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: Wednesday - 23 January 2013
|Station||Pres Temp||Max Temp||Min Temp||New Snow||Depth||Sky||Present Conditions|
|Bechler||4.0||9.0||4.0||0||SC||N @ 2 - 4 mph|
|Mammoth||25.6||25.7||22.7||0||11||SC||SSW @ 5 - 7 mph|
|Old Faithful||-0.4||7.0||-0.4||0||25||SC||ESE @ 1 mph|
|Thorofare||29.0||29.0||27.0||0||SC||ESE @ 6 - 9 mph|
|Tower||6.8||8.7||6.7||0||7.41||SC||SW @ 1 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: Partly cloudy. Southwest winds around 15 mph. Highs 29°F to 35°F.
Tonight: Breezy. Mostly cloudy. A 30 percent chance of snow after midnight. Southwest winds 15 to 20 mph. Gusts up to 35 mph. Lows 13°F to 19°F.
Thursday: Breezy. Mostly cloudy with a 50 percent chance of snow. Southwest winds 15 to 20 mph with gusts to around 35 mph. Highs 19°F to 25°F.
Thursday Night: Breezy. Partly cloudy with a 20 percent chance of snow. Southwest winds 15 to 20 mph. Lows 8°F to 14°F.
Friday: Partly cloudy with a 20 percent chance of snow. Highs 24°F to 30°F.
Friday Night: Partly cloudy with a 30 percent chance of snow. Lows 11°F to 17°F.
Saturday: Partly cloudy with a 30 percent chance of snow. Highs 25°F to 31°F.
Saturday Night: Mostly cloudy with a 30 percent chance of snow. Lows 12°F to 18°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 8°F to 14°F.
Monday: Mostly cloudy with a 40 percent chance of snow. Highs 19°F to 25°F.
Monday Night: Colder. Partly cloudy with a 30 percent chance of snow. Lows 0°F to 6°F.
Tuesday: Partly cloudy with a 30 percent chance of snow. Highs 13°F to 19°F.
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|* * * Snow Depth Totals as reported at SNOTELs * * *|
|Station||Depth (inches)||Station||Depth (inches)|
|Black Bear||71||Parker Peak||44|
|Blackwater||44||Snake River Station||31|
|Evening Star||48||Sylvan Road||23|
|Fisher Creek||62||Thumb Divide||38|
|Grassy Lake||50||Two Ocean Plateau||53|
|Lewis Lake Divide||58||West Yellowstone||22|
|Madison Plateau||48||Whiskey Creek||30|
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from the Gallatin National Forest Avalanche Center - January 23, 2013 - this report is by Doug Chabot. This advisory does not apply to operating ski areas.
Under partly cloudy skies there's no new snow to report. Mountain temperatures are in the low thirties Fahrenheit around Bozeman and Big Sky and mid-twenties Fahrenheit near Cooke City and West Yellowstone. Currently, west to southwest winds are blowing 10 to 25 mph at the ridgetops. Clouds will increase later today with some flurries expected after midnight as winds increase to 30 mph and mountain temperatures cool into the twenties Fahrenheit. By morning we'll see a trace to one inch of snow, if we're lucky.
Snowpack and Avalanche Discussion:
The Bridger, Gallatin, and Madison Ranges, the Lionhead area near West Yellowstone, and Cooke City:
Today is day eight without snowfall. In the last 48 hours winds have calmed and there is very little snow left for transport at the ridgelines. The snowpack stability continues to improve and avalanche activity is unlikely. Throughout our advisory area there are two common things happening:
1. The weakest layer in the snowpack, a layer of facets 6 to 16 inches under the surface, is gaining strength as the crystals round and bond together.
2. The surface snow is changing into and/or growing our next weak layer.
Yesterday, an MSU graduate student went to Lionhead and performed 28 stability tests on a slope with only two showing propagation. This is a very good sign of stability. He also noted a thick layer of feathery surface hoar crystals. On Sunday, a skier in Bacon Rind also found buried facets gaining strength and saw large flakes of surface hoar (photo). The same day in Taylor Fork, I too discovered surface faceting (photo) and stable snow.
Over the weekend a few small and shallow avalanches were triggered on steep, wind drifted slopes outside Cooke City and in Lionhead (photo). Wind effected slopes, or places with an exceptionally thin snowpack, may hold isolated, small pockets of unstable snow. Although triggering an avalanche is unlikely, it is not impossible. Given the overall stability and generally safe conditions, the Avalanche Danger today is rated LOW.
In the last few years our snow has been more unstable than not and the danger rating Low rarely got used. As a forecaster, writing Low for our entire area feels weird and unfamiliar, but our data and field trips have led us here. We are not throwing caution to the wind, but to be honest, on our days off we are skiing lines, climbing routes and traveling in the backcountry like it's a Low 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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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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