Alert archive / Maryland / Severe Thunderstorm Warnings / 2009
Severe Thunderstorm Warnings in Maryland, August 2009
34 severe thunderstorm warnings in August 2009. 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 2009. Tap one for its archive.
- Severe Thunderstorm Warnings
- 34
- Busiest day
- August 21, 20098 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 2, 7:12 AM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Washington | 67 min |
| Aug 2, 10:08 AM EDT | Severe Thunderstorm Warning | PHI | Cecil | 67 min |
| Aug 2, 10:39 AM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent, Queen Anne's | 96 min |
| Aug 2, 12:10 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 65 min |
| Aug 2, 12:32 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Wicomico | 43 min |
| Aug 2, 12:42 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester, Wicomico | 48 min |
| Aug 9, 5:53 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 82 min |
| Aug 9, 6:29 PM EDT | Severe Thunderstorm Warning | LWX | Harford | 45 min |
| Aug 9, 6:48 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Cecil, Kent, Queen Anne's | 72 min |
| Aug 10, 11:06 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 54 min |
| Aug 11, 8:09 PM EDT | Severe Thunderstorm Warning | PHI | Queen Anne's, Talbot | 66 min |
| Aug 11, 8:42 PM EDT | Severe Thunderstorm Warning | AKQ | Dorchester | 48 min |
| Aug 11, 9:04 PM EDT | Severe Thunderstorm Warning | PHI | Talbot | 26 min |
| Aug 18, 5:10 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 32 min |
| Aug 18, 5:25 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll | 50 min |
| Aug 18, 5:28 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford, City of Baltimore | 47 min |
| Aug 18, 6:15 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 37 min |
| Aug 18, 6:48 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 72 min |
| Aug 18, 7:54 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 36 min |
| Aug 18, 8:35 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 55 min |
| Aug 19, 4:19 PM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 41 min |
| Aug 19, 5:15 PM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 45 min |
| Aug 21, 2:53 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Saint Mary's | 37 min |
| Aug 21, 3:28 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 32 min |
| Aug 21, 3:28 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent, Queen Anne's | 62 min |
| Aug 21, 3:48 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 57 min |
| Aug 21, 4:13 PM EDT | Severe Thunderstorm Warning | PHI | Cecil, Kent, Queen Anne's | 77 min |
| Aug 21, 6:33 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 42 min |
| Aug 21, 7:07 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick, Howard, Montgomery | 53 min |
| Aug 21, 7:47 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Howard, City of Baltimore | 33 min |
| Aug 21, 9:44 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Harford | 16 min |
| Aug 24, 4:46 AM EDT | Severe Thunderstorm Warning | LWX | Saint Mary's | 58 min |
| Aug 28, 12:13 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 47 min |
| Aug 29, 9:47 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 58 min |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Queen Anne's County9
- Cecil County7
- Kent County7
- Talbot County6
- Caroline County5
- Baltimore County5
- Harford County4
- Saint Mary's County4
- Carroll County3
- Frederick County3
- Dorchester County3
- Anne Arundel County3
- Wicomico County2
- City of Baltimore2
- Montgomery County2
- Howard County2
- Washington County1
- Calvert County1
- Prince George's County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20082010
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.