A low pressure system over eastern Alberta is bringing winter conditions and poor highway visibility. (AMA)

Southeastern Alberta is under a winter storm warning Monday with RCMP closing the Trans-Canada Highway from the Saskatchewan border to Dunmore, Alta., because of road conditions earlier in the day.

The Trans-Canada was still closed near the Saskatchewan border Monday night.

So was Highway 41 from the Trans-Canada just east of Medicine Hat, Alta., north to Oyen, Alta., as crews worked to reopen the highway.

Calgary is expected to be spared the bad weather.

A swath of the map from Red Deer to the U.S. border and east to Saskatchewan should expect 10 to 25 centimetres of snow on Monday with wind gusts up to 70 kilometres per hour, Environment Canada said.

The intensifying low pressure system is expected to bring blizzard conditions to the areas around Hanna, Medicine Hat, and Cypress Hills.

The Alberta Motor Association is warning drivers that visibility will be reduced on highways east of Calgary.

"Even though tomorrow is the first full day of spring, it’s normal for us to get these kinds of wintery storms in March. The worst of it should be out by 10 p.m. tonight," CBC Calgary meteorologist Danielle Savoni.