Avalanche Forecast

Low

A few naturally triggered size 2 wind slab avalanches were reported on steep, northerly aspects in the alpine on Thursday.

Observations are limited at this time of year, please consider sharing any information or photos you have on the Mountain Information Network to help guide our forecasts.

Forecast 15-25 cm of snow and extreme southerly wind will form reactive storm slabs.

A crust exists up to ridgetop on south-facing slopes and on all aspects up to approximately 1300 m.

A weak layer buried in late March is down 40-60 cm and exists as surface hoar and facets on north-facing slopes and a crust elsewhere.

The mid and lower snowpack is considered generally strong and well-bonded.

Friday Night

Cloudy with flurries; 3-15 cm / 60 km/h south ridgetop wind / Temperature at treeline around -3 C / Freezing level 900 m

Saturday

Snow; 10-20 cm, then another 10-20 cm overnight / 70 km/h south ridgetop wind / Temperature at treeline around -2 C / Freezing level 1200 m

Sunday

Cloudy with flurries; 5-10 cm / 40 km/h south ridgetop wind / Temperature at treeline around -3 C / Freezing level 1100 m

Monday

Cloudy with flurries; 5-10 cm / 50 km/h southwest ridgetop wind / Temperature at treeline around -4 C / Freezing level 1000 m

More details can be found in the Mountain Weather Forecast.

• Storm slab size and sensitivity to triggering will likely increase through the day.
• Watch for signs of instability like whumpfing, hollow sounds, shooting cracks or recent avalanches.
• Use small low consequence slopes to test the bond of the new snow.
• Avoid steep, rocky, and wind effected areas where triggering slabs is more likely.