Officials issued an avalanche warning for Banff, Yoho and Kootenay National Parks after two skiers were partially buried by an avalanche Saturday.

The pair were skiing in Yoho National Park when they were caught in a size 3.5 avalanche on the Emerald Lake slide path, but managed to escape unharmed.

A nearby group helped the skiers find a safe zone before Parks Canada staff arrived at the scene.

Officials say the high avalanche risk in alpine and tree line areas is due to new snow and a warming trend in the mountains.

People should avoid areas where there is a high avalanche risk and should only travel in areas with simple terrain or within the boundaries of a ski resort.

Avalanche danger had also closed several highways in the mountain parks, but many of those routes have since re-opened.

Highway 93 South has re-opened from Radium Hot Springs to Castle Junction at the Trans-Canada Highway.

The Trans-Canada Highway has re-opened from the Alberta-B.C. border to the western boundary of Yoho National park, including to Field, B.C.

And the Trans-Canada Highway has re-opened from Golden to Revelstoke in B.C.

The Trans-Canada Highway remains closed in both directions from Golden to the west boundary of Yoho National Park due to a high avalanche risk west of Golden in the Kicking Horse Canyon.

The estimated re-opening time is Sunday at 6 p.m.

More information can be found at the Drive B.C. website or the AMA road reports website.