* WHAT...Snow. Additional snow accumulations of 5 to 9 inches above
4500 feet and 2 to 4 inches between 4000 and 4500 feet.
* WHERE...East Slopes of the Oregon Cascades.
* WHEN...Until 7 PM PST Friday.
* IMPACTS...Travel could be difficult due to periods of moderate to
heavy snow. Gusty winds could bring down tree branches.
* WHAT...Southwest winds 30 to 40 mph with gusts up to 70 mph
expected.
* WHERE...Lake County and eastern Klamath County, and Modoc County,
including the Summer Lake area and Highway 31, the mountains
across Lake County and eastern Klamath County, and Modoc County.
* WHEN...From midnight tonight to 10 AM PST Friday.
* 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...Southwest winds 20 to 35 mph with gusts up to 50 mph
expected.
* WHERE...Klamath Basin, including Klamath Falls and Highway 140.
* WHEN...From midnight tonight to 10 AM PST Friday.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
* WHAT...South winds 20 to 30 mph with gusts up to 45 mph expected.
* WHERE...Jackson County, including the southern Rogue Valley from
southern portions of Medford southward, including Phoenix, Talent
and Ashland.
* WHEN...From 9 PM this evening to 3 AM PST Friday.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
* WHAT...South winds 20 to 30 mph with gusts up to 50 mph expected.
* WHERE...Central Douglas County and Eastern Curry County and
Josephine County, winds will be strongest over the coastal
mountains and exposed areas in eastern Curry and Josephine
Counties as well as western Douglas County.
* WHEN...Until 2 AM PST Friday.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
* WHAT...South winds 35 to 45 mph with gusts up to 70 mph.
* WHERE...Curry County Coast, all beaches, capes and headlands from
Port Orford southward to Brookings and Highway 101.
* WHEN...Until 2 AM PST Friday.
* 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 35 to 45 mph with gusts up to 70 mph.
* WHERE...South Central Oregon Coast all beaches, capes and
headlands from Bandon south to Port Orford and Highway 101.
* WHEN...Until 2 AM PST Friday.
* IMPACTS...Damaging winds will blow down trees and power lines.
Widespread power outages are expected. Travel will be difficult,
especially for high profile vehicles.
...The National Weather Service in Medford OR has issued a Flood
Warning for the following rivers in Oregon...
Coquille River at Coquille affecting Coos County.
For the Coquille River...including Coquille...Moderate flooding is
forecast.
* WHAT...Moderate flooding is forecast.
* WHERE...Coquille River at Coquille.
* WHEN...From late tonight to early Tuesday afternoon.
* IMPACTS...At 21.0 feet, The Coquille River is at flood stage.
Expect flooding of farmland and low-lying areas throughout the
flood plain along the Coquille River.
At 23.0 feet, Some farm buildings may be threatened and roads
covered in low areas by rising water. Expect widespread flooding
throughout the Coquille River floodplain.
* ADDITIONAL DETAILS...
- At 3:45 PM PST Thursday the stage was 19.7 feet.
- Bankfull stage is 20.0 feet.
- Forecast...The river is near bankfull and will rise to flood
stage near 21.0 feet late tonight around 3 to 4 am PST and
peak at 21.3 feet by around 11 am PST Friday. It is forecast
to fall below flood stage by 10 pm PST Friday, then remain
between 20 and 21 feet before rising above flood stage again
by around noon PST on Sunday. The river is forecast to peak
with a maximum value of 23.3 feet Monday morning, then
gradually fall to below flood stage again sometime Tuesday.
- Flood stage is 21.0 feet.
- Flood History...This crest compares to a previous crest of
23.2 feet on 12/24/2015.
- http://www.weather.gov/safety/flood
* WHAT...Dangerously large breaking waves of 25 to 30 feet.
* WHERE...South Central Oregon Coast and Curry County Coast.
* WHEN...Until 7 AM PST Sunday.
* 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
especially during high tides. Infrastructure damage and
significant beach erosion can be expected.
* ADDITIONAL DETAILS...Surf conditions will be occasionally
worsened by high winds and seas as fronts pass each day through
Sunday.
* View the hazard area in detail at
https://www.wrh.noaa.gov/map/?wfo=mfr
* WHAT...Wet snow expected above 4500 feet. Total snow accumulations
3 to 6 inches.
* WHERE...Ochoco-John Day Highlands.
* WHEN...From 1 AM Friday to 4 AM PST Saturday.
* IMPACTS...Periods of moderate and heavy snow will combine with low
visibilities to create difficult driving conditions.
* WHAT...Wet snow expected above 4500 feet. Total snow accumulations
6 to 12 inches.
* WHERE...In Oregon, Northern Blue Mountains of Oregon. In
Washington, Northwest Blue Mountains.
* WHEN...From 1 AM Friday to 4 AM PST Saturday.
* IMPACTS...Periods of moderate and heavy snow will combine with low
visibilities to create difficult driving conditions.
* WHAT...Wet snow above 4500 feet. Snow accumulations 5 to 9 inches.
* WHERE...East Slopes of the Oregon Cascades.
* WHEN...Until 7 PM PST Friday.
* 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...Rising snow levels over late tonight into
early morning could lead to a period of rain and snow mix or rain
before returning to snow tomorrow when snow levels drop and
conditions cool. This may also lead to icy conditions tomorrow.
* WHAT...Snow expected above 4000 feet. From 4000 feet to 5000 feet,
total snow accumulations appear most likely to range between 3 and
12 inches, with the lowest amounts near 4000 feet. Above 5000-5500
feet, total snow accumulations of 12 to 18 inches.
* WHERE...South Washington Cascades and the Northern and Central
Cascades of Oregon.
* WHEN...Until 7 PM PST Friday.
* IMPACTS...Travel could be difficult at times. Be prepared for snow
covered roads and slick surfaces.
* ADDITIONAL DETAILS...An active storm track will continue to
produce accumulating snow across the passes in the Cascades into
this weekend. However, there are two time periods when snow levels
appear likely to rise to 5000-5500 feet and be far enough above
the passes to temporarily limit snow accumulations. The first
window where snow levels will rise above the passes appears most
likely to occur between 3 AM Friday and 9 AM Friday. Another round
of warmer air aloft will most likely push snow levels above the
passes Friday night as well.
* WHAT...Snow expected. Total snow accumulations between 12 to 20
inches, with up to 30 inches near Crater Lake and Mount Shasta Ski
area. 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...Until 10 AM PST Friday.
* IMPACTS...Travel could be very difficult to impossible. The
hazardous conditions could impact this evening and the Thursday
morning commutes. Very strong winds could cause extensive damage
to trees and power lines.
* WHAT...Snow. Total snow accumulations between 3 to 8 inches with
higher amounts of 8 to 14 inches above 5000 feet elevation. Winds
gusting as high as 35 mph in the valleys and 60 mph over the
mountains.
* WHERE...Northern and Eastern Klamath County and Western Lake
County County. This includes portions of Highway 97 north of
Chiloquin and Highway 140 between Dairy and Lakeview.
* WHEN...Until 4 AM PST Friday.
* IMPACTS...Travel could be very difficult. The hazardous conditions
could impact the Thursday evening commute. Strong winds could
cause extensive damage to trees and power lines.
* ADDITIONAL DETAILS...Snow levels will fluctuate between 4000 and
5000 feet. Periods of moderate snow are likely tonight and
Thursday morning and again Thursday evening through early Friday
morning.
ESFPQR
A series of systems will continue the wet weather pattern of late
across northwest Oregon through the weekend. This will lead to rises
on rivers and creeks through at least Sunday, December 29th. There
is currently a 30-50% probability that several rivers in northwest
Oregon including the Siuslaw River, the Mohawk River, the Marys
Rivers, the Luckiamute River and the Pudding River will reach minor
flood stage over the next week.
Heavy rainfall may also lead to ponding of water, general lowland
flooding and localized urban flooding, especially in low lying areas
or other areas with poor drainage. Heavy rainfall will also increase
the potential for landslides and debris flows in areas of steep
terrain.
The exact track of these upcoming storms will influence rainfall
amounts, and thus the potential for flooding. There is a 10% chance
that the southern Willamette Valley receives 2-3" of rain and the
adjacent higher terrain of the Coast Range and Cascades receive 3-5"
of rain late Saturday into early Sunday. This scenario would likely
produce more widespread flooding issues. Shifts in storm track
can change the current outlook, so be sure to monitor
weather.gov/portland for the latest weather updates, as well as any
watches, warnings, or advisories that may be issued. To view the
latest river forecasts, visit water.noaa.gov/wfo/pqr.
* 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...Until 4 PM PST Friday.
* 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...Sneaker waves may be possible at times.
* WHAT...Southwest winds 30 to 40 mph with gusts of 50 to 70 mph
possible.
* WHERE...Lake County and eastern Klamath County, Central Siskiyou
County, Northeast Siskiyou and Northwest Modoc Counties, Modoc
County, Curry County Coast, Central Douglas County, Eastern Curry
County and Josephine County, and Jackson County.
* WHEN...From 10 PM this evening to 10 AM PST Friday.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
The following message is transmitted at the request of the
Wallowa Avalanche Center.
...The Wallowa Avalanche Center in La Grande OR has issued a
BACKCOUNTRY AVALANCHE WARNING...
* WHAT...Dangerous avalanche conditions exist today in the winter
recreation areas out of Halfway, Oregon. Rapid snow loading
combined with strong wind will create conditions likely to
produce natural and human avalanches.
* WHERE...The Southern Wallowas, primarily riding areas near and
around Cornucopia, Norway Basin, Fish Lake, and Clear Creek Snopark.
* WHEN...in effect from Thu 07:00AM PST until Fri 07:00AM PST.
* IMPACTS...Recent heavy snow combined with wind will likely
create widespread areas of unstable snow.
The following message is transmitted at the request of the
Wallowa Avalanche Center.
...The Wallowa Avalanche Center in La Grande OR has issued a
BACKCOUNTRY AVALANCHE WARNING...
* WHAT...Dangerous avalanche conditions exist today in the winter
recreation areas out of Halfway, Oregon. Rapid snow loading
combined with strong wind will create conditions likely to
produce natural and human avalanches.
* WHERE...The Southern Wallowas, primarily riding areas near and
around Cornucopia, Norway Basin, Fish Lake, and Clear Creek .
* WHEN...in effect from Thu 07:00AM PST until Fri 07:00AM PST.
* IMPACTS...Recent heavy snow combined wtih wind will likely
create widespread areas of unstable snow.
