Alert archive / North Carolina / Surry County
Weather alerts in Surry County, North Carolina, 2020
190 weather alerts in 2020, 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 2020. Tap one for its archive.
- Alerts
- 190
- Warnings
- 43
- Watches
- 22
- Advisories
- 58
- Busiest month
- August45 alerts
- Busiest day
- April 13, 202010 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 Surry County in 2020 had a tornado report inside them.
Surry County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 15 | 11 | 27% | 10 | 80% | 27 min |
| Flash flood warnings | 8 | 7 | 13% | 13 | 69% | 52 min |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Blacksburg, VA: tornado warnings | 11 | 0 | 100% | 1 | 0% | |
| NWS Blacksburg, VA: severe thunderstorm warnings | 175 | 134 | 23% | 447 | 74% | 20 min |
| NWS Blacksburg, VA: flash flood warnings | 81 | 53 | 35% | 206 | 68% | 95 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 4, 3:42 AM EST | Wind Advisory | RNK | 30 hr |
| Jan 7, 2:07 PM EST | Wind Advisory | RNK | 28 hr |
| Jan 10, 2:43 PM EST | Wind Advisory | RNK | 37 hr |
| Jan 11, 7:37 PM EST | Severe Thunderstorm Watch | SPC | 5 hr |
| Jan 11, 9:07 PM EST | Severe Thunderstorm Warning | RNK | 53 min |
| Jan 11, 9:43 PM EST | Severe Thunderstorm Warning | RNK | 62 min |
| Jan 15, 2:30 PM EST | Wind Advisory | RNK | 34 hr |
| Jan 17, 3:53 AM EST | Winter Weather Advisory | RNK | 35 hr |
| Jan 25, 12:16 AM EST | Dense Fog Advisory | RNK | 5 hr |
| Feb 2, 9:15 AM EST | Wind Advisory | RNK | 15 hr |
| Feb 5, 4:46 AM EST | Flood Watch | RNK | 49 hr |
| Feb 6, 9:36 AM EST | River Flood Warning | RNK | 40 hr |
| Feb 6, 10:57 AM EST | Severe Thunderstorm Warning | RNK | 48 min |
| Feb 6, 11:01 AM EST | Tornado Watch | SPC | 2 hr |
| Feb 6, 11:53 AM EST | Flash Flood Warning | RNK | 6 hr |
| Feb 6, 5:24 PM EST | Areal Flood Warning | RNK | 6 hr |
| Feb 6, 9:40 PM EST | Wind Advisory | RNK | 20 hr |
| Feb 19, 3:00 PM EST | Winter Weather Advisory | RNK | 31 hr |
| Feb 26, 3:36 AM EST | Dense Fog Advisory | RNK | 5 hr |
| Feb 29, 2:44 AM EST | Special Weather Statement | RNK | 61 min |
| Apr 8, 1:10 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 9, 3:36 AM EDT | Mesoscale Discussion | SPC | 84 min |
| Apr 9, 3:48 AM EDT | Special Weather Statement | RNK | 57 min |
| Apr 9, 4:21 AM EDT | Special Weather Statement | RNK | 54 min |
| Apr 10, 11:15 AM EDT | Red Flag Warning | RNK | 7 hr |
| Apr 10, 2:31 PM EDT | Freeze Warning | RNK | 18 hr |
| Apr 12, 4:09 AM EDT | Flash Flood Watch | RNK | 27 hr |
| Apr 12, 2:18 PM EDT | Wind Advisory | RNK | 26 hr |
| Apr 12, 11:37 PM EDT | Special Weather Statement | RNK | 8 min |
| Apr 12, 11:50 PM EDT | Areal Flood Advisory | RNK | 12 hr |
| Apr 12, 11:59 PM EDT | Special Weather Statement | RNK | 31 min |
| Apr 13, 2:25 AM EDT | Special Weather Statement | RNK | 35 min |
| Apr 13, 2:42 AM EDT | Flash Flood Warning | RNK | 6 hr |
| Apr 13, 2:48 AM EDT | Severe Thunderstorm Warning | RNK | 27 min |
| Apr 13, 3:23 AM EDT | Special Weather Statement | RNK | 37 min |
| Apr 13, 4:06 AM EDT | Severe Thunderstorm Warning | RNK | 24 min |
| Apr 13, 4:12 AM EDT | Tornado Warning | RNK | 33 min |
| Apr 13, 8:47 AM EDT | Areal Flood Warning | RNK | 6 hr |
| Apr 15, 3:37 AM EDT | Frost Advisory | RNK | 28 hr |
| Apr 16, 3:00 PM EDT | Frost Advisory | RNK | 18 hr |
| Apr 18, 2:37 PM EDT | Frost Advisory | RNK | 18 hr |
| Apr 21, 3:25 AM EDT | Wind Advisory | RNK | 19 hr |
| Apr 29, 4:44 AM EDT | Flood Watch | RNK | 29 hr |
| Apr 29, 10:52 PM EDT | Areal Flood Advisory | RNK | 6 hr |
| May 8, 1:52 PM EDT | Freeze Watch | RNK | 13 hr |
| May 9, 3:00 AM EDT | Freeze Warning | RNK | 31 hr |
| May 18, 2:23 PM EDT | Flash Flood Watch | RNK | 3 days |
| May 20, 1:35 AM EDT | Areal Flood Advisory | RNK | 4 hr |
| May 20, 3:47 PM EDT | Areal Flood Warning | RNK | 9 hr |
| May 20, 7:30 PM EDT | Areal Flood Advisory | RNK | 5 hr |
| May 21, 12:29 AM EDT | Areal Flood Advisory | RNK | 9 hr |
| May 21, 4:17 AM EDT | Areal Flood Warning | RNK | 6 hr |
| May 21, 8:07 PM EDT | Flash Flood Watch | RNK | 23 hr |
| May 22, 3:50 AM EDT | Dense Fog Advisory | RNK | 5 hr |
| May 23, 2:56 AM EDT | Dense Fog Advisory | RNK | 6 hr |
| May 24, 1:44 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 24, 3:13 PM EDT | Special Weather Statement | RNK | 32 min |
| May 24, 3:41 PM EDT | Special Weather Statement | RNK | 64 min |
| May 24, 4:47 PM EDT | Special Weather Statement | RNK | 43 min |
| May 27, 3:25 AM EDT | Flash Flood Watch | RNK | 23 hr |
| May 27, 11:32 PM EDT | Areal Flood Advisory | RNK | 6 hr |
| May 28, 2:34 AM EDT | River Flood Warning | RNK | 9 hr |
| May 29, 6:50 PM EDT | Areal Flood Advisory | RNK | 4 hr |
| Jun 5, 5:08 AM EDT | Flash Flood Watch | RNK | 15 hr |
| Jun 10, 11:26 PM EDT | Special Weather Statement | RNK | 64 min |
| Jun 20, 11:57 AM EDT | Special Weather Statement | RNK | 33 min |
| Jun 20, 12:35 PM EDT | Special Weather Statement | RNK | 40 min |
| Jun 20, 12:44 PM EDT | Areal Flood Advisory | RNK | 3 hr |
| Jun 20, 12:47 PM EDT | Flash Flood Watch | RNK | 8 hr |
| Jun 20, 1:16 PM EDT | Special Weather Statement | RNK | 44 min |
| Jun 21, 11:18 PM EDT | Special Weather Statement | RNK | 27 min |
| Jun 21, 11:53 PM EDT | Special Weather Statement | RNK | 22 min |
| Jun 30, 1:42 PM EDT | Severe Thunderstorm Warning | RNK | 63 min |
| Jun 30, 2:16 PM EDT | Severe Thunderstorm Warning | RNK | 44 min |
| Jun 30, 2:56 PM EDT | Areal Flood Advisory | RNK | 4 hr |
| Jul 5, 4:29 PM EDT | Special Weather Statement | RNK | 31 min |
| Jul 10, 1:13 PM EDT | Special Weather Statement | RNK | 47 min |
| Jul 10, 6:11 PM EDT | Severe Thunderstorm Warning | RNK | 34 min |
| Jul 10, 6:20 PM EDT | Special Weather Statement | RNK | 40 min |
| Jul 10, 6:33 PM EDT | Severe Thunderstorm Warning | RNK | 57 min |
| Jul 10, 7:00 PM EDT | Severe Thunderstorm Warning | RNK | 60 min |
| Jul 10, 7:31 PM EDT | Severe Thunderstorm Warning | RNK | 45 min |
| Jul 17, 1:47 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jul 18, 12:43 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 19, 5:32 PM EDT | Severe Thunderstorm Warning | RNK | 58 min |
| Jul 20, 12:57 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 21, 1:00 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 1:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 23, 2:03 PM EDT | Special Weather Statement | RNK | 57 min |
| Jul 23, 2:33 PM EDT | Special Weather Statement | RNK | 42 min |
| Jul 24, 5:56 PM EDT | Special Weather Statement | RNK | 49 min |
| Jul 25, 2:16 PM EDT | Special Weather Statement | RNK | 29 min |
| Jul 27, 5:58 PM EDT | Special Weather Statement | RNK | 47 min |
| Jul 28, 12:41 PM EDT | Special Weather Statement | RNK | 19 min |
| Jul 28, 1:01 PM EDT | Special Weather Statement | RNK | 29 min |
| Jul 28, 1:33 PM EDT | Special Weather Statement | RNK | 27 min |
| Jul 28, 3:00 PM EDT | Special Weather Statement | RNK | 60 min |
| Jul 28, 3:19 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jul 29, 2:14 PM EDT | Special Weather Statement | RNK | 31 min |
| Jul 29, 2:49 PM EDT | Special Weather Statement | RNK | 26 min |
| Jul 31, 7:43 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 2, 4:55 AM EDT | Flash Flood Watch | RNK | 50 hr |
| Aug 2, 2:18 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Aug 2, 3:33 PM EDT | Special Weather Statement | RNK | 27 min |
| Aug 2, 4:04 PM EDT | Special Weather Statement | RNK | 26 min |
| Aug 3, 2:25 AM EDT | Special Weather Statement | RNK | 65 min |
| Aug 3, 3:32 AM EDT | Severe Thunderstorm Warning | RNK | 43 min |
| Aug 3, 4:34 AM EDT | Areal Flood Advisory | RNK | 4 hr |
| Aug 5, 1:37 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Aug 5, 7:22 PM EDT | Special Weather Statement | RNK | 23 min |
| Aug 5, 7:50 PM EDT | Special Weather Statement | RNK | 25 min |
| Aug 5, 8:15 PM EDT | Areal Flood Advisory | RNK | 3 hr |
| Aug 5, 10:28 PM EDT | Flash Flood Warning | RNK | 3 hr |
| Aug 6, 2:08 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 6, 5:30 PM EDT | Special Weather Statement | RNK | 30 min |
| Aug 6, 5:53 PM EDT | Severe Thunderstorm Warning | RNK | 52 min |
| Aug 6, 6:20 PM EDT | Flash Flood Warning | RNK | 3 hr |
| Aug 12, 1:15 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 12, 2:25 PM EDT | Areal Flood Advisory | RNK | 3 hr |
| Aug 12, 3:19 PM EDT | Areal Flood Advisory | RNK | 3 hr |
| Aug 13, 2:50 AM EDT | Flash Flood Watch | RNK | 21 hr |
| Aug 13, 2:39 PM EDT | Areal Flood Advisory | RNK | 2 hr |
| Aug 13, 2:48 PM EDT | Special Weather Statement | RNK | 27 min |
| Aug 13, 4:07 PM EDT | Flash Flood Warning | RNK | 5 hr |
| Aug 13, 11:49 PM EDT | Flash Flood Warning | RNK | 3 hr |
| Aug 14, 3:48 AM EDT | Flash Flood Watch | RNK | 41 hr |
| Aug 14, 2:38 PM EDT | Special Weather Statement | RNK | 22 min |
| Aug 14, 3:02 PM EDT | Special Weather Statement | RNK | 28 min |
| Aug 14, 4:22 PM EDT | Areal Flood Advisory | RNK | 3 hr |
| Aug 14, 10:41 PM EDT | Areal Flood Advisory | RNK | 4 hr |
| Aug 15, 4:36 PM EDT | Special Weather Statement | RNK | 24 min |
| Aug 15, 5:03 PM EDT | Special Weather Statement | RNK | 27 min |
| Aug 19, 10:41 PM EDT | Areal Flood Advisory | RNK | 109 min |
| Aug 21, 4:15 AM EDT | Flash Flood Watch | RNK | 26 hr |
| Aug 21, 7:22 AM EDT | Areal Flood Advisory | RNK | 3 hr |
| Aug 22, 5:45 PM EDT | Areal Flood Advisory | RNK | 3 hr |
| Aug 22, 6:08 PM EDT | Special Weather Statement | RNK | 37 min |
| Aug 24, 6:04 AM EDT | Dense Fog Advisory | RNK | 3 hr |
| Aug 24, 6:25 PM EDT | Areal Flood Advisory | RNK | 16 min |
| Aug 24, 6:41 PM EDT | Flash Flood Warning | RNK | 116 min |
| Aug 24, 8:37 PM EDT | Areal Flood Advisory | RNK | 68 min |
| Aug 24, 9:43 PM EDT | Areal Flood Advisory | RNK | 116 min |
| Aug 28, 6:54 PM EDT | Special Weather Statement | RNK | 36 min |
| Aug 28, 7:50 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 30, 7:55 PM EDT | Flood Watch | RNK | 26 hr |
| Aug 31, 3:10 AM EDT | Flash Flood Watch | RNK | 21 hr |
| Sep 11, 3:13 PM EDT | Special Weather Statement | RNK | 32 min |
| Sep 11, 9:24 PM EDT | Special Weather Statement | RNK | 51 min |
| Sep 14, 3:07 AM EDT | Dense Fog Advisory | RNK | 6 hr |
| Sep 16, 4:56 AM EDT | Flood Watch | RNK | 44 hr |
| Sep 29, 1:15 PM EDT | Special Weather Statement | RNK | 30 min |
| Sep 29, 1:46 PM EDT | Special Weather Statement | RNK | 44 min |
| Sep 29, 2:36 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 10, 4:13 AM EDT | Flood Watch | RNK | 44 hr |
| Oct 11, 4:43 AM EDT | Areal Flood Advisory | RNK | 4 hr |
| Oct 11, 8:40 AM EDT | Areal Flood Advisory | RNK | 6 hr |
| Oct 13, 2:32 AM EDT | Dense Fog Advisory | RNK | 6 hr |
| Oct 16, 2:17 PM EDT | Frost Advisory | RNK | 20 hr |
| Oct 17, 1:59 PM EDT | Frost Advisory | RNK | 19 hr |
| Oct 26, 8:53 PM EDT | Dense Fog Advisory | RNK | 13 hr |
| Oct 28, 5:33 AM EDT | Flood Watch | RNK | 32 hr |
| Oct 28, 2:09 PM EDT | Wind Advisory | RNK | 3 hr |
| Oct 28, 4:59 PM EDT | Tropical Storm Warning | RNK | 22 hr |
| Oct 29, 9:19 AM EDT | Areal Flood Advisory | RNK | 3 hr |
| Oct 29, 9:50 AM EDT | Severe Thunderstorm Warning | RNK | 85 min |
| Oct 29, 11:15 AM EDT | Flash Flood Warning | RNK | 2 hr |
| Oct 29, 11:35 AM EDT | River Flood Warning | RNK | 19 hr |
| Oct 29, 1:41 PM EDT | Areal Flood Warning | RNK | 6 hr |
| Oct 30, 12:33 AM EDT | Areal Flood Advisory | RNK | 3 hr |
| Oct 30, 2:32 PM EDT | Frost Advisory | RNK | 19 hr |
| Nov 1, 3:33 AM EST | Freeze Warning | RNK | 29 hr |
| Nov 2, 1:49 PM EST | Freeze Warning | RNK | 17 hr |
| Nov 10, 1:51 PM EST | Flood Watch | RNK | 48 hr |
| Nov 11, 6:49 AM EST | Areal Flood Advisory | RNK | 4 hr |
| Nov 11, 11:13 AM EST | Areal Flood Advisory | RNK | 3 hr |
| Nov 11, 4:42 PM EST | Areal Flood Advisory | RNK | 5 hr |
| Nov 12, 3:43 AM EST | Areal Flood Warning | RNK | 14 hr |
| Nov 12, 5:03 AM EST | Flash Flood Warning | RNK | 6 hr |
| Nov 12, 7:37 AM EST | River Flood Warning | RNK | 20 hr |
| Nov 12, 5:14 PM EST | Areal Flood Warning | RNK | 5 hr |
| Nov 12, 9:40 PM EST | Areal Flood Warning | RNK | 12 hr |
| Nov 26, 8:43 PM EST | Dense Fog Advisory | RNK | 12 hr |
| Nov 30, 4:09 AM EST | Special Weather Statement | RNK | 36 min |
| Dec 15, 4:35 AM EST | Winter Weather Advisory | RNK | 41 hr |
| Dec 16, 6:36 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 16, 7:24 AM EST | Special Weather Statement | RNK | 111 min |
| Dec 17, 1:04 AM EST | Dense Fog Advisory | RNK | 9 hr |
| Dec 21, 5:05 AM EST | Wind Advisory | RNK | 31 hr |
| Dec 24, 7:31 PM EST | Special Weather Statement | RNK | 89 min |
| Dec 24, 8:55 PM EST | Special Weather Statement | RNK | 80 min |
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 | 15 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 2 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 16 |
| Special Weather Statement | 51 |
| Flooding | |
| Areal Flood Warning | 8 |
| Flash Flood Warning | 9 |
| River Flood Warning | 4 |
| Flash Flood Watch | 11 |
| Flood Watch | 7 |
| Areal Flood Advisory | 29 |
| Winter | |
| Winter Weather Advisory | 3 |
| Cold | |
| Freeze Warning | 4 |
| Freeze Watch | 1 |
| Frost Advisory | 6 |
| Wind and dust | |
| Wind Advisory | 10 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 10 |
| Tropical | |
| Tropical Storm Warning | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20192021
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.