Alert archive / Maryland / Severe Thunderstorm Watches
Severe Thunderstorm Watches in Maryland, 2018
12 severe thunderstorm watches 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 severe thunderstorm watches reaches back to 1997.
Severe Thunderstorm Watches by county
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Severe Thunderstorm Watches
- 12
- Busiest month
- May8 severe thunderstorm watches
- Busiest day
- May 14, 20182 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 |
|---|---|---|---|---|
| May 10, 1:14 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Calvert, Carroll, Charles, Dorchester and 8 more | 8 hr |
| May 12, 2:47 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Calvert, Charles, Frederick, Garrett, Montgomery and 3 more | 8 hr |
| May 13, 4:28 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Garrett, Washington | 7 hr |
| May 14, 12:29 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 9 more | 9 hr |
| May 14, 6:11 PM EDT | Severe Thunderstorm Watch | SPC | Dorchester, Somerset, Wicomico, Worcester | 4 hr |
| May 15, 1:46 PM EDT | Severe Thunderstorm Watch | SPC | Caroline, Cecil, Kent, Queen Anne's, Talbot | 9 hr |
| May 15, 5:54 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Carroll, Frederick, Harford, Howard and 3 more | 4 hr |
| May 22, 2:33 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Calvert, Charles, Howard, Montgomery, Prince George's and 1 more | 6 hr |
| Jul 27, 1:17 PM EDT | Severe Thunderstorm Watch | SPC | Caroline, Cecil, Kent, Queen Anne's, Talbot | 9 hr |
| Jul 27, 1:52 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Charles and 12 more | 7 hr |
| Aug 21, 2:41 PM EDT | Severe Thunderstorm Watch | SPC | Allegany, Carroll, Frederick, Garrett, Washington | 7 hr |
| Sep 26, 5:02 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 10 more | 4 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Frederick County7
- Montgomery County7
- Prince George's County7
- Anne Arundel County6
- Calvert County6
- Carroll County6
- Charles County6
- Howard County6
- Washington County6
- Baltimore County5
- Harford County5
- Saint Mary's County5
- City of Baltimore5
- Allegany County5
- Garrett County4
- Dorchester County3
- Caroline County3
- Cecil County3
- Kent County3
- Queen Anne's County3
- Talbot County3
- Somerset County2
- Wicomico County2
- Worcester County2
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.