River Flood Warnings in Maryland
285 river flood warnings since 1986. 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 river flood warnings reaches back to 2005.
River Flood Warnings by county
Each county as a circle sized by its count since 1986. Tap one for its archive.
- River Flood Warnings
- 285
- Busiest year
- 201868 river flood warnings
- Average year
- 17over 17 years on file
Over time
By year
Before late 2005 the archive holds only tornado, severe thunderstorm, flash flood and marine warnings, and from 1997 SPC's watches, so the jump that year is the archive widening, not the weather.
By month of the year
By county
Every county with at least one alert. A county page lists each alert that covered it.
The latest river flood warnings
The most recent on file, newest first.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 14, 10:37 AM EDT | River Flood Warning | LWX | Montgomery | 52 hr |
| May 14, 10:37 AM EDT | River Flood Warning | LWX | Washington | 27 hr |
| May 14, 9:29 AM EDT | River Flood Warning | LWX | Washington | 31 hr |
| May 14, 4:35 AM EDT | River Flood Warning | LWX | Washington | 42 hr |
| May 14, 4:35 AM EDT | River Flood Warning | LWX | Montgomery | 67 hr |
| May 14, 4:35 AM EDT | River Flood Warning | LWX | Frederick | 56 hr |
| May 13, 9:29 PM EDT | River Flood Warning | LWX | Washington | 61 hr |
| May 13, 4:09 PM EDT | River Flood Warning | LWX | Allegany | 21 days |
| May 13, 4:02 PM EDT | River Flood Warning | LWX | Allegany | 37 hr |
| May 13, 4:00 PM EDT | River Flood Warning | LWX | Washington | 46 hr |
| May 13, 3:59 PM EDT | River Flood Warning | LWX | Allegany | 24 hr |
| May 13, 2:20 PM EDT | River Flood Warning | LWX | Allegany | 19 hr |
Nearby
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.