Avalanche Advisory for Tuckerman and Huntington Ravines
Posted: 8:41 a.m., Wednesday, January 25, 2006

Tuckerman Ravine has MODERATE and LOW avalanche danger. The Bowl, Headwall and Lip have Moderate avalanche danger. Natural avalanches are unlikely and human triggered avalanches are possible. Use caution in steeper terrain. All other forecast areas in Tuckerman have Low avalanche danger. Natural avalanches are very unlikely and human triggered avalanches are unlikely EXCEPT IN ISOLATED POCKETS. Normal caution is advised. We have temporarily stopped forecasting for the Little Headwall due to a lack of snow in that area.

Huntington Ravine has MODERATE and LOW avalanche danger. South, O'Dell, Central and Yale Gullies have Moderate avalanche danger. Natural avalanches are unlikely and human triggered avalanches are possible. Use caution in steeper terrain. All other forecast areas in Huntington have Low avalanche danger. Natural avalanches are very unlikely and human triggered avalanches are unlikely except in isolated pockets. Normal caution is advised.

Although the skies above the mountain appear to be clearing as of this morning, radar images are verifying the day's forecast. One band of moisture has already breezed through leaving 1"(2.5cm) of snow at Hermit Lake. It sure adds a nice touch but it's not quite what we were hoping for. A second band will come marching in later today and provide another 1-2"(2.5-5cm) over the course of the day. Winds are expected to stay out of the W and NW today with speeds of 10-30mph(16-48kph). These speeds may be light by Mt. Washington standards but they should be enough to transport snow off of the Summit cone and into the Ravines. Developing windslab will likely be very soft and you will need to be vigilant in your on-going evaluation. What may seem like benign powder may actually have enough cohesion to fracture and slide as a larger unit. Depending on size and location, even a soft slab can ruin your otherwise glorious trip in the hills. You should expect new slabs to be developing high on E and SE aspects. Yesterday's mild temps and light winds provided sunny aspects with a fair amount of solar gain. This may have baked some of the energy out of the existing slabs but caution still needs to be exercised. New snow may be falling on a barely detectable sun crust so bonding will be an issue. In Huntington the recent stability concerns have been in areas that receive less sun such as the bottom of O'Dell and South Gullies. Keep a heads up in all areas because even those at Low will have pockets of instability today. Interspersed with new snow is diamond hard old surface. Crampons, an ice axe and solid technique are a must in most areas on the upper part of the mountain today. Our snowpack is better described as an "icepack" and self-arrest would be very difficult to execute successfully. Use caution and be honest about your skills and mountaineering experience.

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 thin cover and varying conditions. New snow is covering long sections of water ice, deep waterbars and water channels that can grab a ski tip very quickly.

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.

Back to the Tuckerman Ravine Home Page

REí