Alert archive / Maryland / Mesoscale Discussions
Mesoscale Discussions in Maryland, 2011
126 mesoscale discussions in 2011. 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 2011. Tap one for its archive.
- Mesoscale Discussions
- 126
- Busiest month
- April33 mesoscale discussions
- Busiest day
- April 27, 20116 mesoscale discussions
Over time
By month
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 |
|---|---|---|---|---|
| Jan 17, 7:44 PM EST | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Charles, Howard, Montgomery, Prince George's and 1 more | 6 hr |
| Jan 18, 12:29 AM EST | Mesoscale Discussion | SPC | Cecil, Harford | 6 hr |
| Jan 26, 7:30 AM EST | Mesoscale Discussion | SPC | Allegany, Garrett, Washington | 5 hr |
| Jan 26, 11:19 AM EST | Mesoscale Discussion | SPC | Garrett | 4 hr |
| Jan 26, 2:19 PM EST | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 13 more | 6 hr |
| Feb 1, 8:39 PM EST | Mesoscale Discussion | SPC | Carroll, Washington | 6 hr |
| Feb 21, 5:58 PM EST | Mesoscale Discussion | SPC | Baltimore, Carroll, Frederick, Harford, Howard, Washington and 1 more | 4 hr |
| Feb 21, 6:33 PM EST | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Frederick, Garrett, Howard, Montgomery and 3 more | 5 hr |
| Feb 25, 11:36 AM EST | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Cecil, Charles, Dorchester and 10 more | 84 min |
| Feb 25, 2:40 PM EST | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Cecil, Charles and 9 more | 65 min |
| Feb 28, 8:36 AM EST | Mesoscale Discussion | SPC | Allegany, Carroll, Frederick, Garrett, Howard, Montgomery and 1 more | 24 min |
| Feb 28, 12:49 PM EST | Mesoscale Discussion | SPC | Calvert, Caroline, Charles, Dorchester, Saint Mary's, Somerset and 2 more | 56 min |
| Mar 6, 12:06 PM EST | Mesoscale Discussion | SPC | Charles, Saint Mary's | 84 min |
| Mar 23, 3:54 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett, Washington | 96 min |
| Mar 23, 8:13 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Charles, Howard, Montgomery, Prince George's and 1 more | 92 min |
| Apr 4, 6:00 PM EDT | Mesoscale Discussion | SPC | Garrett | 90 min |
| Apr 5, 2:13 AM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Charles, Dorchester, Howard and 10 more | 32 min |
| Apr 5, 3:34 AM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 15 more | 116 min |
| Apr 11, 12:24 PM EDT | Mesoscale Discussion | SPC | Garrett | 36 min |
| Apr 11, 3:44 PM EDT | Mesoscale Discussion | SPC | Garrett | 61 min |
| Apr 11, 6:43 PM EDT | Mesoscale Discussion | SPC | Carroll | 62 min |
| Apr 12, 1:56 PM EDT | Mesoscale Discussion | SPC | Somerset, Worcester | 64 min |
| Apr 16, 12:52 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Charles, Dorchester, Frederick and 10 more | 113 min |
| Apr 16, 4:29 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Cecil and 13 more | 31 min |
| Apr 16, 6:38 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 13 more | 97 min |
| Apr 16, 8:12 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Charles and 11 more | 63 min |
| Apr 16, 9:58 PM EDT | Mesoscale Discussion | SPC | Caroline, Queen Anne's | 62 min |
| Apr 19, 3:21 PM EDT | Mesoscale Discussion | SPC | Garrett | 54 min |
| Apr 23, 8:16 PM EDT | Mesoscale Discussion | SPC | Garrett | 59 min |
| Apr 24, 2:12 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 11 more | 93 min |
| Apr 24, 6:10 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Caroline, Carroll, Cecil, Charles and 9 more | 65 min |
| Apr 24, 9:02 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Charles, Dorchester, Howard, Montgomery and 5 more | 58 min |
| Apr 26, 1:18 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett, Washington | 57 min |
| Apr 26, 1:49 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett | 56 min |
| Apr 26, 4:34 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett, Washington | 56 min |
| Apr 26, 7:44 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett, Washington | 61 min |
| Apr 27, 1:24 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett | 96 min |
| Apr 27, 3:55 PM EDT | Mesoscale Discussion | SPC | Caroline, Cecil, Dorchester, Harford, Kent, Queen Anne's and 3 more | 65 min |
| Apr 27, 4:39 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 10 more | 66 min |
| Apr 27, 6:00 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Charles, Frederick and 9 more | 60 min |
| Apr 27, 6:50 PM EDT | Mesoscale Discussion | SPC | Carroll, Harford, Washington | 55 min |
| Apr 27, 7:55 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Charles, Harford and 8 more | 65 min |
| Apr 28, 12:27 AM EDT | Mesoscale Discussion | SPC | Allegany, Frederick, Howard, Montgomery, Washington | 63 min |
| Apr 28, 10:44 AM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 13 more | 61 min |
| Apr 28, 11:49 AM EDT | Mesoscale Discussion | SPC | Cecil, Kent, Queen Anne's | 56 min |
| Apr 28, 2:00 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Charles, Dorchester, Kent and 7 more | 60 min |
| Apr 28, 6:33 PM EDT | Mesoscale Discussion | SPC | Dorchester, Saint Mary's, Somerset, Wicomico, Worcester | 57 min |
| Apr 28, 8:27 PM EDT | Mesoscale Discussion | SPC | Saint Mary's, Somerset, Wicomico, Worcester | 33 min |
| May 3, 2:27 PM EDT | Mesoscale Discussion | SPC | Baltimore, Carroll, Frederick, Washington | 2 hr |
| May 3, 6:51 PM EDT | Mesoscale Discussion | SPC | Allegany, Washington | 84 min |
| May 15, 1:38 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Charles, Dorchester, Howard and 8 more | 2 hr |
| May 17, 11:14 AM EDT | Mesoscale Discussion | SPC | Calvert, Charles, Saint Mary's | 2 hr |
| May 17, 6:27 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Caroline, Carroll, Cecil, Frederick and 9 more | 2 hr |
| May 18, 11:55 AM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Calvert, Carroll, Charles, Frederick and 6 more | 65 min |
| May 18, 3:08 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 18 more | 67 min |
| May 18, 6:01 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 15 more | 89 min |
| May 19, 2:17 PM EDT | Mesoscale Discussion | SPC | Baltimore, Cecil, Harford, Kent | 58 min |
| May 23, 10:33 AM EDT | Mesoscale Discussion | SPC | Allegany, Baltimore, Carroll, Frederick, Garrett, Howard and 4 more | 87 min |
| May 23, 2:33 PM EDT | Mesoscale Discussion | SPC | Allegany, Carroll, Charles, Frederick, Howard, Montgomery and 1 more | 87 min |
| May 23, 4:40 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Cecil, Charles and 9 more | 95 min |
| May 26, 4:30 PM EDT | Mesoscale Discussion | SPC | Garrett | 60 min |
| May 27, 12:24 PM EDT | Mesoscale Discussion | SPC | Baltimore, Carroll, Frederick, Howard, Montgomery, Prince George's and 2 more | 96 min |
| May 27, 3:29 PM EDT | Mesoscale Discussion | SPC | Saint Mary's | 91 min |
| May 27, 6:14 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Carroll, Cecil, Charles, Frederick and 7 more | 2 hr |
| Jun 1, 1:37 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 12 more | 83 min |
| Jun 1, 6:27 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Charles, Dorchester, Kent and 7 more | 93 min |
| Jun 1, 8:25 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Charles, Dorchester, Prince George's and 6 more | 95 min |
| Jun 9, 1:45 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Cecil, Charles and 12 more | 90 min |
| Jun 9, 6:17 PM EDT | Mesoscale Discussion | SPC | Allegany, Baltimore, Carroll, Frederick, Garrett, Howard and 4 more | 58 min |
| Jun 9, 7:17 PM EDT | Mesoscale Discussion | SPC | Cecil | 58 min |
| Jun 10, 1:39 PM EDT | Mesoscale Discussion | SPC | Saint Mary's | 96 min |
| Jun 10, 5:28 PM EDT | Mesoscale Discussion | SPC | Baltimore, Carroll, Cecil, Frederick, Harford, Howard and 5 more | 92 min |
| Jun 11, 12:44 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Charles, Frederick, Howard, Montgomery, Prince George's | 91 min |
| Jun 12, 12:03 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Carroll, Charles, Frederick and 8 more | 87 min |
| Jun 12, 3:39 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Charles, Howard, Montgomery, Prince George's and 1 more | 96 min |
| Jun 16, 6:01 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 13 more | 89 min |
| Jun 22, 2:03 PM EDT | Mesoscale Discussion | SPC | Baltimore, Carroll, Frederick, Harford, Howard, Montgomery and 3 more | 117 min |
| Jun 24, 1:05 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Charles, Dorchester, Frederick, Howard and 6 more | 2 hr |
| Jun 24, 4:13 PM EDT | Mesoscale Discussion | SPC | Caroline, Cecil, Dorchester, Kent, Queen Anne's, Saint Mary's and 4 more | 92 min |
| Jul 3, 3:22 PM EDT | Mesoscale Discussion | SPC | Allegany, Carroll, Frederick, Garrett, Montgomery, Washington | 53 min |
| Jul 3, 8:41 PM EDT | Mesoscale Discussion | SPC | Calvert, Caroline, Charles, Dorchester, Saint Mary's, Somerset and 2 more | 64 min |
| Jul 4, 1:54 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett | 96 min |
| Jul 4, 6:44 PM EDT | Mesoscale Discussion | SPC | Saint Mary's | 61 min |
| Jul 8, 11:44 AM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 13 more | 61 min |
| Jul 8, 5:52 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 12 more | 83 min |
| Jul 11, 5:54 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett | 96 min |
| Jul 11, 7:44 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Cecil and 12 more | 61 min |
| Jul 13, 4:30 PM EDT | Mesoscale Discussion | SPC | Calvert, Charles, Dorchester, Prince George's, Saint Mary's, Talbot | 90 min |
| Jul 22, 3:17 PM EDT | Mesoscale Discussion | SPC | Allegany, Carroll, Frederick, Garrett, Howard, Montgomery and 1 more | 58 min |
| Jul 22, 5:19 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett | 56 min |
| Jul 22, 8:13 PM EDT | Mesoscale Discussion | SPC | Garrett | 62 min |
| Jul 25, 1:12 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 9 more | 2 hr |
| Jul 29, 6:17 PM EDT | Mesoscale Discussion | SPC | Allegany, Baltimore, Carroll, Cecil, Frederick, Garrett and 5 more | 88 min |
| Aug 1, 3:22 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 15 more | 83 min |
| Aug 1, 6:18 PM EDT | Mesoscale Discussion | SPC | Caroline, Cecil, Kent, Queen Anne's | 57 min |
| Aug 3, 1:03 PM EDT | Mesoscale Discussion | SPC | Calvert, Charles, Dorchester, Saint Mary's, Somerset, Wicomico | 87 min |
| Aug 7, 12:52 PM EDT | Mesoscale Discussion | SPC | Charles, Montgomery | 53 min |
| Aug 9, 7:07 PM EDT | Mesoscale Discussion | SPC | Caroline, Dorchester, Wicomico | 83 min |
| Aug 13, 2:07 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 14 more | 113 min |
| Aug 14, 3:47 PM EDT | Mesoscale Discussion | SPC | Allegany, Frederick, Washington | 58 min |
| Aug 14, 6:37 PM EDT | Mesoscale Discussion | SPC | Charles | 53 min |
| Aug 18, 6:39 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Cecil, Harford, Howard, Kent and 4 more | 96 min |
| Aug 19, 3:13 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Charles, Dorchester and 11 more | 62 min |
| Aug 19, 6:42 PM EDT | Mesoscale Discussion | SPC | Cecil | 63 min |
| Aug 21, 11:54 AM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 15 more | 2 hr |
| Aug 21, 6:42 PM EDT | Mesoscale Discussion | SPC | Somerset | 63 min |
| Aug 21, 7:12 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 14 more | 63 min |
| Aug 25, 6:24 PM EDT | Mesoscale Discussion | SPC | Saint Mary's, Somerset, Worcester | 96 min |
| Aug 27, 3:06 AM EDT | Mesoscale Discussion | SPC | Somerset, Wicomico, Worcester | 114 min |
| Aug 27, 7:52 AM EDT | Mesoscale Discussion | SPC | Somerset, Wicomico, Worcester | 113 min |
| Aug 27, 10:31 AM EDT | Mesoscale Discussion | SPC | Somerset, Wicomico, Worcester | 29 min |
| Aug 27, 1:01 PM EDT | Mesoscale Discussion | SPC | Calvert, Caroline, Dorchester, Kent, Queen Anne's, Saint Mary's and 4 more | 119 min |
| Aug 27, 4:44 PM EDT | Mesoscale Discussion | SPC | Somerset, Wicomico, Worcester | 2 hr |
| Sep 4, 3:15 PM EDT | Mesoscale Discussion | SPC | Garrett | 60 min |
| Sep 7, 10:06 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Charles, Prince George's, Saint Mary's | 114 min |
| Sep 8, 6:21 PM EDT | Mesoscale Discussion | SPC | Charles, Montgomery | 114 min |
| Sep 11, 6:38 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 18 more | 97 min |
| Sep 14, 3:22 PM EDT | Mesoscale Discussion | SPC | Allegany, Baltimore, Carroll, Frederick, Garrett, Harford and 3 more | 53 min |
| Sep 28, 4:45 PM EDT | Mesoscale Discussion | SPC | Baltimore, Cecil, Harford, Kent, City of Baltimore | 60 min |
| Oct 13, 6:53 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Charles, Dorchester, Howard, Montgomery and 3 more | 97 min |
| Oct 19, 6:26 PM EDT | Mesoscale Discussion | SPC | Saint Mary's, Somerset | 2 hr |
| Oct 29, 12:34 AM EDT | Mesoscale Discussion | SPC | Allegany, Carroll, Frederick, Garrett, Washington | 6 hr |
| Oct 29, 7:36 AM EDT | Mesoscale Discussion | SPC | Allegany, Frederick, Washington | 5 hr |
| Dec 7, 2:44 PM EST | Mesoscale Discussion | SPC | Allegany, Garrett | 3 hr |
| Dec 7, 7:19 PM EST | Mesoscale Discussion | SPC | Calvert, Caroline, Dorchester, Queen Anne's, Saint Mary's, Somerset and 3 more | 26 min |
| Dec 7, 8:45 PM EST | Mesoscale Discussion | SPC | Somerset, Wicomico, Worcester | 60 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Howard County56
- Charles County55
- Montgomery County55
- Prince George's County54
- City of Baltimore50
- Saint Mary's County50
- Anne Arundel County49
- Frederick County49
- Washington County47
- Baltimore County46
- Calvert County46
- Carroll County46
- Queen Anne's County46
- Kent County45
- Talbot County44
- Harford County41
- Dorchester County39
- Allegany County38
- Caroline County38
- Cecil County36
- Garrett County35
- Wicomico County33
- Somerset County33
- Worcester County22
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20102012
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.