Alert archive / Maryland / Mesoscale Discussions / 2021
Mesoscale Discussions in Maryland, August 2021
15 mesoscale discussions in August 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 mesoscale discussions reaches back to 2003.
Mesoscale Discussions by county
Each county as a circle sized by its count in August 2021. Tap one for its archive.
- Mesoscale Discussions
- 15
- Busiest day
- August 18, 20214 mesoscale discussions
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 |
|---|---|---|---|---|
| Aug 10, 2:30 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 11 more | 3 hr |
| Aug 11, 1:01 PM EDT | Mesoscale Discussion | SPC | Carroll, Charles, Frederick, Howard, Montgomery, Prince George's and 1 more | 89 min |
| Aug 11, 3:47 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Cecil, Charles and 9 more | 88 min |
| Aug 11, 6:44 PM EDT | Mesoscale Discussion | SPC | Cecil | 91 min |
| Aug 13, 12:33 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Carroll, Charles, Frederick, Harford and 5 more | 87 min |
| Aug 13, 4:48 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Cecil, Charles, Harford, Howard and 2 more | 87 min |
| Aug 13, 6:02 PM EDT | Mesoscale Discussion | SPC | Wicomico, Worcester | 58 min |
| Aug 14, 1:10 PM EDT | Mesoscale Discussion | SPC | Calvert, Charles, Dorchester, Prince George's, Saint Mary's, Somerset and 1 more | 2 hr |
| Aug 18, 8:46 AM EDT | Mesoscale Discussion | SPC | Frederick, Washington | 119 min |
| Aug 18, 10:58 AM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Charles, Frederick and 9 more | 92 min |
| Aug 18, 3:29 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Carroll, Cecil, Frederick, Harford and 5 more | 91 min |
| Aug 18, 4:57 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Carroll, Cecil, Frederick, Harford and 6 more | 93 min |
| Aug 27, 1:41 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Cecil, Charles and 9 more | 3 hr |
| Aug 28, 1:05 PM EDT | Mesoscale Discussion | SPC | Allegany, Frederick, Washington | 115 min |
| Aug 30, 4:51 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Cecil, Charles, Howard and 6 more | 84 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Frederick County10
- Howard County10
- Prince George's County10
- Anne Arundel County9
- Charles County9
- Montgomery County9
- City of Baltimore9
- Baltimore County8
- Carroll County8
- Cecil County8
- Harford County8
- Washington County8
- Kent County7
- Calvert County6
- Queen Anne's County4
- Saint Mary's County4
- Talbot County4
- Caroline County2
- Wicomico County1
- Worcester County1
- Dorchester County1
- Somerset County1
- Allegany 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.