Avalanche Advisory for Tuckerman and Huntington Ravines

Posted: 8:35a.m., Friday, May 21, 2010

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Tuckerman Ravine has Low avalanche danger. Natural avalanches are very unlikely and human triggered avalanches are unlikely except in isolated pockets. Normal caution is advised. A General Advisory is currently issued for Huntington Ravine. We are done issuing daily avalanche forecasts for Huntington for the remainder of the season. You will need to do your own snow stability assessments when using avalanche terrain.

Well it’s now been several days since the Ravine has been below freezing and the snowpack is receding at a rate comparable to my friend Greg’s hair line. And even though you probably don’t know him, take my word for it that it’s going fast. The amount of bald rock on the Headwall is quite substantial compared to what was there just a few weeks ago. There appears to be a stretch of sunny and warm weather approaching, so expect the pace to keep up for a while. This melting continues to keep CREVASSES and UNDERMINED SNOW in the front of our minds as the most significant hazards you’ll face if you come up to ski. You’ll do well avoiding the worst areas by staying out of the center of the bowl. Be particularly careful as you approach the edge of the snow near where it meets the cliffs; the edges often become undercut and prone to collapsing. It’s also a good idea at this time of the year to stay aware of what’s going on above and around you and have a plan for what you’ll do when something falls from up above. Most of the substantial ice has already fallen, but there are always other things that can fall in your direction such as loose rocks, dropped snowboards, or tumbling skiers. And speaking of tumbling skiers, think about what lies below you as you choose your line. Falling fast into a crevasse or pile of talus is a rough way to end your ski season!

The Tuckerman Ravine Trail is CLOSED TO ALL USE from Lunch Rocks to the junction with the Alpine Garden Trail. This includes the Lip area and the section of the hiking trail from the floor of the Ravine through the top of the Headwall. Only this section of the trail is closed. This annual closure is due to the magnitude of crevasses and undermining that develop in this area during the spring melt-out. A fall in this area would have severe consequences. The Lion Head Summer Trail is open and provides an alternate route to the summit.

I’ll be heading up into the Bowl to day with a camera in hand and hopefully posting pictures on our website this afternoon. A new Weekend Update will also be posted this afternoon, so if you are interested in exactly how much snow is left or want to hear the latest thoughts on weather check back in then. If you’re having difficulties getting the current avalanche advisory or weekend update, please accept my apologies. Our host server crashed a couple weeks ago and we have been unable to resolve the problems. We are attempting to limp through the next couple weekends. You can always get the latest avalanche advisory by calling (603) 466-2713 extension 4.

Please Remember:
Natural events such as avalanches are impossible to accurately predict in every instance. This Advisory is one tool to help you make your own decisions in avalanche terrain. It should be used along with safe travel techniques, snow stability assessments, an understanding of weather’s effect on the snowpack, and proficiency in avalanche rescue.
You should obtain the latest weather forecast before heading into the mountains. Anticipate a changing avalanche danger when actual weather differs from the higher summits forecast.
For more information, contact the U.S. Forest Service Snow Rangers, the Mt. Washington Volunteer Ski Patrol, or the AMC at the Pinkham Notch Visitor Center or Hermit Lake Shelters. A new avalanche advisory will be issued tomorrow and this advisory expires at midnight.

Jeff Lane, Snow Ranger
USDA Forest Service
White Mountain National Forest
(603) 466-2713 TTY (603) 466-2856