Avalanche Forecast
Avalanche Bulletin - Glacier National Park
Recent snowfall has created a widespread storm slab. When the sun comes out expect the slab to become more touchy and natural avalanche activity to pick up!
Avalanche Problem 1: Storm Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Travel and Terrain Advice
- Avoid convexities and unsupported features.
- Avoid slopes when the solar radiation is strong, especially if they have large cornices overhead.
Avalanche Problem 2: Persistent Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
A suncrust and facet layer is buried down 40-70 cms on solar aspects. This is a bad combo of a weak layer and strong bed surface. This layer has the potential to be human triggered with wide propagation. Dig down and have a look for it.
Travel and Terrain Advice
- Make observations and assess conditions continually as you travel.
Avalanche Summary
Yesterday's snowfall produced a natural avalanche cycle to size 3. Field teams observed a touchy storm stab in leeward features treeline and above. A party in the Loop Brook drainage noted an avalanche from Mt Ross that ran into the creek at the valley bottom covering previous ski tracks.
Snowpack Summary
20 cms of new snow in the last 48 hrs. This buries firm wind slab on all aspects above tree line and on solar aspects it buries a crust. The late Feb crust/facet combo is down 30-50cm on solar aspects and has potential to be a good bed surface. The January PWL's are buried 150-200cm
Weather Forecast
Today will be cloudy with sunny periods and isolated flurries. A trace amount of precip is forecast today. Ridgetop wind will be southwesterly 15-30kph with freezing level up to 600m. No significant precip is forecast until later in the week but convective flurries are possible which could significantly boost snowfall amounts.
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Recent snowfall has created a touchy storm slab. Expect this snow to be reactive at ridgetop or in steep unsupported terrain. Sunny breaks are forecast today, even short bursts of the strong spring sun could make the new storm snow more reactive.