Seattle and Vicinity Severe Watches & Warnings NOAA Weather Radio

Watches & Warnings

Flood Warning
Issued: 4:46 AM PST Nov. 23, 2017 – National Weather Service

The Flood Warning continues for
the Snoqualmie river near Carnation
* from 1 PM Wednesday until Friday evening.
* At 4:15 am Thursday the stage was 53.7 feet.
* Flood stage is 54.0 feet.
* Minor flooding is forecast.
* Forecast... the river will reach flood stage again midday today,
crest near 55.0 feet late tonight, then fall to below flood stage
Friday.
* Impact... at 54.0 feet, the Snoqualmie river will flood much of The
Farm land and several roads from Fall City downstream through
Carnation and Duvall.


Lat... Lon 4756 12196 4770 12204 4784 12202 4783 12194 4771 12193
      4761 12188




446 am PST Thu Nov 23 2017

... Flood Warning extended until Friday morning...

The Flood Warning continues for
the Snoqualmie river near the falls
* from 11 am Thursday until Friday morning.
* At 3:45 am Thursday the flow was 13300 cfs.
* Flood flow is 20000 cfs.
* Minor flooding is forecast.
* Forecast... the river will rise above flood flow around 11 am
Thursday and crest near 26000 cfs around 4 PM Thursday. The river
will fall below flood flow tonight.
* Impact... at 20000 cfs, the Snoqualmie river will cause widespread
flooding of pasture lands and roads along the river from the town
of Snoqualmie downstream through Fall City. Roads that may become
flooded include Fall City-Carnation, Tolt Hill, and Novelty flats
roads. This river level on the Snoqualmie corresponds roughly to a
phase 3 flood in the King County flood system.


Lat... Lon 4742 12175 4752 12186 4756 12196 4761 12188 4758 12178
      4756 12170




428 am PST Thu Nov 23 2017

The Flood Warning continues for
the White River at r street
* from 7 am Thursday until further notice.
* At 3:45 am Thursday the flow was 5398 cfs.
* Flood flow is 5500 cfs.
* Minor flooding is forecast.
* Forecast... the river will reach flood flow around 7 am Thursday
and rise gradually to around 6000 cfs through Saturday.
* Impact... at 5500 cfs, river flooding is likely to occur near low
bank areas around and downstream of the Stewart street bridge in
the city of Sumner.


Lat... Lon 4721 12214 4724 12219 4719 12223 4724 12230 4732 12226
      4732 12214




Areal Flood Watch
Issued: 5:39 PM PST Nov. 22, 2017 – National Weather Service

... Flood Watch remains in effect through Thursday afternoon...

The Flood Watch continues for

* portions of northwest Washington and west central Washington,
including the following counties, in northwest Washington,
Clallam, Grays Harbor, Jefferson, and Whatcom. In west central
Washington, King, Lewis, Pierce, and Snohomish.

* Through Thursday afternoon

* the next front will move through tonight and Thanksgiving day,
with a forecast of generally 1 to 3.5 inches over the mountains.
This is slightly less than previously forecast as the models are
all trending down in amounts. River forecast updates will likely
show some lover crests with the new qpf numbers.The snow level
will be around 7500 feet as this system arrives, falling to 4000
feet late Thursday as precipitation decreases.

* Flooding is already occurring on several western Washington
rivers. With this second round of rainfall tonight and
Thursday, there is a possibility that flooding will become
more widespread and/or prolonged. There is at least a minor
threat that any flood-prone river in our area reaching flood
stage.

Precautionary/preparedness actions...

A Flood Watch means there is a potential for flooding based on
current forecasts.

You should monitor later forecasts and be alert for possible
flood warnings. Those living in areas prone to flooding should be
prepared to take action should flooding develop.



Www.Weather.Gov/Seattle


Special Statement
Issued: 3:10 AM PST Nov. 23, 2017 – National Weather Service

... Significant rainfall this week has increased the landslide threat
in western Washington through at least tonight...

Recent rainfall has increased soil moisture to high levels across
western Washington. Additional heavy rainfall is expected at times
today. Lowland areas may get another half to one inch of rain and
maintain the heightened threat of landslides.

For more information about current conditions, visit
www.Weather.Gov/Seattle, select hydrology information under rivers
and lakes, and then scroll down for the link to the landslide
information pages.

For more information on landslides, visit the website for the
Washington state department of natural resources landslide
geologic hazards at: http://bit.Ly/2mta3wn


Www.Weather.Gov/Seattle/

310 am PST Thu Nov 23 2017

... Significant rainfall this week has increased the landslide threat
in western Washington through at least tonight...

Recent rainfall has increased soil moisture to high levels across
western Washington. Additional heavy rainfall is expected at times
today. Lowland areas may get another half to one inch of rain and
maintain the heightened threat of landslides.

For more information about current conditions, visit
www.Weather.Gov/Seattle, select hydrology information under rivers
and lakes, and then scroll down for the link to the landslide
information pages.

For more information on landslides, visit the website for the
Washington state department of natural resources landslide
geologic hazards at: http://bit.Ly/2mta3wn


Www.Weather.Gov/Seattle/


Areal Flood Watch
Issued: 5:39 PM PST Nov. 22, 2017 – National Weather Service

... Flood Watch remains in effect through Thursday afternoon...

The Flood Watch continues for

* portions of northwest Washington and west central Washington,
including the following counties, in northwest Washington,
Clallam, Grays Harbor, Jefferson, and Whatcom. In west central
Washington, King, Lewis, Pierce, and Snohomish.

* Through Thursday afternoon

* the next front will move through tonight and Thanksgiving day,
with a forecast of generally 1 to 3.5 inches over the mountains.
This is slightly less than previously forecast as the models are
all trending down in amounts. River forecast updates will likely
show some lover crests with the new qpf numbers.The snow level
will be around 7500 feet as this system arrives, falling to 4000
feet late Thursday as precipitation decreases.

* Flooding is already occurring on several western Washington
rivers. With this second round of rainfall tonight and
Thursday, there is a possibility that flooding will become
more widespread and/or prolonged. There is at least a minor
threat that any flood-prone river in our area reaching flood
stage.

Precautionary/preparedness actions...

A Flood Watch means there is a potential for flooding based on
current forecasts.

You should monitor later forecasts and be alert for possible
flood warnings. Those living in areas prone to flooding should be
prepared to take action should flooding develop.



Www.Weather.Gov/Seattle