‘That’s Calgary. That’s spring. You deal with it.’

Last Updated: Wednesday, April 28, 2010 | 7:20 PM MT

CBC News

Rain turned to snow in the Calgary neighbourhood of Citadel on Wednesday. (CBC)

Calgary is forecast to get a blast of 20 centimetres of snow by Thursday evening, one week after basking under sunny 20 C skies.

Rain was already turning to wet snow Wednesday in some parts of Calgary, which is under a winter storm warning from Environment Canada.

The agency warned of “dangerous winter weather conditions” for Calgary and surrounding areas, including Airdrie, Sundre, Okotoks, Olds and Strathmore.

More than a dozen flights have been cancelled at the Calgary International Airport.

The RCMP said Highway 533, west of Nanton from Highway 2 to 22, is not recommended for travel because of heavy snow and poor road conditions.

An intense weather system is also bringing winds gusting up to 70 km/h.

Many people are taking the third major snowstorm in the Calgary area this month in stride.

“If it snows, it snows. That’s Calgary. That’s spring. You deal with it,” said Lyndon Penner, working at the Plantation Garden Centre. “We have been waiting for moisture. I don’t really care whether it’s snow or rain or three feet of ice. if it’s moisture, I’m not going to say no to it.”