Alert archive / Maryland / Frederick County / 2021
Weather alerts in Frederick County, Maryland, July 2021
26 weather alerts in July 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
- Alerts
- 26
- Warnings
- 13
- Watches
- 5
- Advisories
- 1
- Busiest day
- July 17, 202110 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 |
|---|---|---|---|
| Jul 1, 11:45 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 1, 12:46 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 6, 3:01 AM EDT | Heat Advisory | LWX | 17 hr |
| Jul 7, 4:47 PM EDT | Severe Thunderstorm Warning | LWX | 43 min |
| Jul 9, 6:55 PM EDT | Severe Thunderstorm Warning | LWX | 50 min |
| Jul 12, 1:32 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jul 12, 2:43 PM EDT | Severe Thunderstorm Warning | LWX | 47 min |
| Jul 12, 3:15 PM EDT | Severe Thunderstorm Warning | LWX | 22 min |
| Jul 12, 3:34 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 17, 12:00 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 17, 1:13 PM EDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jul 17, 3:24 PM EDT | Severe Thunderstorm Warning | LWX | 24 min |
| Jul 17, 3:50 PM EDT | Severe Thunderstorm Warning | LWX | 40 min |
| Jul 17, 4:38 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jul 17, 5:44 PM EDT | Severe Thunderstorm Warning | LWX | 46 min |
| Jul 17, 6:35 PM EDT | Severe Thunderstorm Warning | LWX | 40 min |
| Jul 17, 6:45 PM EDT | Severe Thunderstorm Warning | LWX | 30 min |
| Jul 17, 6:54 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 17, 7:11 PM EDT | Severe Thunderstorm Warning | LWX | 49 min |
| Jul 21, 11:56 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 21, 1:27 PM EDT | Severe Thunderstorm Warning | LWX | 21 min |
| Jul 21, 1:59 PM EDT | Severe Thunderstorm Warning | LWX | 23 min |
| Jul 29, 1:21 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Jul 29, 2:23 PM EDT | Tornado Watch | SPC | 8 hr |
| Jul 29, 3:31 PM EDT | Severe Thunderstorm Warning | LWX | 44 min |
| Jul 29, 4:26 PM EDT | Mesoscale Discussion | SPC | 94 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 | 13 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 7 |
| Heat | |
| Heat Advisory | 1 |
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20202022
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. Rebuilt daily.