The general avalanche hazard is CONIDERABLE above 7,500 feet, and MODERATE below 7,500 feet. Dangerous avalanche conditions exist. Over the past three days, around 18 inches of new snow containing over two inches of water has fallen. Westerly ridgetop winds have accompanied this snowfall creating dense surface slabs. Skiers and riders are likely to trigger these large slides in steep, avalanche-prone terrain, and natural activity is possible. Some potential may remain for these slabs to step down to a buried layer of surface hoar which formed in mid-January.
Recently formed surface slabs lie upon slick sun crusts and faceted snow. Temperatures warmed and densities increased over the past three days creating upside-down conditions. Above 7,500 feet, backcountry travelers are likely to trigger these slabs to depths of one to two feet. Below 7,500 feet, similar slides are possible, but with depths of six to twelve inches.
( Discussion is generated from the previous day's afternoon forecast. )The National Weather Service has issued a Winter Storm Warning, which is in effect until 11 AM on Wednesday. Moderate to heavy snowfall will continue overnight before beginning to taper during the morning hours. Light, scattered snow showers will remain possible during the remainder of the day. Overnight lows in the mountains will be in the upper teens before rising a few degrees during the day. Westerly ridgetop winds will range from 10 to 20 miles per hour.The general avalanche hazard is expected to be CONSIDERABLE on Wednesday. Recently developed wind slabs, formed by southwesterly to westerly ridgetop winds, have increased in depth and volume over the last two days. These slabs, which range from one to two feet deep, lie upon firm crusts and weak, faceted snow. On Wednesday, skiers and riders are likely to trigger these slabs, and they might also release naturally. Due to the density of these slabs, the consequences of being caught are higher than typical slabs of these depths.
