| Posted: 8:59 a.m., Thursday, January 15, 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.
It is a clear cold morning on Mt. Washington. Evidence of recent avalanche activity is abundant in Tuckerman Ravine today. New fracture lines are present high on the Headwall near the horizon, in the Lip, the Sluice, and on the west side of Right Gully. While these fracture lines are still clear, new snow has been deposited since these avalanches occured so expect unstable snow in these areas. Wind loading has subsided so we feel that human triggered avalanches are the biggest concern. Forecast areas have pockets of newly deposited, cold wind slab, so don't tune out to what the snow may be telling you. Expect these instabilities to linger due to the very cold temperatures forecasted for the next couple of days. These cold temperatures will inhibit the bonding process and allow the snow's elastic energy to stick around.
The summit of Mount Washington hit a new record low for the day yesterday at -43 C (-45 F). Speaking of cold temperatures, we are still stuck with that "crisp" Arctic air. A low pressure system will move up into the Canadian Maritimes today which should draw even colder air into the region tonight along with high winds. It looks like tomorrow will be another good day to be an arm chair mountaineer. The good news is that the weekend looks as though it will be more tolerable.
The John Sherburne ski trail has variable conditions. Expect areas of water ice, some blowouts, abrupt water bars and open holes. 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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