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.

Another batch of cold air is once again on the way. The temperature is expected to drop through the day potentially bringing the summit to -26 C (-15 F) by late in the day. This will come with a couple bands of precipitation. The first shot of moisture is expected this morning but is not forecasted to bring much in the way of accumulation. As the afternoon arrives, snow showers and squalls are anticipated with 7.5 cm (3 in) or more in the mountains . SW, and potentially W, winds will load the Ravines later today with new snow creating wind slabs. This process will increase the avalanche danger. Watch the weather closely and expect an increasing avalanche danger to coincide directly to the amount of new precipitation and the rate of loading. Squalls may bring new loading into lee pockets quickly. Also be prepared for obscured conditions as gusty winds and snow will limit depth of field and visibility. I believe that if the weather forecast plays out areas will go up a rating late in the day possibly close to twilight. So "Low" areas may become "Moderate" and current "Moderate" areas may reach "Considerable". Arctic air is expected through the weekend so be prepared for full Mt. Washington winter conditions.

The avalanche that occured in the Lip was scrutinized yesterday with very interesting results. As was discussed in the advisory on Monday we believed the area below the Lip and Headwall ice would be on the upper end of Considerable leaning towards High late and into Tuesday. Based on previous observations we also felt that any new avalanche activity would step down to the deeper weak layer above the rain crust from Jan. 3rd. This appears to be exactly what happened. The areas below the Headwall ice and the Lip avalanched between late Monday and Tuesday afternoon and stepped down several times ultimately ripping out at the rain crust. The main crown line that stepped down to the rain crust was 130 meters in length and an average of 70 cm deep with a maximum depth of 180 cm. The toe of the debris is approximately 375-400 meters from the crown line on the Lip.

The John Sherburne ski trail has variable conditions. Expect areas of water ice 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.