Alert archive / Maryland / Severe Thunderstorm Warnings
Severe Thunderstorm Warnings in Maryland, 1999
65 severe thunderstorm warnings in 1999. 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 1999. Tap one for its archive.
- Severe Thunderstorm Warnings
- 65
- Busiest month
- April18 severe thunderstorm warnings
- Busiest day
- April 23, 199910 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 |
|---|---|---|---|---|
| Feb 12, 5:38 PM EST | Severe Thunderstorm Warning | LWX | Charles | 32 min |
| Mar 3, 6:50 PM EST | Severe Thunderstorm Warning | LWX | Washington | 30 min |
| Apr 9, 4:09 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 59 min |
| Apr 9, 6:16 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Saint Mary's | 49 min |
| Apr 9, 6:34 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 41 min |
| Apr 9, 7:13 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 47 min |
| Apr 9, 7:24 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 36 min |
| Apr 9, 7:35 PM EDT | Severe Thunderstorm Warning | AKQ | Somerset, Wicomico | 45 min |
| Apr 9, 7:35 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 45 min |
| Apr 11, 2:16 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 59 min |
| Apr 23, 4:20 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 50 min |
| Apr 23, 4:23 PM EDT | Severe Thunderstorm Warning | PHI | Talbot | 32 min |
| Apr 23, 4:34 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Saint Mary's | 31 min |
| Apr 23, 4:38 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 32 min |
| Apr 23, 4:43 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 32 min |
| Apr 23, 4:49 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 51 min |
| Apr 23, 4:56 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 34 min |
| Apr 23, 5:12 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Saint Mary's | 48 min |
| Apr 23, 5:55 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 35 min |
| Apr 23, 6:15 PM EDT | Severe Thunderstorm Warning | AKQ | Somerset | 30 min |
| May 7, 6:42 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 58 min |
| May 7, 7:43 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 62 min |
| May 24, 8:50 AM EDT | Severe Thunderstorm Warning | PHI | Cecil | 20 min |
| May 24, 1:43 PM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery | 32 min |
| May 24, 1:57 PM EDT | Severe Thunderstorm Warning | AKQ | Somerset | 33 min |
| May 24, 2:14 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, City of Baltimore | 31 min |
| May 24, 2:27 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 48 min |
| May 24, 2:43 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 47 min |
| Jun 2, 6:16 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 34 min |
| Jun 14, 5:37 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 48 min |
| Jun 14, 5:50 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert | 60 min |
| Jul 17, 7:16 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 59 min |
| Jul 22, 8:53 AM EDT | Severe Thunderstorm Warning | AKQ | Somerset | 32 min |
| Jul 22, 9:14 PM EDT | Severe Thunderstorm Warning | PHI | Queen Anne's | 31 min |
| Jul 24, 1:30 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 50 min |
| Jul 24, 2:33 PM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 62 min |
| Jul 24, 2:43 PM EDT | Severe Thunderstorm Warning | LWX | Calvert | 32 min |
| Jul 24, 2:56 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 44 min |
| Jul 25, 7:56 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 34 min |
| Jul 28, 4:23 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Howard | 62 min |
| Jul 30, 6:03 PM EDT | Severe Thunderstorm Warning | LWX | Howard | 32 min |
| Jul 30, 6:22 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 33 min |
| Jul 30, 7:55 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore | 45 min |
| Jul 30, 8:38 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, City of Baltimore | 47 min |
| Aug 1, 12:21 AM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 54 min |
| Aug 13, 11:34 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 46 min |
| Aug 14, 3:11 AM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 34 min |
| Aug 14, 1:25 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 50 min |
| Aug 14, 1:47 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 48 min |
| Aug 14, 3:33 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 47 min |
| Aug 14, 3:39 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, City of Baltimore | 46 min |
| Aug 14, 3:58 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 47 min |
| Aug 14, 4:58 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Prince George's | 47 min |
| Aug 14, 5:22 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 48 min |
| Aug 26, 3:10 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 50 min |
| Aug 26, 4:48 PM EDT | Severe Thunderstorm Warning | LWX | Carroll | 32 min |
| Aug 26, 5:11 PM EDT | Severe Thunderstorm Warning | LWX | Frederick | 49 min |
| Aug 26, 8:00 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent | 45 min |
| Sep 6, 4:38 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 47 min |
| Sep 7, 8:08 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 62 min |
| Sep 29, 11:21 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 49 min |
| Sep 29, 11:55 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 45 min |
| Sep 30, 12:41 AM EDT | Severe Thunderstorm Warning | LWX | Carroll, Howard | 44 min |
| Sep 30, 12:55 AM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 45 min |
| Nov 2, 4:18 PM EST | Severe Thunderstorm Warning | LWX | Washington | 62 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Washington County7
- Dorchester County7
- Garrett County5
- Calvert County5
- Cecil County5
- Prince George's County5
- Montgomery County5
- Frederick County5
- Charles County4
- Saint Mary's County4
- Somerset County4
- Howard County4
- Baltimore County4
- Kent County3
- Queen Anne's County3
- City of Baltimore3
- Carroll County3
- Harford County2
- Anne Arundel County2
- Wicomico County1
- Talbot County1
- Caroline County1
- Allegany County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive19982000
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.