9:17 a.m., Monday, December 16, 2002 TUCKERMAN RAVINE HAS MODERATE AND CONSIDERABLE AVALANCHE DANGER. The Lower Snowfields and the Little Headwall have Moderate avalanche danger. Natural avalanches are unlikley and human triggered avalanche are possible. Be cautious in steeper terrain. All other areas in Tuckerman have Considerable avalanche danger. Natural avalanches are possible and human triggered avalanches are probable on steep snow covered open slopes and gullies. Be increasingly cautious in steeper terrain. HUNTINGTON RAVINE HAS MODERATE AVALANCHE DANGER. Natural avalanches are unlikley and human triggered avalanche are possible. Be cautious in steeper terrain. The summit and Hermit Lake received approximately 1.5 inches (4 cm) of light density snow in the past 24 hours. Light snow continues to fall and is forecasted to continue into the afternoon. Winds are expected to shift from the NW to the NE and increase through the day, so continued light loading will occur. The Ravines have been socked in with clouds and blowing snow for days now. I suspect we will once again see some dramatic snow cover changes from earlier in the week. We've pick up around 10 inches (25 cm) over the past 5 days with WNW and NW winds prevailing. These 'Ravine loading' winds with snow is ideal for piling it in on E, SE, and S aspects. The deepest area of snow deposition in Tuckerman is traditionally right next to 'Lunch Rocks'and already has at least 35-40 feet (12-14 m) on the ground, if not more! A 15 minute walk down to our Hermit Lake manual snow plot shows only 33 inches (85 cm). This is a great example of what winds can do to move snow into strong lee pockets. In this situation we have over a foot (30 cm) for every inch (2.5 cm)of snow at Hermit Lake. Keep this in mind today and in the future when we 'only' get an inch or two (2.5-5 cm) overnight. Some areas may have been loaded with up to a foot or two (30-60 cm) of new slab. The forecasted snow showers with winds shifting from the NW to the NE will continue loading both Ravines. Loading will be predominately on SE and S facing aspects, but expect the cross loading of others. So expect an increasing avalanche danger as the day continues. Variable conditions DO exist so don't be lulled into thinking stability is wide spread just because you are on a thick crust where you're standing. 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 mountain weather's effect on the snowpack, and avalanche rescue. THE WINTER LION HEAD ROUTE IS NOW OPEN. THE ROUTE LEAVES FROM THE HUNTINGTON FIRE ROAD AND HAS ORANGE SIGNS STARTING ON THE TUCKERMAN RAVINE TRAIL AT ROUGHLY THE 1.8 MILE MARK. IT IS STEEP AND CHALLENGING. CRAMPONS, AN ICE AXE, AND THE ABILITY TO USE THEM WITH SKILL ARE REQUIRED FOR SAFE TRAVEL. The John Sherburne ski trail is coming along slowly and improving. But, waterbars, rocks, and brush will challenge even the best skier for a safe and pleasurable trip down. THE BEST HOLIDAY GIFT YOU CAN GET YOUR BACKCOUNTRY LOVED ONE TO EXPRESS CARING AND CONCERN IS THE AVALANCHE BEACON, PROBE, AND SHOVEL. TOO EXPENSIVE? THINK OF THE CONSEQUENCES OR SPLIT THE GIFT WITH ANOTHER RELATIVE OR FRIEND. YOU'LL NEVER REGRET GIVING IT, ONLY REGRET NOT GIVING IT. PLEASE REMEMBER: o Any new precipitation may increase the avalanche danger, this includes wind transported snow. o Obtain latest weather forecast before starting out. o For more information, contact the U.S. Forest Service Snow Rangers: AMC at Pinkham Notch Visitor Center or Hermit Lake Shelters. o This avalanche bulletin will expire at midnight. Christopher Joosen, Snow Ranger USDA Forest Service White Mountain National Forest