Alert archive / Maryland / Flash Flood Warnings
Flash Flood Warnings in Maryland, 2012
50 flash flood warnings in 2012. 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 flash flood warnings reaches back to 1986.
Flash Flood Warnings by county
Each county as a circle sized by its count in 2012. Tap one for its archive.
- Flash Flood Warnings
- 50
- Busiest month
- August15 flash flood warnings
- Busiest day
- August 26, 20129 flash flood 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 29, 4:35 PM EST | Flash Flood Warning | PBZ | Garrett | 3 hr |
| May 27, 3:21 PM EDT | Flash Flood Warning | PBZ | Garrett | 3 hr |
| May 28, 4:39 PM EDT | Flash Flood Warning | LWX | Allegany | 62 min |
| May 29, 5:45 PM EDT | Flash Flood Warning | LWX | Frederick, Washington | 5 hr |
| May 29, 7:38 PM EDT | Flash Flood Warning | LWX | Montgomery | 76 min |
| May 29, 8:10 PM EDT | Flash Flood Warning | LWX | Montgomery, Prince George's | 96 min |
| Jun 1, 3:18 PM EDT | Flash Flood Warning | LWX | Carroll, Frederick, Howard, Montgomery | 6 hr |
| Jun 1, 4:07 PM EDT | Flash Flood Warning | LWX | Baltimore, Carroll | 6 hr |
| Jun 1, 5:32 PM EDT | Flash Flood Warning | LWX | Montgomery, Prince George's | 6 hr |
| Jun 1, 5:36 PM EDT | Flash Flood Warning | LWX | Baltimore, City of Baltimore | 6 hr |
| Jun 1, 6:16 PM EDT | Flash Flood Warning | LWX | Baltimore, Harford | 6 hr |
| Jun 1, 6:35 PM EDT | Flash Flood Warning | LWX | Anne Arundel, Baltimore, Howard, Montgomery, Prince George's | 5 hr |
| Jun 22, 7:42 PM EDT | Flash Flood Warning | PHI | Cecil | 93 min |
| Jun 22, 8:15 PM EDT | Flash Flood Warning | PHI | Cecil, Kent, Queen Anne's | 53 min |
| Jun 29, 10:16 PM EDT | Flash Flood Warning | LWX | Frederick | 3 hr |
| Jul 9, 2:48 AM EDT | Flash Flood Warning | LWX | Frederick | 3 hr |
| Jul 14, 4:04 PM EDT | Flash Flood Warning | LWX | Charles, Prince George's | 90 min |
| Jul 18, 5:00 PM EDT | Flash Flood Warning | LWX | Montgomery, Prince George's | 96 min |
| Jul 19, 7:07 PM EDT | Flash Flood Warning | LWX | Anne Arundel, Baltimore, City of Baltimore | 110 min |
| Jul 19, 10:06 PM EDT | Flash Flood Warning | LWX | Anne Arundel, Baltimore, City of Baltimore | 3 hr |
| Jul 19, 10:17 PM EDT | Flash Flood Warning | LWX | Baltimore, Carroll | 3 hr |
| Jul 19, 10:24 PM EDT | Flash Flood Warning | LWX | Montgomery, Prince George's | 3 hr |
| Jul 26, 9:56 PM EDT | Flash Flood Warning | LWX | Baltimore, Carroll, Harford, City of Baltimore | 3 hr |
| Jul 28, 5:05 PM EDT | Flash Flood Warning | LWX | Harford | 103 min |
| Aug 9, 8:42 PM EDT | Flash Flood Warning | LWX | Howard, Montgomery | 73 min |
| Aug 14, 9:32 PM EDT | Flash Flood Warning | LWX | Baltimore, Howard, City of Baltimore | 5 hr |
| Aug 14, 10:43 PM EDT | Flash Flood Warning | LWX | Baltimore, Harford | 2 hr |
| Aug 15, 1:35 AM EDT | Flash Flood Warning | LWX | Baltimore | 62 min |
| Aug 25, 3:03 PM EDT | Flash Flood Warning | AKQ | Somerset, Worcester | 117 min |
| Aug 25, 4:54 PM EDT | Flash Flood Warning | AKQ | Somerset, Worcester | 50 min |
| Aug 26, 7:38 AM EDT | Flash Flood Warning | LWX | Baltimore, City of Baltimore | 115 min |
| Aug 26, 1:29 PM EDT | Flash Flood Warning | PHI | Caroline, Queen Anne's, Talbot | 7 hr |
| Aug 26, 2:03 PM EDT | Flash Flood Warning | LWX | Anne Arundel, Baltimore, Howard, Prince George's, City of Baltimore | 4 hr |
| Aug 26, 2:25 PM EDT | Flash Flood Warning | LWX | Baltimore | 7 hr |
| Aug 26, 2:54 PM EDT | Flash Flood Warning | LWX | Anne Arundel, Baltimore, City of Baltimore | 4 hr |
| Aug 26, 2:58 PM EDT | Flash Flood Warning | PHI | Kent, Queen Anne's | 4 hr |
| Aug 26, 5:16 PM EDT | Flash Flood Warning | LWX | Calvert | 4 hr |
| Aug 26, 6:15 PM EDT | Flash Flood Warning | PHI | Caroline, Queen Anne's | 4 hr |
| Aug 26, 7:37 PM EDT | Flash Flood Warning | LWX | Saint Mary's | 2 hr |
| Sep 1, 6:13 PM EDT | Flash Flood Warning | LWX | Allegany, Washington | 2 hr |
| Sep 2, 2:41 PM EDT | Flash Flood Warning | LWX | Saint Mary's | 3 hr |
| Sep 2, 3:57 PM EDT | Flash Flood Warning | PHI | Caroline | 2 hr |
| Sep 2, 7:08 PM EDT | Flash Flood Warning | LWX | Charles, Saint Mary's | 2 hr |
| Sep 3, 4:44 PM EDT | Flash Flood Warning | LWX | Baltimore, City of Baltimore | 113 min |
| Sep 6, 10:45 AM EDT | Flash Flood Warning | LWX | Calvert, Saint Mary's | 3 hr |
| Sep 18, 12:39 PM EDT | Flash Flood Warning | LWX | Carroll, Frederick, Washington | 4 hr |
| Sep 18, 12:59 PM EDT | Flash Flood Warning | LWX | Frederick | 3 hr |
| Sep 18, 2:50 PM EDT | Flash Flood Warning | LWX | Montgomery, Prince George's | 3 hr |
| Sep 18, 3:28 PM EDT | Flash Flood Warning | LWX | Baltimore, City of Baltimore | 2 hr |
| Oct 29, 12:39 PM EDT | Flash Flood Warning | LWX | Washington | 3 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Baltimore County17
- City of Baltimore10
- Montgomery County9
- Prince George's County8
- Frederick County6
- Carroll County5
- Howard County5
- Anne Arundel County5
- Washington County4
- Harford County4
- Queen Anne's County4
- Saint Mary's County4
- Caroline County3
- Garrett County2
- Allegany County2
- Cecil County2
- Kent County2
- Charles County2
- Somerset County2
- Worcester County2
- Calvert County2
- Talbot County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20112013
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. Rebuilt daily.