| Posted: 8:33 a.m., Thursday, December 13, 2007 |
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.
Extreme winds create extreme results! Tuckerman has seen quite a change in the past 24-48 hours. As Jeff said this morning "the Ravine went through a quick coming of age as it to bed a boy and woke up a man". Snowfields and gullies filled in dramatically in multiple locations as about 8" (20cm) of snow over 2 days finished with winds gusting to 117 mph (190kph) from the WNW yesterday afternoon. Evidence of avalanche activity can be seen in Dodge's Drop, the lower left side of the Bowl, and perhaps Left Gully. Since this cycle occurred, probably around late morning on Wednesday, we have received heavy scouring and wind packing in most areas in both Ravines. This has generated increased stability in all areas compared to yesterday. The greatest concern however is the typical Tuckerman locations that are in the strong lee of NW to W winds, namely The Lip and high under the main headwall ice particularly on the northern side (climber's right) approaching the Lip. This is the reasoning for the Moderate posting in these areas. Saying this you will find increased stability down low under the Chute and the Southern side of the Bowl. Keep in mind that you will be in the run out of instabilities above these locations. We are now being set up for more avalanche activity in the future as our bed surfaces have grown considerably. This will be something to think about right away as we will pick up some snow overnight and again Friday although accumulations will remain light. Saturday night and Sunday are much different as it currently appears we will get a pummeling as a major winter storm bears down on northern New England. This will be a big discussion point in the advisory over the next 2 days as well as the "Weekend Update" Friday evening. So stay tuned!!
By now you've probably waxed your skis, sharpened your ice axes, refreshed your knowledge of stability assessment, and practiced your rescue skills. No matter how experienced we all are these skills fade with time. Now is the time to hone those skills. Your lives depend on it! We have all the avalanche courses offered in the valley this winter on our website, tuckerman.org.
The John Sherburne Ski Trail is open, with continuous snow from top to bottom. Many large waterbars and exposed rocks make this a challenging early season ski. The Lion Head Summer Trail is currently open. The change to the Winter Route will occur when snow conditions warrant. We'll let you know of the change when it takes place.
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Avalanche Advisory Archives.
United States Avalanche Danger Descriptions.
Échelle Canadienne de risque d’avalanche.
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