Avalanche Advisory for Tuckerman and Huntington Ravines
Posted: 8:59 a.m., Thursday, January 15, 2004

Tuckerman Ravine currently has MODERATE and LOW avalanche danger. Right Gully, The Bowl, Lip and Headwall 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. All other areas in Tuckerman Ravine have Low avalanche danger. Natural avalanches are very unlikely and human triggered avalanches are unlikely except in isolated pockets. Normal caution is advised. These isolated pockets do exist so keep your avalanche eyes open in all areas today.

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.

It is a clear cold morning on Mt. Washington. Evidence of recent avalanche activity is abundant in Tuckerman Ravine today. New fracture lines are present high on the Headwall near the horizon, in the Lip, the Sluice, and on the west side of Right Gully. While these fracture lines are still clear, new snow has been deposited since these avalanches occured so expect unstable snow in these areas. Wind loading has subsided so we feel that human triggered avalanches are the biggest concern. Forecast areas have pockets of newly deposited, cold wind slab, so don't tune out to what the snow may be telling you. Expect these instabilities to linger due to the very cold temperatures forecasted for the next couple of days. These cold temperatures will inhibit the bonding process and allow the snow's elastic energy to stick around.

The summit of Mount Washington hit a new record low for the day yesterday at -43 C (-45 F). Speaking of cold temperatures, we are still stuck with that "crisp" Arctic air. A low pressure system will move up into the Canadian Maritimes today which should draw even colder air into the region tonight along with high winds. It looks like tomorrow will be another good day to be an arm chair mountaineer. The good news is that the weekend looks as though it will be more tolerable.

The John Sherburne ski trail has variable conditions. Expect areas of water ice, some blowouts, abrupt water bars and open holes. 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.****

Brian Johnston, 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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