Monthly Archives: January 2021

WINTER WEATHER ADVISORY

 

COAST RANGE OF NORTHWEST OREGON-
INCLUDING THE CITIES OF VERNONIA, JEWELL, SUNSET SUMMIT,
LEES CAMP, AND TRASK
426 AM PST TUE JAN 26 2021

…WINTER WEATHER ADVISORY IN EFFECT FROM 1 PM THIS AFTERNOON TO
4 AM PST WEDNESDAY ABOVE 500 FEET…

* WHAT…SNOW EXPECTED. TOTAL SNOW ACCUMULATIONS OF 2 TO 8 INCHES
BY LATE TUESDAY NIGHT. HIGHEST AMOUNTS ABOVE 1000 FEET.

* WHERE…COAST RANGE OF NORTHWEST OREGON.

* WHEN…FROM 1 PM THIS AFTERNOON TO 4 AM PST WEDNESDAY.

* IMPACTS…ROADWAYS, SUCH AS STATE HIGHWAYS 26 AND 6 AT PASS
LEVEL, MAY BE SNOW OR ICE COVERED.

* ADDITIONAL DETAILS…THE HEAVIEST PRECIPITATION IS EXPECTED FROM
EARLY EVENING THROUGH MIDNIGHT. EXPECT AREAS OF 1 TO 2 INCH
ACCUMULATIONS BELOW 500 FEET IN THE NOTORIOUS COLDER LOCATIONS
SUCH AS STALEYS JUNCTION AND TIMBER JUNCTION ALONG HIGHWAY 26.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

CONSIDER ALTERNATE ROUTES, ESPECIALLY IF TRAVELING OVER THE COAST
RANGE PASSES.

THE LATEST ROAD CONDITIONS FOR THE STATE YOU ARE CALLING FROM CAN
BE OBTAINED BY CALLING 5 1 1.

SPECIAL WEATHER STATEMENT

Special Weather Statement
National Weather Service Portland OR
956 PM PST Mon Jan 25 2021

North Oregon Coast-Central Oregon Coast-
Coast Range of Northwest Oregon-
Central Coast Range of Western Oregon-Lower Columbia-
Greater Portland Metro Area-Central Willamette Valley-
South Willamette Valley-Northern Oregon Cascade Foothills-
Northern Oregon Cascades-Cascade Foothills in Lane County-
Cascades in Lane County-Upper Hood River Valley-
Western Columbia River Gorge-Central Columbia River Gorge-
South Washington Cascades-Willapa Hills-South Washington Coast-I-
5 Corridor in Cowlitz County-Greater Vancouver Area-
South Washington Cascade Foothills-
Including the cities of Astoria, Cannon Beach, Tillamook,
Netarts, Pacific City, Lincoln City, Newport, Cape Foulweather,
Yachats, Florence, Vernonia, Jewell, Sunset Summit, Lees Camp,
Trask, Grande Ronde, Burnt Woods, Tidewater, Swisshome, Veneta,
St. Helens, Clatskanie, Hillsboro, Portland, Wilsonville,
Oregon City, Gresham, Troutdale, Salem, McMinnville, Woodburn,
Stayton, Dallas, Eugene, Springfield, Corvallis, Albany, Lebanon,
Sandy, Estacada, Silver Falls State Park, Sweet Home,
Government Camp, Detroit, Santiam Pass, Vida, Jasper, Lowell,
Cottage Grove, McKenzie Pass, McKenzie Bridge, Oakridge,
Willamette Pass, Parkdale, Odell, Corbett, Rooster Rock,
Multnomah Falls, Cascade Locks, Hood River,
Coldwater Ridge Visitors Center, Mount St. Helens,
Wind River Valley, Willapa, Frances, Elk Mountain, Ryderwood,
Raymond, Long Beach, Ocean Park, Naselle, Cathlamet,
Cape Disappointment, Longview, Kelso, Castle Rock, Vancouver,
Battle Ground, Ridgefield, Washougal, Yacolt, Amboy, Toutle,
Ariel, Lake Merwin, Yale Lake, Cougar, North Bonneville,
Stevenson, Carson, and Underwood
956 PM PST Mon Jan 25 2021

…CHANCE FOR LOW ELEVATION SNOW TUESDAY AFTERNOON AND EVENING…

A weakening frontal system will move across western Oregon and
southwest Washington Tuesday afternoon and evening. This front
will spread a widespread area of precipitation across most of the
area for a few hours beginning early afternoon Tuesday along the
coast, and spreading to areas farther east into the Cascades by
Tuesday evening.

With this system, there is a chance for snow at elevations below
500 ft in the Willamette Valley north of Salem, including the
greater Portland/Vancouver metro area beginning sometime mid to
late afternoon on Tuesday. Confidence is moderate to high that
areas in the Portland/Vancouver Metro will see a 1-3 hour period
of light to perhaps moderate snow. However, confidence is lower
in any appreciable accumulation amounts across the northern
Willamette Valley. Within the northern Willamette Valley and the
greater Portland/Vancouver metro area, the highest risk of
accumulating snow, perhaps up to an inch is expected in higher
elevations of the west hills, and the eastern suburbs east of
I-205, and also in areas of Clark County to the north and east of
Vancouver proper. These locations at elevations of 500-700 feet
and higher could see a slushy inch or two of accumulation. In
general, snow accumulation on roadways is expected to be minimal
to none, but bridges, overpasses, ramps, and other elevated or
exposed road surfaces are the locations most likely to see
accumulation, and possibly some local slick spots. Any snow in low
elevations below 500 feet should taper off to flurries or change
back to very light rain by late evening Tuesday.

Locations in the Coast Range and Cascades Foothills above 500 feet
could see 2 to 5 inches of accumulation. Higher elevations above
1200-1500 feet in the Coast Range and Cascades will likely see
even higher snow accumulations from 5 to 8 inches. With a general
1 to 4 inches of snow expected in the Columbia River Gorge and
Hood River Valley.

Anyone with travel plans Tuesday afternoon and evening should be
prepared for the possibility of winter driving conditions at low
elevations, with winter driving conditions a virtual certainty in
the mountains above 500-1000 feet elevation, and in the Columbia
River Gorge.

For the most up-to-date forecast visit www.weather.gov/portland
and for current road conditions, call 5-1-1.|