Unsecured items like trash cans or holiday decorations could go "tumbling down the street," but no damage to trees or structures is expected.

The Cold Weather Advisory is in effect until midnight on Wednesday, according to the National Weather Service.

Milwaukee had its coldest Jan. 21 since 1984 on Tuesday as the city, along with the rest of the state, was under a dangerous Extreme Cold Warning. According to Milwaukee-Sullivan National Weather Service meteorologist Taylor Patterson, Milwaukee reached its lowest air temperature of the day at 7:34 a.m., at minus-10.

The center at 12th and Vliet is open from 8 a.m. to 5:30 p.m. on Monday and Tuesday due to the cold. Nick Tomaro with the Milwaukee Health Department said more than 100 people took advantage of the center on day one. Darnell Bonner said on Sunday, he was rushed to the hospital for hypothermia while waiting for a shelter to open.

An "artic air mass" will be moving into the region from Canada as we head into the weekend, causing temperatures to tumble.

Several Milwaukee-area services, resources and programs won't be available Tuesday due to the extreme cold. Many area schools, including Milwaukee Public Schools, have also already announced Tuesday closures.

Milwaukee will kick off this week with the most extreme cold of the winter so far. During the coldest periods, wind chill is forecast to range between -15 and -30 degrees. That's well beyond the threshold for developing frostbite and other adverse health symptoms from cold-weather exposure.

The city saw its warmest-ever Jan. 30 in 1988; it was 53 degrees. Milwaukee's average Jan. 30 high is 31 degrees.

Some areas of southeastern Wisconsin saw upwards of three inches of snow, which was heavier than anticipated, according to National Weather Service Milwaukee meteorologist Taylor Patterson. Milwaukee is not expected to get any more snow in the coming week, as temperatures rise above freezing over the weekend, she said.

MILWAUKEE - The National Weather Service has issued a wind advisory through 6 p.m Monday, Jan. 27 for winds that can gust from 45mph to 50mph. This can easily blow around unsecured objects outside, break small tree limbs, and even cause isolated power outages.

We’re working to learn more about an unusual sight in the sky that caught the attention of people across the state Tuesday evening.

The NBA has postponed Wednesday night's game between the New Orleans Pelicans and Milwaukee Bucks due to extreme weather conditions in New Orleans. A date for the rescheduled game has yet to be announced,