Avalanche Forecast
Regions: Coquihalla, Harrison-Fraser, Manning, Skagit.
Small wind slabs may be forming at upper elevations
Verify that conditions are safe before committing to steep slopes
Confidence
Moderate
Avalanche Summary
No new avalanches have been reported.
Observations have been extremely limited in this region. It's a good idea to frequently verify if conditions match the bulletin and adjust your terrain choice accordingly.
Please share to the Mountain Information Network if you head into the backcountry.
Snowpack Summary
Snowfall of 5 to 15 cm is expected to fall at upper elevations overnight and through Sunday. This new snow may build small wind slabs on lee north through easterly slopes. Otherwise, a typical spring diurnal cycle is underway. Warm temperatures during the daytime melt the upper snowpack, making it moist or wet. Cooling at night then usually forms a hard crust at upper elevations. Lower elevations may not refreeze overnight and are melting out rapidly.
The snowpack is generally well-settled and strong, although dormant weak layers may still exist in some areas.
Weather Summary
Saturday Night
Increasing cloud with possible flurries to 5 cm above 1500 m, rain below. 30 km/h southwest ridgetop wind. Treeline temperature low -3 °C. Freezing level 1800 m, falling to 1400 m.
Sunday
Cloudy with 5 to 15 cm of new snow above 1400 m, rain below. 25 to 35 km/h southwest ridgetop wind. Treeline temperature -2 °C. Freezing level rising to 1500 m.
Monday
Mostly cloudy with 1 to 5 cm of snow above 1400 m, rain below. 10 to 20 km/h west ridgetop wind. Treeline temperature -2 °C. Freezing level rising to 1500 m.
Tuesday
Mostly sunny. 5 to 10 km/h variable ridgetop wind. Treeline temperature +1 °C. Freezing level rising to 1900 m.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
- Avalanche activity is unlikely when a thick melt-freeze crust is present on the snow surface.
- Cornices often break further back than expected; give them a wide berth when traveling on ridgetops.
Avalanche Problems
Wind Slabs
Fresh wind slabs may form on lee slopes during periods of snowfall on Sunday. Check how well the new snow is bonding to the underlying crust before entering comitting terrain.
Aspects: North, North East, East.
Elevations: Alpine, Treeline.
Likelihood: Possible - Likely
Expected Size: 1 - 2