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Frost Advisory

URGENT - WEATHER MESSAGE
National Weather Service Portland OR
408 PM PDT Wed Oct 21 2020

ORZ003>005-007-008-010-012-WAZ020-022-040-221600-
/O.NEW.KPQR.FR.Y.0001.201022T0900Z-201022T1600Z/
Coast Range of Northwest Oregon-
Central Coast Range of Western Oregon-Lower Columbia-
Central Willamette Valley-South Willamette Valley-
Northern Oregon Cascade Foothills-
Cascade Foothills in Lane County-Willapa Hills-I-
5 Corridor in Cowlitz County-South Washington Cascade Foothills-
Including the cities of Vernonia, Jewell, Sunset Summit,
Lees Camp, Trask, Grande Ronde, Burnt Woods, Tidewater,
Swisshome, Veneta, St. Helens, Clatskanie, Salem, McMinnville,
Woodburn, Stayton, Dallas, Eugene, Springfield, Corvallis,
Albany, Lebanon, Sandy, Estacada, Silver Falls State Park,
Sweet Home, Vida, Jasper, Lowell, Cottage Grove, Willapa,
Frances, Ryderwood, Longview, Kelso, Castle Rock, Toutle, Ariel,
Lake Merwin, Yale Lake, and Cougar
408 PM PDT Wed Oct 21 2020

...FROST ADVISORY IN EFFECT FROM 2 AM TO 9 AM PDT THURSDAY...


* WHAT...Areas of frost with low temperatures of 32-37F.

* WHERE...In Washington, Willapa Hills, I-5 Corridor in Cowlitz
  County and South Washington Cascade Foothills. In Oregon,
  Coast Range of Northwest Oregon, Central Coast Range of
  Western Oregon, Lower Columbia, Central Willamette Valley,
  South Willamette Valley, Northern Oregon Cascade Foothills and
  Cascade Foothills in Lane County.

* WHEN...From 2 AM to 9 AM PDT Thursday.

* IMPACTS...Near freezing to freezing temperatures could kill
  sensitive outdoor vegetation if left uncovered.

* ADDITIONAL DETAILS...Areas of frost are most likely to develop
  in the typically coldest valley locations across northwest
  Oregon and southwest Washington. Some of these locations include
  Vernonia, Sheridan, Eugene, Silverton, Sandy, Brightwood, Molalla,
  Colton, Sweet Home, Mill City, Harrisburg, Turner, Aumsville
  and Albany.



PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take steps now to protect tender plants from the cold.

&&

$$



Special Weather Statement

Special Weather Statement
National Weather Service Portland OR
141 PM PDT Wed Oct 21 2020

ORZ001>008-010-012-014>016-WAZ020>022-039-040-045-046-222245-
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-
Cascade Foothills in Lane County-Upper Hood River Valley-
Western Columbia River Gorge-Central Columbia River Gorge-
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, Vida,
Jasper, Lowell, Cottage Grove, Parkdale, Odell, Corbett,
Rooster Rock, Multnomah Falls, Cascade Locks, Hood River,
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
141 PM PDT Wed Oct 21 2020

...FROSTY AND FREEZING CONDITIONS EXPECTED THIS WEEKEND...

Northwest Oregon and southwest Washington will see cool
temperatures tonight, with overnight lows into the lower to middle
30s. This will be cold enough to support patchy frost developing
across the interior lowlands.

A system will push even colder air into the area late Friday
night into Saturday, which will bring rain to lowland areas. Snow
levels will lower to around 1500 feet, with minor accumulations
above that point. As this system passes, skies will clear later
Saturday. Expect freezing temperatures this weekend, with
overnight temperatures from the upper 20s to middle 30s across
lower elevations. This will result in widespread frost, Saturday
night into Sunday morning, and again Sunday night into Monday
morning across much of northwest Oregon and southwest Washington.

Now is a good time to pick your remaining vegetables and to cover
other frost sensitive plants. It is also a good time to winterize
your outdoor pipes and hoses for the upcoming winter.


$$



U.S. Dept. of Commerce
NOAA National Weather Service
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Silver Spring, MD 20910
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