Avalanche Forecast

On Thursday, numerous solar-induced avalanches were triggered on steep southerly slopes at treeline near Mount Washington.

On Wednesday, several natural storm slabs (up to size 1.5) were reported on northerly aspects at treeline.

Human-triggered storm slabs were also easily triggered (up to size 1) on west, north and east aspects at treeline and below.

If you are heading out into the backcountry, please consider submitting a Mountain Information Network report.

Up to 25 cm of new snow, accompanied by moderate to strong southerly wind, will likely form new storm slabs on most aspects. Unsettled conditions can bring up to 40 cm of new snow in localized areas. Under this storm snow, a thin crust is found on southerly aspects.

A robust crust, formed in early March, can be found down 50 to 100 cm. The snow above is well bonded to this crust. Below this, the snowpack is well consolidated and strong.

Saturday Night

Cloudy with 10 to 15 cm of new snow. 40 to 60 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1000 m.

Sunday

Cloudy with 5 to 15 cm of new snow. 20 to 40 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level 1000 m.

Monday

Increasing clouds in the afternoon with isolated flurries. 15 to 30 km/h west ridgetop wind. Treeline temperature -3 °C. Freezing level 800 m.

Tuesday

Mix of sun and clouds. 15 to 30 km/h southwest ridgetop wind. Treeline temperature 0 °C. Freezing level 1200 m.

More details can be found in the Mountain Weather Forecast.

• Continue to make conservative terrain choices while the storm snow settles and stabilizes.
• Avoid freshly wind-loaded terrain features.
• Be aware of the potential for loose avalanches in steep terrain where snow hasn't formed a slab.
• Avoid terrain traps such as gullies and cliffs where the consequence of any avalanche could be serious.