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wwus85 kpih 221018

special weather statement
national weather service pocatello id
418 am mdt thu oct 22 2020

lost river range-frank church wilderness-sawtooth/stanley basin-
sun valley region-big lost highlands/copper basin-
including the cities of borah peak, clayton, stanley, ketchum, 
sun valley, galena, and copper basin
418 am mdt thu oct 22 2020

...accumulating snow saturday...
a winter storm will shift southeast through montana saturday
resulting in accumulating snowfall for the central mountains
starting late friday night and continuing through saturday
evening. storm total snowfall of 2 to 5 inches is expected across
the sawtooth, white cloud, and salmon river ranges with upwards 
of an inch of accumulation in the stanley basin. individuals 
having recreation or hunting plans in the central mountains this 
weekend should be prepared for winter-like conditions.

wwus86 kpqr 212041

special weather statement
national weather service portland or
141 pm pdt wed oct 21 2020

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. 

wwus86 kpqr 212041

northern oregon cascades-cascades in lane county-
south washington cascades-
including the cities of government camp, detroit, santiam pass, 
mckenzie pass, mckenzie bridge, oakridge, willamette pass, 
coldwater ridge visitors center, mount st. helens, 
and wind river valley
141 pm pdt wed oct 21 2020

...cold temperatures and snow on the way...

clearing and cooler tonight, with frost as temperatures lower 
into the upper 20s.

a system will move into the area on friday, pushing cold, moist 
air into the area. snow levels will drop down to around 1500 feet,
with some accumulations. at the passes, several inches of snow
are possible friday night through saturday morning.

once that system passes, skies will clear and temperatures will
drop. expect lows in the middle teens to lower 20s. this will 
result in widespread frost and the possibility for a re-freeze of 
any snow that might have melted with daytime temperatures.


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