| CBC News

A blast of winter weather caused more than a hundred crashes on Calgary roads Tuesday morning as well as forcing bus detours and delayed or cancelled flights.

Ten to 15 centimetres of snow were expected to fall on the city on Tuesday, according to a warning from Environment Canada.

The Calgary Police Service said there were 113 collisions on city streets between midnight and 11:30 a.m., including 13 that injured people and 10 hit-and-runs.

The Calgary International Airport reminded travellers to arrive early and check for any schedule changes as the snowfall has affected some flights.

The Calgary International Airport tweeted that the snowfall was affecting flights and apologized for the delays, with some travellers saying they had been stuck on the tarmac for an hour or more. (Robson Fletcher/CBC)

The airport's website listed more than a dozen cancelled flights and many delayed flights.

Some travellers reported lengthy waits on the tarmac as planes queued for de-icing before takeoff. 

Environment Canada says a low pressure system swept into southwestern Alberta late Monday and tracked east early Tuesday morning.

The snow is expected to taper off by Wednesday morning.

"Prepare for quickly changing and deteriorating travel conditions. Surfaces such as highways, roads, walkways and parking lots may become difficult to navigate due to accumulating snow," the warning read.

A man shovels snow Tuesday in downtown Calgary. The heavy snow was expected to taper off by Wednesday morning. (Todd Korol/The Canadian Press)

Calgary Transit said the following routes have been detoured because of the snowfall:

  • Route 6
  • Route 17.
  • Route 20.
  • Route 156.
  • Route 299.
  • Route 414.

"Our crews have out since last night laying down salt to help with the melting," said City of Calgary Roads spokesperson Chris McGeachy.

"Road salt is actually the best thing when the temperature is hovering around zero to –10."

Every piece of the city's available equipment is out on the roadways and crews will be working 24/7, focusing first on Priority 1 routes such as Memorial Drive and Crowchild Trail, McGeachy said.

The snowfall warning also covers:

  • Airdrie, Cochrane, Olds and Sundre.
  • Okotoks, High River and Claresholm.
  • Brooks, Strathmore and Vulcan.
  • Medicine Hat, Bow Island and Suffield.

A complete list of weather warnings can be viewed on Environment Canada's website.

Rachelle McNiel shovels snow on the sidewalk outside her home on 27th Street N.W. (Scott Crowson/CBC)

The snowfall slowed down the morning commute in Calgary. (Mike Symington/CBC)