Alert archive / Maryland / Severe Thunderstorm Warnings / 2011
Severe Thunderstorm Warnings in Maryland, April 2011
44 severe thunderstorm warnings in April 2011. 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 April 2011. Tap one for its archive.
- Severe Thunderstorm Warnings
- 44
- Busiest day
- April 28, 201115 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 |
|---|---|---|---|---|
| Apr 2, 3:17 PM EDT | Severe Thunderstorm Warning | LWX | Charles | 43 min |
| Apr 5, 4:29 AM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Charles, Montgomery, Prince George's | 51 min |
| Apr 5, 4:38 AM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Saint Mary's | 67 min |
| Apr 5, 4:40 AM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Carroll, Harford, Howard, Montgomery and 2 more | 53 min |
| Apr 5, 5:01 AM EDT | Severe Thunderstorm Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 74 min |
| Apr 5, 5:28 AM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 62 min |
| Apr 5, 5:43 AM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Somerset, Wicomico, Worcester | 62 min |
| Apr 5, 10:20 AM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 40 min |
| Apr 16, 2:58 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 47 min |
| Apr 16, 4:19 PM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 41 min |
| Apr 16, 4:21 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 39 min |
| Apr 16, 4:59 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Frederick, Howard, Montgomery, Prince George's | 46 min |
| Apr 16, 6:35 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 40 min |
| Apr 16, 7:01 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery, Washington | 44 min |
| Apr 16, 7:38 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Carroll, Frederick, Howard, Montgomery and 1 more | 52 min |
| Apr 16, 7:49 PM EDT | Severe Thunderstorm Warning | AKQ | Somerset, Wicomico | 26 min |
| Apr 16, 8:18 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Harford | 42 min |
| Apr 16, 8:37 PM EDT | Severe Thunderstorm Warning | AKQ | Worcester | 23 min |
| Apr 16, 8:38 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 52 min |
| Apr 16, 9:11 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 64 min |
| Apr 24, 3:36 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 39 min |
| Apr 24, 4:07 PM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery, Prince George's | 38 min |
| Apr 24, 4:30 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Carroll, Howard, Montgomery, Prince George's and 1 more | 45 min |
| Apr 24, 4:43 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Harford, Howard, City of Baltimore | 47 min |
| Apr 24, 4:56 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 64 min |
| Apr 24, 7:54 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Harford, Howard, City of Baltimore | 32 min |
| Apr 24, 8:06 PM EDT | Severe Thunderstorm Warning | LWX | Charles, Prince George's | 39 min |
| Apr 24, 8:24 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery, Prince George's | 34 min |
| Apr 26, 8:50 PM EDT | Severe Thunderstorm Warning | LWX | Allegany | 22 min |
| Apr 27, 8:19 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery, Washington | 36 min |
| Apr 27, 8:28 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 19 min |
| Apr 27, 11:47 PM EDT | Severe Thunderstorm Warning | PBZ | Garrett | 58 min |
| Apr 28, 12:35 AM EDT | Severe Thunderstorm Warning | LWX | Allegany | 70 min |
| Apr 28, 1:29 AM EDT | Severe Thunderstorm Warning | LWX | Allegany, Washington | 35 min |
| Apr 28, 2:59 AM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 62 min |
| Apr 28, 9:39 AM EDT | Severe Thunderstorm Warning | LWX | Howard, Montgomery | 36 min |
| Apr 28, 10:38 AM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's, Saint Mary's | 52 min |
| Apr 28, 10:54 AM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Saint Mary's | 66 min |
| Apr 28, 10:56 AM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 49 min |
| Apr 28, 11:09 AM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Prince George's | 36 min |
| Apr 28, 11:26 AM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Calvert, Charles, Prince George's, Saint Mary's | 18 min |
| Apr 28, 11:37 AM EDT | Severe Thunderstorm Warning | PHI | Caroline, Cecil, Kent, Queen Anne's | 53 min |
| Apr 28, 11:46 AM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Wicomico | 26 min |
| Apr 28, 5:38 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 39 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Montgomery County12
- Prince George's County11
- Anne Arundel County9
- Howard County8
- Washington County8
- Frederick County8
- Charles County7
- Baltimore County7
- Caroline County7
- Calvert County6
- Carroll County5
- Saint Mary's County4
- Harford County4
- City of Baltimore4
- Cecil County4
- Queen Anne's County4
- Talbot County4
- Allegany County4
- Kent County3
- Dorchester County3
- Wicomico County3
- Somerset County2
- Worcester County2
- Garrett County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20102012
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.