Daily Winter Weather Report
Date: Wednesday - 13 February 2013
|Yellowstone National Park Winter Weather Links|
|Avalanche Advisory||Special Weather Info|
|Daily Winter Weather Report||Winter Road Report|
|Snow Depth Totals||Yellowstone Weather Forecast|
|Station||Pres Temp||Max Temp||Min Temp||New Snow||Depth||Sky||Present Conditions|
|Bechler||21.0||21.0||17.0||0||OC||W @ 3 - 7 mph|
|Lake||18.0||18.0||16.0||.03||OC||N @ 3 mph|
|Mammoth||24.8||24.8||21.9||0||OC||S @ 6 - 8 mph|
|Old Faithful||18.6||18.6||16.8||0||OC||ESE @ 8 - 12 mph|
|Thorofare||15.0||15.0||13.0||0||OC||NW @ 9 - 17 mph|
|Tower||20.9||21.9||18.7||.01||OC||SSE @ 3 - 5 mph|
* * Live Weather via All Yellowstone WebCams * *
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|Road Section||Status||Conditions||Public Access / Info|
|Gardiner, MT to Mammoth||Open *||Good||STR - Not Maintained from 4:30 PM to 6:00 AM|
|Mammoth to Tower||Open *||Snow Packed/Icy||STR - Not Maintained from 4:30 PM to 6:00 AM|
|Tower to NE Entrance||Open *||Snow Packed/Icy||STR - Not Maintained from 4:30 PM to 6:00 AM|
|Beartooth Highway ♦||CLOSED ♦||CLOSED ♦||CLOSED ♦|
|Canyon to Lake||Open||Rubber tracked oversnow concession vehicles|
|Canyon to Tower ♦||CLOSED ♦||CLOSED ♦||CLOSED ♦ (over Dunraven Pass)|
|Grant to South Entrance||Open||Rubber tracked oversnow concession vehicles|
|Junction to Chief Joseph Hwy ♦||CLOSED ♦||CLOSED ♦||CLOSED ♦|
|Lake to East Entrance||Open||Rubber tracked oversnow concession vehicles|
|Lake to West Thumb||Open||Rubber tracked oversnow concession vehicles|
|Madison to Old Faithful||Open||Rubber tracked oversnow concession vehicles|
|Madison to West Yellowstone||Open||Rubber tracked oversnow concession vehicles|
|Mammoth to Norris||Open||Rubber tracked oversnow concession vehicles|
|Norris to Canyon||Open||Rubber tracked oversnow concession vehicles|
|Norris to Madison||Open||Rubber tracked oversnow concession vehicles|
|Old Faithful to Grant||Open||Rubber tracked oversnow concession vehicles|
* = 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 ********
|¤ ¤ - Please Note - ¤ ¤||There is NO wheeled vehicle travel East of Cooke City, Montana during the winter. This road (U.S. Highway 212), is Closed to Wheeled Vehicle Travel to the East as it is not plowed or maintained until late spring. In order to exit Cooke City, Montana, or Silver Gate, Montana, and Yellowstone, you must travel West back through Yellowstone to the North Entrance at Gardiner, Montana to exit the park and these towns.|
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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. Also, see the Avalanche Advisory posted below.
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by the National Weather Service Riverton, Wyoming
Today: Breezy...snow. Snow accumulation of 2 to 3 inches. Total snow accumulation 2 to 4 inches. West winds 15 to 20 mph. Chance of snow 80 percent. Highs 22°F to 28°F.
Tonight: Cloudy with a 50 percent chance of snow. West winds around 15 mph early in the evening. Lows 8°F to 14°F.
Thursday: Mostly cloudy with a 40 percent chance of snow. Highs 19°F to 25°F.
Thursday Night: Mostly cloudy with a 40 percent chance of snow. Lows 5°F to 11°F.
Friday: Partly cloudy with a 20 percent chance of snow. Highs 24°F to 30°F.
Friday Night: Partly cloudy in the evening then clearing. Lows 7°F to 13°F.
Saturday: Mostly sunny. Highs 26°F to 32°F.
Saturday Night: Partly cloudy in the evening then becoming mostly cloudy. A 30 percent chance of snow. Lows 11°F to 17°F.
Sunday: Mostly cloudy with a 50 percent chance of snow. Highs 21°F to 27°F.
Sunday Night: Colder. Mostly cloudy in the evening then becoming partly cloudy. A 30 percent chance of snow. Lows 1°F to 7°F.
Monday / Presidents' Day: Partly cloudy. Highs 17°F to 23°F.
Monday Night / Presidents' Day Night: Partly cloudy. Lows 3°F to 9°F.
Tuesday: Partly cloudy with a 20 percent chance of snow. Highs 21°F to 27°F.
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|* * * Snow Depth Totals as reported at SNOTELs * * *|
|Station||Depth (inches)||Station||Depth (inches)|
|Black Bear||83||Parker Peak||56|
|Evening Star||63||Sylvan Road||29|
|Fisher Creek||74||Thumb Divide||40|
|Grassy Lake||65||Two Ocean Plateau||60|
|Lewis Lake Divide||65||West Yellowstone||26|
|Madison Plateau||53||Whiskey Creek||33|
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from the Gallatin National Forest Avalanche Center - February 13, 2013 - this report is by Doug Chabot. This advisory does not apply to operating ski areas.
Yesterday morning 3 to 4 inches of snow fell around Big Sky with other areas receiving just a trace to one inch. Winds are still cranking from the west in the Bridger Range and Hyalite area at 30 to 50 mph; all other weather stations are measuring 15 to 30 mph. Under cloudy skies temperatures are in the mid-teens Fahrenheit. A moist northwest flow will drop 1 to 2 inches of snow today with mountain temperatures reaching the mid-20s Fahrenheit and wind speeds remaining the same.
Snowpack and Avalanche Discussion:
Cooke City has a deep, mostly stable snowpack. Winds have been light which is a welcome change from normal. Although generally safe avalanche conditions exist, there are still isolated slopes at lower elevations that are thin and weak and could produce small slides. For today, the Avalanche Danger remains LOW.
Bridger, Southern Gallatin and Madison Ranges, and Lionhead area near West Yellowstone:
The Bridger Range and mountains around Big Sky to West Yellowstone have two avalanche problems to be aware of:
1. Thin snowpacks are weaker;
2. Some slopes have a buried weak layer 1 to 2 feet under the surface.
On Monday, touring into Beehive Basin, I found thick layers of faceted grains in areas less than three feet deep. Thin snowpacks are weak and unstable and should be avoided. Yesterday, I went into Bacon Rind and easily found the layer of surface hoar buried under a foot of snow. It shows up as a high visibility stripe in the snowpit (photo, video). This layer is gaining strength, but I don't trust it and do not recommend getting on steep slopes where it exists. Over the weekend there were reports of cracking and collapsing in the northern Madison Range as well as a skier triggering an avalanche on Lionhead Ridge (photo).
For today, the Avalanche Danger is rated MODERATE on all slopes since human triggered avalanches are still possible.
Northern Gallatin Range:
The northern Gallatin Range is windy and had a foot of new snow to blow around from Sunday's storm. Yesterday, Mark toured into Alex Lowe Peak with the skier who was caught in Saturday's avalanche. Winds were blowing, gusting and building drifts. In most spots these were glued down and stable, but where they formed over weak layers they will be unstable. Mark dug in the avalanche crown and found a layer of small facets that broke under a hard slab. The avalanche was triggered from a thin spot (only two feet deep) which is indicative of a widespread problem throughout southwest Montana. Skiers in Flanders drainage yesterday skied lower angled slopes when they too found thin, weak snow in the upper elevations. Today the Avalanche Danger is rated CONSIDERABLE on all wind-loaded terrain. All other slopes have a MODERATE Avalanche Danger.
The next advisory tomorrow morning at 7:30 AM. 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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