| Posted: 8:29 a.m., Saturday, January 31, 2004 |
Huntington Ravine has LOW avalanche danger. Natural avalanches are very unlikely and human triggered avalanches are unlikely except in isolated pockets. Normal caution is advised.
Snow showers are in the forecast for the higher summits today with about 2.5 cm (1") of accumulation expected. Winds have been out of the WNW for a couple of days now and have blown some snow into strong lee areas. Keep your eyes out for newly deposited wind slabs and approach them with caution. The areas posted at Moderate have been at that rating for a week now. You may be wondering why we feel that these areas are still Moderate. Well, here is what we are thinking: These areas are all in the lee of NW and WNW winds and had wind slabs deposited on them a while ago. While many areas experienced scouring from high NW winds earlier in the week, these slabs remained smooth and consistent. Time has allowed for some bonding to occur and we do feel that the slabs have gained some strength, however, recent cold temperatures haven't allowed this to occur at a rapid rate. Avalanche activity that has occured on these slopes this month has had the tendancy to step down into deeper slabs and resulted in large avalanches. While we are not as concerned with natural activity, we do have concerns that if a person were to ski or climb in the areas posted at Moderate they could trigger an avalanche in newer wind slab that may step down and cause a significant avalanche. Today's new snow paired with the small amounts of snow that have been blowing into lee areas through the week could cause an increase in instabilities in the newer wind slabs. So, don't let your guard down in avalanche terrain. While we haven't had a lot of new snow, there are still areas that demand respect.
The John Sherburne ski trail has variable conditions. Expect areas of water ice, emerging rocks and abrupt water bars. Be prepared for sudden changes in the trail.
THE LION HEAD WINTER ROUTE IS OPEN. This is a steep and challenging route. Ice axe, crampons, and the skill to use them well are necessary for safe travel. Remember, it is always easier to go up than come down.
AS ALWAYS, THIS ADVISORY IS ONE MORE TOOL TO HELP YOU MAKE YOUR OWN DECISIONS IN AVALANCHE TERRAIN. It should be used along with your own snow stability assessments, knowledge of safe travel techniques, skill in reading mountain weather's effect on the snowpack, and avalanche rescue.
| Please Remember: | ||
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Avalanche Advisory Archives.
United States Avalanche Danger Descriptions.
Échelle Canadienne de risque d’avalanche.
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