Large natural avalanche in northern Bridgers

"... while touring in the Northern Bridgers, my partner and I noticed a very large avalanche that occurred on a North face in "October Bowl" just to the south of Hardscrabble Pk.  We didn't witness it and are unsure of a t trigger but we came in contact with all parties believed to be out there and assume it occurred naturally early this morning from heavy wind-l loading The crown seemed to be 2-3' deep but stepped down to the ground about 200' below the crown. The s slide was about 400' in width and ran about 1,000' and we assumed classifications of R3.5 and D3."