Alert archive / Maryland / Severe Thunderstorm Watches
Severe Thunderstorm Watches in Maryland, 2011
34 severe thunderstorm watches 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 severe thunderstorm watches reaches back to 1997.
Severe Thunderstorm Watches by county
Each county as a circle sized by its count in 2011. Tap one for its archive.
- Severe Thunderstorm Watches
- 34
- Busiest month
- July8 severe thunderstorm watches
- Busiest day
- April 28, 20113 severe thunderstorm watches
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 |
|---|---|---|---|---|
| Feb 25, 12:19 PM EST | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Cecil, Charles and 9 more | 3 hr |
| Mar 10, 1:25 PM EST | Severe Thunderstorm Watch | SPC | Anne Arundel, Calvert, Charles, Howard, Montgomery, Prince George's and 1 more | 7 hr |
| Mar 23, 4:13 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Carroll, Frederick, Howard, Montgomery, Washington | 5 hr |
| Apr 5, 5:07 AM EDT | Severe Thunderstorm Watch | SPC | Cecil | 2 hr |
| Apr 24, 3:40 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 11 more | 5 hr |
| Apr 26, 1:49 PM EDT | Severe Thunderstorm Watch | SPC | Garrett | 7 hr |
| Apr 26, 2:09 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Washington | 7 hr |
| Apr 27, 8:15 PM EDT | Severe Thunderstorm Watch | SPC | Caroline, Cecil, Kent, Queen Anne's, Talbot | 8 hr |
| Apr 28, 4:05 AM EDT | Severe Thunderstorm Watch | SPC | Caroline, Cecil, Kent, Queen Anne's, Talbot | 6 hr |
| Apr 28, 9:45 AM EDT | Severe Thunderstorm Watch | SPC | Caroline, Cecil, Kent, Queen Anne's, Talbot | 6 hr |
| May 3, 3:47 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Washington | 6 hr |
| May 18, 12:55 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 18 more | 8 hr |
| May 23, 10:48 AM EDT | Severe Thunderstorm Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 8 more | 9 hr |
| May 24, 12:42 PM EDT | Severe Thunderstorm Watch | SPC | Calvert, Charles, Dorchester, Saint Mary's, Somerset, Wicomico and 1 more | 5 hr |
| May 26, 1:42 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Garrett, Washington | 11 hr |
| May 27, 12:57 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 8 more | 9 hr |
| Jun 1, 2:24 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 17 more | 7 hr |
| Jun 9, 12:53 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Baltimore, Carroll, Frederick, Garrett, Harford and 4 more | 7 hr |
| Jun 9, 2:34 PM EDT | Severe Thunderstorm Watch | SPC | Cecil | 7 hr |
| Jun 12, 1:48 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Caroline, Carroll and 14 more | 6 hr |
| Jun 24, 12:46 PM EDT | Severe Thunderstorm Watch | SPC | Caroline, Cecil, Kent, Queen Anne's, Talbot | 7 hr |
| Jun 24, 2:25 PM EDT | Severe Thunderstorm Watch | SPC | Calvert, Dorchester, Saint Mary's, Somerset, Wicomico, Worcester | 4 hr |
| Jul 3, 4:21 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 8 more | 7 hr |
| Jul 4, 2:34 PM EDT | Severe Thunderstorm Watch | SPC | Calvert, Charles, Dorchester, Saint Mary's, Somerset, Wicomico and 1 more | 6 hr |
| Jul 8, 1:51 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 11 more | 7 hr |
| Jul 11, 5:47 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 8 more | 5 hr |
| Jul 11, 9:01 PM EDT | Severe Thunderstorm Watch | SPC | Caroline, Cecil, Dorchester, Kent, Queen Anne's, Talbot and 1 more | 3 hr |
| Jul 13, 2:21 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Calvert, Caroline, Charles, Dorchester, Howard and 8 more | 8 hr |
| Jul 18, 3:57 PM EDT | Severe Thunderstorm Watch | SPC | Garrett | 6 hr |
| Jul 22, 5:37 PM EDT | Severe Thunderstorm Watch | SPC | Garrett | 4 hr |
| Aug 21, 12:52 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 12 more | 8 hr |
| Aug 21, 2:06 PM EDT | Severe Thunderstorm Watch | SPC | Dorchester, Somerset, Wicomico, Worcester | 7 hr |
| Aug 25, 3:23 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Calvert, Charles, Dorchester, Prince George's, Saint Mary's and 3 more | 5 hr |
| Dec 7, 5:56 PM EST | Severe Thunderstorm Watch | SPC | Dorchester, Somerset, Wicomico, Worcester | 4 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Calvert County17
- Saint Mary's County17
- Charles County16
- Howard County15
- Montgomery County15
- Anne Arundel County14
- Cecil County14
- Prince George's County14
- Caroline County13
- Queen Anne's County13
- Talbot County13
- Washington County13
- Baltimore County12
- Harford County12
- Kent County12
- City of Baltimore12
- Allegany County12
- Carroll County12
- Frederick County12
- Dorchester County11
- Wicomico County10
- Somerset County9
- Worcester County9
- Garrett County6
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.