Alert archive / Maryland / Severe Thunderstorm Warnings / 2017
Severe Thunderstorm Warnings in Maryland, August 2017
69 severe thunderstorm warnings in August 2017. 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 2017. Tap one for its archive.
- Severe Thunderstorm Warnings
- 69
- Busiest day
- August 18, 201713 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, 6:13 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 35 min |
| Aug 2, 12:55 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 37 min |
| Aug 2, 2:31 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 44 min |
| Aug 2, 2:52 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 39 min |
| Aug 2, 3:56 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 49 min |
| Aug 2, 6:12 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 33 min |
| Aug 2, 6:55 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 35 min |
| Aug 2, 7:58 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 47 min |
| Aug 2, 9:12 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's | 34 min |
| Aug 3, 4:02 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Prince George's | 43 min |
| Aug 3, 4:17 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 21 min |
| Aug 3, 4:53 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Howard, City of Baltimore | 52 min |
| Aug 3, 5:20 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore | 40 min |
| Aug 3, 5:35 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Howard | 40 min |
| Aug 3, 5:37 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 33 min |
| Aug 3, 5:53 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 52 min |
| Aug 3, 5:55 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 35 min |
| Aug 3, 6:13 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 47 min |
| Aug 3, 6:32 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 43 min |
| Aug 3, 6:56 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 20 min |
| Aug 3, 8:11 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 26 min |
| Aug 4, 3:50 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 40 min |
| Aug 4, 5:03 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 27 min |
| Aug 4, 5:29 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 31 min |
| Aug 4, 5:49 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 27 min |
| Aug 4, 9:22 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 23 min |
| Aug 4, 9:49 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Washington | 41 min |
| Aug 4, 10:26 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Washington | 49 min |
| Aug 4, 11:10 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll | 32 min |
| Aug 7, 1:37 PM EDT | Severe Thunderstorm Warning | AKQ | Wicomico | 53 min |
| Aug 11, 7:40 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 65 min |
| Aug 11, 11:11 PM EDT | Severe Thunderstorm Warning | PHI | Talbot | 49 min |
| Aug 12, 1:45 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 28 min |
| Aug 12, 3:26 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 39 min |
| Aug 12, 3:50 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 40 min |
| Aug 12, 5:00 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 45 min |
| Aug 12, 5:56 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Howard, Montgomery | 49 min |
| Aug 12, 5:58 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 47 min |
| Aug 12, 6:30 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 17 min |
| Aug 12, 7:19 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Howard, City of Baltimore | 41 min |
| Aug 12, 7:32 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 43 min |
| Aug 12, 7:56 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 49 min |
| Aug 12, 8:09 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Prince George's | 66 min |
| Aug 18, 4:29 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 61 min |
| Aug 18, 4:35 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 55 min |
| Aug 18, 5:03 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 42 min |
| Aug 18, 5:14 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Harford, Howard, City of Baltimore | 91 min |
| Aug 18, 5:29 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 46 min |
| Aug 18, 5:32 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Howard, Montgomery, Prince George's | 73 min |
| Aug 18, 5:39 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 66 min |
| Aug 18, 5:59 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Prince George's, Saint Mary's | 46 min |
| Aug 18, 6:10 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 65 min |
| Aug 18, 6:42 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Saint Mary's | 63 min |
| Aug 18, 7:07 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 53 min |
| Aug 18, 7:51 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Saint Mary's | 84 min |
| Aug 18, 7:53 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 48 min |
| Aug 18, 9:17 PM EDT | Severe Thunderstorm Warning | AKQ | Somerset, Wicomico, Worcester | 43 min |
| Aug 19, 8:35 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick | 40 min |
| Aug 19, 10:51 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's | 39 min |
| Aug 21, 3:09 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 51 min |
| Aug 21, 3:44 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 46 min |
| Aug 21, 4:51 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Saint Mary's | 39 min |
| Aug 21, 5:29 PM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 34 min |
| Aug 21, 5:47 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore | 43 min |
| Aug 21, 7:56 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Washington | 49 min |
| Aug 21, 8:41 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 27 min |
| Aug 22, 10:07 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 53 min |
| Aug 22, 10:14 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 21 min |
| Aug 22, 10:58 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 62 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Baltimore County14
- Anne Arundel County11
- Frederick County11
- Washington County11
- Harford County10
- Montgomery County9
- Prince George's County9
- Kent County9
- Charles County8
- Carroll County7
- Howard County6
- Queen Anne's County5
- Caroline County5
- Allegany County5
- Calvert County5
- Cecil County5
- Saint Mary's County5
- Talbot County4
- City of Baltimore3
- Wicomico County2
- Garrett County1
- Somerset County1
- Worcester County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20162018
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.