Alert archive / Maryland / Severe Thunderstorm Warnings / 2020
Severe Thunderstorm Warnings in Maryland, August 2020
85 severe thunderstorm warnings in August 2020. 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 August 2020. Tap one for its archive.
- Severe Thunderstorm Warnings
- 85
- Busiest day
- August 28, 202018 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 |
|---|---|---|---|---|
| Aug 1, 7:40 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 50 min |
| Aug 1, 8:29 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 46 min |
| Aug 1, 9:07 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 38 min |
| Aug 1, 9:54 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 31 min |
| Aug 2, 9:47 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Saint Mary's | 43 min |
| Aug 3, 2:13 AM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Prince George's, Saint Mary's | 26 min |
| Aug 3, 2:55 AM EDT | Severe Thunderstorm Warning | LWX | Calvert, Saint Mary's | 23 min |
| Aug 3, 2:38 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 18 min |
| Aug 3, 2:55 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Saint Mary's | 65 min |
| Aug 3, 3:39 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 36 min |
| Aug 4, 8:21 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 39 min |
| Aug 6, 4:33 AM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 42 min |
| Aug 6, 5:25 AM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 17 min |
| Aug 6, 5:36 AM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 39 min |
| Aug 6, 6:13 AM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 62 min |
| Aug 6, 7:31 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 30 min |
| Aug 6, 8:56 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 49 min |
| Aug 6, 9:07 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 38 min |
| Aug 7, 2:08 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 52 min |
| Aug 7, 2:48 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick | 36 min |
| Aug 7, 4:26 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 49 min |
| Aug 7, 4:53 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 27 min |
| Aug 7, 5:03 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 42 min |
| Aug 7, 5:36 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 39 min |
| Aug 7, 6:04 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 41 min |
| Aug 7, 6:12 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 48 min |
| Aug 7, 6:12 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent, Queen Anne's | 63 min |
| Aug 7, 7:04 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent, Queen Anne's | 41 min |
| Aug 12, 3:20 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 29 min |
| Aug 12, 4:54 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 36 min |
| Aug 12, 5:05 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Howard | 40 min |
| Aug 12, 5:23 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Howard, City of Baltimore | 38 min |
| Aug 19, 10:20 AM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Wicomico | 40 min |
| Aug 23, 4:23 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 52 min |
| Aug 23, 5:01 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 44 min |
| Aug 23, 5:29 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Howard, Montgomery | 46 min |
| Aug 23, 6:58 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, City of Baltimore | 47 min |
| Aug 23, 7:58 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 25 min |
| Aug 23, 8:42 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 48 min |
| Aug 24, 1:39 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 39 min |
| Aug 24, 2:38 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 20 min |
| Aug 24, 2:51 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Howard, City of Baltimore | 39 min |
| Aug 24, 4:46 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Saint Mary's | 30 min |
| Aug 25, 2:26 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 23 min |
| Aug 25, 4:12 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 48 min |
| Aug 25, 4:48 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 27 min |
| Aug 25, 4:50 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 40 min |
| Aug 25, 4:52 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 38 min |
| Aug 25, 5:03 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 42 min |
| Aug 25, 5:50 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 40 min |
| Aug 25, 6:31 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 19 min |
| Aug 25, 7:11 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 49 min |
| Aug 25, 7:36 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 39 min |
| Aug 25, 7:51 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Prince George's | 39 min |
| Aug 25, 8:28 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 47 min |
| Aug 25, 8:29 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 46 min |
| Aug 25, 9:08 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Somerset, Wicomico | 52 min |
| Aug 25, 9:12 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 48 min |
| Aug 25, 9:47 PM EDT | Severe Thunderstorm Warning | AKQ | Somerset, Wicomico, Worcester | 43 min |
| Aug 27, 2:51 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 39 min |
| Aug 27, 6:25 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's, Talbot | 50 min |
| Aug 27, 7:25 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 35 min |
| Aug 27, 7:40 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 65 min |
| Aug 27, 8:30 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 15 min |
| Aug 27, 8:42 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 48 min |
| Aug 28, 1:51 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 24 min |
| Aug 28, 1:53 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 52 min |
| Aug 28, 2:40 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 50 min |
| Aug 28, 3:02 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 43 min |
| Aug 28, 3:07 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Frederick, Howard, Montgomery | 38 min |
| Aug 28, 3:19 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Frederick, Harford | 41 min |
| Aug 28, 3:45 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll | 21 min |
| Aug 28, 4:01 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 44 min |
| Aug 28, 4:02 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 43 min |
| Aug 28, 4:33 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Frederick, Howard, Montgomery, Prince George's | 42 min |
| Aug 28, 4:39 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent, Queen Anne's | 66 min |
| Aug 28, 5:45 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 45 min |
| Aug 28, 6:17 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 43 min |
| Aug 28, 6:17 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 43 min |
| Aug 28, 6:55 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Prince George's | 33 min |
| Aug 28, 7:41 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's, Saint Mary's | 49 min |
| Aug 28, 8:19 PM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 26 min |
| Aug 29, 1:27 AM EDT | Severe Thunderstorm Warning | AKQ | Somerset, Worcester | 48 min |
| Aug 29, 1:35 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 40 min |
| Aug 29, 8:12 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Saint Mary's | 48 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Baltimore County11
- Prince George's County10
- Kent County10
- Frederick County10
- Cecil County10
- Allegany County9
- Washington County9
- Charles County9
- Saint Mary's County8
- Anne Arundel County8
- Caroline County7
- Queen Anne's County7
- Harford County7
- Calvert County6
- Talbot County6
- Howard County6
- Montgomery County5
- Carroll County5
- Garrett County5
- Dorchester County4
- City of Baltimore3
- Wicomico County3
- Somerset County3
- Worcester County2
Nearby
Alerts in force nowTornadoes on recordThe radar archive20192021
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.