Another “inside slider” storm with little moisture made its way down the Sierra Sunday night dropping 3-4” of light new snow. The cold wind that accompanied this storm seemed to have only isolated effects on the new snow by Monday. Yesterday afternoon, however, as winds increased to ideal snow transport speeds at upper elevations, sensitive wind slabs formed on NE facing features in the Mammoth and Virginia Lakes areas. Light snow showers yesterday dropped an additional 1” or so for the winds to play with. With limited observations coming in to prove otherwise, wind slabs are expected to have formed on favored alpine terrain features elsewhere in the forecast zone as well.
Winds dropped off to light early this morning, but cold temperatures will slow the bonding of recently formed slabs and they may still be reactive or even touchy to human triggers today.
If the winds pick up again this evening with the chance of additional snowfall we may see another round of wind loading before tomorrow.