Schneedecke

Northern San Juan

Susan HaleNorthern San Juan
Auf der Karte ansehen

Weather

Mostly sunny with scattered clouds building from the south. Chilly. Breezy. Windy near treeline or open areas (15-20mph). Winds kept most snow surfaces cold today (incoming snow will not bond well).

Snowpack

Note: Stayed near and below treeline. Only a couple of surprises today....otherwise, mostly what one would expect - facets, facets, facets, with some weak crusts on top. Surprise #1 - Crust on the W aspect was weaker than expected with large, loose facets underneath to the ground. Long, hollow chains of facets/depth hoar were hanging below these very friable MF crusts (made of well formed but sintered facets..). Thought we'd see a (little bit) stronger crust here. Surprise #2 - An E aspect with a very thin weak crust over large and loose facets to the ground. Thought the crust might be stronger here too... Found other E aspects with varying crust strengths (but generally breakable under skis). Slightest aspect change or steepness made a big difference on these easterlies... Near treeline N aspect had significant wind damage with highly variable wind-slab formation - a pocket of soft, then a pocket of supportive slab to a pocket of breakable. Not skiable - at least not by me. Northerly below TL was (surprise, surprise) generally large loose facets (except for old tired ski tracks - that were almost chewed up by the faceting process). Were able to push out a few small facet sluffs on steeper terrain. Last week's newer snow is faceted. What we could see above treeline on N - NE aspects was also wind damaged and would expect these zones to have varying depths of hard slab. S aspects below TL had strong supportive crusts. NOTE - All surfaces on most aspects were dusted with facet forms! An inch of water on a given slope would trend hazard up (example - 8" plus wind...). Watch for propagation to steeper or more heavily loaded slopes. Reminder about potential to trigger steeper slopes above you from lower angle slopes below.