^ Yup, that Patrol avy work took place Friday morning, 1/5/17.
12’ crown from avalanche control work by Mammoth Mountain Ski Patrol on Friday, 1/6/17. Guest skier (assistant hand charge-thrower) Glen Plake. Photo credit by permission:Brett Reed
Eastern Sierra Avalanche Center site:
Other - explain below
More than 10 ft
More detailed information about the avalanche:
Huge crowns resulting from explosive control measures on Mammoth Mountain this morning, see attached photos. Over 12' tall crowns! One small hand charge resulted in half of the upper mountain releasing (all of the drop outs and wipe outs through the hump). Of note, some of these slopes had been shot with heavy artilery (40lb warheads) and didn't fail. A 2lb handcharge in the sweet spot is what caused the entire release. Stepped down to late november raincrust. Also 4-6ft crowns in the chair 9 area.
I'll have a piece on avalanche safety in my next Sierra Lady About Town blog on Howard's subscription weather letter next Thursday and will be using Brett's photo with permission.
It's pouring rain here in town at 7,832' with soggy snow in the driveway and on our front porch. It's 40 degrees out. Seeing lightning and hearing thunder...wow!