More than 4 feet of snow is expected in parts of the Midwest and Western New York as the coldest air of the season grips the eastern part of the country.

Lake effect snow is slamming the Great Lakes, with seven states from Wisconsin to New York under snow alerts on Monday.

Millions of Americans are under lake-effect snow alerts during one of the busiest travel weekends of the year after Thanksgiving.

Officials in upstate New York are preparing for a major snowstorm forecast to drop more than 2 feet of snow.

More than 4 million people are under winter alerts for lake effect snow along the Great Lakes with 3 to 5 feet of snow expected in some areas.

A blast of Arctic air taking over much of the U.S. is bringing powerful lake-effect snow to several states and shivering temperatures to parts of the South.

ABC News' Morgan Norwood has the latest on the lake effect snow affecting millions of travelers.

Winter alerts, including lake effect snow warnings, are posted for parts of Wisconsin, Michigan, Ohio, Pennsylvania and New York as an Arctic air mass is taking over much of the country.

Rain fell across the Northeast on Thursday morning, setting up what's bound to be a soggy Thanksgiving for dozens of states.

ABC News’ Sam Champion has the latest on the rainy holiday forecast for the parts of the Northeast and snow expected for states in New England.

Rain is falling across the Northeast on Thursday morning, setting up what's bound to be a soggy Thanksgiving for dozens of states.

Tens of millions of Americans are traveling by road or air for what is expected to be record travel during the Thanksgiving holiday, with a coast-to-coast storm moving into the Northeast. 

ABC News’ Chief Meteorologist Ginger Zee is tracking the storm as it moves into the Northeast with colder temperatures and rain expected for the parade in New York City on Thanksgiving.

Snow and rain are in the forecast for some parts of the U.S. as travelers hit the road and head to the airport for Thanksgiving.

Climate and weather are two terms that go hand in hand but often get conflated.

Climate and weather are two terms that go hand in hand but often get conflated. ABC News chief meteorologist Ginger Zee breaks it down.

ABC News chief meteorologist Ginger Zee is tracking the rain and snow expected in parts of the country.

Snow is expected in Minnesota, northern Wisconsin and Michigan's Upper Peninsula on Monday. Meanwhile, rain could impact cities from Chicago and Detroit to Indianapolis.

ABC News Chief Meteorologist Ginger Zee shares the latest look at the weather across the country for the holiday week.

Snow is headed to the Midwest and the West ahead of Thanksgiving, while rain will target the East Coast on Thanksgiving Day.

Looking ahead to Thanksgiving, there may be issues for travelers across parts of the country due to cold temperatures and possible rain and snow across the country.

Thanksgiving is just days away with millions of Americans getting ready to hit the roads and skies, but rain and snow could complicate the holiday travel rush.

Extreme weather is making power outages longer and more frequent across the U.S. People with health conditions who depend on medical devices powered by electricity are particularly vulnerable

The West has been hammered with days of rain while some parts of the Northeast clean up after nearly 20 inches of snow.

The heavy, wet snow in Pennsylvania created conditions so slick that pickup trucks and plow trucks got stuck. Meanwhile, intense rain in the West increased the danger of floods and mudslides.   

ABC News’ Ginger Zee shares the latest track for the storms and how the weather could impact your travel plans.

Millions are on alert for flash floods as a powerful storm soaks the West Coast.

Much-needed rain soaked the Northeast, though it won't be enough to end a drought. On the West Coast, the storm system brought torrential rain to Northern California, raising the risk of mudslides.

Over the past three months, there has been a significant lack of precipitation across the Northeast, according to experts.

Two people were killed by falling trees in Washington state as a powerful storm hammered the Pacific Northwest.

Two people were killed by falling trees in Washington state as a powerful storm hits the Pacific Northwest.

The Northeast braced for its heaviest rain in months as it endured a record drought, while the bomb cyclone spiraling in the Pacific is hitting the West Coast.

A major storm was sweeping across the U.S. Northwest, battering the region with strong winds and rain

The bomb cyclone bringing high wind gusts to the Pacific Northwest is about to pull in a plume of moisture in the form of an atmospheric river.

Residents throughout Northern California and parts of the Pacific Northwest are preparing for an onslaught of rain and wind throughout the region.

ABC News’ Ginger Zee shares the latest forecast as storms prepare to hit both coasts.

It is not possible for anyone -- whether it be the government, scientists or billionaires -- to control the weather, according to experts.

ABC News chief meteorologist Ginger Zee explains the technique that increases a cloud’s ability to produce rain or snow.

Firefighters battling an outbreak of wildfires across the Northeast amid a historic autumn drought could get some relief from Mother Nature by the middle of this week.

A massive plume of moisture from the Pacific called an atmospheric river will hit the West Coast on Tuesday afternoon and last into Friday.

ABC News’ Ginger Zee has the latest forecast, which shows more than an inch of rain expected later this week.

New York Gov. Kathy Hochul declared a drought watch for the state. Fifteen counties, including New York City, have been issued drought warnings. Residents have been urged to conserve water.

ABC News’ Somara Theodore reports on the Northeast fire threat and the latest tracking on Tropical Storm Sara.

Red flag warnings are in effect across eight states, including nearly 43 million people in the northeast as fire danger remains elevated.

The storm is expected to sweep across Honduras and Belize on Saturday, unleashing up to 35 inches of rain in some areas over the next several days.

Dry conditions in the Northeast are worsening, creating a scenario for fire danger in the region to persist, an updated map from the U.S. Drought Monitor shows.

Local governments are preparing and building structures to minimize the damage.

Firefighters battled brush fires in New Jersey and Brooklyn.

A large storm over the central U.S. is bringing a range of weather issues, from flooding rain and severe weather to heavy snow in the Rockies.

Thousands of firefighters continue to battle a blaze in California, aided by Friday's slower winds, while a helicopter dropped water to quench a wildfire near New York's George Washington Bridge.