Expected record-high temperatures this week has prompted Avalanche Canada to issue a special warning for its entire region - from the Yukon to the U.S. border and from the Pacific to the Rockies.
"We're expecting this weather to have a big impact on the snowpack," Avalanche Canada warning service manager Karl Klassen said in a statement issued Tuesday afternoon.
"Given that many slopes have yet to see a full-blown warm up we are predicting a widespread and varied array of avalanche problems this week including cornice failures, surface-layer avalanches, and failure on deeper persistent weak layers.
"While this is not atypical weather for this time of year, clear-sky days often lead to underestimating hazard and failing to manage risk appropriately."
When the morning sun strikes alpine slopes and cornices, backcountry users should move onto terrain that's safe from avalanches that start high above and run well into lower elevations.
As daytime temperatures rise and the upper layers of the snowpack become moist or wet, recreationists are advised to avoid avalanche terrain completely.
"Starting trips in the morning when it's still cold and before the sun rises, with the goal of being out of avalanche terrain by early afternoon at the latest, is a good risk management strategy,"Klassen said.
Everyone in a backcountry party needs to have an avalanche transceiver, probe and shovel. A two-day avalanche skills training level one course is the minimum training recommended for travelling in avalanche terrain.
The warning is in effect until at least the end of Friday.
For current conditions, check www.avalanche.ca.
