Jasper

A persistent weak layer remains the primary concern across the region and continues to produce large, destructive avalanches. Don't get caught off guard!

Stick to low-angle terrain and avoid exposure to steep slopes overhead.

Moderate

• We are confident that there are persistent slabs in the snowpack, but uncertain about how likely they are to trigger.

A size 3.5 Persistent Slab avalanche on Mt Morden Long in Jasper National Park was observed on March 5, 2026 (see photo). Although there is a decrease in natural activity on the persistent weak layer there remains a very real potential for large destructive avalanches.

5-10cm of new snow fell on March 3, however warm temperatures have formed a melt freeze crust on solar aspects to 2200m. Recent winds have also redistributed the snow in exposed areas Alpine and Treeline forming windslabs.

Of most concern right now is a 40-80cm slab sitting atop the Jan 24th weak layer of facets & surface hoar forming a persistent slab.

Although generally the midpack is well consolidated, there is a large amount of variability with thin areas remaining weak.

Friday

Cloudy with sunny periods and isolated flurries (trace amounts). Ridge wind light to 25 km/h. Alpine High -3 °C. Freezing level 1800 metres.

Flurries (8 cm). Mostly light ridge wind occasionally gusting to 45 km/h. Alpine temperature Low -3 °C and High 1 °C. Freezing level 2300 metres.

Flurries (6 cm). Mostly light ridge wind occasionally gusting to 55 km/h. Alpine temperature Low -11 °C and High 0 °C. Freezing level: 2200 metres.

• Look for signs of instability: whumphing, hollow sounds, shooting cracks, and recent avalanches.
• Keep in mind that human triggering may persist as natural avalanches taper off.