Winter storm tracker: Almost every US state under a weather alert

Almost every single U.S. state was under some form of weather alert Saturday -- ranging from flood watches in the east to blizzard warnings in Iowa to wind chill warnings for over a dozen states in the central U.S.

Canceled flights and power outages

Over 1,100 flights were canceled as of Saturday morning, according to FlightAware. It comes after more than 2,000 were canceled on Friday.

Chicago's O'Hare International Airport continued to see impacts with 9% of its flights canceled and Detroit's Metropolitan Wayne County with 13% of flights canceled on Saturday.

Although a smaller airport, Buffalo Niagara International Airport saw 56% of its flights canceled. New York Gov. Kathy Hochul had declared a state of emergency Friday afternoon for western New York due to whiteout conditions causing travel to be difficult.

As of Saturday evening, more than 443,000 customers are without power across five states -- Oregon, Michigan, Wisconsin, Pennsylvania and New York -- according to PowerOutage.us.

Oregon is experiencing the highest number of customers with outages for more than 236,000, followed by Michigan with outages for more than 101,000 customers.

NFL playoffs: Postponed in Buffalo, frigid temps in Kansas City

One to three feet of snow through Monday is expected to fall in Buffalo and the surrounding area.

Gov. Hochul wrote Saturday afternoon on X, the platform previously known as Twitter, that the NFL wildcard playoff game between the Buffalo Bills and the Pittsburgh Steelers has been postponed to 4:30 p.m. ET on Monday.

"I've been in communication with @NFL commissioner Roger Goodell regarding the dangerous conditions in Buffalo this weekend. In consultation with our emergency response teams, @BuffaloBills leadership, and the NFL, the Bills game will be postponed to 4:30 pm Monday," she wrote.

In another playoff game taking place Saturday evening in Kansas City with the Kansas City Chiefs playing the Miami Dolphins, the game time temperature is expected to be minus 4 F. with wind chills expected to make it feel like minus 20 F to minus 25 F.

Deaths amid winter weather

The snow and bitter cold temperatures have brought dangerous conditions and have even led to a few deaths.

In Franklin, Wisconsin -- located 16 miles southeast of Milwaukee -- the Milwaukee County Medical Examiner's Office is investigating the death of a 69-year-old man who is believed to have died while snow blowing his driveway, according to local reports. The death is not being viewed as suspicious.

In Schiller Park, a suburb of Chicago, a man was found dead due to cold exposure, becoming the first cold-related death of the season, according to o the Cook County Medical Examiner's Office, the Associated Press reported.

A person is suspected of dying from hypothermia in Portland, Oregon, on Saturday, after a state of emergency was declared due to dangerously cold temperatures, Multnomah County officials said. The death is under investigation.

Blizzard conditions, flooding threat and more cold

In the upper Midwest, heavy snow and gusty winds have caused whiteout conditions as a blizzard raged earlier Saturday. Des Moines, Iowa, has been hit with nine inches of snow and Davenport -- located on the eastern border with Illinois -- was hit with 15 inches.

In addition to the snow totals, winds gusting over 45 miles per hour led to rough travel conditions with blowing and drifting snow.

The winter conditions come days before Iowa Republican voters gather to caucus on Monday.

The Northeast has been getting drenched by rain for the past 24 hours, but it is expected to taper off as the day continues.

Some communities also experienced flooding including those in the northern part of New Jersey and saw rain overnight Friday into Saturday.

New Jersey Gov. Phil Murphy will visit flood-damaged Paterson early Saturday afternoon, according to a schedule provided by his office.

As the wind chills continue into Monday morning, southern cities including Dallas, Nashville and Little Rock, Arkansas, will have temperatures that feel like single digits, while cities including Oklahoma City and Amarillo, Texas, will have temperatures that feel like below zero.

ABC News' Matt Foster, Jessica Gorman, Ahmad Hemingway, Alex Perez and Ileana Riveros continued to this report.