GNFAC Avalanche Advisory for Fri Mar 6, 2015
Good morning. This is Mark Staples with the Gallatin National Forest Avalanche Advisory issued on Friday, March 6, at 7:30 a.m. Grizzly Outfitters in partnership with the Friends of the Avalanche Center sponsors today’s advisory. This advisory does not apply to operating ski areas.
This morning temperatures were almost 10 degrees warmer than yesterday morning. Temperatures in most places were near 20 degrees F and ridgetop winds were blowing 20-30 mph from the NW in some locations and SW in others. Winds and temperatures were a little calmer and cooler near West Yellowstone and Cooke City. Today will be similar to yesterday but warmer. Temperatures will be in the 30s and 40s F, and winds should blow 20-30 mph at ridgetops mostly from the W and NW.
Bridger Range Madison Range Gallatin Range
Lionhead Area near West Yellowstone Cooke City
Today’s avalanche problem is
- One was
triggeredin Wyoming Bowl near Big Sky on Wednesday (photo1, photo2).This one was notable for how wide it broke, about 200 yards across.
- Another was
triggeredyesterday in Hyalite Canyon in the northern Gallatin Range (photo). This one was smaller but was triggeredby a really small piece of cornice.
- A skier
triggereda few small ones north of Big Sky on Wednesday as well that ran 100-300 vertical feet.
- Yesterday the Bridger Bowl Ski Patrol
triggeredfresh wind slabs10-15 inches thick near the ridge by dropping small cornices or ski cutting.
What makes many of these
This combination of a
The Snow Science Program at MSU needs your Help!
They are looking for backcountry skiers and sledders to help them with a study on Human Factors. Watch this 2:46 minute video for details.
Forum on Snow Science and the Human Factor on video.
In case you missed it, here's the entire 1:13 hour video from the forum on Snow Science and the Human Factor at MSU. John Stifter, editor of Powder Magazine, talks about his own personal experience with the avalanche that killed three of his friends in 2012 at Tunnel Creek. Doug Chabot gives a presentation about Sidecountry Skiing and Digging Pits starting 44 minutes into the program.
I will issue the next advisory tomorrow morning at 7:30 a.m. If you have any snowpack or avalanche observations drop us a line at firstname.lastname@example.org or call us at 587-6984.
AVALANCHE EDUCATION and EVENTS
Take a look at our Education Calendar for all classes being offered.
1-hour Avalanche Awareness, Bozeman, REI, 6:30 - 8 p.m., Wednesday, March 11.