double-double seeking, snow-chasing, short-cutting, vertical feet collector
Posted - 03/05/2004 : 8:48 PM
| North Shore Avalanche Advisory
Reporting Area: The North Shore Mountains between Mount Seymour Provincial Park and Cypress Provincial Park.
As of: March 5th, 2004 - 6:30pm
AVALANCHE HAZARD: HIGH
(Natural and human triggered avalanches likely.)
WEATHER FORECAST: (1000M LEVEL)
Tonight..Cloudy periods. A few flurries. Low minus 2. Snowfall accumulation 2 to 5 cm. Freezing level 800 metres. Winds west 60 to 80 km/h diminishing to 40 to 60 overnight.
Saturday..Increasing cloudiness. Snow developing in the afternoon. Low near zero. Snowfall accumulation 15 to 20 cm. Freezing
level 1000 metres. Winds west 30 to 50 km/h becoming south 40 to 60 in the afternoon.
Sunday..Rain. Rainfall amounts 25 to 35 mm. Freezing level rising
to 2300 metres.
High winds continue to move the recent storm snow. Lee slopes (usually north- and east-facing) have seen accumulations of up to 60cm, while windward areas have been scoured. Snowpack stability tests are producing easy and very easy shears in the lee areas, associated with layers of graupel in the storm snow and the March 3rd sun crust. Natural avalanches to size 2 (large enough to bury a person) are occurring on steeper lee slopes, releasing on the March 3rd crust, down about 40-60cm. Controlled skier tests are also producing similar results on a consistent basis.
The above rating is an assessment of the avalanche conditions as of the posted date. Avalanche hazard is subject to sudden change due to changing weather conditions and variation over terrain. The rating is provided to assist backcountry travelers in making their own educated decision as to whether travel is advisable. Individuals should make their own assessments before travelling into the backcountry.
Check the Canadian Avalanche Association website for an avalanche forecast of the south coast region at www.avalanche.ca/weather/bulletins/index.html.
BC Parks / Mount Seymour Resorts / Grouse Mountain /
Cypress Mountain / Canada West Mountain School /
GVRD / North Shore Rescue