Alert archive / Maryland / Mesoscale Discussions
Mesoscale Discussions in Maryland, 2012
89 mesoscale discussions in 2012. 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 2012. Tap one for its archive.
- Mesoscale Discussions
- 89
- Busiest month
- July25 mesoscale discussions
- Busiest day
- September 18, 20128 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 21, 7:07 AM EST | Mesoscale Discussion | SPC | Baltimore, Cecil, Harford, City of Baltimore | 3 hr |
| Feb 24, 12:43 PM EST | Mesoscale Discussion | SPC | Calvert, Charles, Saint Mary's, Somerset | 92 min |
| Feb 24, 4:45 PM EST | Mesoscale Discussion | SPC | Somerset, Worcester | 90 min |
| Mar 28, 10:23 AM EDT | Mesoscale Discussion | SPC | Allegany, Frederick, Garrett, Montgomery, Washington | 2 hr |
| Mar 28, 12:43 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett | 2 hr |
| May 2, 4:56 PM EDT | Mesoscale Discussion | SPC | Allegany, Frederick, Garrett, Washington | 2 hr |
| May 3, 5:45 PM EDT | Mesoscale Discussion | SPC | Washington | 60 min |
| May 4, 1:26 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 13 more | 2 hr |
| May 15, 2:08 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Charles, Dorchester, Montgomery, Prince George's and 1 more | 67 min |
| May 24, 1:33 PM EDT | Mesoscale Discussion | SPC | Charles | 87 min |
| May 27, 1:41 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett, Washington | 64 min |
| May 27, 6:34 PM EDT | Mesoscale Discussion | SPC | Allegany, Baltimore, Carroll, Frederick, Garrett, Howard and 3 more | 56 min |
| May 29, 4:22 PM EDT | Mesoscale Discussion | SPC | Frederick, Washington | 53 min |
| May 29, 7:48 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Charles, Kent, Prince George's | 57 min |
| Jun 1, 12:29 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Carroll, Charles, Frederick, Howard and 5 more | 61 min |
| Jun 1, 1:03 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 11 more | 87 min |
| Jun 1, 3:35 PM EDT | Mesoscale Discussion | SPC | Allegany, Frederick, Garrett, Washington | 55 min |
| Jun 1, 3:49 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 11 more | 56 min |
| Jun 1, 6:54 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 14 more | 2 hr |
| Jun 3, 1:37 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 13 more | 2 hr |
| Jun 22, 12:18 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 17 more | 2 hr |
| Jun 22, 4:10 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Charles, Dorchester, Kent and 7 more | 2 hr |
| Jun 22, 6:42 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 16 more | 63 min |
| Jun 25, 10:44 AM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Charles, Dorchester, Kent and 6 more | 61 min |
| Jun 25, 3:57 PM EDT | Mesoscale Discussion | SPC | Saint Mary's, Somerset, Wicomico, Worcester | 63 min |
| Jun 29, 6:03 PM EDT | Mesoscale Discussion | SPC | Allegany, Charles, Frederick, Garrett, Montgomery, Prince George's and 1 more | 87 min |
| Jun 29, 7:51 PM EDT | Mesoscale Discussion | SPC | Allegany, Frederick, Garrett, Montgomery, Washington | 114 min |
| Jun 29, 10:51 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 14 more | 84 min |
| Jun 30, 4:27 PM EDT | Mesoscale Discussion | SPC | Montgomery | 3 hr |
| Jun 30, 7:39 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Charles, Dorchester, Kent and 7 more | 3 hr |
| Jul 1, 8:32 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett | 88 min |
| Jul 1, 10:26 PM EDT | Mesoscale Discussion | SPC | Garrett | 94 min |
| Jul 2, 12:39 AM EDT | Mesoscale Discussion | SPC | Montgomery | 96 min |
| Jul 3, 5:58 PM EDT | Mesoscale Discussion | SPC | Allegany, Frederick, Washington | 3 hr |
| Jul 4, 4:04 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett | 56 min |
| Jul 4, 8:05 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett, Washington | 55 min |
| Jul 5, 3:29 AM EDT | Mesoscale Discussion | SPC | Calvert, Charles, Saint Mary's, Somerset | 91 min |
| Jul 5, 4:37 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Carroll, Cecil, Frederick, Harford and 6 more | 113 min |
| Jul 7, 5:43 PM EDT | Mesoscale Discussion | SPC | Baltimore, Carroll, Cecil, Frederick, Harford, Kent and 2 more | 62 min |
| Jul 8, 12:47 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Charles, Dorchester, Frederick and 11 more | 88 min |
| Jul 8, 1:29 PM EDT | Mesoscale Discussion | SPC | Garrett | 61 min |
| Jul 8, 4:21 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Charles, Dorchester, Howard and 10 more | 54 min |
| Jul 8, 6:00 PM EDT | Mesoscale Discussion | SPC | Dorchester, Saint Mary's, Somerset, Wicomico, Worcester | 60 min |
| Jul 9, 12:09 AM EDT | Mesoscale Discussion | SPC | Calvert, Charles, Montgomery, Prince George's, Saint Mary's | 96 min |
| Jul 18, 3:44 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 13 more | 91 min |
| Jul 19, 6:53 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Caroline, Carroll, Cecil, Dorchester and 12 more | 97 min |
| Jul 24, 11:48 AM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 15 more | 87 min |
| Jul 24, 1:42 PM EDT | Mesoscale Discussion | SPC | Calvert, Dorchester, Saint Mary's, Somerset, Wicomico, Worcester | 2 hr |
| Jul 26, 3:08 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Charles and 14 more | 2 hr |
| Jul 26, 3:37 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett, Washington | 113 min |
| Jul 26, 6:06 PM EDT | Mesoscale Discussion | SPC | Garrett | 84 min |
| Jul 26, 9:06 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 10 more | 84 min |
| Jul 28, 12:26 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 15 more | 2 hr |
| Jul 28, 4:18 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 16 more | 87 min |
| Jul 28, 8:00 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Cecil, Dorchester, Harford and 6 more | 30 min |
| Aug 5, 2:49 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 11 more | 86 min |
| Aug 5, 6:38 PM EDT | Mesoscale Discussion | SPC | Caroline, Queen Anne's | 2 hr |
| Aug 10, 8:21 AM EDT | Mesoscale Discussion | SPC | Caroline, Cecil, Dorchester, Kent, Queen Anne's, Somerset and 3 more | 2 hr |
| Aug 10, 3:31 PM EDT | Mesoscale Discussion | SPC | Carroll, Frederick, Montgomery, Washington | 89 min |
| Aug 10, 7:31 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 12 more | 119 min |
| Aug 14, 2:07 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Carroll, Frederick, Harford, Howard and 4 more | 113 min |
| Aug 14, 9:57 PM EDT | Mesoscale Discussion | SPC | Baltimore, Carroll, Cecil, Frederick, Harford, Howard and 3 more | 2 hr |
| Aug 25, 11:22 AM EDT | Mesoscale Discussion | SPC | Somerset, Worcester | 113 min |
| Aug 25, 4:46 PM EDT | Mesoscale Discussion | SPC | Somerset, Wicomico, Worcester | 89 min |
| Aug 26, 12:52 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Charles and 14 more | 83 min |
| Sep 5, 2:12 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Charles, Kent, Prince George's and 2 more | 63 min |
| Sep 8, 5:00 AM EDT | Mesoscale Discussion | SPC | Allegany, Garrett | 60 min |
| Sep 8, 11:38 AM EDT | Mesoscale Discussion | SPC | Allegany, Baltimore, Carroll, Frederick, Howard, Montgomery and 2 more | 97 min |
| Sep 8, 2:12 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 9 more | 93 min |
| Sep 8, 3:25 PM EDT | Mesoscale Discussion | SPC | Saint Mary's, Somerset | 65 min |
| Sep 8, 4:22 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Cecil, Charles, Dorchester and 6 more | 53 min |
| Sep 18, 8:49 AM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Charles, Frederick and 8 more | 116 min |
| Sep 18, 11:14 AM EDT | Mesoscale Discussion | SPC | Cecil | 91 min |
| Sep 18, 11:19 AM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 13 more | 86 min |
| Sep 18, 1:27 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Charles, Dorchester and 10 more | 63 min |
| Sep 18, 1:56 PM EDT | Mesoscale Discussion | SPC | Cecil, Harford | 64 min |
| Sep 18, 3:52 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Charles, Dorchester, Howard and 7 more | 113 min |
| Sep 18, 4:21 PM EDT | Mesoscale Discussion | SPC | Caroline, Cecil | 114 min |
| Sep 18, 6:15 PM EDT | Mesoscale Discussion | SPC | Somerset, Wicomico, Worcester | 30 min |
| Sep 22, 3:09 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 10 more | 2 hr |
| Sep 27, 3:18 PM EDT | Mesoscale Discussion | SPC | Baltimore, Carroll, Frederick, Howard, Montgomery, Prince George's and 2 more | 117 min |
| Sep 27, 6:16 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Frederick, Howard, Montgomery, Prince George's, City of Baltimore | 29 min |
| Sep 27, 8:57 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Charles, Howard, Montgomery, Prince George's and 1 more | 63 min |
| Oct 19, 4:48 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Cecil, Frederick and 8 more | 87 min |
| Oct 29, 2:51 PM EDT | Mesoscale Discussion | SPC | Garrett | 6 hr |
| Oct 30, 4:34 AM EDT | Mesoscale Discussion | SPC | Garrett | 4 hr |
| Oct 30, 1:02 PM EDT | Mesoscale Discussion | SPC | Garrett | 5 hr |
| Dec 24, 10:34 AM EST | Mesoscale Discussion | SPC | Garrett | 2 hr |
| Dec 26, 12:48 PM EST | Mesoscale Discussion | SPC | Allegany, Carroll, Frederick, Garrett, Washington | 6 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Montgomery County42
- Prince George's County41
- Anne Arundel County40
- Calvert County39
- Charles County39
- Frederick County39
- City of Baltimore38
- Howard County36
- Kent County35
- Carroll County34
- Queen Anne's County34
- Baltimore County33
- Saint Mary's County33
- Washington County33
- Talbot County33
- Caroline County31
- Cecil County29
- Harford County29
- Dorchester County28
- Somerset County27
- Garrett County24
- Wicomico County24
- Worcester County23
- Allegany County21
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20112013
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.