Carmacks crews were out in force Wednesday night and into Thursday morning as the province has authorized around-the-clock snow maintenance on Deerfoot Trail during the winter storm.

City of Calgary road crews preemptively placed deicing material on major roads and thoroughfares in the hours before the storm's arrival.

"Our crews will continue to be on our Priority One and slip into our Priority Two routes until the snow has stopped," said Bill Biensch, City of Calgary roads maintenance manager. "once the snow has stopped, our crews will cleanup our Priority Ones and we feel that by the weekend we'll be into our Priority Two routes."

Calgary Airport Authority officials recommends that passengers prepare to face delays and to review their flight status prior to arriving at the Calgary International Airport. More than 30 workers have been deployed to operate machinery to clear runways throughout the night.

Strathcona-Tweedsmuir School officials announced the school will be closed on Thursday due to poor road conditions.

Parents and guardians of other school districts are encouraged to check Thursday morning to see if classes will be in session on Thursday.

Environment Canada has issued snowfall warnings for the City of Calgary and the majority of southern Alberta. As of 10:00 p.m. Wednesday, snowfall warnings remained in place for the following regions:

For updated weather watches and warnings, visit Environment Canada –Public Weather Alerts

With files from CTV's Jordan Kanygin