Alert archive / Maryland / Severe Thunderstorm Warnings / 2021
Severe Thunderstorm Warnings in Maryland, May 2021
38 severe thunderstorm warnings in May 2021. 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 warnings reaches back to 1986.
Severe Thunderstorm Warnings by county
Each county as a circle sized by its count in May 2021. Tap one for its archive.
- Severe Thunderstorm Warnings
- 38
- Busiest day
- May 26, 202116 severe thunderstorm warnings
Over time
By day
Days in UTC, the clock the archive keeps.
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 3, 4:00 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 26 min |
| May 3, 6:50 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 40 min |
| May 3, 8:49 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick | 26 min |
| May 4, 12:12 PM EDT | Severe Thunderstorm Warning | LWX | Garrett | 48 min |
| May 4, 4:55 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Montgomery, Prince George's | 50 min |
| May 4, 5:27 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's | 33 min |
| May 4, 5:49 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Saint Mary's | 56 min |
| May 4, 5:54 PM EDT | Severe Thunderstorm Warning | PHI | Queen Anne's, Talbot | 51 min |
| May 4, 6:32 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 43 min |
| May 4, 7:04 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 41 min |
| May 4, 7:07 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Somerset, Wicomico | 38 min |
| May 4, 7:38 PM EDT | Severe Thunderstorm Warning | AKQ | Somerset, Wicomico, Worcester | 67 min |
| May 5, 2:40 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 50 min |
| May 5, 3:17 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Saint Mary's | 43 min |
| May 5, 3:39 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 61 min |
| May 5, 5:28 PM EDT | Severe Thunderstorm Warning | AKQ | Worcester | 21 min |
| May 26, 2:51 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 39 min |
| May 26, 3:21 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 39 min |
| May 26, 3:31 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 44 min |
| May 26, 3:40 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 28 min |
| May 26, 3:56 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick | 49 min |
| May 26, 3:59 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 9 min |
| May 26, 4:54 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 66 min |
| May 26, 5:00 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Howard, Montgomery, Prince George's | 45 min |
| May 26, 5:26 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Harford, Howard, City of Baltimore | 49 min |
| May 26, 5:52 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's | 38 min |
| May 26, 6:17 PM EDT | Severe Thunderstorm Warning | LWX | Cecil, Harford | 58 min |
| May 26, 6:51 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery, Washington | 39 min |
| May 26, 7:21 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Howard, Montgomery | 39 min |
| May 26, 7:27 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 48 min |
| May 26, 7:53 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Harford, Howard, City of Baltimore | 52 min |
| May 26, 7:59 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 46 min |
| May 26, 8:21 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 39 min |
| May 26, 8:53 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 52 min |
| May 26, 9:19 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Charles, Prince George's | 41 min |
| May 26, 9:35 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's, Saint Mary's | 27 min |
| May 28, 5:46 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 44 min |
| May 28, 6:15 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 34 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Charles County13
- Prince George's County11
- Frederick County9
- Montgomery County8
- Anne Arundel County6
- Washington County5
- Calvert County5
- Dorchester County4
- Carroll County4
- Howard County4
- Saint Mary's County3
- Harford County3
- Talbot County2
- Somerset County2
- Wicomico County2
- Worcester County2
- Baltimore County2
- City of Baltimore2
- Garrett County1
- Queen Anne's County1
- Caroline County1
- Cecil County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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. Rebuilt daily.