Alert archive / Maryland / Flash Flood Warnings
Flash Flood Warnings in Maryland, 2017
44 flash flood warnings in 2017. 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 2017. Tap one for its archive.
- Flash Flood Warnings
- 44
- Busiest month
- July21 flash flood warnings
- Busiest day
- July 14, 20176 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 |
|---|---|---|---|---|
| May 25, 6:29 PM EDT | Flash Flood Warning | LWX | Montgomery | 3 hr |
| May 25, 7:40 PM EDT | Flash Flood Warning | LWX | Baltimore | 3 hr |
| Jun 16, 5:23 PM EDT | Flash Flood Warning | PBZ | Garrett | 3 hr |
| Jul 4, 3:51 PM EDT | Flash Flood Warning | LWX | Allegany | 3 hr |
| Jul 6, 8:03 AM EDT | Flash Flood Warning | LWX | Calvert, Charles, Saint Mary's | 6 hr |
| Jul 6, 3:35 PM EDT | Flash Flood Warning | PHI | Cecil | 4 hr |
| Jul 14, 3:10 PM EDT | Flash Flood Warning | PHI | Cecil | 2 hr |
| Jul 14, 3:52 PM EDT | Flash Flood Warning | PHI | Talbot | 53 min |
| Jul 14, 3:57 PM EDT | Flash Flood Warning | PHI | Cecil, Kent | 2 hr |
| Jul 14, 4:59 PM EDT | Flash Flood Warning | PHI | Queen Anne's | 4 hr |
| Jul 14, 5:58 PM EDT | Flash Flood Warning | PHI | Talbot | 3 hr |
| Jul 14, 6:10 PM EDT | Flash Flood Warning | PHI | Caroline | 3 hr |
| Jul 17, 3:51 PM EDT | Flash Flood Warning | LWX | Baltimore, Carroll | 3 hr |
| Jul 17, 4:10 PM EDT | Flash Flood Warning | LWX | Montgomery | 3 hr |
| Jul 23, 5:19 PM EDT | Flash Flood Warning | LWX | Harford | 3 hr |
| Jul 23, 6:26 PM EDT | Flash Flood Warning | PHI | Cecil | 4 hr |
| Jul 23, 7:05 PM EDT | Flash Flood Warning | LWX | Harford | 3 hr |
| Jul 28, 10:49 AM EDT | Flash Flood Warning | LWX | Montgomery | 4 hr |
| Jul 28, 11:48 AM EDT | Flash Flood Warning | LWX | Prince George's | 6 hr |
| Jul 28, 3:18 PM EDT | Flash Flood Warning | LWX | Prince George's | 3 hr |
| Jul 28, 6:31 PM EDT | Flash Flood Warning | LWX | Baltimore, City of Baltimore | 4 hr |
| Jul 28, 7:07 PM EDT | Flash Flood Warning | PBZ | Garrett | 5 hr |
| Jul 28, 10:51 PM EDT | Flash Flood Warning | LWX | Frederick, Howard, Montgomery | 4 hr |
| Jul 28, 11:50 PM EDT | Flash Flood Warning | LWX | Anne Arundel, Baltimore, Howard, Montgomery, City of Baltimore | 3 hr |
| Aug 1, 7:18 PM EDT | Flash Flood Warning | LWX | Montgomery, Prince George's | 3 hr |
| Aug 2, 2:40 PM EDT | Flash Flood Warning | LWX | Baltimore | 3 hr |
| Aug 2, 3:24 PM EDT | Flash Flood Warning | LWX | Baltimore | 3 hr |
| Aug 2, 3:28 PM EDT | Flash Flood Warning | LWX | Harford | 3 hr |
| Aug 2, 4:13 PM EDT | Flash Flood Warning | LWX | Baltimore, Harford | 3 hr |
| Aug 7, 10:44 AM EDT | Flash Flood Warning | PHI | Caroline, Queen Anne's, Talbot | 4 hr |
| Aug 7, 1:35 PM EDT | Flash Flood Warning | PHI | Caroline, Queen Anne's, Talbot | 4 hr |
| Aug 11, 9:18 PM EDT | Flash Flood Warning | LWX | Prince George's | 3 hr |
| Aug 11, 10:48 PM EDT | Flash Flood Warning | LWX | Calvert, Charles, Prince George's, Saint Mary's | 3 hr |
| Aug 12, 9:08 AM EDT | Flash Flood Warning | AKQ | Wicomico, Worcester | 3 hr |
| Aug 15, 11:15 AM EDT | Flash Flood Warning | LWX | Montgomery, Prince George's | 3 hr |
| Aug 15, 12:04 PM EDT | Flash Flood Warning | LWX | Howard | 3 hr |
| Aug 15, 12:43 PM EDT | Flash Flood Warning | LWX | Baltimore, City of Baltimore | 3 hr |
| Aug 18, 5:07 PM EDT | Flash Flood Warning | LWX | Baltimore, Howard, City of Baltimore | 3 hr |
| Aug 18, 5:10 PM EDT | Flash Flood Warning | LWX | Harford | 4 hr |
| Aug 18, 6:34 PM EDT | Flash Flood Warning | LWX | Montgomery, Prince George's | 3 hr |
| Aug 18, 7:14 PM EDT | Flash Flood Warning | LWX | Harford | 3 hr |
| Aug 18, 7:36 PM EDT | Flash Flood Warning | LWX | Calvert, Charles, Saint Mary's | 4 hr |
| Aug 21, 3:30 PM EDT | Flash Flood Warning | LWX | Baltimore, City of Baltimore | 4 hr |
| Aug 21, 5:24 PM EDT | Flash Flood Warning | LWX | Charles, Saint Mary's | 3 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Baltimore County10
- Montgomery County8
- Prince George's County7
- Harford County6
- City of Baltimore5
- Charles County4
- Saint Mary's County4
- Cecil County4
- Talbot County4
- Howard County4
- Calvert County3
- Queen Anne's County3
- Caroline County3
- Garrett County2
- Allegany County1
- Kent County1
- Carroll County1
- Frederick County1
- Anne Arundel County1
- Wicomico County1
- Worcester County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20162018
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.