Avalanche Forecast
Issued: Jan 26th, 2013 9:31AM
The alpine rating is Storm Slabs and Persistent Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeSummary
Confidence
Fair - Due to variable snowpack conditions
Weather Forecast
Next active system (aka storm) is not expected until Monday and is likely to arrive with lots of wind. Tuesday may be cold and dry (if you're under the arctic air) or warmer with more snow (if you're south of the arctic front).Overnight & Sunday: WINDÂ West moderate to strong, TEMPERATURE around -10 C near treeline with freezing level to 600m possible, PRECIPITATION less than 10 cm of new snow possible.Monday: WIND NW moderate to strong, PRECIP 20 to 25 cm, TEMP -5 C but freezing level could climb again to 700m ahead of the cold frontTuesday: colder with -15 near treeline and below freezing at all elevations, light wind, and another 5 - 10 cm of snow
Avalanche Summary
No new avalanches reported from the first few sets of observations Saturday. Loose snow slides and soft slabs are running quite far and fast on the sugary facets the storm snow covers. Most reports were for small avalanches (to size 1.5) from steep terrain.
Snowpack Summary
Storm snow accumulations over the past few days are generally around 40 to 50 cm. This snow remained quite powdery & uncohesive on Friday but is starting to settle into a soft slab. That suggests the snowpack is gaining strength in most terrain, however it could change the avalanche character from relatively harmless loose sluffs to more dangers slab avalanches. The new snow covers a crust on steep S aspects and a patchy surface hoar layer on shady sheltered slopes at treeline and below. The early January surface hoar layer is down 70-90 cm. In the southern Monashees a freezing rain crust was reported on the surface Friday.
Problems
Storm Slabs
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Persistent Slabs
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Jan 27th, 2013 2:00PM