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: Wednesday - January 05, 2011

Station Max Temp Min Temp Pres Temp New Snow Snow Depth BC OC SC Present Conditions
Canyon 17 -10 8 2 38   X   Calm
East Entrance 18 -2 16 1 31   X   Calm / Light snow
Grant Village 15 -14 10 2 46   X   Light snow
Lake 16 -3 11 3 38   X   Calm / Light snow
Lamar 18 -1 13 3 23   X   Calm
Madison 12 -12 12 3 29   X   Calm / Light snow
Mammoth 22 9 18 T 18   X   SE@1-4mph
Old Faithful 14 10 14 0 32   X   W@3mph / Gust 7mph
Snake River 15 -10 12 3 42   X   Light snow
Tower 14 -2 14 T 13   X   Calm
West Entrance 14 1 12 5 39   X   SW breeze
T=Trace / BC=Broken Clouds / OC=Overcast / SC=Scattered Clouds
All Temperatures are in °F ~ All Snow Depths are in Inches

Road Conditions
Road Section Status Conditions Public Access / Info
Gardiner to Mammoth YR STR STR
Mammoth to Tower YR STR STR - Blowing / Drifting
Tower to NE Entrance YR STR STR - Blowing / Drifting
Canyon to Lake Open Good Oversnow
Firehole Canyon Drive Open - Oversnow - Snowcoaches only in the morning
Grant to South Entrance Open Good 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.

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


Yellowstone Seven Day Forecast on 05 January 2011 by the NWS Riverton, WY

Today: Breezy. Snow likely. Snow accumulation around 1 inch. Total snow accumulation 1 to 2 inches. Highs 17°F to 23°F. Southwest winds 15 to 20 mph. Chance of snow 70 percent. Lowest wind chill readings -10°F to -20°F in the morning.

Tonight: Cloudy with a 50 percent chance of snow. Lows 7°F to 13°F. Southwest winds around 15 mph.

Thursday: Cloudy with a 50 percent chance of snow. Highs 23°F to 29°F. Southwest winds around 15 mph early in the morning.

Thursday Night: Mostly cloudy with a 40 percent chance of snow. Patchy fog after midnight. Lows 11°F to 17°F.

Friday: Mostly cloudy. Patchy fog in the morning. Chance of snow in the morning...then slight chance of snow showers in the afternoon. Highs 25°F to 31°F. Chance of snow 30 percent.

Friday Night: Cloudy with a 50 percent chance of snow. Lows 11°F to 17°F.

Saturday: Snow likely. Moderate snow accumulations. Highs 21°F to 27°F. Chance of snow 70 percent.

Saturday Night: Colder. Mostly cloudy with a 40 percent chance of snow. Lows -4°F to 4°F.

Sunday: Colder. Mostly cloudy with a 30 percent chance of snow. Highs 7°F to 13°F.

Sunday Night: Colder. Mostly cloudy with a 20 percent chance of snow. Lows -4°F to -14°F.

Monday: Mostly cloudy with a 20 percent chance of snow. Highs 5°F to 11°F.

Monday Night: Mostly cloudy in the evening then becoming partly cloudy. A 20 percent chance of snow. Lows -2°F to -8°F.

Tuesday: Partly cloudy with a 20 percent chance of snow. Highs 7°F to 13°F.

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

Snow Depth Totals as reported at SNOTELs
Station Depth (inches) Station Depth (inches)
Black Bear 86 Snake River Station 28
Blackwater 49 Sylvan Lake 46
Canyon 36 Sylvan Road 32
Evening Star 58 Thumb Divide 46
Grassy Lake 72 Two Ocean Plateau 61
Lewis Lake Divide 70 West Yellowstone 35
Madison Plateau 57 Whiskey Creek 45
Parker Peak 58 Wolverine 27

Avalanche Information - from the Gallatin National Forest Avalanche Center this report is by Doug Chabot

Mountain Weather:

At 6:00 AM the Yellowstone Club is showing ten inches of new snow. All the other ski areas got six inches with other sites also reading 3-6 inches. Temperatures warmed into the teens as wind speeds increased out of the southwest averaging 20-30 mph with gusts reaching 40-50 mph. Under mostly cloudy skies mountain temperatures will climb into the low 20s today with strong southwest winds. More flurries this morning and again later tonight will drop an additional two to four inches.

Snowpack and Avalanche Discussion:

The northern Madison Range:

Up to ten inches of light, 5% powder, fell in the mountains around Big Sky last night. Southwest winds are blowing 20-30 mph which is moving the new snow into soft slabs near the ridgelines. The northern Madison Range has a layer of buried surface hoar 12-18 inches deep on many slopes and this new snow will keep the avalanche danger heightened. We received three observations from these mountains yesterday: one wrote about collapsing and surface hoar propagating fractures in a snowpit on Yellow Mountain; another had compression tests failing with light taps near Beehive Peak while a third found stable snow and no surface hoar on west-facing slopes in Beehive Basin. Divergent reports like these can occur as the weak layer begins to strengthen and loses its consistency throughout a region. Although this ultimately makes finding the instability trickier, it's a trend we like to see. Given the new snow, wind and buried weak layer, the Avalanche Danger today is rated CONSIDERABLE on all wind-loaded terrain. On slopes not affected by the wind the Danger remains MODERATE.

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

Three to six inches of light density powder has fallen at most SNOTEL sites which are also measuring .2-.4 inches of Snow Water Equivalent (SWE). The new snow will be drifted into soft slabs on the ridgelines and easily triggered, but not step down into older snow. The avalanche danger will be spiked only on wind-loaded terrain since most ranges have a strong snowpack. Mount Ellis, Teepee Creek, Lionhead, and Cooke City have layers that are bonding well together. A lone blip in this story was reported by a skier in Taylor Fork in the southern Madison Range yesterday. He noted collapsing and found surface hoar buried a foot deep. On one hand, this is good news because we know the instability is not widespread. On the other hand, it shows that we still need to be on the lookout for buried weak layers. Luckily it's only 12 inches deep and we can find it with hand pits.

Today, it's likely a person could trigger a slide on wind-loaded slopes, so I'm rating the Avalanche Danger CONSIDERABLE on this terrain. For slopes without wind deposits, the Avalanche Danger is rated MODERATE on all slopes steeper than 35 degrees while lesser angled slopes have a LOW Danger.

Information provided by Doug Chabot, Mark Staples, and Eric Knoff from the Gallatin National Forest Avalanche Center.

For detailed Avalanche Terms lists here, please see the Avalanche Glossary.

Avalanche Danger Scale

Gallatin National Forest Avalanche Center ~ Mammoth Weather Forecast

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

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