Central and Southeast Montgomery Severe Watches & Warnings NOAA Weather Radio

Watches & Warnings

Flood Warning
Issued: 3:57 AM EST Dec. 17, 2018 – National Weather Service

... Flood Warning extended until Tuesday evening...
the Flood Warning continues for
the Potomac River at Edwards Ferry.
* Until Tuesday evening.
* At 3 am Monday the stage was 20.2 feet.
* Flood stage is 15.0 feet.
* Moderate flooding is occurring and moderate flooding is forecast.
* Recent activity... the maximum river stage in the 24 hours ending at
3 am Monday was 20.2 feet.
* Forecast... the river will continue rising to near 21.0 feet by
early this afternoon. The river will fall below flood stage late
tomorrow afternoon.
* Impact... at 20.0 feet... the basements of the Edwards Ferry
lockhouse and rileys lockhouse are flooded. Backwater flooding may
affect homes on the Loudoun County side of the river near Broad Run
in Sterling.
* Flood history... this crest compares to a previous crest of 21.6 feet
on Sep 29 2018.



River flood observed 2pm 8pm 2am 8am crest
location stage stg day time Mon Mon Tue Tue stg day time

Potomac River
Edwards Ferry 15.0 20.2 Mon 3 am 21.0 20.1 19.2 17.6 21.0 Mon 1 PM

Lat... Lon 3923 7744 3913 7745 3908 7730 3903 7736
      3905 7745 3911 7755 3920 7754




356 am EST Mon Dec 17 2018

... Flood Warning extended until Tuesday afternoon...
the Flood Warning continues for
the Potomac River at Little Falls.
* Until Tuesday afternoon.
* At 4 am Monday the stage was 10.7 feet.
* Flood stage is 10.0 feet.
* Minor flooding is occurring and moderate flooding is forecast.
* Recent activity... the maximum river stage in the 24 hours ending at
4 am Monday was 10.7 feet.
* Forecast... the river will continue rising to near 12.0 feet by
early this afternoon. The river will fall below flood stage
tomorrow morning.
* Impact... at 12.0 feet... the c&o canal overflows at the Great Falls
tavern. Water covers the towpath in many areas.
* Flood history... this crest compares to a previous crest of 11.0 feet
on Sep 29 2018.



River flood observed 2pm 8pm 2am 8am crest
location stage stg day time Mon Mon Tue Tue stg day time

Potomac River
Little Falls 10.0 10.7 Mon 4 am 12.0 11.7 11.0 10.0 12.0 Mon 1 PM

Lat... Lon 3908 7730 3904 7723 3902 7721 3895 7706
      3891 7712 3896 7724 3903 7736



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