Alert archive / Virginia / Rockingham County
Weather alerts in Rockingham County, Virginia, 2010
172 weather alerts in 2010, 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 2010. Tap one for its archive.
- Alerts
- 172
- Warnings
- 54
- Watches
- 36
- Advisories
- 39
- Busiest month
- May27 alerts
- Busiest day
- May 28, 20107 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Rockingham County, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 25 | 21 | 16% | 15 | 87% | 10 min |
| Flash flood warnings | 8 | 5 | 38% | 0 |
Each office's whole area, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Baltimore/Washington: tornado warnings | 31 | 2 | 94% | 4 | 50% | 17 min |
| NWS Baltimore/Washington: severe thunderstorm warnings | 257 | 198 | 23% | 762 | 86% | 21 min |
| NWS Baltimore/Washington: flash flood warnings | 64 | 35 | 45% | 139 | 92% | 166 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, 4:15 AM EST | Wind Chill Advisory | LWX | 53 hr |
| Jan 2, 4:21 AM EST | Wind Advisory | LWX | 38 hr |
| Jan 7, 3:48 AM EST | Winter Weather Advisory | LWX | 57 hr |
| Jan 20, 2:50 PM EST | Winter Storm Watch | LWX | 22 hr |
| Jan 21, 4:09 AM EST | Winter Storm Warning | LWX | 29 hr |
| Jan 21, 12:55 PM EST | Winter Weather Advisory | LWX | 24 hr |
| Jan 23, 1:08 PM EST | Flash Flood Watch | LWX | 48 hr |
| Jan 24, 4:32 AM EST | Wind Advisory | LWX | 19 hr |
| Jan 24, 6:06 PM EST | Wind Advisory | LWX | 19 hr |
| Jan 24, 10:58 PM EST | Flash Flood Warning | LWX | 9 hr |
| Jan 24, 11:54 PM EST | Flash Flood Warning | LWX | 9 hr |
| Jan 25, 2:11 AM EST | Flash Flood Warning | LWX | 6 hr |
| Jan 25, 7:57 AM EST | Areal Flood Warning | LWX | 6 hr |
| Jan 25, 2:14 PM EST | Areal Flood Warning | LWX | 10 hr |
| Jan 25, 4:18 PM EST | River Flood Warning | LWX | 18 hr |
| Jan 29, 11:00 AM EST | Winter Weather Advisory | LWX | 38 hr |
| Jan 29, 6:05 PM EST | Winter Storm Warning | LWX | 33 hr |
| Feb 2, 3:07 AM EST | Winter Weather Advisory | LWX | 26 hr |
| Feb 2, 12:03 PM EST | Winter Storm Warning | LWX | 17 hr |
| Feb 3, 2:45 PM EST | Winter Storm Watch | LWX | 19 hr |
| Feb 4, 9:59 AM EST | Winter Storm Warning | LWX | 55 hr |
| Feb 5, 7:06 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 5, 11:45 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 7, 3:15 PM EST | Winter Storm Watch | LWX | 35 hr |
| Feb 8, 3:04 PM EST | Winter Storm Warning | LWX | 46 hr |
| Feb 10, 11:04 AM EST | Wind Advisory | LWX | 8 hr |
| Feb 15, 3:49 AM EST | Winter Weather Advisory | LWX | 17 hr |
| Feb 25, 9:35 AM EST | High Wind Watch | LWX | 6 hr |
| Feb 25, 3:41 PM EST | High Wind Warning | LWX | 26 hr |
| Mar 10, 5:46 AM EST | Flood Watch | LWX | 3 days |
| Mar 13, 5:34 AM EST | Areal Flood Warning | LWX | 6 hr |
| Mar 13, 4:38 PM EST | River Flood Warning | LWX | 6 hr |
| Mar 22, 12:44 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 28, 1:49 PM EDT | Flood Watch | LWX | 14 hr |
| Apr 2, 1:03 PM EDT | Fire Weather Watch | LWX | 20 hr |
| Apr 7, 9:57 AM EDT | Red Flag Warning | LWX | 9 hr |
| Apr 9, 2:53 PM EDT | Frost Advisory | LWX | 13 hr |
| Apr 10, 3:00 PM EDT | Frost Advisory | LWX | 17 hr |
| Apr 16, 1:32 PM EDT | Red Flag Warning | LWX | 6 hr |
| Apr 17, 9:31 AM EDT | Red Flag Warning | LWX | 11 hr |
| Apr 18, 8:59 AM EDT | Freeze Watch | LWX | 5 hr |
| Apr 18, 2:14 PM EDT | Freeze Warning | LWX | 15 hr |
| Apr 19, 5:13 AM EDT | Frost Advisory | LWX | 3 hr |
| Apr 19, 2:57 PM EDT | Frost Advisory | LWX | 17 hr |
| Apr 25, 2:26 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Apr 25, 4:37 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 25, 6:16 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Apr 25, 7:34 PM EDT | Severe Thunderstorm Warning | LWX | 28 min |
| Apr 25, 8:53 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 27, 1:50 PM EDT | Frost Advisory | LWX | 16 hr |
| Apr 28, 2:05 PM EDT | Frost Advisory | LWX | 19 hr |
| May 2, 4:45 PM EDT | Mesoscale Discussion | SPC | 60 min |
| May 2, 5:58 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 2, 8:27 PM EDT | Mesoscale Discussion | SPC | 63 min |
| May 7, 3:24 PM EDT | Wind Advisory | LWX | 29 hr |
| May 8, 5:25 AM EDT | Special Weather Statement | LWX | 35 min |
| May 8, 12:50 PM EDT | Red Flag Warning | LWX | 7 hr |
| May 12, 2:20 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 12, 2:36 PM EDT | Special Weather Statement | LWX | 39 min |
| May 14, 11:56 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 14, 2:29 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 16, 5:48 PM EDT | Flash Flood Watch | LWX | 12 hr |
| May 20, 3:13 AM EDT | Dense Fog Advisory | LWX | 6 hr |
| May 23, 6:23 AM EDT | Dense Fog Advisory | LWX | 110 min |
| May 27, 5:48 PM EDT | Severe Thunderstorm Warning | LWX | 42 min |
| May 27, 5:51 PM EDT | Flash Flood Warning | LWX | 2 hr |
| May 27, 6:43 PM EDT | Severe Thunderstorm Warning | LWX | 47 min |
| May 27, 6:55 PM EDT | Severe Thunderstorm Warning | LWX | 50 min |
| May 27, 7:28 PM EDT | Severe Thunderstorm Warning | LWX | 47 min |
| May 28, 3:10 AM EDT | Flash Flood Watch | LWX | 16 hr |
| May 28, 1:52 PM EDT | Special Weather Statement | LWX | 23 min |
| May 28, 2:52 PM EDT | Flash Flood Warning | LWX | 61 min |
| May 28, 2:53 PM EDT | Special Weather Statement | LWX | 37 min |
| May 28, 3:08 PM EDT | Severe Thunderstorm Warning | LWX | 52 min |
| May 28, 3:12 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 28, 4:22 PM EDT | Mesoscale Discussion | SPC | 53 min |
| May 31, 12:39 PM EDT | Flash Flood Watch | LWX | 8 hr |
| May 31, 5:48 PM EDT | Flash Flood Warning | LWX | 117 min |
| Jun 3, 1:32 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 3, 2:35 PM EDT | Special Weather Statement | LWX | 25 min |
| Jun 3, 3:36 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Jun 4, 2:03 PM EDT | Special Weather Statement | LWX | 42 min |
| Jun 4, 2:29 PM EDT | Severe Thunderstorm Warning | LWX | 46 min |
| Jun 4, 2:39 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 4, 3:40 PM EDT | Severe Thunderstorm Warning | LWX | 50 min |
| Jun 4, 4:40 PM EDT | Severe Thunderstorm Warning | LWX | 50 min |
| Jun 4, 7:03 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jun 6, 12:40 PM EDT | Tornado Watch | SPC | 6 hr |
| Jun 16, 4:36 PM EDT | Severe Thunderstorm Warning | LWX | 39 min |
| Jun 19, 9:22 PM EDT | Special Weather Statement | LWX | 23 min |
| Jun 22, 11:35 AM EDT | Mesoscale Discussion | SPC | 25 min |
| Jun 22, 3:38 PM EDT | Severe Thunderstorm Warning | LWX | 39 min |
| Jun 24, 12:28 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 24, 2:34 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 24, 3:53 PM EDT | Severe Thunderstorm Warning | LWX | 37 min |
| Jun 27, 2:22 PM EDT | Severe Thunderstorm Warning | LWX | 23 min |
| Jun 27, 4:33 PM EDT | Special Weather Statement | LWX | 27 min |
| Jun 28, 12:26 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 5, 7:38 PM EDT | Excessive Heat Watch | LWX | 9 hr |
| Jul 9, 4:23 PM EDT | Severe Thunderstorm Warning | LWX | 37 min |
| Jul 9, 5:32 PM EDT | Flash Flood Watch | LWX | 6 hr |
| Jul 13, 4:26 PM EDT | Special Weather Statement | LWX | 34 min |
| Jul 17, 10:29 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 17, 11:49 AM EDT | Severe Thunderstorm Warning | LWX | 26 min |
| Jul 17, 12:19 PM EDT | Special Weather Statement | LWX | 26 min |
| Jul 17, 12:27 PM EDT | Severe Thunderstorm Warning | LWX | 33 min |
| Jul 17, 12:47 PM EDT | Severe Thunderstorm Warning | LWX | 28 min |
| Jul 20, 1:29 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 22, 2:06 PM EDT | Heat Advisory | LWX | 31 hr |
| Jul 23, 9:14 PM EDT | Heat Advisory | LWX | 47 hr |
| Jul 25, 1:21 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Jul 25, 1:46 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 25, 2:53 PM EDT | Special Weather Statement | LWX | 37 min |
| Jul 25, 3:25 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Jul 29, 11:54 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 29, 4:20 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Aug 4, 5:30 PM EDT | Mesoscale Discussion | SPC | 30 min |
| Aug 4, 5:52 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 4, 6:14 PM EDT | Severe Thunderstorm Warning | LWX | 46 min |
| Aug 4, 6:52 PM EDT | Severe Thunderstorm Warning | LWX | 53 min |
| Aug 4, 7:29 PM EDT | Severe Thunderstorm Warning | LWX | 61 min |
| Aug 4, 7:48 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Aug 5, 12:37 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Aug 5, 1:19 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 5, 2:28 PM EDT | Severe Thunderstorm Warning | LWX | 34 min |
| Aug 5, 3:20 PM EDT | Severe Thunderstorm Warning | LWX | 55 min |
| Aug 5, 3:56 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Aug 5, 4:16 PM EDT | Severe Thunderstorm Warning | LWX | 59 min |
| Aug 5, 6:23 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Aug 12, 1:52 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Aug 12, 2:51 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 15, 4:09 PM EDT | Special Weather Statement | LWX | 36 min |
| Aug 15, 4:48 PM EDT | Special Weather Statement | LWX | 27 min |
| Aug 16, 2:01 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Aug 16, 2:13 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 16, 2:55 PM EDT | Special Weather Statement | LWX | 35 min |
| Aug 20, 5:13 AM EDT | Dense Fog Advisory | LWX | 4 hr |
| Sep 7, 2:39 PM EDT | Fire Weather Watch | LWX | 19 hr |
| Sep 8, 9:42 AM EDT | Red Flag Warning | LWX | 9 hr |
| Sep 22, 2:04 PM EDT | Severe Thunderstorm Warning | LWX | 41 min |
| Sep 27, 3:43 AM EDT | Flash Flood Watch | LWX | 28 hr |
| Sep 29, 2:21 AM EDT | Flash Flood Watch | LWX | 50 hr |
| Sep 30, 8:10 AM EDT | Flash Flood Warning | LWX | 6 hr |
| Oct 21, 9:31 AM EDT | Red Flag Warning | LWX | 10 hr |
| Oct 21, 2:28 PM EDT | Wind Advisory | LWX | 3 hr |
| Oct 21, 2:52 PM EDT | Frost Advisory | LWX | 18 hr |
| Oct 22, 8:59 AM EDT | Freeze Watch | LWX | 5 hr |
| Oct 22, 2:27 PM EDT | Freeze Warning | LWX | 19 hr |
| Oct 26, 2:43 PM EDT | Wind Advisory | LWX | 11 hr |
| Oct 26, 6:21 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Oct 26, 7:19 PM EDT | Tornado Watch | SPC | 12 hr |
| Oct 26, 11:05 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Oct 27, 12:24 AM EDT | Mesoscale Discussion | SPC | 66 min |
| Oct 27, 9:56 PM EDT | Dense Fog Advisory | LWX | 7 hr |
| Nov 16, 2:19 PM EST | Wind Advisory | LWX | 25 hr |
| Nov 26, 11:55 PM EST | Wind Advisory | LWX | 9 hr |
| Nov 29, 3:20 PM EST | Flash Flood Watch | LWX | 44 hr |
| Nov 30, 3:12 AM EST | Wind Advisory | LWX | 32 hr |
| Dec 1, 3:06 AM EST | High Wind Warning | LWX | 3 hr |
| Dec 1, 3:28 AM EST | Severe Thunderstorm Warning | LWX | 47 min |
| Dec 1, 4:29 AM EST | Flash Flood Warning | LWX | 6 hr |
| Dec 1, 10:02 AM EST | Areal Flood Warning | LWX | 3 hr |
| Dec 5, 11:11 AM EST | Wind Advisory | LWX | 15 hr |
| Dec 6, 8:53 AM EST | Wind Advisory | LWX | 11 hr |
| Dec 11, 2:13 PM EST | Winter Weather Advisory | LWX | 22 hr |
| Dec 13, 10:28 AM EST | Wind Advisory | LWX | 36 hr |
| Dec 13, 10:54 AM EST | Wind Chill Advisory | LWX | 46 hr |
| Dec 15, 2:21 PM EST | Winter Weather Advisory | LWX | 29 hr |
| Dec 23, 1:30 AM EST | Wind Advisory | LWX | 17 hr |
| Dec 25, 3:42 PM EST | Winter Weather Advisory | LWX | 48 hr |
| Dec 26, 2:42 PM EST | Wind Advisory | LWX | 30 hr |
| Dec 30, 6:54 AM EST | Freezing Rain Advisory | LWX | 5 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 archive20092011
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.