Alert archive / Maryland / Severe Thunderstorm Watches / 2021
Severe Thunderstorm Watches in Maryland, May 2021
2 severe thunderstorm watches in May 2021. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of severe thunderstorm watches reaches back to 1997.
Severe Thunderstorm Watches by county
Each county as a circle sized by its count in May 2021. Tap one for its archive.
- Severe Thunderstorm Watches
- 2
- Busiest day
- May 4, 20211 severe thunderstorm watches
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 | Counties | Lasted |
|---|---|---|---|---|
| May 4, 1:51 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Cecil, Charles and 8 more | 6 hr |
| May 26, 2:48 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 18 more | 7 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Anne Arundel County2
- Baltimore County2
- Calvert County2
- Carroll County2
- Cecil County2
- Charles County2
- Frederick County2
- Harford County2
- Howard County2
- Montgomery County2
- Prince George's County2
- Saint Mary's County2
- Washington County2
- City of Baltimore2
- Allegany County1
- Caroline County1
- Dorchester County1
- Garrett County1
- Kent County1
- Queen Anne's County1
- Somerset County1
- Talbot County1
- Wicomico County1
- Worcester County1
Nearby
Alerts in force nowTornadoes on recordThe 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. Warning verification from the Mesonet's Cow. Rebuilt daily.