Montana

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By Brett Rathbun – AccuWeather

Rain, snow and cold air will return to the Northwestern states into Thanksgiving.

A storm system will dive southward along the West Coast into Tuesday before tracking eastward across the Rockies into Thanksgiving Day.

The strength and track of this storm system will determine which locations receive the heaviest snowfall on the cold side of this system.

The amount of moisture available with this system will be much less than the previous storms this month across the Pacific Northwest. While much of the lower elevations will deal with periods of rain through Tuesday, the threat for flash flooding will be low.

Much of the precipitation along the Interstate 5 corridor from Seattle to Portland, Oregon, will be in the form of rain on Tuesday.

A steady snow will blanket the Oregon Cascades. Significant snowfall will also occur across the Bitterroot Mountains of Idaho and western Montana as well as the Sierra Nevada.

Continue reading at AccuWeather: Cold Storm to Bring White Thanksgiving to Portions of Western US

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A powerful storm will continue to kick up hurricane-force winds across parts of the Rockies through Monday, threatening to cause damage, power outages and travel headaches.

Winds gusted to 115 mph at Logan Pass, Mont., on Saturday afternoon and 90 mph at Sedge Ridge, Wash., on Saturday morning.

Additional hurricane-force winds will be measured across the Rockies and not just in the highest elevations.

Such winds are in store for places to the lee of the Rockies from Montana to Colorado. This includes Cut Bank, Mont., and Cheyenne, Wyo.

Sunday night through Monday is when the strongest winds will howl.

The intense winds threaten to cause damage, power outages and travel problems for both motorists and airline passengers.

An emergency manager reported that 12 power poles were knocked down by strong winds near Ennis, Mont., on Saturday. Strong winds also downed a 26-inch diameter Grand Fir near St. Maries, Idaho. The tree landed on the trained spotter’s home.

RELATED: Northwest Interactive Radar Latest Snow, Wind Watches, Warnings AccuWeather.com Travel Center

While potentially causing flight delays, the winds will make driving difficult on stretches of Interstates 15, 25, 90 and 94.

High-profile vehicles are at greatest risk of being overturned by the powerful winds, but even drivers of smaller vehicles will feel the winds tug at their cars and trucks.

AccuWeather.com Meteorologist Mike Doll is especially concerned for hazardous driving conditions through passes and roads that are orientated west to east or southwest to northeast.

The strongest winds will avoid the metro area of Denver, but gusty winds still threaten to interfere with passing and kicking plays during the NFL playoff game between the Denver Broncos and the San Diego Chargers on Sunday afternoon.

Unlike the games in Seattle and Foxboro on Saturday, rain will avoid Denver on Sunday afternoon.

Snow will also be confined to the mountains. Travel will become extremely difficult, if not impossible, as the snow combines with the fierce winds to create blizzard conditions. The threat remains elevated for avalanches to occur.

While still windy for this Sunday, the strongest winds have departed Seattle, Portland and the rest of the Northwest. Rain and mountain snow continues to stream over western Washington and Oregon, keeping travel treacherous through I-90’s Snoqualmie Pass.

Monday through Tuesday, calmer weather will return to Oregon and Washington. On Monday, more of the northern High Plains will join the Rockies in enduring the potentially damaging winds.

More at AccuWeather: Hurricane-Force Winds Whipping the Rockies

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A powerful storm will continue to kick up hurricane-force winds across parts of the Northwest and Rockies this weekend, threatening to cause damage, power outages and travel headaches.

Winds Saturday morning gusted to 102 mph on the peak of Crystal Mountain, Wash., and 109 mph at Kenosha Pass, Colo., according to AccuWeather.com Enterprise Solutions Meteorologist, Cory Mottice.

Additional hurricane-force winds will be measured throughout the Northwest and Rockies and not just in the highest elevations.

Such winds are blasting the coast, as well as places to the lee of the Rockies from Montana to Colorado. This includes Cut Bank, Mont., and Cheyenne, Wyo.

Even the lower elevations of Seattle and Spokane, Wash., Portland and Pendleton, Ore., and Denver, Colo., will experience wind gusts to or past 55 mph.

The Northwest will continue to experience its strongest winds of the weekend this Saturday. For Montana, Wyoming and Colorado, the strongest winds will occur on Sunday.

RELATED: Northwest Interactive Radar Latest Snow, Wind Watches, Warnings AccuWeather.com Travel Center

The howling winds threaten to cause damage, power outages and travel problems for both motorists and airline passengers.

Seattle City Light reported that more than 28,000 customers were without power early Saturday morning. The good news is that crews were able to restore power to all but 8,000 of those customers in three hours.

While potentially causing flight delays, the winds will make driving difficult on stretches of Interstates 5, 15, 25, 84 and 90.

High-profile vehicles are at greatest risk of being overturned by the powerful winds, but even drivers of smaller vehicles will feel the winds tug at their cars and trucks.

AccuWeather.com Meteorologist Mike Doll is especially concerned for hazardous driving conditions through passes and roads that are orientated west to east or southwest to northeast.

Winds also threaten to interfere with passing and kicking plays during the NFL playoff games in Seattle Saturday afternoon and Denver Sunday afternoon.

In addition to the wind, players will be dealing with the soaking rain that is also accompanying the wind in Seattle and along the rest of the Northwest’s coast and I-5 corridor.

Large waves will also continue to pound the coastline, while the avalanche danger is high in the mountains.

Heavy snow in excess of a foot will blast the Cascades and Bitterroots, including I-90’s Snoqualmie Pass and other mountain passes. Travel will become extremely difficult, if not impossible, as the snow combines with the fierce winds to create an all-out blizzard.

A shower or two from the potent Northwest storm will reach San Francisco Saturday afternoon, but not drought-stricken Southern California.

Monday through Tuesday, calmer weather will return to Oregon and Washington as the Rockies and neighboring Plains endure more powerful wind events.

More at AccuWeather: Hurricane-Force Winds Whip Northwest, Rockies

A storm currently producing flooding rains and heavy snow in the Pacific Northwest will eject into the Plains early this week allowing arctic air to spill southward from Canada.

Temperatures by Wednesday and Thursday won’t rise above zero in parts of North Dakota and Montana while overnight lows approach 30 F below zero. This cold outbreak will mark the coldest weather of the season for much of the western two-thirds of the nation.

Not only will extreme cold spill into the Plains and parts of the West, but a fresh snowpack will develop after the aforementioned storm moves through the Plains.

RELATED Forecast Temperature Maps Winter Weather Center Northwest: Winter Storm Followed by Brutal Cold

Snowfall amounts through Monday night will approach a foot in parts of the northern Rockies while a swath of 3- to 6-inch accumulations build along the U.S./Canada border.

Additionally, a round of heavier snow is likely for Montana, the Dakotas and Minnesota on Tuesday. Cities such as Fargo, N.D., International Falls, Minn., and Duluth, Minn. could receive in excess of 6 additional inches of snow Tuesday and Tuesday night.

Travel will become extremely difficult over the next few days along interstates 94, 15, 90 and 29. Severe blowing and drifting of the snow will develop areawide Monday night and continue through right through the end of the week.

Behind the snow, Arctic air will push southward, first into the northern Rockies on Tuesday, then into the northern Plains on Wednesday.

High temperatures by Wednesday will hover around zero degrees from Great Falls, Mont., through Billings, Mont., and Dickinson, N.D.

Temperatures will stay in the single digits over an even larger zone from Bozeman, Mont., through Fargo, N.D.

Add in a gusty, northerly wind and that will send AccuWeather RealFeel temperatures to nearly 40 F below zero in some cases both Wednesday and Thursday.

Not only will the daytimes be brutally cold, but the nighttimes will be even worse. AccuWeather.com meteorologists are expecting overnight lows both Wednesday night and Thursday night to fall to between 20 below zero F and 30 below zero F across much of Montana and North Dakota.

Subzero nighttime lows will be found across an even bigger corridor from Idaho through Minnesota.

AccuWeather.com meteorologists urge residents of the northern Rockies and northern Plains to take the proper cold weather precautions.

Have a flashlight and extra batteries available as well as an emergency heat source and extra blankets in your home.

If you have to travel, carry a winter storm survival kid and always make sure your gas tank is near full.

Move cattle to sheltered areas and make sure to bring any pets inside for the duration of the cold.

AccuWeather.com will have more information on the impending cold and snow over the coming days. – AccuWeather

By Michael Doll

Soaking rain, snow and a blast of cold air is heading for the Northwest on Sunday and into this week.

Pacific Northwest

Snow levels on Sunday will start out above pass level in the Washington Cascades.

However, rain can be heavy at times in the foothills and passes with the risk for flooding in low-lying and poor drainage areas. Some rivers and streams can fill and overflow their banks from runoff.

The flood threat and reduced visibility during bouts of heavy rain can cause delays on the roads, including I-90 though Snoqualmie Pass.

Snow levels on Sunday night will fall to pass level and there can enough accumulation to create slippery roads.

Gusty winds over 30 mph will also accompany this storm, which can snap off smaller branches and perhaps cause localized power outages.

By late on Monday into Monday night, snow levels will fall below 1,000 feet across western Washington southward into western Oregon.

Seattle and the surrounding lowlands can get snow showers mixed with rain showers late on Monday and Portland, Ore., can have a snow shower on Monday night.

RELATED Forecast Temperature Maps Winter Weather Center Cold Eases in East, Blasts Into West

Northern Rockies

Snow levels will start out at 5,000 to 6,000 feet on Sunday in the northern Rockies, then fall on Sunday night into Monday as colder air arrives, getting down to the valley floors across Idaho and Montana by Monday morning.

Snow will be heavy at times through Monday night, and the heavy snowfall rates will significantly reduce visibility and cause roads to become snowpacked and treacherous.

Gusty winds will create blowing and drifting, making driving conditions even more hazardous.

Travel across I-90 from northern Idaho into Montana and I-15 in western Montana will become increasingly difficult as the snow starts to pile up.

Brutal Cold

Temperatures across portions of the Northwest will be abnormally cold this week.

Several locations, including Seattle and Portland, will flirt with their record low temperatures at times this week.

For the middle and latter portions of this week, AccuWeather.com meteorologists are forecasting temperatures 20 to 35 degrees below normal for some locations in Idaho, Montana and Wyoming.

There could be numerous record low temperatures either tied or broken, as some locations will plummet to 20 below zero or colder. – AccuWeather

By Michael Doll

Soaking rain, snow and a blast of cold air is heading for the Northwest later this weekend into early next week.

While the ski resorts in the Cascades and northern Rockies will welcome the fresh snow, it will create hazardous driving conditions, especially through the passes.

Snow will be heavy at times Sunday into Monday, and the heavy snowfall rates will significantly reduce visibility and cause roads to become snowpacked and treacherous.

Gusty winds over 30 mph will also accompany this storm.

The winds will cause snow to blow and drift and can also cause localized power outages by snapping off tree limbs.

Times of heavy rainfall can cause localized flooding in low-lying and poor drainage areas, especially in the foothills of the coastal ranges of Washington and Oregon and the Cascades.

RELATED Forecast Temperature Maps Winter Weather Center Cold Eases in East, Blasts Into West

Interstate 90 through the Washington Cascades and across northern Idaho and western Montana will be affected, along with Interstate 15 in western Montana.

Snow levels will start out around 5,000 feet Sunday morning in the northern Rockies then fall Sunday night into Monday as colder air arrives, getting down to the valley floors across Idaho and Montana by Monday morning.

By late Monday into Monday night, snow levels will fall below 1,000 feet across western Washington southward into western Oregon.

Seattle, Wash., and the surrounding lowlands can get snow showers mixed with rain showers late Monday and Portland, Ore., can see a snow shower Monday night.

Temperatures across the Northwest will be abnormally cold into the middle of next week.

Several locations, including Seattle and Portland, will flirt with their record low temperatures both Tuesday night and Wednesday night.

AccuWeather.com meteorologists are forecasting nighttime temperatures to dip into the teens and 20s.

Snow and locally gusty winds will spread rapidly across Washington, Idaho, Montana and Wyoming this weekend, making for slippery travel.

The some of the heaviest snow is forecast to fall on Snoqualmie and Lookout passes along I-90 in Washington and Montana, respectively. Motorists traveling through these areas should expect delays and restrictions due to 6 to 12 inches of snow with blowing and drifting.

Motorists who must travel cross country may want to take a more southern route such as I-84 to I-80.

Most of the snow will fall over the mountains in the Northwest and northern Rockies, but not all of it.

RELATED: Northwest Regional Radar Loop Winter Weather Advisories, Watches and Warnings Natural Gas Prices Spike as Cold Grips the US

Light to moderate snow is forecast to fall over much of central Idaho and western Montana. A moderate amount of snow is expected around Spokane, Wash.

Some snow will also reach southward into part of the Oregon Cascades and Blue Mountains, as well as the Tetons in Wyoming, the Rockies in Colorado and the Wasatch in Utah.

Several inches of snow will blanket Missoula and Bozeman, Mont.

A small amount of snow can coat the ground around Boise and Pocatello, Idaho, and around Salt Lake City.

Rain is in the offing in coastal Washington from Bellingham to Seattle and Tacoma and southward to Portland, Ore. Mostly rain showers are likely around The Dalles and Pendleton, Ore.

During Sunday into Monday, some snow will swing out over the northern and central Plains to the Upper Midwest. Only spotty snow is forecast in these areas, but gusty winds may cause some problems for travelers on I-90 and I-94.

The storm will bring a fresh dose of snow for ski resorts in the Rockies that will be open for the Thanksgiving weekend.

The storm will usher in a new wave of cold air from the northern Plains to the East next week.

Despite indications from earlier this past week, it now appears the brutally cold air will stay north of the Canada border. However, the new cold wave will still have a bite in the Central and Eastern United States, shaving temperatures by 20 to 30 degrees from weekend highs. – AccuWeather