Lower Columbia and I - 5 Corridor in Cowlitz County Severe Watches & Warnings NOAA Weather Radio

Watches & Warnings

Freezing Rain Advisory
Issued: 3:13 PM PST Jan. 16, 2017 – National Weather Service

... Freezing Rain Advisory in effect from 2 am to 2 PM PST Tuesday
below 1000 feet for the Interstate 5 corridor in Cowlitz County...

The National Weather Service in Portland has issued a Freezing
Rain Advisory below 1000 feet... which is in effect from 2 am to
2 PM PST Tuesday.

* Timing... light freezing rain is expected to develop Tuesday
morning and end by Tuesday afternoon.

* Temperatures... are expected to slowly climb above freezing
around Tuesday afternoon... ending the freezing rain.

* Ice accumulation... around a tenth of an inch.

* Impacts... several days of very cold temperatures will make
ground surfaces like roads and sidewalks very receptive to ice
accumulation. It may take a couple hours of temperatures above
freezing to completely end the freezing rain threat at any given
location.

Precautionary/preparedness actions...

A Freezing Rain Advisory means that periods of freezing rain or
freezing drizzle will cause travel difficulties. Be prepared for
slippery roads. Slow down and use caution while driving.





Areal Flood Watch
Issued: 3:28 PM PST Jan. 16, 2017 – National Weather Service

... Flood Watch remains in effect for the north Oregon coast and Coast
Range... Portland/Vancouver Metro area... and southwest Washington
from the Willapa Hills to the South Washington Cascade foothills from
Tuesday morning through late Wednesday night...

The Flood Watch continues for

* portions of northwest Oregon and southwest Washington...
including the following areas... in northwest Oregon... Coast
Range of northwest Oregon... greater Portland Metro area...
lower Columbia and north Oregon coast. In southwest
Washington... Greater Vancouver area... I-5 corridor in Cowlitz
County... South Washington Cascade foothills... South Washington
coast and Willapa Hills.

* From Tuesday morning through late Wednesday night.

* Freezing levels will rise to 8000 feet tonight which will allow
snowmelt to begin in elevations above low level inversions where
colder air is trapped. Heavy rain will begin Tuesday and cause
rises on rivers and creeks draining the Coast Range... South
Washington Cascades... and Willapa Hills. The heavy rain will
likely cause urban flooding in the Portland/Vancouver Metro
areas as the rain will help melt the existing snowpack. Blocked
storm drains may also contribute to ponding of water on streets.

* Rainfall amounts through Thursday...
* Portland/Vancouver Metro area... 1 to 2 inches
* north Coast Range/Willapa Hills... 3 to 6 inches
* South Washington Cascades foothills... 3 to 6 inches

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.

Landslides and debris flows are possible during this flood event.
People... structures and roads located below steep slopes... in
canyons and near the mouths of canyons may be at serious risk
from rapidly moving landslides.





Small Craft for Rough Bar Advisory
Issued: 2:31 PM PST Jan. 16, 2017 – National Weather Service

... Small Craft Advisory for rough bar remains in effect until
4 PM PST Tuesday...

* in the Main Channel...

* general seas... 6 to 8 feet... increasing to around 10 feet
tonight then to 15 feet Tuesday afternoon.

* First Ebb... around 730 PM this evening. Seas near 10 feet.

* Second Ebb... around 815 am Tuesday. Seas near 11 feet.

Precautionary/preparedness actions...

A Small Craft Advisory for rough bar means that wave conditions
are expected to be hazardous to small craft in or near Harbor
entrances.