Garibaldi summit

Parked at 1000m on the cheekeye fsr, was Subaru friendly. Hard overnight freeze meant fast travel but was very solid until the main Garibaldi face which catches some morning sun so warmed up. Summit just after 11 which seemed a nice time to get on top for a good ski down as things softened. Large cornice fall off hogs back ridge (?) which triggered a large slab avalanche over 1.5m deep, size 2.5. Everyone was skiing over the debris quickly as there's still a lot of overhead there, unsure of when it fell but must be the last day or two