Whumpfing at Mt Seymour

<p>Snowshoe AST course for canada west mountain school. Several slabs noted on the mid Feb rain crust above de penciler lake. ECTP 24 dn 70 on FC BTL. Small facets present on this crust and causing localized whumpfing in the flats. Beautiful day! Heavy wind affect in exposed locations, mod to strong N winds most of the day.</p>

Avalanche Conditions

30cm + of new snow, or significant drifting, or rain in the last 48 hours.

Slab avalanches today or yesterday.

Whumpfing or drum-like sounds or shooting cracks.