Alert archive / North Carolina / Surry County
Weather alerts in Surry County, North Carolina, 2017
132 weather alerts in 2017, 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 2017. Tap one for its archive.
- Alerts
- 132
- Warnings
- 26
- Watches
- 14
- Advisories
- 26
- Busiest month
- May31 alerts
- Busiest day
- March 1, 20176 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 3 tornado warnings covering Surry County in 2017 had a tornado report inside them.
Surry County, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 1 | 67% | 0 | ||
| Severe thunderstorm warnings | 15 | 14 | 7% | 7 | 43% | 18 min |
| Flash flood warnings | 1 | 0 | 100% | 0 |
Each office's whole area, 2017
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Blacksburg, VA: tornado warnings | 17 | 4 | 76% | 12 | 58% | 17 min |
| NWS Blacksburg, VA: severe thunderstorm warnings | 167 | 140 | 16% | 462 | 74% | 19 min |
| NWS Blacksburg, VA: flash flood warnings | 24 | 15 | 38% | 53 | 72% | 80 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 5, 2:56 PM EST | Winter Storm Watch | RNK | 13 hr |
| Jan 6, 3:54 AM EST | Winter Storm Warning | RNK | 34 hr |
| Jan 6, 3:47 PM EST | Wind Chill Advisory | RNK | 50 hr |
| Jan 6, 8:56 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 7, 3:18 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Jan 7, 2:24 PM EST | Winter Weather Advisory | RNK | 22 hr |
| Jan 8, 2:23 PM EST | Winter Weather Advisory | RNK | 46 hr |
| Jan 21, 3:57 AM EST | Dense Fog Advisory | RNK | 8 hr |
| Feb 8, 3:29 PM EST | Wind Advisory | RNK | 33 hr |
| Feb 12, 3:16 AM EST | Wind Advisory | RNK | 34 hr |
| Feb 22, 10:30 PM EST | Dense Fog Advisory | RNK | 12 hr |
| Mar 1, 9:44 AM EST | Mesoscale Discussion | SPC | 91 min |
| Mar 1, 10:38 AM EST | Severe Thunderstorm Watch | SPC | 4 hr |
| Mar 1, 12:25 PM EST | Mesoscale Discussion | SPC | 65 min |
| Mar 1, 3:02 PM EST | Severe Thunderstorm Watch | SPC | 7 hr |
| Mar 1, 3:39 PM EST | Special Weather Statement | RNK | 21 min |
| Mar 1, 4:05 PM EST | Special Weather Statement | RNK | 25 min |
| Mar 10, 2:36 PM EST | Winter Weather Advisory | RNK | 42 hr |
| Mar 18, 3:26 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Mar 27, 4:51 PM EDT | Special Weather Statement | RNK | 24 min |
| Mar 27, 5:35 PM EDT | Special Weather Statement | RNK | 25 min |
| Mar 27, 6:31 PM EDT | Special Weather Statement | RNK | 29 min |
| Mar 27, 6:35 PM EDT | Severe Thunderstorm Warning | RNK | 40 min |
| Mar 27, 7:09 PM EDT | Severe Thunderstorm Warning | RNK | 51 min |
| Mar 31, 6:52 AM EDT | Special Weather Statement | RNK | 53 min |
| Apr 5, 3:39 PM EDT | Wind Advisory | RNK | 48 hr |
| Apr 6, 12:51 AM EDT | Mesoscale Discussion | SPC | 114 min |
| Apr 6, 3:54 PM EDT | Freeze Watch | RNK | 23 hr |
| Apr 7, 3:17 PM EDT | Frost Advisory | RNK | 18 hr |
| Apr 8, 2:44 PM EDT | Frost Advisory | RNK | 18 hr |
| Apr 21, 2:13 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 21, 4:19 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Apr 22, 11:57 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 22, 2:22 PM EDT | Special Weather Statement | RNK | 23 min |
| Apr 22, 4:11 PM EDT | Flood Watch | RNK | 64 hr |
| Apr 23, 11:25 PM EDT | Areal Flood Advisory | RNK | 12 hr |
| Apr 24, 5:04 AM EDT | River Flood Warning | RNK | 29 hr |
| May 1, 4:01 PM EDT | Special Weather Statement | RNK | 59 min |
| May 1, 4:02 PM EDT | Mesoscale Discussion | SPC | 118 min |
| May 1, 4:53 PM EDT | Special Weather Statement | RNK | 52 min |
| May 4, 2:57 PM EDT | Flood Watch | RNK | 18 hr |
| May 4, 8:19 PM EDT | Special Weather Statement | RNK | 71 min |
| May 5, 2:16 AM EDT | Areal Flood Warning | RNK | 6 hr |
| May 9, 6:36 PM EDT | Severe Thunderstorm Warning | RNK | 54 min |
| May 9, 9:53 PM EDT | Severe Thunderstorm Warning | RNK | 52 min |
| May 11, 6:19 AM EDT | Flood Watch | RNK | 30 hr |
| May 11, 4:47 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 18, 8:17 PM EDT | Special Weather Statement | RNK | 58 min |
| May 19, 1:29 PM EDT | Special Weather Statement | RNK | 61 min |
| May 19, 1:50 PM EDT | Severe Thunderstorm Warning | RNK | 25 min |
| May 19, 2:20 PM EDT | Severe Thunderstorm Warning | RNK | 41 min |
| May 19, 2:24 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 19, 3:00 PM EDT | Severe Thunderstorm Warning | RNK | 60 min |
| May 20, 2:53 AM EDT | Special Weather Statement | RNK | 52 min |
| May 21, 4:39 AM EDT | Flash Flood Watch | RNK | 18 hr |
| May 23, 3:22 AM EDT | Flood Watch | RNK | 23 hr |
| May 24, 4:27 AM EDT | Flash Flood Watch | RNK | 20 hr |
| May 24, 3:13 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 24, 3:46 PM EDT | Tornado Watch | SPC | 6 hr |
| May 24, 4:07 PM EDT | Flash Flood Warning | RNK | 6 hr |
| May 24, 4:32 PM EDT | Severe Thunderstorm Warning | RNK | 58 min |
| May 24, 4:42 PM EDT | Tornado Warning | RNK | 33 min |
| May 27, 6:11 PM EDT | Mesoscale Discussion | SPC | 64 min |
| May 27, 6:55 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| May 27, 9:17 PM EDT | Special Weather Statement | RNK | 58 min |
| May 27, 10:46 PM EDT | Mesoscale Discussion | SPC | 89 min |
| May 30, 7:00 PM EDT | Special Weather Statement | RNK | 30 min |
| May 31, 6:10 PM EDT | Severe Thunderstorm Warning | RNK | 65 min |
| Jun 4, 3:15 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Jun 4, 3:42 PM EDT | Special Weather Statement | RNK | 63 min |
| Jun 13, 2:54 PM EDT | Special Weather Statement | RNK | 36 min |
| Jun 13, 6:08 PM EDT | Severe Thunderstorm Warning | RNK | 33 min |
| Jun 14, 1:17 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 15, 1:22 PM EDT | Special Weather Statement | RNK | 53 min |
| Jun 16, 1:27 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 16, 6:51 PM EDT | Areal Flood Advisory | RNK | 3 hr |
| Jun 18, 9:48 PM EDT | Special Weather Statement | RNK | 42 min |
| Jun 19, 4:59 PM EDT | Special Weather Statement | RNK | 61 min |
| Jun 24, 2:06 PM EDT | Special Weather Statement | RNK | 54 min |
| Jul 1, 3:29 PM EDT | Special Weather Statement | RNK | 46 min |
| Jul 1, 6:31 PM EDT | Special Weather Statement | RNK | 44 min |
| Jul 4, 3:54 PM EDT | Special Weather Statement | RNK | 66 min |
| Jul 4, 4:46 PM EDT | Areal Flood Advisory | RNK | 3 hr |
| Jul 6, 5:22 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jul 12, 4:58 PM EDT | Special Weather Statement | RNK | 32 min |
| Jul 14, 12:42 PM EDT | Special Weather Statement | RNK | 48 min |
| Jul 14, 1:57 PM EDT | Special Weather Statement | RNK | 33 min |
| Jul 14, 2:50 PM EDT | Special Weather Statement | RNK | 25 min |
| Jul 17, 8:36 PM EDT | Special Weather Statement | RNK | 54 min |
| Jul 18, 1:41 PM EDT | Special Weather Statement | RNK | 49 min |
| Jul 18, 1:54 PM EDT | Severe Thunderstorm Warning | RNK | 66 min |
| Jul 18, 2:31 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Jul 21, 3:46 PM EDT | Special Weather Statement | RNK | 59 min |
| Jul 22, 2:39 PM EDT | Special Weather Statement | RNK | 36 min |
| Jul 22, 3:19 PM EDT | Special Weather Statement | RNK | 26 min |
| Jul 22, 3:49 PM EDT | Special Weather Statement | RNK | 41 min |
| Jul 22, 4:06 PM EDT | Severe Thunderstorm Warning | RNK | 54 min |
| Jul 22, 4:13 PM EDT | Special Weather Statement | RNK | 17 min |
| Jul 23, 11:36 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 24, 12:36 AM EDT | Special Weather Statement | RNK | 54 min |
| Jul 27, 5:40 PM EDT | Special Weather Statement | RNK | 65 min |
| Aug 12, 8:50 PM EDT | Special Weather Statement | RNK | 55 min |
| Aug 18, 1:32 PM EDT | Special Weather Statement | RNK | 28 min |
| Aug 18, 4:05 PM EDT | Special Weather Statement | RNK | 40 min |
| Sep 1, 2:16 PM EDT | Special Weather Statement | RNK | 29 min |
| Sep 5, 3:36 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Sep 5, 3:55 PM EDT | Severe Thunderstorm Warning | RNK | 65 min |
| Sep 10, 3:08 PM EDT | Wind Advisory | RNK | 42 hr |
| Oct 8, 4:31 AM EDT | Wind Advisory | RNK | 29 hr |
| Oct 8, 10:40 PM EDT | Areal Flood Warning | RNK | 6 hr |
| Oct 8, 11:08 PM EDT | Areal Flood Advisory | RNK | 6 hr |
| Oct 9, 12:38 AM EDT | Areal Flood Warning | RNK | 6 hr |
| Oct 15, 5:14 AM EDT | Dense Fog Advisory | RNK | 6 hr |
| Oct 17, 4:03 AM EDT | Frost Advisory | RNK | 29 hr |
| Oct 23, 2:00 PM EDT | Tornado Watch | SPC | 8 hr |
| Oct 23, 4:33 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Oct 23, 5:23 PM EDT | Severe Thunderstorm Warning | RNK | 67 min |
| Oct 23, 5:26 PM EDT | Tornado Warning | RNK | 34 min |
| Oct 23, 5:47 PM EDT | Severe Thunderstorm Warning | RNK | 58 min |
| Oct 23, 5:55 PM EDT | Tornado Warning | RNK | 35 min |
| Oct 25, 3:00 PM EDT | Frost Advisory | RNK | 18 hr |
| Oct 26, 3:12 AM EDT | Frost Advisory | RNK | 30 hr |
| Oct 28, 3:49 PM EDT | Wind Advisory | RNK | 42 hr |
| Oct 28, 10:34 PM EDT | Special Weather Statement | RNK | 56 min |
| Nov 9, 3:41 AM EST | Freeze Watch | RNK | 23 hr |
| Nov 10, 3:03 AM EST | Freeze Warning | RNK | 31 hr |
| Nov 13, 5:31 AM EST | Dense Fog Advisory | RNK | 4 hr |
| Dec 8, 4:15 AM EST | Winter Weather Advisory | RNK | 10 hr |
| Dec 8, 12:06 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 8, 2:34 PM EST | Winter Storm Warning | RNK | 25 hr |
| Dec 9, 3:47 PM EST | Winter Weather Advisory | RNK | 18 hr |
| Dec 24, 4:44 AM EST | Wind Advisory | RNK | 31 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20162018
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.