Northwest Montgomery

Advisories Radar Cities

Flood Warning

Expires 9:42 AM EDT on July 26, 2018
Statement as of 10:41 am EDT on July 23, 2018

The National Weather Service in Sterling VA has issued a
* Flood Warning for
the Seneca Creek at Dawsonville.
* From this evening until Thursday morning.
* At 10 am Monday the stage was 4.5 feet and steady.
* Flood stage is 7.5 feet.
* Minor flooding is forecast.
* Forecast... rise above flood stage by early this evening and crest
near 9.3 feet by early Wednesday morning. The river will fall below
flood stage by early Thursday morning.
* Impact... at 11.0 feet... water from the creek enters the gage house.
Reports from this location may become sporadic. Multiple roads are
flooded, and water is also reaching the first floor of Old Black
Rock Mill.
* Flood history... this crest compares to a previous crest of 8.9 feet
on Jul 29 2017.



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

Seneca Creek
Dawsonville 7.5 4.5 Mon 10 am 4.9 7.4 8.1 8.2 9.3 Wed 2 am

Lat... Lon 3914 7736 3914 7730 3912 7729 3909 7730
      3907 7731 3907 7736 3910 7736




Flood Watch, Flash Flood Watch

Expires 4:00 AM EDT on July 24, 2018
Statement as of 10:48 am EDT on July 23, 2018

The National Weather Service in Sterling VA has issued a
* Flood Watch for
the Potomac River at Edwards Ferry.
* From Wednesday morning until further notice.
* At 09am Monday the stage was 9.4 feet.
* Flood stage is 15.0 feet.
* Moderate flooding is possible.
* Flood stage may be reached by late Wednesday morning. Preparations
for flooding should be taken by this time.



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


Smz/je


459 am EDT Mon Jul 23 2018

... Flash Flood Watch in effect from noon EDT today through late
tonight...
... Flash Flood Watch will expire at 5 am EDT early this morning...

The National Weather Service in Sterling Virginia has issued a

* Flash Flood Watch for portions of Maryland, the District of
Columbia, and Virginia, including the following areas, in
Maryland, Anne Arundel, Calvert, Carroll, central and
southeast Howard, central and southeast Montgomery, Charles,
Frederick MD, northern Baltimore, northwest Harford, northwest
Howard, northwest Montgomery, Prince Georges, southeast
Harford, southern Baltimore, and St. Marys. The District of
Columbia. In Virginia, Arlington/Falls Church/Alexandria,
eastern Loudoun, Fairfax, King George, Prince
William/Manassas/Manassas Park, Spotsylvania, and Stafford.

* From noon EDT today through late tonight

* multiple rounds of showers and thunderstorms are expected this
afternoon into tonight. There is potential for repetitive rounds
of precipitation combined with saturated ground and high stream
levels from recent rainfall, this precipitation could lead to
flash flooding. The risk of flash flooding is expected to
persist through Wednesday and the Flash Flood Watch will likely
be extended through then.

* Urban areas, locations along small streams and creeks, and poor
drainage areas are most vulnerable to flash flooding.

Precautionary/preparedness actions...



Precautionary/preparedness actions...

A Flash Flood Watch means that conditions may develop that lead
to flash flooding. Flash flooding is a very dangerous situation.

You should monitor later forecasts and be prepared to take action
should flash flood warnings be issued.


The Flash Flood Watch for portions of Maryland, the District of
Columbia, and Virginia will expire at 5 am EDT early this
morning.





Flood Watch, Flash Flood Watch

Expires 4:00 AM EDT on July 24, 2018
Statement as of 10:48 am EDT on July 23, 2018

The National Weather Service in Sterling VA has issued a
* Flood Watch for
the Potomac River at Edwards Ferry.
* From Wednesday morning until further notice.
* At 09am Monday the stage was 9.4 feet.
* Flood stage is 15.0 feet.
* Moderate flooding is possible.
* Flood stage may be reached by late Wednesday morning. Preparations
for flooding should be taken by this time.



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


Smz/je


459 am EDT Mon Jul 23 2018

... Flash Flood Watch in effect from noon EDT today through late
tonight...
... Flash Flood Watch will expire at 5 am EDT early this morning...

The National Weather Service in Sterling Virginia has issued a

* Flash Flood Watch for portions of Maryland, the District of
Columbia, and Virginia, including the following areas, in
Maryland, Anne Arundel, Calvert, Carroll, central and
southeast Howard, central and southeast Montgomery, Charles,
Frederick MD, northern Baltimore, northwest Harford, northwest
Howard, northwest Montgomery, Prince Georges, southeast
Harford, southern Baltimore, and St. Marys. The District of
Columbia. In Virginia, Arlington/Falls Church/Alexandria,
eastern Loudoun, Fairfax, King George, Prince
William/Manassas/Manassas Park, Spotsylvania, and Stafford.

* From noon EDT today through late tonight

* multiple rounds of showers and thunderstorms are expected this
afternoon into tonight. There is potential for repetitive rounds
of precipitation combined with saturated ground and high stream
levels from recent rainfall, this precipitation could lead to
flash flooding. The risk of flash flooding is expected to
persist through Wednesday and the Flash Flood Watch will likely
be extended through then.

* Urban areas, locations along small streams and creeks, and poor
drainage areas are most vulnerable to flash flooding.

Precautionary/preparedness actions...



Precautionary/preparedness actions...

A Flash Flood Watch means that conditions may develop that lead
to flash flooding. Flash flooding is a very dangerous situation.

You should monitor later forecasts and be prepared to take action
should flash flood warnings be issued.


The Flash Flood Watch for portions of Maryland, the District of
Columbia, and Virginia will expire at 5 am EDT early this
morning.





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