Avalanche Forecast
Avalanche Bulletin - Glacier National Park
Conditions are changing quickly. With heavy snowfall expected today, storm slabs will become touchy!
Avalanche Problem 1: Storm Slabs
What Elevation?
Which Slopes?
Chances of Avalanches?
Expected Size?
Travel and Terrain Advice
- Be cautious of sluffing in steep terrain.
- Use caution in alpine and open treeline lees. Recent snowfall has created storm slabs.
Avalanche Summary
Reports yesterday came in of a skier triggered sz 1 storm slab on the fan of Cheops North 5. It propagated 50m wide and was up to 30 cm deep. Expect to see more avalanches like this but larger as we get more snow or the new settles into a slab on the Dec 15th surface hoar.
Snowpack Summary
15cm of new snow fell in the last 48 hrs burying the Dec15th interface. This layer is the one to watch develop. It is widespread surface hoar found at all elevations and is LARGE (30-40mm) in sheltered areas at treeline. The new snow also buries crusts on S & W aspects and windslab in the alpine. The Nov crusts, buried down ~70cm are bonding well.
Weather Forecast
Snow is on the way!! Today we can expect 10cm with another 10-15 tonight. Ridgetop wind will be from the SW at 20kph with freezing level up to 800m. Monday we will see the precipitation ease before another weather system brings moderate precip to Rogers Pass Tuesday.
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After a long dry spell, 15cm of new snow has fallen on widespread surface hoar. Another 25 is expected today! As this new snow settles into a cohesive slab, expect to see avalanche hazard spike! Also expect sluff to be heavy and fast!