Special Weather Statement
Issued by NWS Pendleton, OR

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WWUS86 KPDT 162039
SPSPDT

Special Weather Statement
National Weather Service Pendleton OR
139 PM PDT Sat Sep 16 2017

ORZ041-044-049-050-502-503-505>511-WAZ024-026>030-520-521-172030-
East Columbia River Gorge-Lower Columbia Basin of Oregon-
Grande Ronde Valley-Wallowa County-
Northern Blue Mountains of Oregon-
Southern Blue Mountains of Oregon-John Day Basin-Ochoco-
John Day Highlands-
Foothills of the Northern Blue Mountains of Oregon-
Foothills of the Southern Blue Mountains of Oregon-
East Slopes of the Oregon Cascades-North Central Oregon-
Central Oregon-Eastern Columbia River Gorge of Washington-
Kittitas Valley-Yakima Valley-Lower Columbia Basin of Washington-
Foothills of the Blue Mountains of Washington-
Northwest Blue Mountains-East Slopes of the Washington Cascades-
Simcoe Highlands-
Including the cities of Arlington, The Dalles, Boardman,
Hermiston, Ione, Cove, Elgin, La Grande, Union, Enterprise,
Joseph, Wallowa, Meacham, Tollgate, Long Creek, North Powder,
Ukiah, Dayville, John Day, Mitchell, Monument, Spray, Brothers,
Paulina, Prairie City, Seneca, Athena, Pendleton, Pilot Rock,
Heppner, Condon, Fossil, Camp Sherman, La Pine, Sisters,
Sunriver, Dufur, Maupin, Moro, Bend, Madras, Prineville, Redmond,
White Salmon, Ellensburg, Thorp, Naches, Sunnyside, Toppenish,
Yakima, Connell, Prosser, Tri-Cities, Dayton, Waitsburg,
Walla Walla, Ski Bluewood Resort, Appleton, Cle Elum, Cliffdell,
Goldendale, and Bickleton
139 PM PDT Sat Sep 16 2017

...MUCH COOLER, WETTER AND UNSETTLED WEATHER RETURNS NEXT WEEK...

A large trough of low pressure will move into the Pacific
Northwest next week bringing much cooler temperatures, several
rounds of rain and higher elevation snow starting Sunday night.

Periods of rain will begin late Sunday and continue at times
through much of the week. The highest precipitation totals will
be over the mountains, but the lower elevations will also see
periods of light rain. A stronger low pressure system is forecast
to move through the forecast area late Tuesday night into
Wednesday. This could bring a period of steadier precipitation
areawide, along with windy to perhaps very windy conditions.

Snow levels will be around 7500 feet Sunday night and are
expected to lower to between 5000 to 6000 feet by Monday and
remain near that level through the week. Expect winter conditions
on mountain roads above about 6000 feet, especially at night and
in the early morning hours.

Temperatures will be 10 to 15 degrees below normal through the
week. Daytime highs will be in the 50s and 60s in the lower
elevations, with 40s and 50s in the mountains. Overnight lows
will be in the 40s, except upper 20s and 30s in the mountains.

People planning travel or outdoor activities, especially in the
mountains should be prepared for theses changing conditions.

$$



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