* WHAT...Snow expected. Total snow accumulations between 6 and 11
inches at pass levels. Areas above 5000 ft could see snow
accumulations up to 18 inches. Winds gusting as high as 35 mph.
* WHERE...Upper Slopes of the Eastern Washington Cascades Crest.
* WHEN...From 5 PM this afternoon to 11 PM PDT Thursday.
* IMPACTS...Periods of moderate and heavy snow and breezy conditions
will combine with low visibilities to create difficult driving
conditions.
A series of winter systems move in through the end of the week
bringing heavy snow to the Cascades. There are three different
disturbances, but will blend into one overall impactful scenario.
Snow levels will begin to rise on Friday.
* WHAT...Heavy snow expected. Total snow accumulations up to 15
inches. Accumulations up to 20 inches above 5000 feet. Winds
gusting as high as 35 mph.
* WHERE...South Washington Cascades and the Northern and Central
Cascades of Oregon.
* WHEN...From 5 PM this afternoon to 11 PM PDT Thursday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous.
* ADDITIONAL DETAILS...The bulk of the heaviest snow will fall
between 1 AM through 11 AM Thursday.
* WHAT...Snow expected. Total snow accumulations up to 10 to 12
inches. Up to 17 inches above 5500 feet. Winds gusting as high as
35 mph.
* WHERE...South Washington Cascades and the Northern and Central
Cascades of Oregon.
* WHEN...From 5 PM this afternoon to 5 PM PDT Thursday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous.
* ADDITIONAL DETAILS...There is around a 20% chance that snow
accumulation would exceed 12 inches at elevations above 4000 feet.
For this scenario to occur, colder air would need to be present
than what is forecast. This first system will be closely followed
by a second frontal system so there may be minimal break between
them.
* WHAT...Snow expected. Total snow accumulations of 1 to 4 inches
above 3500 feet and 4 to 10 inches above 4500 feet. Winds gusting
as high as 45 mph.
* WHERE...In Oregon, Northern Blue Mountains of Oregon. In
Washington, Northwest Blue Mountains.
* WHEN...From 5 PM this afternoon to 11 PM PDT Thursday.
* IMPACTS...Travel could be difficult due to periods of moderate to
heavy snow. Gusty winds could bring down tree branches.
* WHAT...South winds 20 to 35 mph with gusts of 40 to 55 mph
expected.
* WHERE...Foothills of the Blue Mountains of Washington.
* WHEN...From 5 PM this afternoon to 5 AM PDT Thursday.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
* ADDITIONAL DETAILS...Strongest winds are expected along the base
and slopes of the northern Blue Mountains. South to southeast
winds today will become southwest winds late evening into Thursday
morning.
* WHAT...Snow expected Above 4500 feet. Total snow accumulations 5
to 8 inches. Winds gusting as high as 45 mph.
* WHERE...In Oregon, Northern Blue Mountains of Oregon. In
Washington, Northwest Blue Mountains.
* WHEN...From 5 PM Wednesday to 11 PM PDT Thursday.
* IMPACTS...Travel could be difficult due to periods of moderate to
heavy snow. Gusty winds could bring down tree branches.
* WHAT...Snow expected Above 4500 feet. Total snow accumulations 5
to 8 inches. Winds gusting as high as 45 mph.
* WHERE...In Oregon, Northern Blue Mountains of Oregon. In
Washington, Northwest Blue Mountains.
* WHEN...From 5 PM Wednesday to 11 PM PDT Thursday.
* IMPACTS...Travel could be difficult due to periods of moderate to
heavy snow. Gusty winds could bring down tree branches.
* WHAT...Snow expected Above 4500 feet. Total snow accumulations 5
to 8 inches. Winds gusting as high as 45 mph.
* WHERE...In Oregon, Northern Blue Mountains of Oregon. In
Washington, Northwest Blue Mountains.
* WHEN...From 5 PM Wednesday to 11 PM PDT Thursday.
* IMPACTS...Travel could be difficult due to periods of moderate to
heavy snow. Gusty winds could bring down tree branches.
Two back-to-back winter systems will move over the region through
Saturday morning. The first will arrive late Wednesday through
Thursday. This system will bring snow to the Cascades and breezy
winds. The second system will arrive on Friday. This frontal passage
is warmer but will continue to be evaluated in regards to future
advisories or warnings.
* WHAT...Snow expected. Total snow accumulations up to 11 inches.
* WHERE...South Washington Cascades.
* WHEN...From 5 PM Wednesday to 5 PM PDT Thursday.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous.
* ADDITIONAL DETAILS...There is around a 20% chance that snow
accumulation would exceed 12 inches at elevations above 4000 feet.
For this scenario to occur, colder air would need to be present
than what is forecast. This first system will be closely followed
by a second frontal system so there may be minimal break between
them.
* WHAT...Snow. Additional snow accumulations between 2 and 4 inches.
* WHERE...In Oregon, Northern Blue Mountains of Oregon. In
Washington, Northwest Blue Mountains.
* WHEN...Until 2 PM PDT this afternoon.
* IMPACTS...Plan on slippery road conditions.
* WHAT...Heavy snow possible. Total snow accumulations of up to 20
inches to 4500 feet, and up to 35 inches at higher elevations
possible.
* WHERE...South Washington Cascades.
* WHEN...From Wednesday afternoon through Friday evening.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous.
* ADDITIONAL DETAILS...There is around a 60-80% chance for 12 inches
or more of snow late Wednesday through Friday as two frontal
systems affect the area.
* WHAT...Snow. Additional snow accumulations up to 6 inches.
* WHERE...In Oregon, Northern Blue Mountains of Oregon. In
Washington, Northwest Blue Mountains.
* WHEN...Until 2 PM PDT Tuesday.
* IMPACTS...Travel could be difficult due to periods of moderate to
heavy snow.
* WHAT...Snow. Additional snow accumulations up to 8 inches.
* WHERE...In Oregon, Northern Blue Mountains of Oregon. In
Washington, Northwest Blue Mountains.
* WHEN...Until 2 PM PDT Tuesday.
* IMPACTS...Travel could be difficult due to periods of moderate to
heavy snow.
A series of winter systems will move over the area through Friday.
Each system will bring with it heavy precipitation. The first front
will move inland tonight into Tuesday bringing advisory level snow.
The second will arrive late Wednesday through Thursday. This frontal
system will be quickly followed by a second and more robust front on
Friday. There will be a short break between the second and third
front, but may not be as noticeable.
* WHAT...Heavy snow possible. Total snow accumulations of up to 20
inches to 4500 feet, and up to 35 inches along higher peaks
possible.
* WHERE...South Washington Cascades.
* WHEN...From Wednesday afternoon through Friday evening.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous.
* ADDITIONAL DETAILS...For the Winter Storm Warning, there is around
a 60-80% chance for heavy warning level snow (12 inches or more)
from Thursday through Friday as a combination of two fronts move
over the area.
* WHAT...Snow expected. Total snow accumulations between 6 and 10
inches.
* WHERE...In Oregon, Northern Blue Mountains of Oregon. In
Washington, Northwest Blue Mountains.
* WHEN...From 8 AM this morning to 2 PM PDT Tuesday.
* IMPACTS...Travel could be difficult due to periods of moderate to
heavy snow.
* WHAT...Snow expected. Total snow accumulations 4 to 6 inches above
4000 feet. Below 4000 feet accumulations will generally be less
than an inch. Winds gusting as high as 35 mph.
* WHERE...Cloverland Road and Mountain Road.
* WHEN...From 8 AM this morning to 2 PM PDT Tuesday.
* IMPACTS...Plan on slippery road conditions.
* WHAT...Heavy snow above 4500 feet. Additional snow accumulations
of 2 to 4 inches.
* WHERE...In Oregon, Northern Blue Mountains of Oregon. In
Washington, Northwest Blue Mountains.
* WHEN...Until 11 PM PDT this evening.
* IMPACTS...The strong winds and weight of snow on tree limbs may
down power lines and could cause sporadic power outages. Plan on
slippery road conditions.
* ADDITIONAL DETAILS...Concerns will primarily be north of the I-84
corridor, primarily along Highway 204 and north.
* WHAT...Sneaker waves possible.
* WHERE...North and Central Coast of Oregon, and South
Washington Coast.
* WHEN...Until midnight PDT tonight.
* 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.
* ADDITIONAL DETAILS...Keep children and pets away from the surf
zone. Keep off of jetties, rocks and logs near the surf zone.
If you see someone swept into the sea do not swim in after
them. Call 911 and keep an eye on them until help arrives.
A weather system continues to push through the region producing
moderate to heavy snow at times. While the bulk of snow will come to
an end in the next few hours, another band of showery precipitation
is expected overnight. This snow may impact the morning commute.
Heaviest snow above 1000 feet in elevation.
* WHAT...Heavy snow. Additional snow accumulations up to 2 inches.
* WHERE...South Washington Cascades.
* WHEN...Until 11 PM PDT this evening.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous.
* WHAT...Heavy snow above 4500 feet. Additional snow accumulations
of 2 to 4 inches.
* WHERE...In Oregon, Northern Blue Mountains of Oregon. In
Washington, Northwest Blue Mountains.
* WHEN...Until 11 PM PDT this evening.
* IMPACTS...The strong winds and weight of snow on tree limbs may
down power lines and could cause sporadic power outages. Plan on
slippery road conditions.
