Alert archive / North Carolina / Rockingham County
Weather alerts in Rockingham County, North Carolina, 2021
129 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Rockingham County and its neighbors
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Alerts
- 129
- Warnings
- 29
- Watches
- 16
- Advisories
- 25
- Busiest month
- July25 alerts
- Busiest day
- July 17, 202110 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 2 tornado warnings covering Rockingham County in 2021 had a tornado report inside them.
Rockingham County, 2021
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 17 | 16 | 6% | 9 | 89% | 16 min |
| Flash flood warnings | 2 | 1 | 50% | 2 | 100% | 59 min |
Each office's whole area, 2021
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Blacksburg, VA: tornado warnings | 30 | 1 | 97% | 2 | 50% | 1 min |
| NWS Blacksburg, VA: severe thunderstorm warnings | 221 | 165 | 25% | 522 | 74% | 20 min |
| NWS Blacksburg, VA: flash flood warnings | 42 | 14 | 67% | 51 | 61% | 107 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 2, 7:50 PM EST | Dense Fog Advisory | RNK | 8 hr |
| Jan 7, 4:10 AM EST | Winter Weather Advisory | RNK | 40 hr |
| Jan 15, 6:39 PM EST | Dense Fog Advisory | RNK | 7 hr |
| Jan 16, 1:09 AM EST | Freezing Fog Advisory | RNK | 8 hr |
| Jan 26, 7:40 PM EST | Dense Fog Advisory | RNK | 11 hr |
| Jan 27, 4:32 AM EST | Winter Weather Advisory | RNK | 31 hr |
| Jan 29, 3:12 PM EST | Winter Storm Watch | RNK | 14 hr |
| Jan 30, 5:19 AM EST | Winter Storm Warning | RNK | 33 hr |
| Jan 31, 2:14 PM EST | Winter Weather Advisory | RNK | 47 hr |
| Feb 5, 11:53 AM EST | Winter Storm Watch | RNK | 16 hr |
| Feb 6, 4:16 AM EST | Winter Weather Advisory | RNK | 32 hr |
| Feb 11, 4:05 AM EST | Winter Weather Advisory | RNK | 31 hr |
| Feb 12, 3:47 AM EST | Winter Storm Warning | RNK | 42 hr |
| Feb 12, 3:47 AM EST | Winter Weather Advisory | RNK | 56 hr |
| Feb 13, 2:21 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 16, 5:07 AM EST | Winter Storm Watch | RNK | 23 hr |
| Feb 17, 4:25 AM EST | Winter Storm Warning | RNK | 47 hr |
| Feb 18, 4:28 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 18, 10:23 AM EST | Mesoscale Discussion | SPC | 3 hr |
| Feb 18, 11:51 AM EST | Winter Weather Advisory | RNK | 22 hr |
| Mar 18, 4:15 PM EDT | Special Weather Statement | RNK | 30 min |
| Mar 18, 4:44 PM EDT | Special Weather Statement | RNK | 31 min |
| Mar 18, 5:15 PM EDT | Special Weather Statement | RNK | 30 min |
| Mar 18, 5:32 PM EDT | Severe Thunderstorm Warning | RNK | 58 min |
| Mar 18, 5:37 PM EDT | Tornado Warning | RNK | 23 min |
| Mar 18, 5:57 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Mar 24, 2:18 AM EDT | Dense Fog Advisory | RNK | 7 hr |
| Mar 25, 1:18 AM EDT | Dense Fog Advisory | RNK | 9 hr |
| Mar 27, 1:39 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Mar 27, 2:03 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Mar 27, 2:56 PM EDT | Severe Thunderstorm Warning | RNK | 64 min |
| Mar 27, 11:29 PM EDT | Special Weather Statement | RNK | 31 min |
| Mar 28, 12:05 AM EDT | Special Weather Statement | RNK | 25 min |
| Mar 28, 7:06 PM EDT | Special Weather Statement | RNK | 54 min |
| Mar 31, 12:16 PM EDT | Special Weather Statement | RNK | 29 min |
| Mar 31, 12:47 PM EDT | Special Weather Statement | RNK | 28 min |
| Apr 9, 3:38 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 9, 6:00 PM EDT | Special Weather Statement | RNK | 45 min |
| Apr 9, 6:23 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Apr 9, 9:07 PM EDT | Special Weather Statement | RNK | 38 min |
| Apr 9, 11:18 PM EDT | Areal Flood Advisory | RNK | 3 hr |
| Apr 9, 11:21 PM EDT | Special Weather Statement | RNK | 24 min |
| Apr 10, 11:10 PM EDT | Special Weather Statement | RNK | 35 min |
| Apr 14, 4:24 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 20, 2:52 PM EDT | Fire Weather Watch | RNK | 13 hr |
| Apr 21, 3:39 AM EDT | Freeze Warning | RNK | 29 hr |
| Apr 21, 3:49 AM EDT | Red Flag Warning | RNK | 16 hr |
| Apr 22, 3:27 AM EDT | Freeze Watch | RNK | 8 hr |
| Apr 22, 3:27 AM EDT | Freeze Warning | RNK | 30 hr |
| Apr 29, 2:46 PM EDT | Fire Weather Watch | RNK | 16 hr |
| Apr 30, 6:41 AM EDT | Red Flag Warning | RNK | 13 hr |
| May 4, 1:04 PM EDT | Mesoscale Discussion | SPC | 56 min |
| May 4, 3:23 PM EDT | Special Weather Statement | RNK | 37 min |
| May 10, 2:45 PM EDT | Special Weather Statement | RNK | 30 min |
| Jun 3, 6:05 PM EDT | Special Weather Statement | RNK | 25 min |
| Jun 3, 9:56 PM EDT | Special Weather Statement | RNK | 34 min |
| Jun 7, 6:48 PM EDT | Special Weather Statement | RNK | 57 min |
| Jun 7, 7:07 PM EDT | Areal Flood Advisory | RNK | 4 hr |
| Jun 11, 12:56 PM EDT | Flash Flood Warning | RNK | 3 hr |
| Jun 11, 1:46 PM EDT | Severe Thunderstorm Warning | RNK | 40 min |
| Jun 11, 9:27 PM EDT | Special Weather Statement | RNK | 33 min |
| Jun 13, 9:58 PM EDT | Severe Thunderstorm Warning | RNK | 61 min |
| Jun 13, 11:01 PM EDT | Areal Flood Advisory | RNK | 119 min |
| Jun 14, 3:01 PM EDT | Severe Thunderstorm Warning | RNK | 59 min |
| Jul 2, 1:38 AM EDT | Areal Flood Advisory | RNK | 3 hr |
| Jul 7, 3:02 PM EDT | Flash Flood Watch | RNK | 28 hr |
| Jul 11, 2:46 PM EDT | Severe Thunderstorm Warning | RNK | 31 min |
| Jul 11, 3:29 PM EDT | Areal Flood Advisory | RNK | 87 min |
| Jul 11, 7:11 PM EDT | Areal Flood Advisory | RNK | 98 min |
| Jul 15, 3:39 PM EDT | Special Weather Statement | RNK | 36 min |
| Jul 17, 1:15 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 17, 2:56 PM EDT | Severe Thunderstorm Warning | RNK | 49 min |
| Jul 17, 3:42 PM EDT | Special Weather Statement | RNK | 48 min |
| Jul 17, 3:48 PM EDT | Severe Thunderstorm Warning | RNK | 57 min |
| Jul 17, 3:52 PM EDT | Areal Flood Advisory | RNK | 3 hr |
| Jul 17, 4:00 PM EDT | Severe Thunderstorm Warning | RNK | 60 min |
| Jul 17, 4:11 PM EDT | Flash Flood Warning | RNK | 3 hr |
| Jul 17, 5:00 PM EDT | Severe Thunderstorm Warning | RNK | 60 min |
| Jul 17, 6:50 PM EDT | Areal Flood Advisory | RNK | 7 hr |
| Jul 17, 7:44 PM EDT | Severe Thunderstorm Warning | RNK | 61 min |
| Jul 17, 8:14 PM EDT | Severe Thunderstorm Warning | RNK | 41 min |
| Jul 17, 8:42 PM EDT | Severe Thunderstorm Warning | RNK | 63 min |
| Jul 17, 9:18 PM EDT | Severe Thunderstorm Warning | RNK | 57 min |
| Jul 18, 5:06 PM EDT | Special Weather Statement | RNK | 24 min |
| Jul 18, 5:30 PM EDT | Special Weather Statement | RNK | 30 min |
| Jul 25, 3:42 PM EDT | Special Weather Statement | RNK | 33 min |
| Jul 26, 12:58 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 26, 1:39 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 26, 3:29 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 1, 6:29 AM EDT | Mesoscale Discussion | SPC | 91 min |
| Aug 8, 2:01 AM EDT | Dense Fog Advisory | RNK | 7 hr |
| Aug 10, 3:37 PM EDT | Severe Thunderstorm Warning | RNK | 53 min |
| Aug 11, 2:53 PM EDT | Severe Thunderstorm Warning | RNK | 67 min |
| Aug 12, 2:57 PM EDT | Severe Thunderstorm Warning | RNK | 51 min |
| Aug 12, 3:53 PM EDT | Special Weather Statement | RNK | 37 min |
| Aug 13, 11:43 PM EDT | Special Weather Statement | RNK | 32 min |
| Aug 14, 12:13 AM EDT | Special Weather Statement | RNK | 32 min |
| Aug 14, 1:10 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 14, 5:14 PM EDT | Special Weather Statement | RNK | 31 min |
| Aug 14, 5:49 PM EDT | Special Weather Statement | RNK | 26 min |
| Aug 14, 5:53 PM EDT | Areal Flood Advisory | RNK | 3 hr |
| Aug 14, 6:17 PM EDT | Special Weather Statement | RNK | 28 min |
| Aug 15, 8:46 PM EDT | Special Weather Statement | RNK | 29 min |
| Aug 15, 9:15 PM EDT | Special Weather Statement | RNK | 30 min |
| Aug 17, 1:06 PM EDT | Tornado Watch | SPC | 5 hr |
| Aug 17, 1:58 PM EDT | Special Weather Statement | RNK | 32 min |
| Aug 17, 2:43 PM EDT | Tornado Warning | RNK | 32 min |
| Aug 17, 5:55 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Aug 17, 6:28 PM EDT | Tornado Watch | SPC | 10 hr |
| Aug 17, 10:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Aug 20, 6:39 PM EDT | Special Weather Statement | RNK | 36 min |
| Aug 31, 7:36 PM EDT | Tornado Watch | SPC | 7 hr |
| Sep 8, 10:00 AM EDT | Special Weather Statement | RNK | 60 min |
| Sep 21, 5:59 AM EDT | Flash Flood Watch | RNK | 41 hr |
| Sep 22, 2:44 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Oct 4, 2:01 PM EDT | Special Weather Statement | RNK | 59 min |
| Oct 5, 5:40 PM EDT | Special Weather Statement | RNK | 35 min |
| Oct 25, 3:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Oct 25, 6:26 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Oct 25, 8:13 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Nov 3, 1:50 PM EDT | Freeze Watch | RNK | 14 hr |
| Nov 4, 4:02 AM EDT | Freeze Warning | RNK | 30 hr |
| Nov 12, 1:56 AM EST | Special Weather Statement | RNK | 49 min |
| Dec 11, 3:57 PM EST | Special Weather Statement | RNK | 33 min |
| Dec 11, 4:31 PM EST | Special Weather Statement | RNK | 29 min |
| Dec 11, 5:00 PM EST | Special Weather Statement | RNK | 30 min |
| Dec 11, 5:30 PM EST | Special Weather Statement | RNK | 30 min |
| Dec 18, 4:01 AM EST | Dense Fog Advisory | RNK | 6 hr |
| Dec 30, 10:30 PM EST | Dense Fog Advisory | RNK | 12 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 archive20202022
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.