* WHAT...Snow expected. Total snow accumulations of 6 to 12 inches.
* WHERE...Upper Slopes of the Eastern Washington Cascades Crest.
* WHEN...Until 4 PM PST Sunday.
* IMPACTS...Significant snowfall with periods of heavy snowfall
rates will combine with low visibility to create very difficult
driving conditions.
* WHAT...Snow expected. Total snow accumulations of 5 to 10 inches.
* WHERE...In Oregon, Northern Blue Mountains of Oregon. In
Washington, Northwest Blue Mountains.
* WHEN...Until 4 PM PST Sunday.
* IMPACTS...Significant snowfall with periods of heavy snowfall
rates will combine with low visibility to create very difficult
driving conditions.
* WHAT...Sneaker waves possible on the beaches.
* WHERE...North and Central Coast of Oregon, and South
Washington Coast.
* WHEN...From late tonight through Sunday evening.
* IMPACTS...Waves can run up significantly farther on a beach than
normal, including over rocks and jetties. Sneaker waves can
suddenly knock people off of their feet and quickly pull them
into the frigid ocean which may lead to serious injury or
drowning.
* WHAT...Snow expected above 3000 feet. Total snow accumulations 6
to 10 inches. Winds gusting as high as 40 mph.
* WHERE...In Oregon, North Oregon Cascades. In Washington, South
Washington Cascades.
* WHEN...Until 4 PM PST Sunday.
* IMPACTS...Travel could be very difficult.
* ADDITIONAL DETAILS...Snow levels will lower to 3000 feet tonight
with the period of heaviest snowfall expected to occur late
tonight through Sunday morning.
* WHAT...Heavy mixed precipitation expected. Freezing rain will
transition to snow early this afternoon. Additional ice
accumulations up to 0.10". Snow then becomes heavier this evening.
Total snow accumulations between 1 and 3 feet by Sunday afternoon
above 3500 feet.
* WHERE...Holden Village, Stehekin, and Stevens Pass.
* WHEN...Until 4 PM PST Sunday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous.
* ADDITIONAL DETAILS...Snow totals for Stehekin and Coles Corner
will be between 1 and 3 inches.
* WHAT...Mixed precipitation expected. Total snow and sleet
accumulations of 2 to 6 inches over the mountains, up to 2 inches
of snow near the Canadian border, and additional ice accumulations
around 0.10 inches.
* WHERE...Bonners Ferry, Springdale-Hunters Road, Athol, Sandpoint,
Clark Fork, Tiger, Metaline, Deer Park, Ione, Eastport, Flowery
Trail Road, Newport, Orin-Rice Road, Schweitzer Mountain Road,
Northport, Priest River, Fruitland, Chewelah, Colville, Kettle
Falls, and Metaline Falls.
* WHEN...Until 10 PM PST this evening.
* IMPACTS...Plan on slippery road conditions.
* ADDITIONAL DETAILS...Additional light snow is expected through
Sunday morning.
* WHAT...Moderate mixed precipitation expected. Freezing rain with
ice accumulations up to a quarter of an inch. Snow then becomes
heavier with total snow accumulations of 4 to 8 inches tonight
into Sunday near the Cascade Crest.
* WHERE...Loup Loup Pass, Leavenworth, Twisp, Conconully, Methow,
Winthrop, Mazama, and Plain.
* WHEN...Until 7 PM PST this evening.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick.
* WHAT...Mixed precipitation expected. Total ice accumulations of a
tenth of an inch or less. Snow accumulation up to 1 inch around
the West Plains this afternoon and evening.
* WHERE...Portions of Central, East Central, North Central, and
Northeast Washington.
* WHEN...Until 7 PM PST this evening.
* IMPACTS...Plan on slippery road conditions.
* ADDITIONAL DETAILS...Temperatures will slowly warm above freezing
this morning, but there will continue to be cold pockets where
freezing rain will continue through the afternoon.
* WHAT...Heavy snow expected at or above elevations greater than
3000 ft. Total snow accumulations between 10 and 16 inches. Winds
gusting as high as 40 mph.
* WHERE...West Slopes North Cascades and Passes and West Slopes
North Central Cascades and Passes.
* WHEN...From 4 PM this afternoon to 4 PM PST Sunday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous. Travel could be very difficult
to impossible.
* ADDITIONAL DETAILS...Expect 6 to 10 inches of snow at Snoqualmie
Pass. Stevens and Snoqualmie Passes are observing freezing rain
early this morning. Expect slick roads prior to the transition to
snow and onset of snow on roadways.
* WHAT...Snow expected at or above elevations greater than 3000 ft.
Total snow accumulations between 6 to 10 inches. Winds gusting as
high as 45 mph.
* WHERE...West Slopes South Central Cascades and Passes.
* WHEN...From 4 PM this afternoon to 4 PM PST Sunday.
* IMPACTS...Plan on slippery road conditions.
* ADDITIONAL DETAILS...Freezing rain may mix in prior to the
transition to snow. This will cause slick roadways prior to the
onset of snow onto roadways.
* WHAT...Snow expected. Total snow accumulations up to 10 inches.
Winds gusting as high as 40 mph.
* WHERE...Upper Slopes of the Eastern Washington Cascades Crest.
* WHEN...From 4 PM this afternoon to 4 PM PST Sunday.
* IMPACTS...Periods of moderate to heavy snow will cause low
visibilities and create difficult driving conditions.
* WHAT...Snow expected. Total snow accumulations of 5 to 9 inches.
Winds gusting as high as 40 mph.
* WHERE...In Oregon, Northern Blue Mountains of Oregon. In
Washington, Northwest Blue Mountains.
* WHEN...From 4 PM this afternoon to 4 PM PST Sunday.
* IMPACTS...Periods of moderate and heavy snow will cause low
visibilities to create difficult driving conditions.
* WHAT...Freezing rain. Additional ice accumulations around a light
glaze. Winds gusting as high as 30 mph.
* WHERE...Kittitas Valley and Lower Slopes of the Eastern Washington
Cascades Crest.
* WHEN...Until 4 PM PST this afternoon.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous.
* WHAT...Heavy mixed precipitation expected. Freezing rain and light
snow is expected first through Saturday morning with ice
accumulations up to a quarter of an inch. Snow then becomes
heavier with Total snow accumulations up to 12 to 18 inches
tonight into Sunday. Winds gusting as high as 35 mph.
* WHERE...Holden Village, Stevens Pass, and Stehekin.
* WHEN...Until 4 PM PST Sunday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous.
* WHAT...Mixed precipitation expected. Total snow and sleet
accumulations of 2 to 6 inches over the mountains and ice
accumulations around 0.10 to 0.20 inches.
* WHERE...Tiger, Sandpoint, Northport, Springdale-Hunters Road,
Ione, Eastport, Kettle Falls, Priest River, Fruitland, Metaline,
Colville, Athol, Deer Park, Chewelah, Flowery Trail Road, Clark
Fork, Newport, Bonners Ferry, Metaline Falls, Orin-Rice Road, and
Schweitzer Mountain Road.
* WHEN...Until 10 PM PST this evening.
* IMPACTS...Travel could be very difficult.
* ADDITIONAL DETAILS...Additional light snow is expected in the
mountains through Sunday morning.
* WHAT...Moderate mixed precipitation expected. Freezing rain and
light snow is expected this morning with ice accumulations up to a
quarter of an inch. Snow then becomes heavier with Total snow
accumulations of 4 to 8 inches tonight into Sunday near the
Cascade Crest . Winds gusting as high as 35 mph.
* WHERE...Mazama, Loup Loup Pass, Winthrop, Methow, Plain, Twisp,
Leavenworth, and Conconully.
* WHEN...Until 7 PM PST this evening.
* IMPACTS...Plan on slippery road conditions.
* WHAT...Mixed precipitation expected. Total ice accumulations of a
tenth of an inch or less and little to no snow accumulation. Some
localized ice amounts of up to two tenths of an inch is possible
from west of Spokane towards Sprague and Creston.
* WHERE...Portions of Central, East Central, North Central, and
Northeast Washington.
* WHEN...Until 7 PM PST this evening.
* IMPACTS...Plan on slippery road conditions.
* ADDITIONAL DETAILS...Temperatures will slowly warm above freezing
this morning, but there will continue to be cold pockets where
freezing rain will continue through the afternoon.
* WHAT...Flooding caused by excessive rainfall continues to be
possible.
* WHERE...A portion of northwest Washington, including the following
county, Mason.
* WHEN...From this afternoon through Sunday evening.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
* ADDITIONAL DETAILS...
- A storm system will bring 2 to 3 inches of rain, possibly
more to the Olympic mountains into Sunday morning. With snow
levels above 7000 feet for the bulk of the precipitation,
most of that will be rain and that could be enough to drive
the Skokomish River above flood stage. The current river
forecast has it cresting just below flood stage Sunday
morning.
- http://www.weather.gov/safety/flood
* WHAT...Light winds and limited air movement will lead to a period
of stagnant air conditions. This scenario could result in the
build up of air pollutants over time.
* WHERE...Foothills of the Northern and Central Oregon Cascades,
North and Central Coast Range Valleys of Oregon, Lower Columbia
River and Cowlitz River Valleys, Central Willamette Valley,
Tualatin Valley, Outer Southeast Portland Metro, Willapa and
Wahkiakum Lowlands, North Clark County Lowlands, and South
Washington Cascade Foothills.
* WHEN...Until 4 AM PST Saturday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems.
* WHAT...Light winds and limited air movement will lead to a period
of stagnant air conditions. This scenario could result in the
build up of air pollutants over time.
* WHERE...Inner Vancouver Metro.
* WHEN...Until 4 AM PST Saturday.
* IMPACTS...Deteriorating air quality may cause issues for people
with respiratory problems.
