Alert archive / Maryland / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Maryland, 1990
63 severe thunderstorm warnings in 1990. 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 1990. Tap one for its archive.
- Severe Thunderstorm Warnings
- 63
- Busiest month
- July18 severe thunderstorm warnings
- Busiest day
- July 1, 19908 severe thunderstorm warnings
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 |
|---|---|---|---|---|
| Apr 1, 7:40 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 65 min |
| Apr 2, 4:41 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 64 min |
| Apr 2, 5:25 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 65 min |
| May 10, 3:47 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 58 min |
| May 10, 4:59 PM EDT | Severe Thunderstorm Warning | LWX | Dorchester | 46 min |
| May 10, 4:59 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Saint Mary's | 46 min |
| May 10, 5:48 PM EDT | Severe Thunderstorm Warning | LWX | Caroline, Dorchester | 27 min |
| May 10, 6:58 PM EDT | Severe Thunderstorm Warning | LWX | Wicomico | 47 min |
| May 13, 5:49 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 56 min |
| May 16, 7:39 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 66 min |
| Jun 3, 6:01 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Howard, City of Baltimore | 59 min |
| Jun 8, 5:00 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 60 min |
| Jun 8, 5:59 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 61 min |
| Jun 8, 6:27 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll | 93 min |
| Jun 8, 6:27 PM EDT | Severe Thunderstorm Warning | LWX | Cecil, Harford | 93 min |
| Jun 8, 7:18 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Howard | 57 min |
| Jun 8, 8:30 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Howard | 30 min |
| Jun 9, 5:19 PM EDT | Severe Thunderstorm Warning | RLX | Garrett | 116 min |
| Jun 9, 5:21 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 69 min |
| Jun 9, 5:30 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Howard | 90 min |
| Jun 9, 5:55 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 65 min |
| Jun 9, 6:47 PM EDT | Severe Thunderstorm Warning | LWX | Cecil, Harford | 58 min |
| Jun 18, 3:54 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 66 min |
| Jun 18, 3:57 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll | 63 min |
| Jun 18, 4:17 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 28 min |
| Jun 18, 4:24 PM EDT | Severe Thunderstorm Warning | LWX | Howard | 66 min |
| Jun 18, 4:34 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 41 min |
| Jun 30, 8:28 PM EDT | Severe Thunderstorm Warning | RLX | Allegany | 62 min |
| Jun 30, 8:47 PM EDT | Severe Thunderstorm Warning | RLX | Garrett | 58 min |
| Jun 30, 9:51 PM EDT | Severe Thunderstorm Warning | RLX | Garrett | 69 min |
| Jun 30, 11:17 PM EDT | Severe Thunderstorm Warning | RLX | Garrett | 3 hr |
| Jul 1, 2:00 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 60 min |
| Jul 1, 2:59 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 61 min |
| Jul 1, 3:29 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Saint Mary's | 61 min |
| Jul 1, 5:05 PM EDT | Severe Thunderstorm Warning | LWX | Wicomico, Worcester | 55 min |
| Jul 5, 3:25 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 65 min |
| Jul 5, 3:26 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 64 min |
| Jul 5, 3:43 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 62 min |
| Jul 5, 3:53 PM EDT | Severe Thunderstorm Warning | LWX | Cecil | 37 min |
| Jul 5, 4:05 PM EDT | Severe Thunderstorm Warning | LWX | Carroll | 40 min |
| Jul 5, 7:38 PM EDT | Severe Thunderstorm Warning | LWX | Worcester | 52 min |
| Jul 9, 6:57 PM EDT | Severe Thunderstorm Warning | RLX | Garrett | 63 min |
| Jul 9, 8:29 PM EDT | Severe Thunderstorm Warning | RLX | Garrett | 61 min |
| Jul 11, 5:25 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Saint Mary's | 65 min |
| Jul 12, 5:54 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 66 min |
| Aug 13, 6:56 PM EDT | Severe Thunderstorm Warning | LWX | Kent, Queen Anne's | 64 min |
| Aug 13, 8:21 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 69 min |
| Aug 13, 9:12 PM EDT | Severe Thunderstorm Warning | LWX | Caroline, Kent, Queen Anne's | 63 min |
| Aug 29, 6:29 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 91 min |
| Aug 29, 6:29 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll | 81 min |
| Aug 29, 7:22 PM EDT | Severe Thunderstorm Warning | LWX | Cecil, Harford | 68 min |
| Sep 6, 7:13 PM EDT | Severe Thunderstorm Warning | RLX | Garrett | 2 hr |
| Sep 7, 5:33 PM EDT | Severe Thunderstorm Warning | LWX | Wicomico, Worcester | 42 min |
| Sep 12, 4:21 PM EDT | Severe Thunderstorm Warning | RLX | Garrett | 2 hr |
| Sep 16, 4:41 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 2 hr |
| Sep 16, 4:57 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 2 hr |
| Sep 16, 5:30 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 90 min |
| Oct 18, 3:52 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 68 min |
| Oct 18, 4:13 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, City of Baltimore | 62 min |
| Oct 18, 4:13 PM EDT | Severe Thunderstorm Warning | LWX | Howard | 62 min |
| Oct 18, 4:55 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 35 min |
| Oct 18, 5:12 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, City of Baltimore | 48 min |
| Oct 18, 5:12 PM EDT | Severe Thunderstorm Warning | LWX | Calvert | 48 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Montgomery County11
- Frederick County8
- Garrett County8
- Prince George's County6
- Howard County6
- Anne Arundel County5
- Baltimore County5
- Carroll County5
- Harford County5
- Washington County4
- Cecil County4
- Calvert County3
- Saint Mary's County3
- Wicomico County3
- Charles County3
- City of Baltimore3
- Worcester County3
- Dorchester County2
- Caroline County2
- Kent County2
- Queen Anne's County2
- Allegany County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive19891991
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.