Daily Winter Weather Report
Date: Tuesday - December 21, 2010
| Station | Max Temp | Min Temp | Pres Temp | New Snow | Snow Depth | BC | OC | SC | Present Conditions |
| Canyon | 15 | -7 | -3 | T | 33 | X | Calm | ||
| East Entrance | 26 | 3 | 13 | 0 | |||||
| Grant Village | 26 | -7 | -5 | 1 | 52 | X | |||
| Lake | 22 | 7 | 13 | T | 36 | X | S@3mph | ||
| Lamar | 24 | -9 | 17 | 0 | 13 | ||||
| Madison | 14 | -18 | -18 | 0 | 25 | X | Calm / Clear | ||
| Mammoth | 28 | 8 | 17 | T | 13 | ||||
| Old Faithful | 23 | -15 | -15 | T | 28 | X | Calm / Clear | ||
| Snake River | 29 | -3 | 16 | 0 | 40 | ||||
| Tower | 33 | -4 | -2 | T | 19 | X | S@10-15mph | ||
| West Entrance | 27 | -9 | 10 | 0 | 31 | SSE@4mph |
SPECIAL INFORMATION
Avalanche Information
The northern Madison Range, the mountains around Cooke City and the Washburn Range: With new snow and wind pushing the snowpack to its breaking point, a HIGH avalanche danger exists on all wind loaded slopes. Slopes that have not received wind loading have a CONSIDERABLE avalanche danger.
The southern Gallatin and Madison Ranges and the Lionhead area near West Yellowstone: Avoiding high probability areas such as steep rollovers, avalanche run out zones, wind loaded slopes, and terrain traps is advised. In order to ski or ride in avalanche terrain safely today, cautious route finding and conservative decision making is essential. Today dangerous avalanche conditions exist and the avalanche danger is rated CONSIDERABLE.
Yellowstone National Park Weather Forecast on 21 December 2010 by the NWS Riverton, WY
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Today: Mostly cloudy with a 20 percent chance of snow in the morning...then partly cloudy in the afternoon. Highs 21°F to 27°F. Tonight: Partly cloudy. A 30 percent chance of snow after midnight. Lows 9°F to 15°F. Wednesday: Cloudy with a 50 percent chance of snow. Highs 26°F to 32°F. Wednesday Night: Mostly cloudy. Slight chance of snow in the evening...then chance of snow after midnight. Lows 13°F to 19°F. Chance of snow 40 percent. Thursday: Cloudy with a 50 percent chance of snow. Highs 26°F to 32°F. Thursday Night: Mostly cloudy with a 20 percent chance of snow. Near steady temperature in the lower 20s. Friday: Mostly cloudy in the morning then becoming partly cloudy. Highs 24°F to 30°F. Friday Night: Partly cloudy. Lows 11°F to 17°F.
Saturday Night: Partly cloudy. Lows 15°F to 21°F. Sunday: Partly cloudy in the morning then becoming mostly cloudy. A 20 percent chance of snow. Highs 23°F to 29°F. Sunday Night: Colder. Mostly cloudy with a 30 percent chance of snow. Lows 8°F to 14°F. Monday: Mostly cloudy with a 30 percent chance of snow. Highs 19°F to 25°F.
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******** FOR CURRENT ROAD INFORMATION PLEASE CALL 307-344-2117********
Date: Tuesday, December 21, 2010
| 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 |
| Beartooth Highway | CLOSED | CLOSED | CLOSED |
| Canyon to Lake | Open | Fair | Oversnow |
| Grant to South Entrance | Open | Poor | Oversnow |
| Junction to Chief Joseph Hwy | CLOSED | CLOSED | CLOSED |
| Lake to East Entrance | 12/22 | Closed | Closed |
| 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 | Fair | Oversnow |
| Norris to Canyon | Open | Good | Oversnow |
| Norris to Madison | Open | Good | Oversnow |
| Old Faithful to Grant | Open | Good | Oversnow |
YR=Year Round / NR=No Restrictions / STA=Snow Tires Advised / STR=Snow Tires Required
* NOTE: CLOSED FOR THE SEASON.
# Poor road conditions - bare spots and melting snow - Restricted to Snowcoaches Only.
The park service plowing schedule for roads for the spring season.
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 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) |
| State Road Reports | |
|---|---|
| Idaho | Utah |
| Montana | Wyoming |
| Gardiner, Montana | Silver Gate, Montana | West Yellowstone, Montana | Cooke City, Montana |
| Livingston, Montana | Cody, Wyoming | Jackson Hole, Wyoming | Yellowstone National Park |
| Links | |
|---|---|
| The Great Outdoors Net | Great Outdoor Recreational Places |
| Gardiner, Montana | World Humanity |
by John William Uhler
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