* WHAT...Wet snow. Additional snow accumulations of one-half inch to
two inches.
* WHERE...Kittitas Valley.
* WHEN...Until 4 AM PST Thursday.
* IMPACTS...Even light snowfall amounts can accumulate on roads and
cause dangerous driving conditions due to slippery and
snow-covered roads.
* WHAT...South winds of 20 to 30 mph with gusts 45 to 55 mph
tonight. After 3 am Thursday, winds will become west to southwest
20 to 30 mph with gusts 55 to 65 mph. These strong winds will be
primarily across the higher terrain. Winds will gradually ease
after 8 am.
* WHERE...Willapa Hills.
* WHEN...Until 10 AM PST Thursday.
* IMPACTS...Damaging winds could blow down trees and power lines.
Some power outages are expected. Travel will be difficult,
especially for high profile vehicles.
* WHAT...South winds 20 to 30 mph with gusts 55 to 65 mph are
expected along the headlands and open exposed areas like the
beaches. Elsewhere, expect gusts of 45 to 55 mph.
* WHERE...In Oregon, Clatsop County Coast. In Washington, South
Washington Coast.
* WHEN...Until 8 AM PST Thursday.
* IMPACTS...Damaging winds could blow down trees and power lines.
Some power outages are expected. Travel will be difficult,
especially for high profile vehicles.
* ADDITIONAL DETAILS...EExpect two bursts of strong winds. First,
ahead of the cold front as it moves ashore around 2 am Thursday.
Then, winds ease a bit, then another burst of strong west to
southwest winds from 4 to 8 am as low pressure north of the region
moves inland.
* WHAT...Winds will increase through 1 am Thursday, becoming south
to southwest 15 to 30 mph, with gusts 35 to 50 mph. Winds will
gradually ease after 6 am.
* WHERE...Central and Southern Willamette Valley, Tualatin Valley,
Portland West Hills and Chehalem Mountain, Inner Portland Metro,
North Clark County Lowlands, and Inner Vancouver Metro.
* WHEN...Until 6 AM PST Thursday.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
* WHAT...Heavy snow. Additional snow accumulations of 4 to 12 inches
above 3500 feet. Winds gusting as high as 40 mph with blowing snow.
* WHERE...Upper Slopes of the Eastern Washington Cascades Crest.
* WHEN...Until 10 PM PST Thursday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous. Significant snowfall with
periods of heavy snowfall rates will combine with low visibility
to create very difficult driving conditions.
* WHAT...Snow. Additional snow accumulations of 4 to 10 inches above
4000 feet. Winds gusting as high as 45 mph with blowing snow.
* WHERE...In Oregon, Northern Blue Mountains of Oregon. In
Washington, Northwest Blue Mountains.
* WHEN...Until 4 PM PST Thursday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous. Travel could be difficult due
to periods of moderate to heavy snow. Gusty winds could bring down
tree branches.
* ADDITIONAL DETAILS...Steady snow overnight will turn to snow
showers Thursday morning and afternoon.
* WHAT...Heavy snow. Additional snow accumulations of 3 to 9 inches
above 3500 feet. Winds gusting as high as 40 mph with blowing snow.
* WHERE...Lower Slopes of the Eastern Washington Cascades Crest.
* WHEN...Until 10 AM PST Thursday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous. Travel could be difficult due
to periods of moderate to heavy snow.
* WHAT...Wet snow. Additional snow accumulations of one-half inch to
two inches.
* WHERE...Kittitas Valley.
* WHEN...Until 4 AM PST Thursday.
* IMPACTS...Even light snowfall amounts can accumulate on roads and
cause dangerous driving conditions due to slippery and
snow-covered roads.
* ADDITIONAL DETAILS...Snow is expected to transition to rain by
early Thursday morning.
* WHAT...Heavy snow. Total snow accumulations between 12 and 24
inches. Winds gusting as high as 45 mph.
* WHERE...Stehekin, Stevens Pass, and Holden Village.
* WHEN...Until 10 PM PST Thursday.
* IMPACTS...Travel could be very difficult leading up to and over
Stevens Pass. Heavy wet snow falling at one inch per hour or more
at times could lead to isolated tree damage and power outages.
Areas of blowing snow could significantly reduce visibility.
* ADDITIONAL DETAILS...Lighter snow amounts will be possible at
Stehekin due to marginal temperatures near or above freezing.
* WHAT...Heavy snow. Total snow accumulations between 8 and 15
inches. Winds gusting as high as 35 mph.
* WHERE...Mazama, Loup Loup Pass, Twisp, Winthrop, Methow, and
Conconully.
* WHEN...Until 1 PM PST Thursday.
* IMPACTS...Travel could be very difficult. Heavy wet snow falling
at one inch per hour or more at times could lead to isolated tree
damage and power outages.
* WHAT...Snow expected. Total snow accumulations between 2 and 6
inches in the valleys and 5 to 8 inches in the mountains.
* WHERE...Tiger, Springdale-Hunters Road, Colville, Fruitland,
Orin-Rice Road, Kettle Falls, Chewelah, Metaline Falls, Newport,
Northport, Ione, Deer Park, Flowery Trail Road, and Metaline.
* WHEN...Until 1 PM PST Thursday.
* IMPACTS...Lowest confidence in snow amounts is along the Columbia
and Pend Oreille Rivers where warmer temperatures could limit
accumulations.
* ADDITIONAL DETAILS...Lowest confidence in snow amounts is along
the Columbia and Pend Oreille Rivers where warmer temperatures
could limit accumulations.
* WHAT...Heavy snow. Total snow accumulations between 4 and 10
inches.
* WHERE...Boulder Creek Road, Sherman Pass, Republic, Wauconda,
Chesaw Road, Inchelium, and Highway 20 Wauconda Summit.
* WHEN...Until 1 PM PST Thursday.
* IMPACTS...Travel could be very difficult. Heavy wet snow falling
at one inch per hour or more at times could lead to isolated tree
damage and power outages.
* WHAT...Heavy snow. Total snow accumulations between 9 and 16
inches.
* WHERE...Leavenworth and Plain.
* WHEN...Until 1 PM PST Thursday.
* IMPACTS...Travel could be very difficult. Heavy wet snow falling
at one inch per hour or more at times could lead to isolated tree
damage and power outages.
* ADDITIONAL DETAILS...The heaviest snow is expected to fall between
10PM and 4AM Thursday.
* WHAT...Heavy snow. Total snow accumulations between 2 and 6 inches
below 2500 feet and 6 to 10 inches on higher benches above 2500
feet.
* WHERE...Omak, Tonasket, Oroville, Okanogan, Bridgeport, Brewster,
Waterville, Badger Mountain Road, Nespelem, Disautel Pass, and
Mansfield.
* WHEN...Until 7 AM PST Thursday.
* IMPACTS...Travel could be very difficult. Snowfall rates of one
inch per hour are expected at times Christmas night into early
Thursday morning.
* ADDITIONAL DETAILS...Lowest confidence in snow amounts is along
the Columbia and Okanogan Rivers where warmer temperatures could
limit accumulations.
* WHAT...Heavy snow. Snow accumulations between 4 and 8 inches.
* WHERE...Number 2 Canyon, Entiat, Cashmere, Number 1 Canyon,
Wenatchee, Chelan, and Pangborn Airport.
* WHEN...Until 7 AM PST Thursday.
* IMPACTS...Travel could be very difficult. Snowfall rates of one
inch per hour are expected at times Christmas night into early
Thursday morning.
* ADDITIONAL DETAILS...Total snow accumulations between 1 and 4
inches at lower elevations near the Columbia River.
* WHAT...Snow expected for the Highway 2 Corridor Across the Upper
Columbia Basin. Total snow accumulations between 2 and 5 inches.
Winds gusting as high as 35 mph.
* WHERE...Grand Coulee, Wilbur, Creston, and Coulee City.
* WHEN...Until 7 AM PST Thursday.
* IMPACTS...Plan on slippery road conditions.
* WHAT...Wet snow. Total snow accumulations between 2 and 5 inches.
* WHERE...Quincy and Ephrata.
* WHEN...Until 4 AM PST Thursday.
* IMPACTS...Plan on slippery road conditions.
* ADDITIONAL DETAILS...Temperatures will warm above freezing early
Thursday morning and snow will change over to rain.
* WHAT...Snow expected above 4500 feet. From 4500 feet to 5000 feet,
total snow accumulation up to 6 to 11 inches. Above 5000 feet,
total snow accumulations of 10 to 18 inches. Winds gusting as high
as 45 mph tonight into Thursday.
* WHERE...South Washington Cascades and the Northern and Central
Cascades of Oregon.
* WHEN...Until 10 PM PST Thursday.
* IMPACTS...Travel could be very difficult. Gusty winds could bring
down tree branches.
AVWOTX
The following message is transmitted at the request of the
Northwest Avalanche Center.
...The Northwest Avalanche Center in Seattle has issued an Avalanche
Warning...
* WHAT...High avalanche danger is forecast Wednesday night and
Thursday.
* WHERE...Stevens and Snoqualmie Passes, the west slopes of the
Washington Cascades, and Mt Hood.
* WHEN...In effect from 18:00 PST Wed Dec 25th through 18:00 PST
Thu Dec 26th.
* IMPACTS...Heavy snow, strong winds, and a low-elevation transition
from snow to rain will lead to very dangerous avalanche conditions
through Thursday. High avalanche danger creates risk at all
elevations.
* PRECAUTIONARY / PREPAREDNESS ACTIONS...Very dangerous avalanche
conditions exist over the next 24 hours. Travel in avalanche
terrain is not recommended.
Consult https://www.nwac.us/ or www.avalanche.org for more detailed
information.
Similar avalanche danger may exist at locations outside the coverage
area of this or any avalanche center.
AVWPDT
The following message is transmitted at the request of the
Northwest Avalanche Center.
...The Northwest Avalanche Center in Seattle has issued an Avalanche
Warning...
* WHAT...High avalanche danger is forecast Wednesday night and
Thursday.
* WHERE...Stevens and Snoqualmie Passes, the west slopes of the
Washington Cascades, and Mt Hood.
* WHEN...In effect from 18:00 PST Wed Dec 25th through 18:00 PST
Thu Dec 26th.
* IMPACTS...Heavy snow, strong winds, and a low-elevation transition
from snow to rain will lead to very dangerous avalanche conditions
through Thursday. High avalanche danger creates risk at all
elevations.
* PRECAUTIONARY / PREPAREDNESS ACTIONS...Very dangerous avalanche
conditions exist over the next 24 hours. Travel in avalanche
terrain is not recommended.
Consult https://www.nwac.us/ or www.avalanche.org for more detailed
information.
Similar avalanche danger may exist at locations outside the coverage
area of this or any avalanche center.
