Daily Winter Weather Report
|Yellowstone National Park Winter Weather Links|
|Avalanche Advisory||Special Weather Info|
|Daily Winter Weather Report||Winter Road Report|
|Snow Depth Totals||Yellowstone Weather Forecast|
Date: Tuesday - 22 January 2013
|Station||Pres Temp||Max Temp||Min Temp||New Snow||Depth||Sky||Present Conditions|
|Bechler||-11.0||-4.0||-11.0||0||SC||N @ 2 - 3 mph|
|Mammoth||18.4||20.6||16.4||0||11||SC||S @ 5 - 7 mph|
|Old Faithful||-2.6||0.8||-2.8||0||25||SC||SSW @ 1 - 2 mph|
|Thorofare||18.0||22.0||18.0||0||SC||SE @ 2 - 5 mph|
|Tower||-5.8||3.8||-5.8||.01||7.41||SC||ESE @ 2 mph|
* * Live Weather via All Yellowstone WebCams * *
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|Road Section||Status||Conditions||Public Access / Info|
|Gardiner to Mammoth||Open *||STR|
|Mammoth to Tower||Open *||STR|
|Tower to NE Entrance||Open *||STR|
|Beartooth Highway||CLOSED ♦||CLOSED ♦||CLOSED ♦|
|Canyon to Lake||Open||Fair||Rubber tracked oversnow concession vehicles|
|Firehole Canyon Drive||Open||Fair||Rubber tracked oversnow concession vehicles|
|Grant to South Entrance||Open||Fair||Rubber tracked oversnow concession vehicles|
|Junction to Chief Joseph Hwy||CLOSED ♦||CLOSED ♦||CLOSED ♦|
|Lake to East Entrance||Open||Fair||Rubber tracked oversnow concession vehicles|
|Lake to West Thumb||Open||Fair||Rubber tracked oversnow concession vehicles|
|Madison to Old Faithful||Open||Fair||Rubber tracked oversnow concession vehicles|
|Madison to West Yellowstone||Open||Fair||Rubber tracked oversnow concession vehicles|
|Mammoth to Norris||Open||Fair||Rubber tracked oversnow concession vehicles|
|Norris to Canyon||Open||Fair||Rubber tracked oversnow concession vehicles|
|Norris to Madison||Open||Fair||Rubber tracked oversnow concession vehicles|
|Old Faithful to Grant||Open||Fair||Rubber tracked oversnow concession vehicles|
|Tower to Canyon||CLOSED ♦||CLOSED ♦||CLOSED ♦|
* = Open year-round to wheeled vehicle travel.
NR=No Restrictions / STA=Snow Tires Advised / STR=Snow Tires Required
♦ = CLOSED FOR THE WINTER SEASON
The park service plowing schedule for roads for the spring season.
******** FOR CURRENT ROAD INFORMATION PLEASE CALL 307-344-2117 ********
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Caution advised for snow falling off of building roofs. Park accordingly.
Dangerous avalanche conditions may already exist in many back country areas, please call the Recorded Avalanche Advisory 406-587-6981 for the most current conditions.
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by the National Weather Service Riverton, WY
Today: Sunny. Patchy fog in the morning. Highs 26°F to 32°F.
Tonight: Mostly clear. Lows 7°F to 15°F.
Wednesday: Partly cloudy. Highs 29°F to 35°F.
Wednesday Night: Mostly cloudy with a 30 percent chance of snow. Southwest winds around 15 mph. Lows 8°F to 14°F.
Thursday: Cloudy with a 30 percent chance of snow. West winds around 15 mph in the afternoon. Highs 18°F to 24°F.
Thursday Night: Breezy. Mostly cloudy. Lows 3°F to 9°F.
Friday: Partly cloudy. Highs 23°F to 29°F.
Friday Night: Partly cloudy. Lows 11°F to 17°F.
Saturday: Mostly cloudy with a 40 percent chance of snow. Highs 26°F to 32°F.
Saturday Night: Mostly cloudy with a 40 percent chance of snow. Lows 11°F to 17°F.
Sunday: Mostly cloudy with a 40 percent chance of snow. Highs 24°F to 30°F.
Sunday Night: Mostly cloudy with a 40 percent chance of snow. Lows 6°F to 12°F.
Monday: Mostly cloudy with a 40 percent chance of snow. Highs 19°F to 25°F.
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|* * * Snow Depth Totals as reported at SNOTELs * * *|
|Station||Depth (inches)||Station||Depth (inches)|
|Black Bear||70||Parker Peak||44|
|Blackwater||45||Snake River Station||31|
|Evening Star||49||Sylvan Road||23|
|Fisher Creek||63||Thumb Divide||38|
|Grassy Lake||51||Two Ocean Plateau||53|
|Lewis Lake Divide||58||West Yellowstone||23|
|Madison Plateau||49||Whiskey Creek||30|
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from the Gallatin National Forest Avalanche Center - January 22, 2013 - this report is by Doug Chabot. This advisory does not apply to operating ski areas.
A ridge of high pressure is firmly parked over the western US. At 4:00 AM temperatures are in the low 20s Fahrenheit under clear skies. Today will be a repeat of yesterday, but slightly warmer: sunny skies, westerly winds 15 to 30 mph and mountain temperatures reaching the upper-thirties Fahrenheit. Sunburns are a greater threat today than avalanches.
Snowpack and Avalanche Discussion:
The Bridger, Gallatin, and Madison Ranges, the Lionhead area near West Yellowstone, and Cooke City:
Overall the snowpack in southwest Montana is looking pretty good. Pretty good is not perfect, so it's important to know what to look for in order to stay out of trouble. Even though we have not had any storms since last Tuesday, the winds have been scraping every last molecule of snow onto leeward slopes. On a few of these slopes folks were able to trigger small slides. Over the weekend shallow slabs (less than a foot deep) were triggered off Lionhead Ridge (photo). Outside Cooke City a small, but heavily wind-loaded pocket pulled out near Lulu Pass (photo), and Eric had an unexpected collapse on a wind-loaded slope up Hyalite.
Yesterday, my partner and I rode and skied in the Taylor Fork area of the southern Madison Range. The weakest layer in the snowpack is sugary facets buried a foot deep. In our snowpits they only reacted on a southwest facing hill after applying a bit of force (ECTP 16, photo). This layer is slowly gaining strength and without additional snow it's unlikely it would avalanche. On the surface another weak layer is forming (photo) as tiny facets grow over a razor thin ice crust. The process is known as radiation recrystallization, a type of near-surface faceting (article), and can become a problem if it gets buried before the sun has a chance to melt it.
Although stability is getting better by the day it's still possible to trigger a small avalanche on a wind-loaded slope steeper than 35 degrees. Consequently, the Avalanche Danger is rated MODERATE on this terrain. All other slopes have a LOW Avalanche Danger.
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: 406-587-6984.
EDUCATION, PHOTOS, SNOWPITS, and VIDEOS
1. For links to Articles, Education and (photos), (snowpits), or (videos) listed in the above report, please visit this Link.
If you have any snowpack or avalanche observations, drop them a line at email@example.com or call: 406-587-6984.
For detailed Avalanche Terms utilized here, please see the Avalanche Glossary.
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Back to the Yellowstone Daily Winter Reports or the Yellowstone Weather Page
Information provided by Yellowstone National Park, National Weather Service and Gallatin National Forest Avalanche Center
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