A winter storm has impacted a large portion of the country this weekend and forced the NBA, NHL and college basketball to make adjustments to their schedules.

The NBA announced that the Denver Nuggets vs. Memphis Grizzlies game in Memphis that was scheduled for Sunday at 3:30 p.m. ET has been postponed.

The NBA previously announced that Saturday’s game between the Washington Wizards and Charlotte Hornets in North Carolina would begin at 12 p.m. ET after being originally scheduled for 6 p.m. ET.

The Nashville Predators announced that their game against Utah on Saturday was moved up two hours to 1:30 p.m. ET ahead of the storm.

The ACC moved up the start times for three games on Saturday, including No. 5 Duke hosting Wake Forest.

Here are some of other notable start times that were impacted, per the Associated Press:

The AP report also notes that the Sun Belt conference preemptively adjusted its schedule for games from Thursday through Saturday, while the American conference moved some men’s and women’s basketball games up to Friday.

Rice basketball effectively hosted back-to-back games at Tudor Fieldhouse on Saturday, as the women’s mathcup against Tulane tipped off at 1 p.m. ET and the men’s game against Tulsa at 3:30 p.m. ET.

The Richmond-George Mason women’s game was played on Saturday at 11 a.m. ET with fans not permitted to attend.

Per Weather.com, the “historic” storm is tracking to begin in the southern part of the U.S., ranging as far west as Arizona, and moving east with “significant snow and/or ice” expected to impact at least 34 states and more than 220 million people.

Ice accumulations could exceed one-quarter of an inch, with 10 states between Texas and Virginia likely to be the most significantly impacted. This includes cities such as Nashville, Greenville-Spartanburg, Charlotte, Raleigh-Durham and Richmond. The combination of ice and high winds could lead to extended power outages in those areas.

The area between New Mexico and New York will be under a winter storm warning. A large strip of the country from the Texas panhandle to the northeast, including New York City and Boston, could see at least a foot of snowfall.