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</style><p class="p_CC664AAA"><span class="s_3FE45715">Up to 35 cm of new snow sits on old wind slabs and adds to the recent storm slab which overlies a </span><a id='GoToAdded' href="http://www.fsavalanche.org/Encyclopedia/surface_hoar.htm" target="_blank"><span class="s_B5813F7D">surface hoar</span></a><span class="s_3FE45715"> and a sun crust layer that developed at the beginning of February. This layer continues to be reactive. Deeper down 50-80 cm sit a </span><a id='GoToAdded' href="http://www.fsavalanche.org/Encyclopedia.aspx" target="_blank"><span class="s_B5813F7D">persistent weak </span></a><span class="s_3FE45715">interface that was buried around January 23rd. This persistent slab has been reactive and easily triggered over the past few days, especially from solar aspects and at treeline and below treeline over steeper convex slopes.</span></p><p class="p_CC664AAA"><a id='GoToAdded' href="http://www.fsavalanche.org/Encyclopedia/wind_slab.htm" target="_blank"><span class="s_B5813F7D">Wind slabs</span></a><span class="s_3FE45715"> continue to develop and stiffen on lee slopes and behind terrain features like ridgelines and ribs. You may encounter some reverse loading with winds switching from the NW, watch for unsuspecting areas of new wind slab.</span></p><p class="p_CC664AAA"><span class="s_3FE45715">The mid-pack is generally well settled and strong and the snowpack depths at treeline are near 220 cm. Watch the duration and intensity of the sun in your local riding area; it may weaken the upper snowpack. Cornices loom and threaten slopes below.</span></p><p class="p_CC664AAA"><span class="s_3FE45715"> </span></p><p class="p_CC664AAA"><span class="s_3FE45715"> </span></p><p class="p_CC664AAA"><span class="s_3FE45715"> </span></p>