Flathead

A weak layer in the snowpack remains a concern for human-triggering. Don't let your guard down.

Keep an eye out for signs of instability like whumpfing and cracking.

Moderate

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

A remote triggered size 1 avalanche was reported on Tuesday at treeline on a north facing slope.

The South Rockies Field team reported widespread whumpfing as they travelled on north facing slopes in the alpine on Tuesday.

Roughly 10 to 15 cm of wind affected new snow overlies a widespread variable crust on all but high alpine north facing terrain.

A weak layer of surface hoar on a melt-freeze crust, with a thick layer of facets below, formed in late January is buried 20 to 50 cm deep.

The mid and lower snowpack remain well settled, with no significant concerns at this time.

Tuesday Night
Clear skies. 30 km/h west ridgetop wind. Treeline temperature -6 °C.

Wednesday
Sunny. 20 km/h west ridgetop wind. Treeline temperature -5 °C.

Thursday
Mostly sunny. 40 km/h west ridgetop wind. Treeline temperature -4 °C.

Friday
Mostly sunny. 40 km/h southwest ridgetop wind. Treeline temperature -5 °C.

More details can be found in the Mountain Weather Forecast.

• Be careful with wind-loaded pockets, especially near ridge crests and rollovers.
• Be alert to conditions that change with elevation, aspect, and exposure to wind.
• Pay attention to isolated wind affected features in the alpine, as well as cross-loaded features at treeline.