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: Monday - 21 January 2013
|Station||Pres Temp||Max Temp||Min Temp||New Snow||Depth||Sky||Present Conditions|
|Bechler||-8.0||-4.0||-8.0||0||SC||N @ 1 - 2 mph|
|Mammoth||21.4||25.4||21.4||0||11||SC||SSW @ 8 - 12 mph|
|Old Faithful||-3.5||6.1||-4.1||0||29||SC||ESE @ 1 mph|
|Thorofare||19.0||20.0||19.0||0||SC||E @ 2 - 6 mph|
|Tower||0.8||11.2||-0.3||0||7.40||SC||SSW @ 3 - 4 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 / Martin Luther King Jr Day: Partly cloudy in the morning then clearing. Highs 24°F to 30°F.
Tonight / Martin Luther King Jr Night: Mostly clear. Lows 3°F to 11°F.
Tuesday: Mostly sunny. Highs 24°F to 30°F.
Tuesday Night: Mostly clear. Lows 6°F to 12°F.
Wednesday: Partly cloudy in the morning...then mostly cloudy with a 20 percent chance of snow in the afternoon. Southwest winds around 15 mph in the afternoon. Highs 25°F to 31°F.
Wednesday Night: Cloudy with a 40 percent chance of snow. Lows 5°F to 11°F.
Thursday: Breezy. Mostly cloudy with a 40 percent chance of snow. Highs 16°F to 22°F.
Thursday Night: Partly cloudy with a 20 percent chance of snow. Lows 1°F to 7°F.
Friday: Partly cloudy with a 20 percent chance of snow. Highs 23°F to 29°F.
Friday Night: Partly cloudy. Lows 8°F to 14°F.
Saturday: Partly cloudy in the morning then becoming mostly cloudy. Highs 25°F to 31°F.
Saturday Night: Mostly cloudy with a 20 percent chance of snow. Lows 9°F to 15°F.
Sunday: Mostly cloudy with a 40 percent chance of snow. Highs 25°F to 31°F.
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|* * * Snow Depth Totals as reported at SNOTELs * * *|
|Station||Depth (inches)||Station||Depth (inches)|
|Black Bear||70||Parker Peak||45|
|Blackwater||45||Snake River Station||32|
|Evening Star||49||Sylvan Road||23|
|Fisher Creek||63||Thumb Divide||38|
|Grassy Lake||51||Two Ocean Plateau||53|
|Lewis Lake Divide||59||West Yellowstone||23|
|Madison Plateau||49||Whiskey Creek||30|
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from the Gallatin National Forest Avalanche Center - January 21, 2013 - this report is by Eric Knoff. This advisory does not apply to operating ski areas.
At 4:00 AM mountain temperatures are in the 20s Fahrenheit and winds are blowing 15 to 25 from the West-northwest. Today, temperatures will warm into the low 30s Fahrenheit under partly to mostly cloudy skies and winds will continue to blow 15 to 25 from the West-northwest. There is no chance for precipitation over the next 24 hours.
Snowpack and Avalanche Discussion:
The Bridger, Gallatin, and Madison Ranges, the Lionhead area near West Yellowstone, and Cooke City:
It has been nearly a week since measurable snow has fallen over our advisory area. Despite the lack of precipitation, strong winds have been plentiful. This dry but windy pattern has blown snow into stiff hard slabs - now found on the leeward side of ridgelines and exposed terrain features (photo). On most slopes, dense slabs that formed earlier in the week have stabilized, but areas with wind deposited snow continue to deserve respect.
Yesterday, skiers near Lulu Pass outside of Cooke City observed a human triggered avalanche that occurred on a heavily wind loaded slope (photo). I also experienced a large collapse on a wind loaded slope while touring in Hyalite on Saturday. These blatant signs of instability are good reminders that pockets of unstable snow continue to linger.
The tricky part about this scenario is that most slopes are stable, but not all. Today, heightened avalanche conditions exist on slopes where wind deposited snow rests over a layer of facets formed in early January. Fortunately, this layer is not widespread and can be looked for and assessed quickly (video). If this layer is found, move to a different area or choose a slope with a lower angle.
Today, human triggered avalanches are possible on wind loaded slopes and slopes steeper than 35 degrees which have a MODERATE Avalanche Danger. 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 email@example.com 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 firstname.lastname@example.org or call: 406-587-6984.
For detailed Avalanche Terms utilized here, please see the Avalanche Glossary.
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Information provided by Yellowstone National Park, National Weather Service and Gallatin National Forest Avalanche Center
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