Avalanche Advisory for Tuckerman and Huntington Ravines
Posted: 8:52 a.m., Sunday, January 29, 2006

Tuckerman Ravine has LOW and MODERATE avalanche danger. The Lower Snowfields and Hillman’s Highway have Low avalanche danger. Natural avalanches are very unlikely and human triggered avalanches are unlikely except in isolated pockets. Normal caution is advised. All other forecast areas in Tuckerman have Moderate avalanche danger. Natural avalanches are unlikely and human triggered avalanches are possible. Use caution in steeper terrain. We have temporarily stopped forecasting for the Little Headwall due to a lack of snow but are close to resuming forecasts for this area.

Huntington Ravine has LOW avalanche danger. Natural avalanches are very unlikely and human triggered avalanches are unlikely except in isolated pockets.

The strong winds are beginning to subside after pummeling the mountain for two days straight. Clouds are building and we expect to see light snow showers start sometime this afternoon. Heavier snow will fall overnight but its effect on stability will be manifested tomorrow, and today’s forecast is based primarily on our current conditions. The recent high winds out of the W & NW did a wonderful job of stripping snow from the Summit Cone and dropping it onto Tuckerman’s E through S aspects. Many of these areas avalanched during the beginning of the weather event and then reloaded with new snow. Fracture lines have been concealed and these slopes are now waiting anxiously for a human trigger. The Lip and the abutting areas in the Sluice and Headwall are on the upper end of the Moderate rating today and provide the most concern. These areas picked up the most new snow and have proved their ability to generate big slides. The potential for a person to trigger an avalanche is higher here than anywhere else. New slabs are sitting on top of a old slick rain crust in many areas while this crust is exposed in others, especially in Huntington. Where exposed it presents a concern for travelers who may need to stop a sliding fall. The reason for this is because self-arrest on this surface is VERY difficult. It makes for good climbing conditions but awful stopping conditions. Be ready with crampons, an ice axe and solid technique if you plan on traveling on the upper parts of the mountain today.

The Lion Head Winter Route is open. Mountaineering skills and equipment are required for safe travel on this route.

The Sherburne Ski Trail is open with varying conditions. Expect slush, dirt, long sections of water ice, deep waterbars and water channels that can grab a ski tip very quickly. Afternoon snow may disguise some of these hazards.

Please Remember:
•   • It is impossible to accurately predict natural events, such as avalanches, 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 National Weather Service forecast.
 
•   • For more information, contact the U.S. Forest Service Snow Rangers, the AMC at Pinkham Notch Visitor Center or Hermit Lake Shelters, or the HMC caretaker at the Harvard Cabin. This avalanche advisory expires at midnight.

Justin Preisendorfer, Snow Ranger
USDA Forest Service
White Mountain National Forest
(603) 466-2713 TTY (603) 466-2856
 
This is the Official Tuckerman Ravine website.  Occasionally the remoteness of Tuckerman Ravine, weather, or communication problems prevent the website from being updated immediately.  Check the date, and if it is not the most recent, you can also call the National Forest Service's 24 hour avalanche hotline at (603) 466-2713 (ext. 4)

Avalanche Advisory Archives.

United States Avalanche Danger Descriptions.

Échelle Canadienne de risque d’avalanche.

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