Alert archive / Virginia / Loudoun County / 2018
Weather alerts in Loudoun County, Virginia, September 2018
28 weather alerts in September 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
- Alerts
- 28
- Warnings
- 12
- Watches
- 13
- Advisories
- 2
- Busiest day
- September 28, 20187 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 |
|---|---|---|---|
| Aug 31, 9:49 PM EDT | Areal Flood Warning | LWX | 2 hr |
| Sep 1, 7:00 PM EDT | Areal Flood Warning | LWX | 3 hr |
| Sep 4, 2:17 AM EDT | Heat Advisory | LWX | 17 hr |
| Sep 7, 3:29 AM EDT | Flash Flood Watch | LWX | 19 hr |
| Sep 8, 2:46 PM EDT | Flood Watch | LWX | 39 hr |
| Sep 9, 12:56 PM EDT | River Flood Watch | LWX | 5 days |
| Sep 9, 12:56 PM EDT | River Flood Watch | LWX | 5 days |
| Sep 9, 12:57 PM EDT | River Flood Watch | LWX | 5 days |
| Sep 9, 6:06 PM EDT | River Flood Warning | LWX | 59 hr |
| Sep 9, 6:10 PM EDT | River Flood Warning | LWX | 69 hr |
| Sep 10, 4:47 AM EDT | River Flood Warning | LWX | 49 hr |
| Sep 11, 5:24 AM EDT | Dense Fog Advisory | LWX | 4 hr |
| Sep 16, 3:11 PM EDT | Flash Flood Watch | LWX | 52 hr |
| Sep 16, 9:24 PM EDT | River Flood Watch | LWX | 24 hr |
| Sep 16, 9:28 PM EDT | River Flood Watch | LWX | 42 hr |
| Sep 16, 9:31 PM EDT | River Flood Watch | LWX | 24 hr |
| Sep 26, 3:40 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 26, 5:02 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Sep 27, 12:08 AM EDT | River Flood Warning | LWX | 13 hr |
| Sep 27, 2:39 AM EDT | Flood Watch | LWX | 27 hr |
| Sep 27, 4:53 PM EDT | River Flood Watch | LWX | 5 hr |
| Sep 27, 9:31 PM EDT | River Flood Warning | LWX | 3 days |
| Sep 27, 9:34 PM EDT | River Flood Watch | LWX | 62 hr |
| Sep 28, 12:09 AM EDT | Areal Flood Warning | LWX | 22 hr |
| Sep 28, 1:09 AM EDT | Areal Flood Warning | LWX | 11 hr |
| Sep 28, 3:46 AM EDT | River Flood Warning | LWX | 56 hr |
| Sep 28, 3:49 AM EDT | River Flood Warning | LWX | 56 hr |
| Sep 28, 7:13 AM EDT | River Flood Warning | LWX | 11 hr |
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 Watch | 1 |
| Mesoscale Discussion | 1 |
| Flooding | |
| Areal Flood Warning | 4 |
| River Flood Warning | 8 |
| Flash Flood Watch | 2 |
| Flood Watch | 2 |
| River Flood Watch | 8 |
| Heat | |
| Heat Advisory | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 1 |
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20172019
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.