Central and Southeast Montgomery Severe Watches & Warnings NOAA Weather Radio

Watches & Warnings

Flood Warning, Areal Flood Warning
Issued: 2:35 PM EST Dec. 16, 2018 – National Weather Service

... Flood Warning extended until late Tuesday night...
the Flood Warning continues for
the Potomac River at Edwards Ferry.
* From mid-afternoon today until late Tuesday night.
* At 2 PM Sunday the stage was 14.2 feet.
* Flood stage is 15.0 feet.
* Moderate flooding is forecast.
* Forecast... rise above flood stage by mid-afternoon today and crest
near 22.3 feet by early tomorrow afternoon. The river will fall
below flood stage by late Tuesday evening.
* Impact... at 24.0 feet... water reaches the first floor ceiling at
Whites Ferry store. Significant portions of the c&o canal towpath
are flooded. Backwater flooding is affecting 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 sun sun Mon Mon stg day time

Potomac River
Edwards Ferry 15.0 14.2 sun 2 PM 16.6 19.7 21.8 22.3 Mon 1 PM

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




229 PM EST sun Dec 16 2018

... Forecast flooding increased from minor to moderate severity... the
Flood Warning continues for
the Potomac River at Little Falls.
* Until Tuesday evening.
* At 2 PM Sunday the stage was 7.6 feet and steady.
* Flood stage is 10.0 feet.
* Moderate flooding is forecast.
* Forecast... rise above flood stage by overnight tonight and crest
near 12.5 feet by early tomorrow afternoon. The river will fall
below flood stage by early Tuesday afternoon.
* 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 12.4 feet
on Jun 5 2018.



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

Potomac River
Little Falls 10.0 7.6 sun 2 PM 8.5 10.0 11.6 12.5 Mon 1 PM

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



143 PM EST sun Dec 16 2018

The National Weather Service in Sterling Virginia has extended the

* Flood Warning for...
east central Montgomery County in central Maryland...
north central Prince Georges County in central Maryland...

* until 530 PM EST.

* At 143 PM EST, reporting gauges indicated flooding near the
Patuxent River. The gauge at Laurel remains near the flood
stage of 9.5 feet. At 9.5 feet, water overflows the banks into
nearby park land.

Precautionary/preparedness actions...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.


Lat... Lon 3924 7705 3921 7701 3917 7701 3914 7695
      3913 7689 3909 7683 3910 7686 3909 7689
      3911 7693 3916 7702 3921 7703


Bjl


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