Post-storm conditions warrant caution if traveling above treeline. Assess for pockets of wind-drifted snow on steep, leeward-facing aspects. Today's increase in temperature and sun may destabilize snow surfaces below treeline. Monitor for signs of instability and identify terrain traps to aid in safer travel.
If you intend to travel above treeline on northern aspects and in high-stakes terrain, be prepared to assess for wind-drifted snow. Winds have favored a south and southeast direction over the past 72 hours, with speeds averaging 10 mph. Drifts will likely be isolated to leeward catchment features and relatively stubborn in nature.
Today, the sun and warm temperatures look to grace us with their presence. If these two elements verify, they pose the risk for surfaces to break down and become less stable. Areas below treeline hold the greatest risk for this problem, having received more water weight and warmer temperatures. A solid overnight freeze and a pre-existing surface crust will make it challenging for the snow to soften at the mid and upper elevations. Steep solar lit aspects, slopes beneath large rock features, and areas that hold moist boot cuff deep snow are places where this problem is most likely. Even small amounts of wet snow can gouge down and entrain more snow as it slides. Avoid areas of extreme terrain that have been subjected to warming.
Wet-loose snow easy to initiate on steep convex terrain below treeline
Photo: Eric Falconer
It's been a wet and wild past few days for Mount Shasta and the surrounding area. A degree of uncertainty remains for conditions on the upper mountain after the substantial weather event that brought nearly six inches of water and over 30 inches of snow to the forecast area. It's always a good to start by testing the water before diving straight in.
Since January 20th, one avalanche has been reported. If you see anything noteworthy, please feel free to drop us an observation. Your eyes and ears go a long way.
Mount Shasta has received 100 inches of snowfall thus far, with the Eddy Mountains reaching over 60 inches. This is a great achievement and we only hope for it to continue.
