Avalanche Advisory for Tuckerman and Huntington Ravines
Posted: 7:59 a.m., Thursday, January 29, 2004

Tuckerman Ravine has LOW and MODERATE avalanche danger. Hillman's Highway, the Little Headwall, the Lower Snowfields and Left Gully 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 areas in Tuckerman Ravine have Moderate avalanche danger. Natural avalanches are unlikely and human triggered avalanches are possible. Unstable slabs are possible in steep terrain. Use caution in steeper terrain.

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.

Brisk weather conditions will prevail today in the higher mountains with snow showers likely to bring a bit of precipitation. At 7am the summit had a temperature of -23C (-9F)with winds from the WNW at 120kph (76mph). The forecast expects the temperatures to rise a bit with winds anticipated from the NW at 80-160kph (50 to 100mph). With this broad wind forecast you should look forward to quite gusty conditions. Snow showers may bring a 5cm (2in) of low density snow to the mountains. As long as high winds remain I think most areas will be blown clean to old surfaces except strong lee areas protected by WNW and NW winds. These lee areas would be predominately ESE and SE aspects, but pay attention to cross loading potentials. These aspects are still the areas of greatest concern due to previous loading on the northern side of the Tuckerman, namely the Headwall, Lip, Sluice, and Right Gully, have the most instability. New snow may increase the avalanche danger later in the day so watch precipitation amounts closely and change your plans accordingly. Snow showers are expected to occur on and off into the middle of the weekend before clear skies are expected to return. So be prepared for some changing avalanche conditions over the next few days.

The John Sherburne ski trail has variable conditions. Expect areas of water ice, emerging rocks and abrupt water bars. Be prepared for sudden changes in the trail.

THE LION HEAD WINTER ROUTE IS OPEN. This is a steep and challenging route. Ice axe, crampons, and the skill to use them well are necessary for safe travel. Remember, it is always easier to go up than come down.

AS ALWAYS, THIS ADVISORY IS ONE MORE TOOL TO HELP YOU MAKE YOUR OWN DECISIONS IN AVALANCHE TERRAIN. It should be used along with your own snow stability assessments, knowledge of safe travel techniques, skill in reading mountain weather's effect on the snowpack, and avalanche rescue.

Please Remember:
•   ****Any new precipitation may increase the avalanche danger, this includes wind transported snow. ****Obtain the latest weather forecast before starting out. ****For more information, contact any of the following: U.S. Forest Service Snow Rangers, AMC at the Pinkham Notch Visitor Center, AMC at the Hermit Lake Shelters, HMC at the Harvard Cabin. ****This avalanche advisory will expire at midnight.****

Christopher Joosen, 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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