Alert archive / Maryland / Frederick County / 2018
Weather alerts in Frederick County, Maryland, September 2018
23 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
- 23
- Warnings
- 14
- Watches
- 7
- Advisories
- 1
- Busiest day
- September 26, 20185 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 |
|---|---|---|---|
| Sep 1, 7:00 PM EDT | Areal Flood Warning | LWX | 3 hr |
| Sep 1, 7:27 PM EDT | Areal Flood Warning | LWX | 2 hr |
| Sep 4, 2:17 AM EDT | Heat Advisory | LWX | 17 hr |
| Sep 7, 4:48 PM EDT | Severe Thunderstorm Warning | LWX | 42 min |
| Sep 7, 6:17 PM EDT | Areal Flood Warning | LWX | 4 hr |
| Sep 8, 2:46 PM EDT | Flood Watch | LWX | 39 hr |
| Sep 9, 9:36 AM EDT | Areal Flood Warning | LWX | 34 hr |
| Sep 9, 12:50 PM EDT | River Flood Warning | LWX | 48 hr |
| Sep 9, 12:56 PM EDT | River Flood Watch | LWX | 5 days |
| Sep 9, 6:06 PM EDT | River Flood Warning | LWX | 59 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 26, 3:40 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 26, 4:32 PM EDT | Severe Thunderstorm Warning | LWX | 58 min |
| Sep 26, 5:02 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Sep 26, 5:03 PM EDT | Severe Thunderstorm Warning | LWX | 42 min |
| Sep 26, 6:28 PM EDT | Areal Flood Warning | LWX | 11 hr |
| Sep 27, 2:39 AM EDT | Flood Watch | LWX | 27 hr |
| 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, 3:55 AM EDT | River Flood Warning | LWX | 22 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 Warning | 3 |
| Severe Thunderstorm Watch | 1 |
| Mesoscale Discussion | 1 |
| Flooding | |
| Areal Flood Warning | 7 |
| River Flood Warning | 4 |
| Flash Flood Watch | 1 |
| Flood Watch | 2 |
| River Flood Watch | 3 |
| Heat | |
| Heat 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.