Alert archive / Maryland / River Flood Warnings / 2018
River Flood Warnings in Maryland, December 2018
11 river flood warnings in December 2018. 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 in December 2018. Tap one for its archive.
- River Flood Warnings
- 11
- Busiest day
- December 15, 20186 river flood 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 |
|---|---|---|---|---|
| Dec 15, 11:30 AM EST | River Flood Warning | LWX | Allegany | 11 hr |
| Dec 15, 3:01 PM EST | River Flood Warning | LWX | Allegany | 30 hr |
| Dec 15, 3:03 PM EST | River Flood Warning | LWX | Washington | 61 hr |
| Dec 15, 3:13 PM EST | River Flood Warning | LWX | Frederick | 63 hr |
| Dec 15, 3:15 PM EST | River Flood Warning | LWX | Montgomery | 3 days |
| Dec 15, 3:25 PM EST | River Flood Warning | LWX | Montgomery | 23 hr |
| Dec 16, 3:20 AM EST | River Flood Warning | LWX | Washington | 38 hr |
| Dec 16, 3:21 AM EST | River Flood Warning | LWX | Montgomery | 65 hr |
| Dec 16, 3:21 AM EST | River Flood Warning | LWX | Frederick | 24 hr |
| Dec 20, 5:32 PM EST | River Flood Warning | LWX | Allegany | 11 hr |
| Dec 22, 2:19 PM EST | River Flood Warning | LWX | Montgomery | 38 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20172019
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.