special Weather Statement | RNK | 25 min |
| Jul 16, 7:51 PM EDT | Special Weather Statement | RNK | 54 min |
| Jul 16, 8:06 PM EDT | Severe Thunderstorm Warning | RNK | 69 min |
| Jul 20, 2:47 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 21, 2:17 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 22, 2:20 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 12:58 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 23, 1:04 PM EDT | Special Weather Statement | RNK | 56 min |
| Jul 23, 2:08 PM EDT | Severe Thunderstorm Warning | RNK | 67 min |
| Jul 24, 1:08 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 25, 3:11 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 27, 1:08 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Jul 27, 1:54 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 27, 4:52 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Aug 2, 1:48 AM EDT | Severe Thunderstorm Warning | RNK | 32 min |
| Aug 4, 10:32 PM EDT | Special Weather Statement | RNK | 58 min |
| Aug 5, 9:11 PM EDT | Special Weather Statement | RNK | 64 min |
| Aug 7, 5:43 PM EDT | Special Weather Statement | RNK | 32 min |
| Aug 8, 12:29 PM EDT | Severe Thunderstorm Warning | RNK | 34 min |
| Aug 8, 1:57 PM EDT | Severe Thunderstorm Warning | RNK | 63 min |
| Aug 9, 8:37 PM EDT | Special Weather Statement | RNK | 53 min |
| Aug 10, 7:31 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Aug 10, 10:23 PM EDT | Special Weather Statement | RNK | 37 min |
| Aug 11, 1:14 AM EDT | Areal Flood Advisory | RNK | 4 hr |
| Aug 20, 6:35 PM EDT | Special Weather Statement | RNK | 25 min |
| Aug 20, 7:58 PM EDT | Areal Flood Advisory | RNK | 3 hr |
| Aug 22, 3:08 PM EDT | Special Weather Statement | RNK | 22 min |
| Sep 1, 4:57 PM EDT | Special Weather Statement | RNK | 78 min |
| Sep 2, 4:57 PM EDT | Special Weather Statement | RNK | 48 min |
| Sep 2, 5:07 PM EDT | Severe Thunderstorm Warning | RNK | 53 min |
| Sep 3, 11:49 AM EDT | Flash Flood Watch | RNK | 9 hr |
| Sep 3, 4:52 PM EDT | Special Weather Statement | RNK | 53 min |
| Sep 3, 5:06 PM EDT | Severe Thunderstorm Warning | RNK | 84 min |
| Sep 3, 6:02 PM EDT | Areal Flood Advisory | RNK | 3 hr |
| Sep 6, 5:45 PM EDT | Special Weather Statement | RNK | 30 min |
| Sep 7, 5:08 AM EDT | Dense Fog Advisory | RNK | 4 hr |
| Sep 8, 12:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Sep 8, 1:26 PM EDT | Severe Thunderstorm Warning | RNK | 64 min |
| Sep 8, 1:48 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 8, 3:25 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Sep 17, 5:15 AM EDT | Flash Flood Watch | RNK | 34 hr |
| Sep 18, 7:39 AM EDT | Special Weather Statement | RNK | 51 min |
| Sep 18, 10:35 AM EDT | Special Weather Statement | RNK | 55 min |
| Sep 18, 11:36 AM EDT | Special Weather Statement | RNK | 54 min |
| Oct 21, 4:00 PM EDT | Frost Advisory | RNK | 17 hr |
| Oct 28, 3:35 AM EDT | High Wind Warning | RNK | 56 hr |
| Nov 2, 4:06 PM EDT | Frost Advisory | RNK | 17 hr |
| Nov 4, 3:54 PM EST | Frost Advisory | RNK | 16 hr |
| Dec 8, 2:51 AM EST | Dense Fog Advisory | RNK | 5 hr |
| Dec 9, 10:28 PM EST | Dense Fog Advisory | RNK | 10 hr |
| Dec 19, 3:08 PM EST | High Wind Watch | RNK | 14 hr |
| Dec 20, 5:17 AM EST | High Wind Warning | RNK | 58 hr |
| Dec 25, 3:02 PM EST | Wind Advisory | RNK | 22 hr |
| Dec 26, 3:48 PM EST | Wind Advisory | RNK | 21 hr |
| Dec 29, 6:15 AM EST | Wind Advisory | RNK | 30 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 | 41 |
| Severe Thunderstorm Watch | 9 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 35 |
| Special Weather Statement | 51 |
| Flooding | |
| Flash Flood Warning | 4 |
| Flash Flood Watch | 8 |
| Flood Watch | 1 |
| Areal Flood Advisory | 5 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Weather Advisory | 1 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Frost Advisory | 5 |
| Wind and dust | |
| High Wind Warning | 2 |
| High Wind Watch | 1 |
| Wind Advisory | 6 |
| Fire | |
| Red Flag Warning | 4 |
| Fire Weather Watch | 3 |
| Fog and smoke | |
| Dense Fog Advisory | 9 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20112013
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.