Dashboard Regions Weather Stations Radar Alerts Glossary
Contact About
Log In

Register for an account and never miss a forecast again!

Register

Avalanche Forecast

Archived

Apr 1st, 2022–Apr 2nd, 2022

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches unlikely, human triggered possible.

Regions

Lizard-Flathead.

Watch for the formation of thin fresh wind slabs Saturday, especially if we get more than 10 cm throughout the day.

Confidence

Low - Forecast precipitation (either snow or rain) amounts are uncertain.

Weather Forecast

FRIDAY NIGHT: Freezing level at valley bottom, no significant snowfall expected, light southwest wind.

SATURDAY: Broken cloud cover, 5 to 10 cm of snow possible, light southwest wind, freezing level around 1600 m.

SUNDAY: Clear skies at dawn building to overcast by lunch, a couple cm of snow possible, light to moderate southwest wind, freezing level around 1700 m. 4 to 8 cm possible Sunday night.

MONDAY: Overcast, 10 to 35 cm of snow possible, strong southwest wind, freezing level around 1700 m.

Avalanche Summary

No new avalanches were reported since Tuesday when natural wet avalanches were reported on steep sun affected slopes to size 1. Wet avalanche activity is expected to decrease with cooler temperatures this weekend. 

Snowpack Summary

The upper snowpack is going through a daily melt-freeze cycle. A crust exists on all aspects to around 2500 m and likely to mountain top on sun affected slopes. Warm temperatures and sun are softening or breaking down the crust during the day and creating moist snow. At very low elevations, the snowpack may be wet and isothermal, depending on overnight freezing levels. 

The mid and lower snowpack are generally strong and well bonded.

Terrain and Travel

  • Wind slabs may be poorly bonded to the underlying crust.
  • Watch for fresh storm slabs building throughout the day.
  • Watch for unstable snow on specific terrain features, especially when the snow is moist or wet.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.