Daily Winter Weather Report
Date: Sunday - 10 March 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||1.0||9.0||1.0||0||OC||N @ 1 - 3 mph|
|Mammoth||13.8||19.3||13.8||.01||OC||S @ 8 - 11 mph|
|Old Faithful||-5.8||0.8||-6.4||0||OC||SW @ 1 - 2 mph|
|Thorofare||12.0||14.0||12.0||.04||OC||N @ 3 - 6 mph|
|Tower||3.1||10.2||2.8||.17||OC||SSW @ 2 - 3 mph|
* * Live Weather via All Yellowstone WebCams * *
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|Road Section||Status||Conditions||Public Access / Info|
|Gardiner, MT to Mammoth||Open *||Good||NR - Not Maintained from 4:30 PM to 6:30 AM|
|Mammoth to Tower ø||Open *||ø Snow Packed/Icy||STR - Not Maintained from 4:30 PM to 6:30 AM|
|Tower to NE Entrance ø||Open *||ø Snow Packed/Icy||STR - Not Maintained from 4:30 PM to 6:30 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 ♦||CLOSED ♦||CLOSED ♦||CLOSED ♦|
|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 ♦||CLOSED ♦||CLOSED ♦||CLOSED ♦|
|Norris to Canyon ♦||CLOSED ♦||CLOSED ♦||CLOSED ♦|
|Norris to Madison ♦||CLOSED ♦||CLOSED ♦||CLOSED ♦|
|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
ø = POOR WINTER DRIVING CONDITIONS
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 Silver Gate, Montana, or Cooke City, 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: Mostly sunny unitl late afternoon then becoming partly cloudy. Highs 30 to 36.
Tonight: Partly cloudy in the evening...then mostly cloudy with a 20 percent chance of snow after midnight. Lows 13 to 19.
Monday: Cloudy with a 50 percent chance of snow. Highs 29 to 35. Southwest winds around 15 mph in the afternoon.
Monday Night: Cloudy with a 50 percent chance of snow. Lows 21 to 27. Southwest winds around 15 mph.
Tuesday: Cloudy. Snow likely in the morning...then chance of snow and rain in the afternoon. Snow accumulation of 1 to 2 inches. Highs 32 to 38. Southwest winds around 15 mph. Chance of precipitation 60 percent.
Tuesday Night: Mostly cloudy with a 40 percent chance of snow. Lows 22 to 28.
Wednesday: Partly cloudy with a 20 percent chance of snow showers. Highs 37 to 43.
Wednesday Night: Partly cloudy with a 20 percent chance of snow showers. Lows 22 to 28.
Thursday: Mostly cloudy with a 20 percent chance of snow showers and rain showers. Highs 40 to 46.
Thursday Night: Partly cloudy with a 20 percent chance of rain showers and snow showers. Lows 23 to 29.
Friday: Partly cloudy with a 20 percent chance of rain showers and snow showers. Highs 40 to 46.
Friday Night: Partly cloudy with a 20 percent chance of snow showers and rain showers. Lows 21 to 27.
Saturday: Partly cloudy in the morning then becoming mostly cloudy. A 30 percent chance of snow showers. Highs 37 to 43.
All Temperatures (Highs and Lows) are in degrees Fahrenheit (°F). All Sub Zero Temperatures are Highlighted.
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|* * * Snow Depth Totals as reported at SNOTELs * * *|
|Station||Depth (inches)||Station||Depth (inches)|
|Black Bear||98||Parker Peak||61|
|Evening Star||69||Sylvan Road||31|
|Fisher Creek||84||Thumb Divide||49|
|Grassy Lake||77||Two Ocean Plateau||72|
|Lewis Lake Divide||78||West Yellowstone||38|
|Madison Plateau||66||Whiskey Creek||46|
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from the Gallatin National Forest Avalanche Center - March 10, 2013 - this report is by Eric Knoff. This advisory Does Not Apply to operating ski areas.
At 4:00 AM mountain temperatures are ranging from the mid-teens to low twenties Fahrenheit and winds are blowing 10 to 20 mph out of the West-northwest. Today, clear skies and plenty of sunshine will allow temperatures to warm into the upper 20s to low 30s Fahrenheit. Winds will remain light this morning but will gradually increase through the day. Clouds will also increase this afternoon as the existing ridge of high pressure begins to break down. A weak weather disturbance will push into southwest Montana late tonight creating a chance of valley rain and mountain snow by tomorrow morning.
Snowpack and Avalanche Discussion:
Bridger, Gallatin, and Madison Ranges, Lionhead Area near West Yellowstone, and Cooke City:
The days are getting longer and the sun is getting stronger. Is this spring like pattern helping overall stability? The answer is – not really.
Technically, it's still winter and the snowpack continues exhibit winter like qualities. This means buried persistent weak layers and fresh wind slabs remain a concern. Yesterday, cool ambient air temperatures and a strong breeze kept the snow surface cold and dry at upper elevations. This allowed gusty northwest winds to transport available snow onto leeward slopes. Yesterday, the Big Sky Ski Patrol reported triggering fresh wind slabs 4 to 12 inches deep during control work. I also found wind loaded slopes to be the primary avalanche problem on my tour to Ernie Miller Ridge in the southern Madison Range (photo). Today, avoiding wind loaded slopes will be the best way to avoid triggering an avalanche.
A cold and dry snowpack also means buried persistent weak layers have yet to be affected by warming temperatures and strong solar input. Facets buried 2 to 3 feet deep continue to show up and propagate in stability tests (video, video). The main reason human triggered avalanches have declined on these layers is the lack of significant snowfall. On Friday, Mark could still make out the snowpit he dug 18 days ago on Cedar Mountain in the northern Madison Range. Without the stress of new snow, triggering a slide on deeper persistent weak layers is becoming increasingly difficult. However, the pack remains suspect – primarily in steep, rocky terrain. The best way to mitigate this problem is to dig snowpits and manage terrain wisely.
Another problem: Cornices have grown very large and can break farther back than one might expect. Giving cornices a wide berth when traveling along ridgelines is a wise idea (photo, photo).
Today, human triggered avalanches are possible on wind loaded slopes and slopes steeper than 35 degrees which have a MODERATE Avalanche Danger. Less steep, non-wind loaded slopes have a LOW 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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