At a Glance Temperatures have dipped between -40 and -50 degrees in some parts of Alaska since this weekend.This cold snap will linger much of the week, if not longer.This follows what has been a record warm year-to-date for many Alaska locations. If you're dreading the cold arriving this week, consider the frigid cold now enveloping Alaska and expected to last through much of the week in our 49th state. (MORE: | ) Parts of Alaska's interior saw temperatures as...

This is a developing weather story. Please . Parts of the Pacific Northwest's lower elevations, including the Seattle and Portland, Oregon, metro areas, saw a little snow Monday, and more snow is possible starting Wednesday night. (INTERACTIVE:|) Recap of December 5 Northwest Snow The first system entered the West Coast on Monday morning, causing snow showers to fall around the Seattle metro area. No major accumulations were reported, but some locations saw a dusting. The official measurement at Seattle-Tacoma International...

Meteorologist Ari Sarsalari looks at how intense the blizzard is getting in North Dakota where it has completely blocked a door in one home. ...

This is a developing weather story. Please . The latest winter system will lay down an over 2600-mile swath of snow from the Pacific Northwest, including Seattle and Portland, Oregon, to the Rockies, Plains, Midwest and Northeast into early next week. Winter storm watches are in effect for much of the Northwest and northern Rockies, meaning there is potential for significant snow, sleet or ice accumulations that my impact travel. (MORE: ) With the coldest air of the season either...

Lake-effect snow streaming eastward from the Great Lakes into parts of Michigan, Wisconsin, northern Indiana, northeastern Ohio, Pennsylvania, western New York and southern Ontario on December 10, 2016. Snow on the ground can be seen in parts of New England and southern Canada. Cloud cover ahead of Winter Storm Caly can be seen in Iowa, Illinois, and Indiana. (NASA/Terra/MODIS) At a Glance An arctic air mass overtook the Great Lakes region in early to mid December.The air is more than...

At a Glance Caly was a long-lived winter storm in early December 2016.Snow and ice impacted parts of the Northwest, Midwest, Great Lakes and Northeast states. Winter Storm Caly brought a swath of snow and some ice from the Pacific Northwest to the Midwest, Great Lakes and Northeast Dec. 8-12, 2016. The storm knocked out power, caused many accidents, and led to the cancellation of hundreds of flights during its cross-country journey. (MORE:) Below is a recap showing some of...

Meteorologist Ari Sarsalari takes a look at just a few of the many multi-car pile ups that happened around the Great Lakes region. ...

At a Glance Winter Storm Caly has killed at least nine people, making roads hazardous from the Northwest all the way to New England.A plane slid off a Detroit airport runway during icy conditions, and hundreds of flights were canceled in Chicago.Up to 100 people had to be rescued after a downed power line left them trapped on a train in Portland, Oregon. At least nine people have been killed by the impacts of Winter Storm Caly, a wintry menace...

Brandon Grimes, from left, 9, Braeden Beasley, 8, and Austin Ricks, 4, have a snowball fight in Asbury, Iowa, on Sunday, Dec. 11, 2016. The Dubuque, Iowa, area received 4 inches of snow overnight, less than forecasters had expected. (Nicki Kohl/Telegraph Herald via AP) Winter Storm Caly, the third named storm of the 2016-17 season, dumped sizable amounts of snow across the Northwest, Midwest and Northeast on a multi-day trek across the country. The storm was responsible for at least...

At a Glance Another storm system will bring snow and some ice across the country later this week.This system arrives in the Northwest Wednesday, then spreads its wintry mess east into the weekend.Some areas affected by Winter Storm Caly last weekend will see more snow from this system. This is a developing weather story. Please . Another cross-country winter storm packing snow, strong winds and some ice is likely to impact a large swath of the nation during the second...

At a Glance Heavy lake-effect snow led to travel slowdowns and even a few road closures Wednesday in the Buffalo area.Schools and government offices dismissed early Wednesday in and around the Buffalo area. Heavy lake-effect snow pummeled the Buffalo area on Wednesday, overwhelming drivers as visibilities were reduced to nearly zero. Snowfall rates up to 5 inches in a 90-minute span were reported in western New York, and travel quickly became dangerous. Officials were forced to close the Skyway, ,...

Lake-effect snow and heavy wind created white-out conditions in Oswego, NY. ...

Meteorologist Ari Sarsalari explains how lake-effect snow caused a massive car pileup in western Pennsylvania near State College. ...