Alert archive / Maryland / Flash Flood Watches / 2021
Flash Flood Watches in Maryland, August 2021
11 flash flood watches in August 2021. 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 watches reaches back to 2005.
Flash Flood Watches by county
Each county as a circle sized by its count in August 2021. Tap one for its archive.
- Flash Flood Watches
- 11
- Busiest day
- August 19, 20213 flash flood watches
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 14, 6:14 PM EDT | Flash Flood Watch | LWX | Anne Arundel, Calvert, Charles, Howard, Montgomery, Prince George's | 10 hr |
| Aug 15, 5:47 PM EDT | Flash Flood Watch | LWX | Charles | 18 hr |
| Aug 17, 8:54 AM EDT | Flash Flood Watch | LWX | Anne Arundel, Baltimore, Cecil, Harford, City of Baltimore | 9 hr |
| Aug 17, 1:54 PM EDT | Flash Flood Watch | LWX | Allegany, Baltimore, Carroll, Frederick, Harford, Howard and 3 more | 27 hr |
| Aug 19, 2:11 PM EDT | Flash Flood Watch | LWX | Allegany, Anne Arundel, Baltimore, Calvert, Charles, Howard and 4 more | 28 hr |
| Aug 19, 2:57 PM EDT | Flash Flood Watch | AKQ | Dorchester, Somerset, Wicomico | 31 hr |
| Aug 19, 3:22 PM EDT | Flash Flood Watch | PHI | Caroline, Kent, Queen Anne's, Talbot | 23 hr |
| Aug 27, 2:56 AM EDT | Flash Flood Watch | LWX | Anne Arundel, Baltimore, Cecil, Harford, Howard, Montgomery and 2 more | 17 hr |
| Aug 30, 4:54 AM EDT | Flash Flood Watch | LWX | Allegany, Anne Arundel, Baltimore, Calvert, Carroll, Cecil and 9 more | 62 hr |
| Aug 30, 5:00 AM EDT | Flash Flood Watch | PHI | Caroline, Kent, Queen Anne's, Talbot | 71 hr |
| Aug 30, 11:48 AM EDT | Flash Flood Watch | LWX | Anne Arundel, Baltimore, Charles, Harford, Howard, Montgomery and 2 more | 6 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Anne Arundel County6
- Howard County6
- Montgomery County6
- Baltimore County6
- City of Baltimore6
- Charles County5
- Prince George's County5
- Harford County5
- Calvert County3
- Cecil County3
- Allegany County3
- Carroll County2
- Frederick County2
- Washington County2
- Saint Mary's County2
- Caroline County2
- Kent County2
- Queen Anne's County2
- Talbot County2
- Dorchester County1
- Somerset County1
- Wicomico County1
Nearby
Alerts in force nowTornadoes on recordThe radar archive20202022
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.