Yellowstone Up Close and Personal Logo © Copyright Page Makers, LLC
Yellowstone Up Close and Personal Grizzly Logo © Copyright Page Makers, LLC

Daily Winter Weather Report

Date: Saturday - January 01, 2011

Station Max Temp Min Temp Pres Temp New Snow Snow Depth BC OC SC Present Conditions
Canyon 6 -24 -22 T 40   X   Calm
East Entrance 4 -16 -3 T 33   X   Calm / Light snow
Grant Village 27 -14 -13 6 50   X   Calm / Light snow
Lake 8 -17 -11 T 36   X   Calm / Light snow
Lamar -4 -28 -18 T 20 X     Calm
Madison 7 -25 -22 0 27   X   Calm / Foggy
Mammoth 8 -10 0 T 18     X S@1-3mph
Old Faithful 5 -17 -3 T 42   X   SSW@1mph
Snake River 8 -12 -6 T 41   X   Calm / Light snow
Tower -2 -22 -13 T 20   X   Calm
West Entrance 5 -21 -16 T 36   X   Calm / Light snow
T=Trace / BC=Broken Clouds / OC=Overcast / SC=Scattered Clouds
All Temperatures are in °F ~ All Snow Depths are in Inches


Avalanche Information - from the Gallatin National Forest Avalanche Center

Mountain Weather:

It’s another cold morning with temperatures mostly in the negative single digits Fahrenheit though a few places near West Yellowstone and Cooke City reached the negative teens Fahrenheit. Winds increased since yesterday and were blowing 10-20 mph from the western half of the compass this morning. These winds were mostly confined to ridgetops except in the Bridger Range where they were blowing at all elevations. Today will have partly to mostly sunny skies. High temperatures will be about 10°F and winds will blow 10-20 mph from the West and Northwest. No significant snowfall is expected in the immediate future.

Snowpack and Avalanche Discussion:

The northern Madison Range:

A group of snowmobilers observed several avalanches and triggered one near Buck Ridge yesterday in the First Yellowmule drainage on North and Northeast facing slopes. They broke about 18-24 inches deep near a layer of buried surface hoar which is our primary concern. This layer is more widespread near Big Sky than any other part of the advisory area, and it has been stressed by this week’s new snow. Winds increased last night blowing from westerly directions and likely transported some snow adding further stress to the snowpack on leeward slopes. To ride in avalanche terrain today, look for slopes without wind deposited snow, then look slopes without buried surface hoar which exists in the upper 2 feet of the snowpack. It may be difficult to find visually but will readily show itself in stability tests.

Also, consider digging deeper to assess the strength of snow near the ground. It most places the lower half of the snowpack is strong, but a notable avalanche was triggered at the Yellowstone Club on Thursday. It occurred on an East facing slope without skier compaction near 8500 feet and broke on facets near the ground. This avalanche started in terrain with slope angles in the mid 30s and propagating into lower angle terrain. Facets near the ground are not a widespread problem but a good reminder of variability in the snowpack and a good reason to make thoughtful decisions following a big storm. For today careful snowpack evaluations are essential and the Avalanche Danger is rated CONSIDERABLE.

The Bridger, southern Madison and entire Gallatin Ranges, the Lionhead area near West Yellowstone, the mountains around Cooke City and the Washburn Range:

Yesterday Eric and I skied on Mt Ellis where we found stable conditions and discovered the importance of cold weather wax for our skis. It was a slow hike back to the car. We also found evidence of some faceting that likely occurred in mid-December. This faceted layer was not a concern for us on Mount Ellis, but it was an indication to me that isolated areas likely have a faceted layer in the upper 12-18 inches of the snowpack. Other areas like Hebgen Lake have no weak layers in the snowpack. A few areas like Flathead Pass and Bacon Rind have surface hoar from mid-December. Fortunately, there are many stable slopes lacking unstable weak layers, but don’t roll the dice. A quick snowpit and a couple of stability tests on a representative slope will let you know. Also watch for fresh wind slabs resting on low density new snow, a great combination for avalanches. Late yesterday afternoon the Bridger Bowl Ski Patrol noted lots of snow being transported by westerly winds. For today, the Avalanche Danger is rated CONSIDERABLE on wind loaded slopes steeper than 35 degrees and MODERATE on all others.

Gallatin National Forest Avalanche Center ~ Mammoth Weather Forecast

Yellowstone Seven Day Forecast on 01 January 2011 by the NWS Riverton, WY

Early This Morning: Mostly cloudy. Patchy ice fog. Occasional flurries. Lows -12°F to -18°F.

Today: Partly cloudy with a 20 percent chance of snow. Highs 0°F to 6°F. Lowest wind chill readings -27°F to -37°F in the morning.

Tonight: Partly cloudy in the evening then becoming mostly cloudy. A 20 percent chance of snow. Lows -6°F to -14°F.

Sunday: Not as cold. Partly cloudy. Slight chance of snow in the morning...then chance of snow in the afternoon. Highs 10°F to 16°F. Chance of snow 40 percent. Lowest wind chill readings -21°F to -31°F in the morning.

Sunday Night: Mostly cloudy with a 20 percent chance of snow. Lows -6°F to 2°F.

Monday: Partly cloudy with a 20 percent chance of snow. Highs 15°F to 21°F. Lowest wind chill readings -10°F to -20°F in the morning.

Monday Night: Partly cloudy with a 20 percent chance of snow. Lows -3°F to 3°F.

Tuesday: Partly cloudy with a 20 percent chance of snow showers. Highs 10°F to 16°F.

Tuesday Night: Partly cloudy with a 20 percent chance of snow showers. Lows -2°F to 6°F.

Wednesday: Partly cloudy with a 20 percent chance of snow showers. Highs 15°F to 21°F.

Wednesday Night: Partly cloudy with a 20 percent chance of snow showers. Lows 3°F to 9°F.

Thursday: Mostly cloudy in the morning then becoming partly cloudy. A 20 percent chance of snow showers. Highs 22°F to 28°F.

Thursday Night: Partly cloudy with a 20 percent chance of snow showers. Lows 7°F to 13°F.

Friday: Partly cloudy with a 20 percent chance of snow showers. Highs 25°F to 31°F.

Snowflake Hazardous Weather Snowflake Gibbon Falls Forecast Snowflake Mammoth Forecast Snowflake Midway Forecast Snowflake Norris Forecast Snowflake Old Faithful Forecast Snowflake

******** FOR CURRENT ROAD INFORMATION PLEASE CALL 307-344-2117 ********

Date: Saturday, January 01, 2011

Road Conditions
Road Section Status Conditions Public Access / Info
Gardiner to Mammoth YR STR STR
Mammoth to Tower YR STR STR
Tower to NE Entrance YR STR STR
Canyon to Lake Open Good Oversnow
Firehole Canyon Drive CLOSED - CLOSED
Grant to South Entrance Open Fair Oversnow
Junction to Chief Joseph Hwy CLOSED CLOSED CLOSED
Lake to East Entrance Open Fair Oversnow
Lake to West Thumb Open Good Oversnow
Madison to Old Faithful Open Good Oversnow
Madison to West Yellowstone Open Good Oversnow
Mammoth to Norris Open Good Oversnow
Norris to Canyon Open Good Oversnow
Norris to Madison Open Good Oversnow
Old Faithful to Grant Open Fair Oversnow

YR=Year Round / NR=No Restrictions / STA=Snow Tires Advised / STR=Snow Tires Required


# Poor road conditions - bare spots and melting snow - Restricted to Snowcoaches Only.

The park service plowing schedule for roads for the spring season.

Snow Depth Totals as reported at SNOTEL's
Station Depth (inches) Station Depth (inches)
Black Bear 86 Snake River Station 34
Blackwater 51 Sylvan Lake 46
Canyon 39 Sylvan Road 33
Evening Star 61 Thumb Divide 50
Grassy Lake 67 Two Ocean Plateau 64
Lewis Lake Divide 74 West Yellowstone 38
Madison Plateau 60 Whiskey Creek 46
Parker Peak 57 Wolverine 28

Back to the Yellowstone Daily Winter Reports or the Yellowstone Weather Page

Information provided by the National Weather Service and Yellowstone National Park Service

Yellowstone National Park by Page Makers, LLC © Copyright All Rights Reserved
I n d e x
Accessibility Earthquakes Maps Video Page
Address Email Newspaper Visitor Centers
Adult Programs Entrances Old Faithful Live WebCam Visitor Stats
Amphibians Entrance Fees Pets Volcano Observatory
Animals Fall Closure Phone Numbers Waterfalls
Backcountry Fish Picnic Areas Weather
Bear Management Fishing Fees Ranger Led Activities WebCams
Bear Sightings Fishing Regulations Reptiles Wildflowers
Biking Getting Here Reunions Winter Closing
Boating Hiking Rivers, Creeks & Streams Winter Opening
Books History Roads Winter Weather Reports
Butterflies Junior Ranger Program Schedule Wolf Project
Camping Lakes Search Page Wolf Sightings
Campground Maps Location Spring Opening Wolverine Help
Challenges Lodging Star Talks Yellowstone ~ the Name
Chat Page Lynx Help Trip Planner pdf Young Scientist
Clinics / Medical Mammal List Trip Reports Youth Conservation Corps
Not all who wander are lost by John Ronald Reuel Tolkien © Page Makers, LLC
Yellowstone National Park WebCams
Old Faithful Live All Old Faithful Old Faithful Static Old Faithful VC North Entrance Mt Washburn Mammoth YVO WebCam

Yellowstone Area Highway WebCams
Alpine Junction Hwy 89 (South) Monida Pass I-15 (North)
Bozeman Pass I-90 (North) Osborne Bridge Hwy 20 (West)
Henry's Lake North Hwy 20 (West) Raynolds Pass MT 87 (North or West)
Henry's Lake South Hwy 20 (West) Teton Pass WY 22 (South)
(North) = Closest Entrance to Yellowstone National Park.

State Road Reports
Idaho Utah
Montana Wyoming

Entrance Cities and Gateway Towns
Gardiner, Montana Silver Gate, Montana West Yellowstone, Montana Cooke City, Montana
Livingston, Montana Cody, Wyoming Jackson Hole, Wyoming Yellowstone National Park

The Great Outdoors Net Great Outdoor Recreational Places
Gardiner, Montana World Humanity

Contact Us

by John William Uhler

Back to: Yellowstone Up Close and Personal

Copyright © 1995 - 2014 Page Makers, LLC and Yellowstone Media ~ All Rights Reserved