Event extended (time). Flood Warning from 9/3/2021 2:00 AM EDT until further notice for Central Maryland, Delmarva/Southern MD. More information.
Interactive NWS Alert
Radar valid at 315 am EDT, Sep 3rd 2021
...The Flood Warning is extended for the following rivers in
Conococheague Creek at Fairview affecting Washington County.
Susquehanna Below Conowingo Dam affecting Cecil and Harford
...The Flood Warning continues for the following rivers in
Potomac River at Shepherdstown affecting Jefferson, Washington
and Berkeley Counties.
Monocacy River near Frederick affecting Frederick County.
For the Potomac River...including Paw Paw, Hancock, Dam Number Five,
Shepherdstown, Harpers Ferry, Point of Rocks, Edwards Ferry, Little
Falls...Minor flooding is forecast.
For the Monocacy River...including Frederick...Moderate flooding is
For the Susquehanna River...including Conowingo Dam...Minor flooding
306 PM EDT Thu Sep 2 2021
...The Flood Warning is now in effect until further notice...
The Flood Warning continues for
the Susquehanna Below Conowingo Dam.
* From late tonight until further notice.
* At 2:30 PM EDT Thursday the stage was 22.2 feet, or 1.3 feet below
* Flood stage is 23.5 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage just
after midnight tonight and continue rising to 23.5 feet just after
midnight tonight. Additional rises are possible thereafter.
* Impact...At 23.7 feet, Minor flooding begins in the town of Port
* Flood History...This crest compares to a previous crest of 23.5
feet on 05/18/1989.
River Name Fld Observed Crest
Location Stg Stg Day/Time 6 hr 12hr 18 Stg Time Date
Conowingo Dam 23.5 22.2 Thu 2 pm MSG MSG MSG MSG unknown
LAT...LON 3966 7622 3968 7616 3955 7604 3952 7611
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