March 3, 2023
March 6, 2023
Zone or Region:
Challis Area and Lost Rivers
Twinn Bridges Creek
Did you observe any avalanches? Yes
Size 3: Could bury and destroy a car, damage a truck, destroy a wood frame house, or break a few trees
Observed from a distance, crown probably 3-4’ thick, 250-300’ across, ran full length of drainage.
Did you see shooting cracks? Yes, Isolated
Did you experience collapsing or whumpfing? Yes, Widespread
Casual touring, aware of of the danger and traveled cautiously. Widespread whomping on moderate terrain e.g. 20-25 degrees, whomping with fracturing on 30 degree+. Lots of wind blown slabs. Traveled on ridges where it was wind impacted. Lower elevations - less wind impacted- leeward sides skied well 25degrees or less. Snow depths ranged from 2-3’ on average.