Go Back   Back Country Rebels - Forums > SITE RULES, ANNOUNCEMENTS and MEMBER INPUT > BCR FORUM RIDE -WEST YELLOWSTONE 2012

BCR FORUM RIDE -WEST YELLOWSTONE 2012 Feb 23 - 26th All information will be posted in here.

Reply
 
Thread Tools Display Modes
  #1  
Old 02-20-2012, 09:49 PM
TROUT HUNTER's Avatar
TROUT HUNTER TROUT HUNTER is offline
"Little Creep"
 
Join Date: Nov 2009
Posts: 3,418
TROUT HUNTER has disabled reputation
Default This Weeks Avy Updates for the ride area

Good morning. This is Eric Knoff with the Gallatin National Forest Avalanche Advisory issued on, Monday, February 20 at 7:30 a.m. Pinhead Classic Telemark Festival, in partnership with the Friends of the Avalanche Center, sponsors today’s advisory. This advisory does not apply to operating ski areas.

Mountain Weather:

Over the past 24 hours quiet weather has been in place over southwest Montana. This pattern should continue through much of today. Currently, mountain temperatures are ranging from the single digits to low teens and winds are blowing out of the WNW at 15-25 mph. Today, temperatures will climb into the twenties and winds will gradually increase out of the WNW blowing 25-35 mph. Skies will remain mostly clear through the morning, but an approaching front will produce increasing clouds by this evening. A warming trend will allow temperatures to rise to above seasonal averages by tomorrow.

Snowpack and Avalanche Discussion:

The Bridger, Madison, and Gallatin Ranges, the Lionhead area near West Yellowstone, and the mountains around Cooke City:

The snowpack continues to show signs of weakness.

Yesterday, skiers intentionally triggered one of the Titanic Chutes off Yellow Mountain near Big Sky. This slide broke 7-10 inches deep and propagated over 400 feet across.
Other skiers in Beehive Basin observed a significant avalanche on a west-facing slope around 9000 ft.
On Saturday night, Doug observed recent avalanche activity while involved with a search and rescue mission near Sacajawea in the Northern Bridger range. He and his rescue partners came upon debris from a large natural avalanche that originated in the bowls above Fairy Lake.
A skier near Cooke City observed natural avalanche activity on east and north facing slopes (photo).
The Bridger Bowl Ski Patrol triggered soft slab avalanches during control work yesterday (photo).

A weak interface between the old snow surface and new storm snow is the culprit for most of the activity (video). Any slope that has received a wind load or is steeper than 35 degrees will be the most susceptible to human triggered avalanches. Steep rollovers or areas where the snowpack is thinner, mainly around rock outcroppings or near thin scoured areas will be likely trigger points.

The widespread nature of the avalanche activity is a good reminder that storms of six inches or less are still capable of producing dangerous avalanches.

Although the snowpack has had a day to adjust it will remain reactive to the weight of a skier or rider. For this reason the avalanche danger is rated CONSIDERABLE on wind loaded slopes and slopes steeper than 35 degrees. Less steep, non wind loaded slopes have MODERATE avalanche danger.

Doug 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 mtavalanche@gmail.com or call us at 587-6984.
Reply With Quote
  #2  
Old 02-20-2012, 10:09 PM
Get Lucky's Avatar
Get Lucky Get Lucky is offline
REBEL
 
Join Date: Nov 2009
Posts: 30,097
Get Lucky Offical PLPGet Lucky Offical PLPGet Lucky Offical PLPGet Lucky Offical PLP
Get Lucky Offical PLPGet Lucky Offical PLPGet Lucky Offical PLPGet Lucky Offical PLPGet Lucky Offical PLPGet Lucky Offical PLPGet Lucky Offical PLPGet Lucky Offical PLP
Default

Good idea!
Reply With Quote
  #3  
Old 02-20-2012, 10:10 PM
Rob1334's Avatar
Rob1334 Rob1334 is offline
" Boo's Life Coach Student "
 
Join Date: Nov 2009
Location: ND
Posts: 12,696
Rob1334 Offical PLPRob1334 Offical PLPRob1334 Offical PLPRob1334 Offical PLP
Rob1334 Offical PLPRob1334 Offical PLPRob1334 Offical PLPRob1334 Offical PLPRob1334 Offical PLPRob1334 Offical PLPRob1334 Offical PLPRob1334 Offical PLP
Default

Great thread, appreciate this!
__________________
- - "In Crowd" - -
Flatlander Bobby


Roughrider Snowmobile Club
Reply With Quote
  #4  
Old 02-21-2012, 09:24 AM
TROUT HUNTER's Avatar
TROUT HUNTER TROUT HUNTER is offline
"Little Creep"
 
Join Date: Nov 2009
Posts: 3,418
TROUT HUNTER has disabled reputation
Default

Good morning. This is Doug Chabot with the Gallatin National Forest Avalanche Advisory issued on Tuesday, February 21 at 7:30 a.m. The Yellowstone Club Community Foundation, in partnership with the Friends of the Avalanche Center, sponsor today’s advisory. This advisory does not apply to operating ski areas.

Mountain Weather:

At 6 a.m. seven to nine inches of new snow has fallen throughout southwest Montana. A moist Pacific storm is driving through on a northwest flow. Mountain temperatures are in the teens and ridgetop winds are blowing west to northwest at 25-35 mph. The storm is expected to pick up later this morning and last through Wednesday. Today winds will pick up to 30-40 mph and more snow will fall. By morning I expect 10-12 inches in the mountains.

Snowpack and Avalanche Discussion:

The Bridger, Gallatin and Madison Ranges, the Lionhead area near West Yellowstone and the mountains around Cooke City:

If you enter avalanche terrain today you will likely trigger an avalanche. Today is not a day to trifle with the snowpack. It’s ornery and getting more dangerous as more snow falls and wind blows.

Last week we formed a weak layer at the surface that quickly became unstable once it was buried. This layer of small-grained facets is buried about a foot deep and is found on all aspects of the compass throughout our entire advisory area. In the last two days it was propagating fractures and avalanching. Our current snow storm is rapidly loading slopes increasing stress on this layer. On slopes with thin snow cover, like in the Bridger and northern Madison Range, I expect avalanches to step down to the ground on large, sugary grains of depth hoar. Avalanche activity is Mother Nature’s warning sign that slopes are unstable. Activity includes:

Outside of Cooke City on Saturday, Mark triggered a slide on this layer of near-surface facets. Yesterday, a snowboarder and his friends were able to trigger pockets on every run they took near Fisher Peak. The winds were ripping and loading slopes during the day and have not abated.
I investigated an avalanche in Beehive Basin that ran 500 feet wide on Sunday on this layer. It broke to the ground in spots too. (photo 1, photo 2, video of crown)
Skiers also triggered a large slide on Yellow Mountain on Sunday.
Yesterday, a skier in Hyalite triggered two small pockets on steep slopes near Divide Peak (photo) when the snow broke on these facets.
I saw debris from natural slides in the Bridger Range early Sunday morning near Sacajewea and Hardscabble Peak.

For today, the avalanche danger is rated HIGH on wind-loaded slopes steeper than 35 degrees and CONSIDERABLE on all other slopes. Instability is widespread. If the storm continues the avalanche danger will rise further.
Reply With Quote
  #5  
Old 02-21-2012, 09:26 AM
TROUT HUNTER's Avatar
TROUT HUNTER TROUT HUNTER is offline
"Little Creep"
 
Join Date: Nov 2009
Posts: 3,418
TROUT HUNTER has disabled reputation
Default

Reply With Quote
  #6  
Old 02-21-2012, 09:50 AM
Get Lucky's Avatar
Get Lucky Get Lucky is offline
REBEL
 
Join Date: Nov 2009
Posts: 30,097
Get Lucky Offical PLPGet Lucky Offical PLPGet Lucky Offical PLPGet Lucky Offical PLP
Get Lucky Offical PLPGet Lucky Offical PLPGet Lucky Offical PLPGet Lucky Offical PLPGet Lucky Offical PLPGet Lucky Offical PLPGet Lucky Offical PLPGet Lucky Offical PLP
Default

Not good
Reply With Quote
  #7  
Old 02-21-2012, 09:55 AM
TROUT HUNTER's Avatar
TROUT HUNTER TROUT HUNTER is offline
"Little Creep"
 
Join Date: Nov 2009
Posts: 3,418
TROUT HUNTER has disabled reputation
Default

Quote:
Originally Posted by Get Lucky View Post
Not good
good part about west is there is such a huge amount of terrain between that and IP, there is a ton of safe areas to play in. Just ask the guys from yesterday. We didn't touch a 1/4 of the stuff we could have.
Reply With Quote
  #8  
Old 02-21-2012, 07:13 PM
msled's Avatar
msled msled is offline
REBEL
 
Join Date: Nov 2009
Location: 97417°N - 117.42833°W
Posts: 111,074
msled Offical PLPmsled Offical PLPmsled Offical PLPmsled Offical PLP
msled Offical PLPmsled Offical PLPmsled Offical PLPmsled Offical PLPmsled Offical PLPmsled Offical PLPmsled Offical PLPmsled Offical PLP
Default

Thanks for the info Bubba.
Reply With Quote
  #9  
Old 02-21-2012, 07:43 PM
TROUT HUNTER's Avatar
TROUT HUNTER TROUT HUNTER is offline
"Little Creep"
 
Join Date: Nov 2009
Posts: 3,418
TROUT HUNTER has disabled reputation
Default

Quote:
Originally Posted by msled View Post
Thanks for the info Bubba.
Ill try and get the daily report posted up every morning so people can at least check it before we all head out to play.
Reply With Quote
  #10  
Old 02-22-2012, 08:36 AM
TROUT HUNTER's Avatar
TROUT HUNTER TROUT HUNTER is offline
"Little Creep"
 
Join Date: Nov 2009
Posts: 3,418
TROUT HUNTER has disabled reputation
Default

I can't get to a comp to c and p it off my email basically everything is extremely high, recomendations are to stay off even little steep hills today. ride safe today.
Reply With Quote
Reply
Back Country Rebels - Forums > SITE RULES, ANNOUNCEMENTS and MEMBER INPUT > BCR FORUM RIDE -WEST YELLOWSTONE 2012

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -6. The time now is 06:11 PM.

 

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Managed by wDa @ WD ™

Designed by Military Ltd