Alert archive / Virginia / Henry County
Weather alerts in Henry County, Virginia, 2022
149 weather alerts in 2022, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Henry County and its neighbors
Each county as a circle sized by its count in 2022. Tap one for its archive.
- Alerts
- 149
- Warnings
- 38
- Watches
- 14
- Advisories
- 30
- Busiest month
- May38 alerts
- Busiest day
- May 27, 202218 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 4 tornado warnings covering Henry County in 2022 had a tornado report inside them.
Henry County, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 4 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 28 | 25 | 11% | 87 | 78% | 18 min |
| Flash flood warnings | 3 | 1 | 67% | 0 |
Each office's whole area, 2022
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Blacksburg, VA: tornado warnings | 36 | 5 | 86% | 9 | 44% | 14 min |
| NWS Blacksburg, VA: severe thunderstorm warnings | 272 | 224 | 18% | 947 | 73% | 23 min |
| NWS Blacksburg, VA: flash flood warnings | 25 | 9 | 64% | 21 | 81% | 74 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, 4:04 AM EST | Winter Weather Advisory | RNK | 32 hr |
| Jan 14, 3:51 AM EST | Winter Storm Watch | RNK | 24 hr |
| Jan 14, 8:28 PM EST | Winter Storm Warning | RNK | 3 days |
| Jan 16, 4:02 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 16, 11:59 AM EST | Mesoscale Discussion | SPC | 3 hr |
| Jan 27, 2:40 PM EST | Winter Weather Advisory | RNK | 42 hr |
| Feb 6, 10:03 PM EST | Winter Weather Advisory | RNK | 15 hr |
| Feb 7, 10:28 PM EST | Freezing Fog Advisory | RNK | 11 hr |
| Feb 17, 2:51 AM EST | Wind Advisory | RNK | 26 hr |
| Feb 24, 9:31 PM EST | Dense Fog Advisory | RNK | 12 hr |
| Mar 7, 3:38 AM EST | Wind Advisory | RNK | 17 hr |
| Mar 7, 5:58 PM EST | Special Weather Statement | RNK | 32 min |
| Mar 11, 1:54 PM EST | Wind Advisory | RNK | 35 hr |
| Mar 23, 6:09 PM EDT | Special Weather Statement | RNK | 36 min |
| Mar 23, 8:33 PM EDT | Tornado Watch | SPC | 3 hr |
| Mar 31, 9:05 AM EDT | Special Weather Statement | RNK | 25 min |
| Apr 19, 3:21 AM EDT | Freeze Warning | RNK | 30 hr |
| May 1, 6:00 AM EDT | Dense Fog Advisory | RNK | 4 hr |
| May 1, 1:04 PM EDT | Mesoscale Discussion | SPC | 56 min |
| May 1, 1:37 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 1, 3:33 PM EDT | Mesoscale Discussion | SPC | 57 min |
| May 1, 4:21 PM EDT | Special Weather Statement | RNK | 24 min |
| May 1, 5:17 PM EDT | Severe Thunderstorm Warning | RNK | 58 min |
| May 1, 6:43 PM EDT | Mesoscale Discussion | SPC | 92 min |
| May 6, 1:53 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 6, 2:32 PM EDT | Tornado Watch | SPC | 9 hr |
| May 6, 5:51 PM EDT | Mesoscale Discussion | SPC | 84 min |
| May 6, 7:40 PM EDT | Severe Thunderstorm Warning | RNK | 65 min |
| May 6, 8:06 PM EDT | Severe Thunderstorm Warning | RNK | 24 min |
| May 6, 8:28 PM EDT | Mesoscale Discussion | SPC | 92 min |
| May 15, 2:35 AM EDT | Dense Fog Advisory | RNK | 6 hr |
| May 16, 12:37 PM EDT | Mesoscale Discussion | SPC | 113 min |
| May 16, 2:13 PM EDT | Special Weather Statement | RNK | 32 min |
| May 16, 2:42 PM EDT | Special Weather Statement | RNK | 33 min |
| May 16, 2:49 PM EDT | Severe Thunderstorm Warning | RNK | 56 min |
| May 21, 5:39 PM EDT | Severe Thunderstorm Warning | RNK | 66 min |
| May 22, 12:39 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 26, 8:32 PM EDT | Mesoscale Discussion | SPC | 118 min |
| May 26, 9:03 PM EDT | Flood Watch | RNK | 23 hr |
| May 26, 9:11 PM EDT | Severe Thunderstorm Warning | RNK | 64 min |
| May 26, 10:13 PM EDT | Severe Thunderstorm Warning | RNK | 62 min |
| May 27, 4:00 AM EDT | Severe Thunderstorm Warning | RNK | 30 min |
| May 27, 4:20 AM EDT | Areal Flood Advisory | RNK | 6 hr |
| May 27, 4:25 AM EDT | Tornado Warning | RNK | 35 min |
| May 27, 5:12 AM EDT | Special Weather Statement | RNK | 33 min |
| May 27, 5:46 AM EDT | Tornado Warning | RNK | 44 min |
| May 27, 5:56 AM EDT | Special Weather Statement | RNK | 34 min |
| May 27, 6:24 AM EDT | Severe Thunderstorm Warning | RNK | 18 min |
| May 27, 6:24 AM EDT | Tornado Watch | SPC | 8 hr |
| May 27, 6:30 AM EDT | Tornado Warning | RNK | 30 min |
| May 27, 6:48 AM EDT | Severe Thunderstorm Warning | RNK | 42 min |
| May 27, 6:54 AM EDT | Areal Flood Advisory | RNK | 3 hr |
| May 27, 7:07 AM EDT | Severe Thunderstorm Warning | RNK | 25 min |
| May 27, 7:36 AM EDT | Severe Thunderstorm Warning | RNK | 39 min |
| May 27, 3:38 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 2, 1:53 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 2, 2:33 PM EDT | Severe Thunderstorm Warning | RNK | 57 min |
| Jun 2, 2:47 PM EDT | Severe Thunderstorm Warning | RNK | 58 min |
| Jun 2, 3:06 PM EDT | Severe Thunderstorm Warning | RNK | 54 min |
| Jun 2, 3:21 PM EDT | Special Weather Statement | RNK | 24 min |
| Jun 2, 3:35 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jun 14, 12:52 AM EDT | Severe Thunderstorm Warning | RNK | 53 min |
| Jun 14, 1:27 AM EDT | Special Weather Statement | RNK | 33 min |
| Jun 14, 2:15 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 16, 10:39 AM EDT | Heat Advisory | RNK | 7 hr |
| Jun 16, 1:24 PM EDT | Severe Thunderstorm Warning | RNK | 36 min |
| Jun 16, 1:43 PM EDT | Severe Thunderstorm Warning | RNK | 47 min |
| Jun 16, 1:53 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 16, 2:02 PM EDT | Severe Thunderstorm Warning | RNK | 58 min |
| Jun 16, 2:18 PM EDT | Severe Thunderstorm Warning | RNK | 57 min |
| Jun 16, 2:52 PM EDT | Severe Thunderstorm Warning | RNK | 53 min |
| Jun 16, 3:00 PM EDT | Severe Thunderstorm Warning | RNK | 60 min |
| Jun 16, 4:40 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 17, 1:44 AM EDT | Special Weather Statement | RNK | 31 min |
| Jun 17, 2:24 AM EDT | Special Weather Statement | RNK | 36 min |
| Jun 17, 3:07 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jun 17, 3:37 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 17, 4:40 PM EDT | Severe Thunderstorm Warning | RNK | 80 min |
| Jul 2, 6:16 PM EDT | Severe Thunderstorm Warning | RNK | 59 min |
| Jul 2, 6:18 PM EDT | Special Weather Statement | RNK | 27 min |
| Jul 2, 7:16 PM EDT | Areal Flood Advisory | RNK | 4 hr |
| Jul 5, 4:11 PM EDT | Severe Thunderstorm Warning | RNK | 64 min |
| Jul 6, 2:27 PM EDT | Special Weather Statement | RNK | 33 min |
| Jul 6, 5:29 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Jul 6, 5:54 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 7, 3:37 PM EDT | Special Weather Statement | RNK | 23 min |
| Jul 8, 2:10 PM EDT | Special Weather Statement | RNK | 50 min |
| Jul 8, 3:06 PM EDT | Areal Flood Advisory | RNK | 3 hr |
| Jul 8, 3:08 PM EDT | Special Weather Statement | RNK | 37 min |
| Jul 8, 8:34 PM EDT | Special Weather Statement | RNK | 26 min |
| Jul 9, 3:29 PM EDT | Special Weather Statement | RNK | 31 min |
| Jul 12, 9:03 PM EDT | Special Weather Statement | RNK | 42 min |
| Jul 18, 2:44 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 18, 10:29 PM EDT | Special Weather Statement | RNK | 46 min |
| Jul 20, 6:34 PM EDT | Special Weather Statement | RNK | 41 min |
| Jul 20, 7:01 PM EDT | Special Weather Statement | RNK | 29 min |
| Jul 25, 1:16 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jul 26, 1:32 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jul 26, 3:27 PM EDT | Severe Thunderstorm Warning | RNK | 48 min |
| Jul 26, 4:02 PM EDT | Special Weather Statement | RNK | 28 min |
| Jul 26, 4:51 PM EDT | Flash Flood Warning | RNK | 109 min |
| Jul 27, 1:53 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 27, 5:15 PM EDT | Special Weather Statement | RNK | 30 min |
| Jul 31, 7:34 PM EDT | Areal Flood Advisory | RNK | 3 hr |
| Aug 5, 1:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 5, 4:49 PM EDT | Severe Thunderstorm Warning | RNK | 56 min |
| Aug 6, 1:37 AM EDT | Areal Flood Advisory | RNK | 3 hr |
| Aug 7, 6:08 AM EDT | Dense Fog Advisory | RNK | 3 hr |
| Aug 8, 5:17 PM EDT | Special Weather Statement | RNK | 43 min |
| Aug 8, 5:33 PM EDT | Special Weather Statement | RNK | 27 min |
| Aug 9, 1:16 PM EDT | Special Weather Statement | RNK | 44 min |
| Aug 9, 1:56 PM EDT | Areal Flood Advisory | RNK | 3 hr |
| Aug 10, 2:02 PM EDT | Severe Thunderstorm Warning | RNK | 58 min |
| Aug 21, 7:48 AM EDT | Special Weather Statement | RNK | 42 min |
| Aug 21, 9:17 PM EDT | Flash Flood Warning | RNK | 3 hr |
| Aug 21, 9:24 PM EDT | Flash Flood Warning | RNK | 4 hr |
| Aug 21, 10:29 PM EDT | Special Weather Statement | RNK | 46 min |
| Aug 22, 2:53 PM EDT | Areal Flood Advisory | RNK | 98 min |
| Aug 26, 1:28 PM EDT | Special Weather Statement | RNK | 62 min |
| Aug 26, 3:10 PM EDT | Special Weather Statement | RNK | 50 min |
| Aug 27, 7:50 AM EDT | Dense Fog Advisory | RNK | 2 hr |
| Aug 30, 3:52 PM EDT | Special Weather Statement | RNK | 23 min |
| Aug 30, 4:18 PM EDT | Special Weather Statement | RNK | 27 min |
| Aug 30, 4:46 PM EDT | Special Weather Statement | RNK | 44 min |
| Sep 5, 1:04 AM EDT | Special Weather Statement | RNK | 56 min |
| Sep 5, 2:05 AM EDT | Special Weather Statement | RNK | 55 min |
| Sep 5, 4:14 AM EDT | Flood Watch | RNK | 16 hr |
| Sep 12, 2:05 AM EDT | Dense Fog Advisory | RNK | 7 hr |
| Sep 25, 4:20 PM EDT | Special Weather Statement | RNK | 25 min |
| Sep 25, 4:56 PM EDT | Areal Flood Advisory | RNK | 2 hr |
| Sep 30, 3:20 AM EDT | Wind Advisory | RNK | 31 hr |
| Sep 30, 3:24 AM EDT | Flood Watch | RNK | 35 hr |
| Sep 30, 8:10 PM EDT | Areal Flood Advisory | RNK | 118 min |
| Oct 12, 11:58 PM EDT | Special Weather Statement | RNK | 32 min |
| Oct 16, 9:15 PM EDT | Special Weather Statement | RNK | 30 min |
| Oct 17, 4:03 AM EDT | Freeze Watch | RNK | 25 hr |
| Oct 18, 4:54 AM EDT | Freeze Warning | RNK | 28 hr |
| Nov 1, 4:10 AM EDT | Dense Fog Advisory | RNK | 6 hr |
| Nov 7, 3:57 AM EST | Dense Fog Advisory | RNK | 5 hr |
| Nov 11, 3:41 AM EST | Special Weather Statement | RNK | 64 min |
| Nov 11, 6:15 AM EST | Tornado Watch | SPC | 12 hr |
| Nov 11, 11:20 AM EST | Special Weather Statement | RNK | 25 min |
| Nov 11, 12:54 PM EST | Special Weather Statement | RNK | 21 min |
| Nov 11, 1:17 PM EST | Tornado Warning | RNK | 13 min |
| Nov 11, 4:38 PM EST | Special Weather Statement | RNK | 37 min |
| Dec 8, 12:09 AM EST | Dense Fog Advisory | RNK | 8 hr |
| Dec 21, 1:38 PM EST | Wind Chill Watch | RNK | 21 hr |
| Dec 22, 3:55 AM EST | Wind Advisory | RNK | 39 hr |
| Dec 22, 10:18 AM EST | Wind Chill Advisory | RNK | 3 days |
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 | 28 |
| Tornado Warning | 4 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 4 |
| Mesoscale Discussion | 23 |
| Special Weather Statement | 44 |
| Flooding | |
| Flash Flood Warning | 3 |
| Flood Watch | 3 |
| Areal Flood Advisory | 10 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 3 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 1 |
| Wind Chill Watch | 1 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 5 |
| Fog and smoke | |
| Dense Fog Advisory | 9 |
| Freezing Fog Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20212023
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.