Alert archive / Maryland / Mesoscale Discussions
Mesoscale Discussions in Maryland, 2017
62 mesoscale discussions in 2017. 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 2017. Tap one for its archive.
- Mesoscale Discussions
- 62
- Busiest month
- July15 mesoscale discussions
- Busiest day
- March 1, 20174 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 7, 8:11 AM EST | Mesoscale Discussion | SPC | Dorchester, Somerset, Wicomico, Worcester | 4 hr |
| Feb 25, 12:24 PM EST | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 15 more | 2 hr |
| Feb 25, 4:26 PM EST | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Cecil, Dorchester, Harford and 7 more | 94 min |
| Mar 1, 9:44 AM EST | Mesoscale Discussion | SPC | Allegany, Baltimore, Carroll, Charles, Frederick, Garrett and 6 more | 91 min |
| Mar 1, 12:25 PM EST | Mesoscale Discussion | SPC | Baltimore, Carroll, Frederick, Howard, Montgomery, Washington and 1 more | 65 min |
| Mar 1, 12:50 PM EST | Mesoscale Discussion | SPC | Caroline, Dorchester, Saint Mary's, Somerset, Wicomico, Worcester | 55 min |
| Mar 1, 2:50 PM EST | Mesoscale Discussion | SPC | Caroline, Cecil, Dorchester, Queen Anne's, Somerset, Talbot and 2 more | 55 min |
| Mar 13, 10:01 PM EDT | Mesoscale Discussion | SPC | Baltimore, Carroll, Cecil, Frederick, Harford, Howard and 3 more | 4 hr |
| Mar 14, 3:22 AM EDT | Mesoscale Discussion | SPC | Allegany, Baltimore, Carroll, Cecil, Frederick, Garrett and 5 more | 5 hr |
| Apr 6, 5:59 AM EDT | Mesoscale Discussion | SPC | Calvert, Charles, Dorchester, Saint Mary's | 91 min |
| Apr 6, 12:18 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Cecil, Charles, Dorchester and 9 more | 57 min |
| Apr 6, 3:12 PM EDT | Mesoscale Discussion | SPC | Cecil, Kent | 63 min |
| Apr 20, 2:40 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett, Washington | 65 min |
| Apr 21, 4:19 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Charles, Howard, Montgomery, Prince George's and 1 more | 56 min |
| Apr 30, 2:58 PM EDT | Mesoscale Discussion | SPC | Garrett | 2 hr |
| Apr 30, 3:25 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 12 more | 95 min |
| May 1, 11:59 AM EDT | Mesoscale Discussion | SPC | Garrett | 2 hr |
| May 1, 4:36 PM EDT | Mesoscale Discussion | SPC | Allegany | 84 min |
| May 1, 8:28 PM EDT | Mesoscale Discussion | SPC | Baltimore, Carroll, Charles, Frederick, Howard, Montgomery and 2 more | 92 min |
| May 5, 6:15 PM EDT | Mesoscale Discussion | SPC | Frederick, Montgomery, Washington | 90 min |
| May 19, 3:36 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 10 more | 114 min |
| May 25, 12:59 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Charles, Dorchester, Howard, Montgomery and 6 more | 61 min |
| May 30, 12:03 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett | 2 hr |
| Jun 14, 2:20 PM EDT | Mesoscale Discussion | SPC | Garrett | 2 hr |
| Jun 19, 12:14 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Cecil, Charles and 10 more | 2 hr |
| Jun 19, 2:21 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Cecil, Charles, Harford and 5 more | 114 min |
| Jun 21, 2:38 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Caroline, Carroll, Cecil and 11 more | 3 hr |
| Jun 23, 4:53 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett, Washington | 2 hr |
| Jun 23, 8:25 PM EDT | Mesoscale Discussion | SPC | Allegany, Baltimore, Carroll, Cecil, Frederick, Garrett and 6 more | 65 min |
| Jul 1, 12:54 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Carroll, Cecil, Frederick, Harford and 5 more | 66 min |
| Jul 1, 4:10 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Cecil, Frederick and 8 more | 2 hr |
| Jul 7, 3:35 PM EDT | Mesoscale Discussion | SPC | Garrett | 85 min |
| Jul 13, 11:09 AM EDT | Mesoscale Discussion | SPC | Baltimore, Cecil, Harford, Kent, Queen Anne's | 2 hr |
| Jul 13, 3:03 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Cecil, Charles, Dorchester and 8 more | 57 min |
| Jul 14, 1:09 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 16 more | 2 hr |
| Jul 14, 4:23 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 18 more | 67 min |
| Jul 14, 7:00 PM EDT | Mesoscale Discussion | SPC | Somerset, Wicomico, Worcester | 60 min |
| Jul 18, 2:31 PM EDT | Mesoscale Discussion | SPC | Baltimore, Carroll, Frederick, Howard, Montgomery, Washington | 59 min |
| Jul 22, 8:34 AM EDT | Mesoscale Discussion | SPC | Garrett | 86 min |
| Jul 22, 1:12 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 12 more | 3 hr |
| Jul 23, 3:44 PM EDT | Mesoscale Discussion | SPC | Baltimore, Carroll, Cecil, Harford, Kent, Queen Anne's and 1 more | 3 hr |
| Jul 24, 12:41 AM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Cecil, Harford, Kent, Queen Anne's and 1 more | 2 hr |
| Jul 24, 2:17 PM EDT | Mesoscale Discussion | SPC | Allegany, Baltimore, Carroll, Cecil, Frederick, Garrett and 6 more | 118 min |
| Jul 24, 6:09 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 14 more | 3 hr |
| Aug 2, 1:30 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Carroll, Cecil, Frederick, Harford and 6 more | 2 hr |
| Aug 3, 6:28 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Carroll, Cecil, Frederick, Harford and 6 more | 62 min |
| Aug 4, 7:41 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett | 2 hr |
| Aug 7, 12:16 PM EDT | Mesoscale Discussion | SPC | Calvert, Caroline, Dorchester, Saint Mary's, Somerset, Talbot and 2 more | 2 hr |
| Aug 7, 4:17 PM EDT | Mesoscale Discussion | SPC | Dorchester, Saint Mary's, Somerset, Wicomico, Worcester | 118 min |
| Aug 11, 3:48 PM EDT | Mesoscale Discussion | SPC | Allegany, Baltimore, Carroll, Frederick, Howard, Montgomery and 3 more | 87 min |
| Aug 12, 5:17 PM EDT | Mesoscale Discussion | SPC | Baltimore, Carroll, Cecil, Frederick, Harford, Howard and 2 more | 88 min |
| Aug 12, 8:25 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Charles, Dorchester, Kent and 4 more | 95 min |
| Aug 18, 1:54 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 10 more | 2 hr |
| Aug 18, 4:34 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 10 more | 86 min |
| Aug 18, 8:03 PM EDT | Mesoscale Discussion | SPC | Calvert, Caroline, Dorchester, Saint Mary's, Somerset, Talbot and 2 more | 57 min |
| Aug 19, 8:16 PM EDT | Mesoscale Discussion | SPC | Allegany, Baltimore, Carroll, Frederick, Garrett, Howard and 2 more | 59 min |
| Aug 21, 2:53 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Charles, Frederick and 7 more | 2 hr |
| Aug 22, 3:08 PM EDT | Mesoscale Discussion | SPC | Carroll | 67 min |
| Aug 22, 10:53 PM EDT | Mesoscale Discussion | SPC | Cecil | 97 min |
| Sep 5, 2:31 PM EDT | Mesoscale Discussion | SPC | Carroll, Frederick, Howard, Montgomery, Washington | 59 min |
| Sep 5, 5:00 PM EDT | Mesoscale Discussion | SPC | Baltimore, Carroll, Cecil, Harford, Howard, Kent and 2 more | 90 min |
| Dec 8, 2:52 PM EST | Mesoscale Discussion | SPC | Dorchester, Saint Mary's, Somerset, Wicomico, Worcester | 5 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Baltimore County32
- Howard County31
- Montgomery County31
- City of Baltimore31
- Carroll County30
- Cecil County30
- Harford County29
- Frederick County27
- Kent County26
- Prince George's County25
- Anne Arundel County24
- Calvert County22
- Queen Anne's County22
- Washington County22
- Talbot County21
- Dorchester County20
- Charles County20
- Saint Mary's County19
- Caroline County18
- Garrett County17
- Wicomico County16
- Somerset County15
- Allegany County15
- Worcester County13
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20162018
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.