Alert archive / Maryland / Mesoscale Discussions
Mesoscale Discussions in Maryland, 2018
65 mesoscale discussions in 2018. 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 2018. Tap one for its archive.
- Mesoscale Discussions
- 65
- Busiest month
- May20 mesoscale discussions
- Busiest day
- May 12, 20184 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 3, 9:04 PM EST | Mesoscale Discussion | SPC | Dorchester, Somerset, Wicomico | 6 hr |
| Jan 12, 7:04 PM EST | Mesoscale Discussion | SPC | Allegany, Garrett | 6 hr |
| Feb 7, 5:28 AM EST | Mesoscale Discussion | SPC | Allegany, Garrett, Washington | 5 hr |
| Feb 11, 3:52 PM EST | Mesoscale Discussion | SPC | Dorchester, Saint Mary's, Somerset, Wicomico, Worcester | 2 hr |
| Feb 17, 1:51 PM EST | Mesoscale Discussion | SPC | Washington | 4 hr |
| Mar 20, 12:19 PM EDT | Mesoscale Discussion | SPC | Baltimore, Carroll, Cecil, Frederick, Harford, Howard and 3 more | 4 hr |
| Apr 2, 3:47 AM EDT | Mesoscale Discussion | SPC | Washington | 6 hr |
| Apr 3, 6:38 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett | 2 hr |
| Apr 4, 1:27 PM EDT | Mesoscale Discussion | SPC | Calvert, Caroline, Dorchester, Saint Mary's, Somerset, Talbot and 2 more | 3 hr |
| May 10, 12:36 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Charles, Howard, Kent, Montgomery and 5 more | 114 min |
| May 10, 4:53 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Charles, Frederick and 7 more | 67 min |
| May 12, 1:51 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett | 2 hr |
| May 12, 3:59 PM EDT | Mesoscale Discussion | SPC | Baltimore, Carroll, Cecil, Harford, Howard, Kent and 3 more | 3 hr |
| May 12, 5:05 PM EDT | Mesoscale Discussion | SPC | Allegany, Frederick, Garrett, Washington | 115 min |
| May 12, 7:16 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Caroline, Carroll, Cecil, Harford and 5 more | 59 min |
| May 12, 9:14 PM EDT | Mesoscale Discussion | SPC | Caroline, Talbot | 61 min |
| May 13, 1:56 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett | 2 hr |
| May 13, 7:00 PM EDT | Mesoscale Discussion | SPC | Charles, Garrett | 60 min |
| May 14, 11:56 AM EDT | Mesoscale Discussion | SPC | Allegany, Carroll, Frederick, Garrett, Howard, Montgomery and 1 more | 64 min |
| May 14, 3:26 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 10 more | 2 hr |
| May 14, 5:37 PM EDT | Mesoscale Discussion | SPC | Somerset | 53 min |
| May 14, 7:22 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Charles, Howard, Prince George's, Saint Mary's and 1 more | 53 min |
| May 15, 3:33 PM EDT | Mesoscale Discussion | SPC | Cecil, Harford | 117 min |
| May 15, 5:43 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Charles, Dorchester and 10 more | 92 min |
| May 15, 8:41 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Charles, Dorchester and 7 more | 94 min |
| May 22, 1:52 PM EDT | Mesoscale Discussion | SPC | Calvert, Charles, Prince George's, Saint Mary's | 113 min |
| May 22, 4:50 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Charles, Montgomery, Prince George's, Saint Mary's | 115 min |
| May 22, 7:24 PM EDT | Mesoscale Discussion | SPC | Calvert, Saint Mary's | 96 min |
| May 27, 1:29 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Charles, Dorchester and 9 more | 3 hr |
| Jun 5, 3:05 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Caroline, Carroll, Cecil and 8 more | 2 hr |
| Jun 9, 1:34 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 16 more | 2 hr |
| Jun 10, 3:23 PM EDT | Mesoscale Discussion | SPC | Charles | 2 hr |
| Jun 19, 12:04 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Charles and 10 more | 116 min |
| Jun 20, 3:23 PM EDT | Mesoscale Discussion | SPC | Garrett | 2 hr |
| Jun 23, 1:38 PM EDT | Mesoscale Discussion | SPC | Dorchester, Saint Mary's, Somerset, Wicomico, Worcester | 67 min |
| Jun 23, 5:40 PM EDT | Mesoscale Discussion | SPC | Calvert, Charles, Dorchester, Prince George's, Saint Mary's, Somerset and 1 more | 2 hr |
| Jun 24, 2:04 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Charles, Montgomery, Prince George's, Saint Mary's | 116 min |
| Jun 24, 6:16 PM EDT | Mesoscale Discussion | SPC | Baltimore, Cecil, Harford, Kent, City of Baltimore | 119 min |
| Jun 27, 7:37 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 15 more | 3 hr |
| Jul 2, 1:03 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett, Washington | 72 min |
| Jul 22, 12:12 PM EDT | Mesoscale Discussion | SPC | Calvert, Charles, Saint Mary's | 2 hr |
| Jul 23, 2:57 AM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Charles, Dorchester, Prince George's and 5 more | 3 hr |
| Jul 23, 2:40 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 15 more | 3 hr |
| Jul 27, 1:28 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Charles, Frederick, Howard, Montgomery, Prince George's | 62 min |
| Jul 27, 4:50 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 13 more | 55 min |
| Jul 27, 7:06 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Cecil, Charles and 13 more | 54 min |
| Aug 1, 3:15 PM EDT | Mesoscale Discussion | SPC | Allegany, Carroll, Frederick, Garrett, Montgomery, Washington | 3 hr |
| Aug 2, 11:46 AM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Carroll, Cecil, Charles, Harford and 5 more | 119 min |
| Aug 13, 1:57 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett | 3 hr |
| Aug 17, 3:10 PM EDT | Mesoscale Discussion | SPC | Charles, Frederick, Howard, Montgomery, Prince George's | 3 hr |
| Aug 21, 2:16 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett | 119 min |
| Aug 21, 4:56 PM EDT | Mesoscale Discussion | SPC | Allegany, Carroll, Frederick, Garrett, Montgomery, Washington | 2 hr |
| Aug 21, 5:03 PM EDT | Mesoscale Discussion | SPC | Charles, Saint Mary's | 117 min |
| Aug 21, 7:06 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Carroll, Cecil, Frederick, Harford and 7 more | 84 min |
| Sep 17, 3:25 PM EDT | Mesoscale Discussion | SPC | Calvert, Charles, Saint Mary's | 2 hr |
| Sep 17, 7:09 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Charles, Prince George's, Saint Mary's, Talbot and 1 more | 2 hr |
| Sep 26, 3:40 PM EDT | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Cecil and 11 more | 3 hr |
| Oct 11, 12:48 PM EDT | Mesoscale Discussion | SPC | Somerset | 117 min |
| Oct 11, 6:16 PM EDT | Mesoscale Discussion | SPC | Dorchester, Somerset, Wicomico, Worcester | 89 min |
| Oct 11, 8:02 PM EDT | Mesoscale Discussion | SPC | Somerset | 58 min |
| Nov 2, 6:55 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Calvert, Caroline, Cecil, Charles, Dorchester and 7 more | 95 min |
| Nov 6, 12:11 PM EST | Mesoscale Discussion | SPC | Calvert, Caroline, Dorchester, Saint Mary's, Somerset, Talbot and 2 more | 94 min |
| Nov 15, 3:18 AM EST | Mesoscale Discussion | SPC | Allegany, Anne Arundel, Carroll, Frederick, Garrett, Howard and 4 more | 6 hr |
| Nov 15, 9:56 AM EST | Mesoscale Discussion | SPC | Allegany, Baltimore, Carroll, Cecil, Frederick, Garrett and 5 more | 6 hr |
| Dec 21, 4:16 PM EST | Mesoscale Discussion | SPC | Carroll, Frederick, Howard, Montgomery, Washington | 59 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Montgomery County29
- Charles County29
- Saint Mary's County26
- Howard County26
- Calvert County26
- Prince George's County26
- Anne Arundel County25
- City of Baltimore23
- Washington County22
- Carroll County21
- Frederick County21
- Baltimore County20
- Harford County20
- Talbot County20
- Allegany County18
- Kent County18
- Dorchester County17
- Garrett County17
- Somerset County16
- Cecil County16
- Caroline County15
- Queen Anne's County15
- Wicomico County12
- Worcester County8
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20172019
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.