* WHAT...South winds 25 to 35 mph with gusts up to 50 mph expected
for the base of the northern Blue Mountains of Oregon and
Washington.
* WHERE...In Oregon, Foothills of the Northern Blue Mountains of
Oregon. In Washington, Foothills of the Blue Mountains of
Washington.
* WHEN...From 10 PM Wednesday to 10 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 possible. Total snow accumulations of 1 to 5
inches except 12 to 18 inches over the mountains possible. Lowest
snow amounts in the valleys near Baker City and Richland.
* WHERE...In Idaho, Upper Weiser River. In Oregon, Baker County.
* WHEN...From Wednesday evening through Friday morning.
* IMPACTS...Roads, and especially bridges and overpasses, will
likely become slick and hazardous. Travel could be very difficult
to impossible. The hazardous conditions could impact the Thursday
morning and evening commutes.
...MODERATE TO HEAVY SNOW CHRISTMAS AFTERNOON THROUGH THURSDAY
ACROSS THE CASCADES...
.A winter system will move across the region during the afternoon
into evening on Christmas and bring widespread mountain snow to the
Cascades through Thursday. Snow levels will rise through Thursday,
with much of this activity tapering off or changing to rain by the
evening Thursday.
* WHAT...Wet snow expected for elevations above 4000 feet. Total
snow accumulations of 4 to 8 inches. Winds gusting as high as 45
mph.
* WHERE...East Slopes of the Oregon Cascades.
* WHEN...From 1 PM Wednesday to 10 PM PST Thursday.
* IMPACTS...Periods of moderate and heavy snow will combine with low
visibilities to create difficult driving conditions. Gusty winds
could bring down tree branches.
* ADDITIONAL DETAILS...Snow levels are expected to bounce between
4000-5000 feet, with the passes across the Cascades right around
4500 feet. If snow levels drop or remain lower, snow amounts will
increase notably across the passes.
Snowfall is expected through the next few days as a number of wet
systems move through the Pacific Northwest. These wet systems are
associated with warmer air which will cause snow levels to be
elevated to near pass level of the Cascades. While snow is expected,
uncertainty is high for snow accumulations greater than 10 inches.
* WHAT...Snow expected above 4500 feet. From 4500 feet to 5000 feet,
total snow accumulation up to 6 inches. Above 5000 feet, total
snow accumulations of 18 to 20 inches. Winds gusting as high as 45
mph.
* WHERE...South Washington Cascades and the Northern and Central
Cascades of Oregon.
* WHEN...From 1 PM Wednesday to 10 PM PST Thursday.
* IMPACTS...Travel could be very difficult to impossible. Gusty
winds could bring down tree branches and reduce visibility with
falling snow.
* ADDITIONAL DETAILS...Snow levels are hovering right around 4500 to
5000 feet which is the elevation of the passes within the
Cascades. Because of this, if snow levels drop below pass level,
snow accumulation will be greater. There is less than a 10% chance
of seeing greater than 12 inches of snow at pass level.
* WHAT...Snow expected. Total snow accumulations between 2 and 26
inches. Winds gusting as high as 70 mph.
* WHERE...The southern Oregon Cascades north of Highway 140
including Crater Lake National Park, highways 62, 138, and 51 at
Willamette Pass. Marble Mountains including Sawyer Bar Road near
Mount Etna, and the pass at Snowmans Hill Summit.
* WHEN...From Wednesday late afternoon through Friday morning.
* IMPACTS...Travel could be very difficult to impossible. The
hazardous conditions could impact the Wednesday evening and
Thursday morning commutes. Very strong winds could cause extensive
damage to trees and power lines.
* WHAT...Dangerously large breaking waves of 30 to 35 ft.
* WHERE...The beaches and shorelines of Curry, Coos, and Douglas
counties.
* WHEN...From 4 PM Wednesday to 4 PM PST Thursday.
* IMPACTS...Extremely large breaking waves will create very
hazardous conditions along beaches and area shorelines. Waves
will inundate beaches and surge into normally dry areas.
Infrastructure damage and significant beach erosion can be
expected.
* ADDITIONAL DETAILS...Hazardous surf and beach conditions are
likely to continue through much of the weekend, with improving
conditions possible on Sunday.
* View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr
* WHAT...Southwest winds 30 to 40 mph with gusts up to 65 mph
expected.
* WHERE...This includes the Summer Lake area and Highway 31, the
mountains across Lake County and eastern Klamath County, and Modoc
County.
* WHEN...From 10 PM Wednesday to 10 AM PST Thursday.
* IMPACTS...Damaging winds will blow down trees and power lines.
Widespread power outages are expected. Travel will be difficult,
especially for high profile vehicles.
* WHAT...South winds 25 to 35 mph with gusts up to 65 mph expected.
* WHERE...Eastern Curry County and Josephine County and Jackson
County.
* WHEN...From 1 PM Wednesday to 4 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...South winds 30 to 40 mph with gusts up to 70 mph possible.
* WHERE...Curry County Coast and South Central Oregon Coast,
including all beaches, capes and headlands from Reedsport to
Brookings, and exposed portions of Highway 101.
* WHEN...From 1 PM Wednesday to 4 AM PST Thursday.
* IMPACTS...Damaging winds will blow down trees and power lines.
Widespread power outages are expected. Travel will be difficult,
especially for high profile vehicles.
* WHAT...Dangerously large breaking waves of 30 to 35 ft.
* WHERE...The beaches and shorelines of Curry, Coos, and Douglas
counties.
* WHEN...From 4 PM Wednesday to 4 PM PST Thursday.
* IMPACTS...Extremely large breaking waves will create very
hazardous conditions along beaches and area shorelines. Waves
will inundate beaches and surge into normally dry areas.
Infrastructure damage and significant beach erosion can be
expected.
* ADDITIONAL DETAILS...Conditions are expected to slowly improve
this morning, but another round of dangerous surf conditions can
be expected late Wednesday (Christmas Day) through Thursday.
Hazardous surf and beach conditions are likely to continue
through much of the weekend, with improving conditions possible
on Sunday.
* View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr
* WHAT...South to southwest winds can still gust to around 40 mph
early this morning, but will ease through the day. For the High
Wind Watch, southwest winds 30 to 40 mph with gusts up to 70 mph
possible.
* WHERE...This includes the Summer Lake area and Highway 31, the
mountains across Lake County and eastern Klamath County, and Modoc
County.
* WHEN...From Wednesday evening through Thursday morning.
* IMPACTS...Damaging winds could blow down trees and power lines.
Widespread power outages are possible. Travel could be difficult,
especially for high profile vehicles.
* WHAT...South winds 30 to 40 mph with gusts up to 70 mph possible.
* WHERE...Curry County Coast and South Central Oregon Coast,
including all beaches, capes and headlands from Reedsport to
Brookings, and exposed portions of Highway 101.
* WHEN...From Wednesday afternoon through late Wednesday night.
* IMPACTS...Damaging winds could blow down trees and power lines.
Widespread power outages are possible. Travel could be difficult,
especially for high profile vehicles.
* WHAT...South to southeast winds 30 to 40 mph with gusts 50 to 60
mph expected for the base of the northern Blue Mountains of Oregon.
* WHERE...Foothills of the Northern Blue Mountains of Oregon.
* WHEN...Until 7 AM PST this morning.
* IMPACTS...Damaging winds will blow down trees and power lines.
Widespread power outages are expected. Travel will be difficult,
especially for high profile vehicles.
* ADDITIONAL DETAILS...Strong and damaging winds have been observed
along Interstate 84 from Pendleton to Cabbage Hill, as well as
Highway 11 from Pendleton to Milton-Freewater.
* WHAT...South winds 20 to 30 mph with gusts up to 45 mph.
* WHERE...Grande Ronde Valley.
* WHEN...Until 7 AM PST this morning.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
* WHAT...Large waves and hazardous surf conditions. Breakers up to
25 to 30 feet.
* WHERE...North and Central Coast of Oregon, and South
Washington Coast.
* WHEN...From 4 PM Wednesday to 10 PM PST Thursday.
* IMPACTS...Destructive waves may wash over beaches, jetties,
and other structures unexpectedly. People can be swept off
rocks and jetties and drown while observing high surf. Minor
beach erosion may damage coastal properties and buildings.
Higher than normal water run-up is expected on beaches and low-
lying shoreline.
* ADDITIONAL DETAILS...There is a high threat for sneaker waves.
* WHAT...Heavy wet snow possible above 4500 feet. Total snow
accumulations of 1 to 2 feet, with heaviest snowfall above 5500
feet. Winds could gust as high as 50 mph on higher exposed
terrain.
* WHERE...South Washington Cascades and the Northern and Central
Cascades of Oregon.
* WHEN...From late Wednesday afternoon through Friday morning.
* IMPACTS...Travel could be difficult at times, with snow-packed
roadways.
* ADDITIONAL DETAILS...Two rounds of higher intensity snowfall
will most likely impact the Cascades later this week. The first
round will be late Wednesday afternoon through Thursday morning.
A second storm system will be quick on the first storm system
heels, and bring another round of heavy snowfall Thursday night
into Friday. The Timberline Highway, US-20 over Santiam Pass
and Highway 58 over Willamette Pass will be the roadways most
heavily impacted by the snow.
* WHAT...Heavy snow possible. Total snow accumulations of 1 to 2
feet possible. Winds could gust as high as 65 mph.
* WHERE...The southern Oregon Cascades north of Highway 140
including Crater Lake National Park, Diamond Lake, Highways 62,
138, and 51 at Willamette Pass. In Siskiyou County, higher
elevations including Sawyers Bar Road near Mount Etna, and the
pass at Snowman Summit on Highway 89.
* WHEN...From Wednesday late afternoon through Friday morning.
* IMPACTS...Heavy snow will cause snow-covered, hazardous roads and
reduced visibility. Travel could be very difficult to impossible.
The hazardous conditions could impact the Wednesday evening and
Thursday morning commutes. Strong winds could cause some blowing
snow further reducing visibility and may cause damage to trees and
power lines.
* WHAT...South winds 15 to 30 mph, with gusts 45 to 60 mph possible.
* WHERE...Areas above 1000 feet across the North and Central Coast
Range Mountains of Oregon and Willapa Hills.
* WHEN...From Wednesday evening through Thursday morning.
* IMPACTS...Damaging winds could blow down trees and power lines.
Widespread power outages are possible. Travel could be difficult,
especially for high profile vehicles.
* WHAT...South to southwest winds 20 to 30 mph, with gusts up to 60
mph possible.
* WHERE...South Washington and North and Central Oregon Coast.
* WHEN...From Wednesday evening through Thursday morning.
* IMPACTS...Damaging winds could blow down trees and power lines.
Widespread power outages are possible. Travel could be difficult,
especially for high profile vehicles.
* WHAT...For the current High Surf Warning, dangerously large
breaking waves of 24 to 29 ft through early this morning. For
the next High Surf Warning, dangerously large breaking waves of
30 to 35 ft.
* WHERE...The beaches and shorelines of Curry, Coos, and Douglas
counties.
* WHEN...For the current High Surf Warning, until 7 AM PST this
morning. For the next High Surf Warning, from 4 PM Wednesday to
4 PM PST Thursday.
* IMPACTS...Extremely large breaking waves will create very
hazardous conditions along beaches and area shorelines. Waves
will inundate beaches and surge into normally dry areas.
Infrastructure damage and significant beach erosion can be
expected.
* ADDITIONAL DETAILS...Conditions are expected to slowly improve
this morning, but another round of dangerous surf conditions can
be expected late Wednesday (Christmas Day) through Thursday.
Hazardous surf and beach conditions are likely to continue
through much of the weekend, with improving conditions possible
on Sunday.
* View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr
