Daily Winter Weather Report
Date: Saturday - 09 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||20.0||24.0||19.0||.08||OC||NNE @ 2 - 9 mph|
|Mammoth||17.1||26.2||17.1||.08||OC||W @ 5 - 6 mph|
|Old Faithful||-2.9||16.7||-2.9||-||OC||SE @ 1 mph|
|Thorofare||14.0||21.0||14.0||.01||OC||NNW @ 3 - 7 mph|
|Tower||9.2||23.6||9.1||.05||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 ø||Open *||ø Snow Packed/Icy||STR - 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||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
ø = FAIR 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: Partly cloudy in the morning then clearing. Highs 28 to 34. North winds around 15 mph in the morning and afternoon.
Tonight: Mostly clear. Lows 6 to 12.
Sunday: Mostly sunny. Patchy fog early in the morning. Highs 30 to 36.
Sunday Night: Partly cloudy in the evening then becoming mostly cloudy. Lows 14 to 20.
Monday: Mostly cloudy. Slight chance of snow in the morning...then chance of snow in the afternoon. Highs 30 to 36. Southwest winds around 15 mph in the afternoon. Chance of snow 40 percent.
Monday Night: Cloudy with a 40 percent chance of snow. Lows 20 to 26.
Tuesday: Cloudy. Chance of snow in the morning...then chance of snow or rain in the afternoon. Highs 34 to 40. Chance of precipitation 40 percent.
Tuesday Night: Mostly cloudy with a 20 percent chance of snow. Lows 21 to 27.
Wednesday: Mostly cloudy. Slight chance of snow in the morning...then slight chance of rain and snow in the afternoon. Highs 37 to 43. Chance of precipitation 20 percent.
Wednesday Night: Mostly cloudy in the evening then becoming partly cloudy. A 20 percent chance of snow. Lows 22 to 28.
Thursday: Partly cloudy. Slight chance of snow in the morning...then slight chance of rain and snow in the morning...then slight chance of rain and snow in the afternoon. Highs 39 to 45. Chance of precipitation 20 percent.
Thursday Night: Partly cloudy with a 20 percent chance of snow. Lows 21 to 27.
Friday: Partly cloudy in the morning...then mostly cloudy with slight chance of rain and snow in the afternoon. Highs 37 to 43. Chance of precipitation 20 percent.
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||101||Parker Peak||61|
|Evening Star||70||Sylvan Road||31|
|Fisher Creek||84||Thumb Divide||50|
|Grassy Lake||77||Two Ocean Plateau||72|
|Lewis Lake Divide||79||West Yellowstone||38|
|Madison Plateau||67||Whiskey Creek||46|
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from the Gallatin National Forest Avalanche Center - March 09, 2013 - this report is by Eric Knoff. This advisory Does Not Apply to operating ski areas.
Over the past 24 hours the mountains around West Yellowstone and Cooke City including the southern Madison Range picked up 2 to 3 inches of snow. The mountains around Big Sky picked up around one inch while the Bridger Range remained dry. Currently, temperatures are in the mid-teens to low twenties Fahrenheit and winds are blowing 5 to 15 mph out of the Northwest. Today, temperatures will warm into the upper twenties to low thirties Fahrenheit under clear skies and winds will stay light out the Northwest. Beautiful weather is on the books for the next 24 hours.
Snowpack and Avalanche Discussion:
Bridger, Gallatin, and Madison Ranges, Lionhead Area near West Yellowstone, and Cooke City:
I've recently been asked - where are human triggered avalanches most likely? This is a tricky question - and there is more than one answer.
Today - human triggered avalanches will be possible on wind loaded slopes. Upper elevation slopes below ridgelines or on the leeward side of cross loaded terrain features deserve special attention. Wind slabs will be most common above tree-line; however, forested slopes may also hold wind deposited snow. Rounded wind pillows and cornices are visual clues of active wind loading. Although wind slabs are gradually stabilizing, I wouldn't bet the farm that a wind loaded slope would stay put under the weight of a skier or rider - especially in high consequence terrain.
A more insidious problem is buried persistent weak layers. Like a blister on the heel, facets buried 2 to 3 feet deep continue to be a nagging concern (video). Yesterday, Mark and I toured around Cedar Mountain in the northern Madison Range. We found many stable slopes, but we also found facets willing to propagate in stability tests (snowpit). Areas where the snowpack is thin, primarily around scoured ridgelines or in steep-rocky terrain will be likely places to find weak snow. Also, mid to low elevation slopes where the snowpack is less than a meter deep may hold unstable conditions. Digging snowpits and doing stability tests is the best way to stack the deck in your favor (video).
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 – heightened avalanche conditions exist on specific terrain features making human triggered avalanches are possible. For this reason the Avalanche Danger is rated MODERATE.
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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