| Posted: 8:02 a.m., Wednesday, December 19, 2007 |
Huntington Ravine has LOW avalanche danger today. Natural avalanches are very unlikely and human triggered avalanches are unlikely except in isolated pockets. Normal caution is advised.
Most areas remain at Low avalanche danger today as a result of avalanche activity, wind scouring and wind packing that occurred on Monday. There are still isolated pockets of concern in areas posted at Low, particularly in Right Gully. Don't close your avalanche eyes just because an area is posted at Low and be suspicious of soft slabs. The Lip remains at Moderate today and the Bowl and Headwall have joined it in that rating. This is because new wind loading has created some new concerns right under the Headwall ice and over into the Sluice. While we only recorded a trace of new snow, some new loading is visible and fracture lines that were crisp yesterday have filled in a bit in the Headwall and Sluice. Be aware of thin touchy slabs in areas posted at Moderate and some deeper instabilities in the Lip area.
Yesterday provided us with a good opportunity to get out and see what the last avalanche cycle did to change the landscape up here. As mentioned in yesterday's advisory, just about everything in Tuckerman Ravine avalanched during the last cycle, filling in gullies and run-outs more than I have seen in a while in December. Huntington Ravine experienced drastic changes during the storm and at one point, conditions were conducive to large avalanches. South Gully, O'Dell and Yale all ran far down into their run-outs. It is amazing to me when I see avalanche debris from Yale extending all the way down to the floor of Huntington because the wind eventually ripped all the snow out of that gully leaving only pockets of snow and nothing in it's start zone. We will be putting some photos on the web today for you to look at. Huntington became obscured in clouds by the time we were ready to start shooting photos, but we have some good ones of Tuckerman.
Another snow storm is on our doorstep! This one is going to leave the foothills and central Maine with more snow than in the mountains, but we are still going to get accumulating snow. Expect snow to begin this afternoon and last through the day tomorrow. The exact track of this system seems a bit squirrelly still, so it is hard to pin down how much snow we will get. Right now the forecast is calling for 3 to 6" (7 to 15 cm) in the mountains and 6 to 9" (15 to 23 cm) in the foothills. Areas to our north are calling for only a couple inches of snow. Summit winds will shift to the south tonight and be out of the east tomorrow. If you plan on being in avalanche terrain tomorrow, expect increasing avalanche danger and check tomorrow's advisory to get more updated information on this system. Feeling like a spoiled New Englander with all of this snow? Wait until Sunday and we will all be reminded of the joys of New England weather. While things have time to change, right now it looks like we are in for a warm storm for the second part of the weekend. I can't write curse words in the advisory, but r**n is not out of the question.
The John Sherburne Ski Trail is open with continuous snow from top to bottom, however this trail has also been hammered by the wind. THE LION HEAD WINTER ROUTE IS NOW OPEN. This is a steep and challenging route for mountaineers. Crampons, an ice axe and the ability to properly use this equipment are recommended for safe travel on this route.
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Avalanche Advisory Archives.
United States Avalanche Danger Descriptions.
Échelle Canadienne de risque d’avalanche.
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