Alert archive / Virginia / Loudoun County / 2011
Weather alerts in Loudoun County, Virginia, May 2011
34 weather alerts in May 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
- Alerts
- 34
- Warnings
- 15
- Watches
- 3
- Advisories
- 0
- Busiest day
- May 18, 201112 alerts
Over time
By day
Days in UTC, the clock the archive keeps.
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 |
|---|---|---|---|
| May 4, 5:35 PM EDT | Special Weather Statement | LWX | 25 min |
| May 6, 5:51 PM EDT | Special Weather Statement | LWX | 24 min |
| May 16, 7:24 PM EDT | Severe Thunderstorm Warning | LWX | 51 min |
| May 16, 7:54 PM EDT | Severe Thunderstorm Warning | LWX | 51 min |
| May 17, 6:27 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 18, 6:31 AM EDT | River Flood Warning | LWX | 45 hr |
| May 18, 6:31 AM EDT | River Flood Warning | LWX | 62 hr |
| May 18, 11:55 AM EDT | Mesoscale Discussion | SPC | 65 min |
| May 18, 12:55 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 18, 2:08 PM EDT | Flash Flood Warning | LWX | 4 hr |
| May 18, 3:06 PM EDT | Special Weather Statement | LWX | 24 min |
| May 18, 3:08 PM EDT | Mesoscale Discussion | SPC | 67 min |
| May 18, 3:12 PM EDT | Severe Thunderstorm Warning | LWX | 33 min |
| May 18, 3:40 PM EDT | Flash Flood Warning | LWX | 2 hr |
| May 18, 3:44 PM EDT | Severe Thunderstorm Warning | LWX | 19 min |
| May 18, 3:50 PM EDT | Severe Thunderstorm Warning | LWX | 40 min |
| May 18, 6:01 PM EDT | Mesoscale Discussion | SPC | 89 min |
| May 23, 1:23 AM EDT | Special Weather Statement | LWX | 37 min |
| May 23, 10:33 AM EDT | Mesoscale Discussion | SPC | 87 min |
| May 23, 10:48 AM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| May 23, 2:33 PM EDT | Mesoscale Discussion | SPC | 87 min |
| May 23, 4:24 PM EDT | Severe Thunderstorm Warning | LWX | 51 min |
| May 23, 4:40 PM EDT | Mesoscale Discussion | SPC | 95 min |
| May 23, 5:12 PM EDT | Severe Thunderstorm Warning | LWX | 48 min |
| May 24, 2:49 PM EDT | Special Weather Statement | LWX | 26 min |
| May 24, 3:03 PM EDT | Special Weather Statement | LWX | 27 min |
| May 24, 3:26 PM EDT | Special Weather Statement | LWX | 34 min |
| May 27, 1:00 AM EDT | Severe Thunderstorm Warning | LWX | 45 min |
| May 27, 12:24 PM EDT | Mesoscale Discussion | SPC | 96 min |
| May 27, 12:57 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
| May 27, 6:14 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 27, 7:06 PM EDT | Severe Thunderstorm Warning | LWX | 39 min |
| May 27, 7:21 PM EDT | Severe Thunderstorm Warning | LWX | 39 min |
| May 27, 7:29 PM EDT | Severe Thunderstorm Warning | LWX | 46 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 | 11 |
| Severe Thunderstorm Watch | 3 |
| Mesoscale Discussion | 9 |
| Special Weather Statement | 7 |
| Flooding | |
| Flash Flood Warning | 2 |
| River Flood Warning | 2 |
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20102012
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.