2020-21 Ski Season Progress Report as of January 31, 2021

October 2020 snowfall was mostly in Canada. In late October a storm dipped down the Continental Divide into Colorado and New Mexico. Snowfall totals are since November 1 aside from Wolf Creek and the Banff areas which opened significant terrain based upon October snow. Openings at some areas were delayed until enough lifts/terrain can be opened for COVID-19 social distancing despite an above average first half of November for snow. The first widespread storms hit the West first weekend of November, with South Tahoe, Utah and Wolf Creek being the big winners. During the second week of November the Northwest and US Northern Rockies got 3-4 feet, with lesser amounts in adjacent regions. Third week of November snowfall hit mainly the Northwest and western Canada. Areas over half open for Thanksgiving were Wolf Creek 98%, Lake Louise 67%, Sunshine 62%, Sun Peaks 77%, Mt. Baker 82%, Crystal 56%, Lookout Pass 58% and Grand Targhee 60%. Note that aside from Wolf Creek's microclimate, all of these areas are among those most favored by the ongoing La Nina.

A massive ridge of high pressure built in western North America in late November, lasting nearly two weeks. Normal weather and average snowfall returned to most of the West in mid-December though a few snowy microclimates got much more. However, many areas remained 2-3 weeks behind schedule on snow so open terrain was still limited during the holidays. COVID-19 restrictions based upon open lifts/terrain mean that many destination resorts should be avoided until more lifts and terrain are open. At New Year's, areas half or less open with bases under 3 feet included Summit County Colorado, Utah outside the Cottonwood Canyons and Bridger/Big Sky in Montana. During the first week of January the Pacific Northwest was pounded with snow, with lesser amounts in adjacent regions. Regions farther south got less than a foot. The second week of January was worse, with a warmer storm bringing much rain along with snow to the Northwest while regions farther south stayed dry. Many areas remained with low tide conditions on bases less than 3 feet and only in partial operation over MLK weekend.

There was scattered snow during the third week of January. At the end of the week it snowed 2+ in Utah and parts of the Southwest. During the last week of January an atmospheric river hit California with 5-8 feet of snow while lesser amounts spilled over into adjacent regions.

California: There was no snow in October. The early November storm was 8-10 inches in North Tahoe and peaked SW of the lake with 20 inches at Sierra-Tahoe. Mammoth opened 5% Nov. 13 with 14 inches new plus cold temperatures for snowmaking. After a few more inches before Thanksgiving, the next two weeks were dry. There was 1-2 feet in mid-December and about a foot later in the month, so overall about half of terrain was open at Christmas. California lodging was limited to residents in December due to COVID-19. The lodging restrictions were eased for Tahoe second week of January and Mammoth two weeks later. With base depths averaging 3 feet, advanced terrain was limited and coverage thin through MLK weekend. There was a foot of snow the following weekend in the Sierra, 2 feet in Southern California and 4 feet in Arizona. Then the atmospheric river dumped 5-6 feet at Tahoe and 8 feet at Mammoth during the final week of January, while SoCal and Arizona got another 2 feet. Sierra base depths are 5-8 feet. See Current California Ski Conditions for more details on Southern California and Mammoth.

Pacific Northwest: Crystal, Mt. Hood and Mt. Bachelor reported minimal snow through the first week of November. But it dumped heavily the rest of November. The first week of December was dry but it snowed 5-7 feet over the rest of December, yielding base depths of 10 feet at Mt. Baker and 5-7 feet elsewhere. During the first week of January it dumped 3 feet in Oregon and 5+ feet in Washington and at Whistler. There was considerable rain during the second week of January though Whistler and some of Washington also got another 2 feet of snow. Ungroomed surfaces were difficult for awhile until it snowed 1.5-2.5 feet during the final week of January.

Canadian Rockies and Interior B.C.: October snowfall was significant only in this region, with gradual additions in early November but more through the rest of the month. There was 4-6 feet of consistent snowfall in December. Sun Peaks and Silver Star have been 90+% open since mid-December. Western Canada had the best holiday conditions on an average base of 5 feet. The early January Northwest storm dropped about 2 feet at most areas but only a foot around Banff. Second week of January snow averaged a 1+ foot but most areas escaped the rain farther south. Second half of January snowfall averaged 1.5 feet in interior B.C. but less than a foot at the Banff areas.

U. S. Northern Rockies: Montana had October snow but mostly east of the Continental Divide, 45 inches at Red Lodge. Great Divide opened a couple of runs with snowmaking assistance Oct. 31 but lost them to warm weather the next week. Second week of November it snowed 3-4 feet in Montana and Wyoming and 2 feet in Idaho. It snowed 1-2 feet during the second half of November. December snowfall was 5 feet in the Tetons and 3-4 feet elsewhere. Holiday base depths were 4+ feet in the Tetons, but averaged 3 feet elsewhere. Bridger opened late and Big Sky was only 55% open at New Year's, 73% now. Sun Valley is 74% open. The early January Northwest storm snowed about 2 feet in Idaho and the Tetons and one foot in Montana. During the second week of January the interior Northwest areas got mix of rain and a foot of snow while it snowed just a few inches farther south. During the second half of January it snowed only 1+ foot in Montana and the interior Northwest, but dumped 2.5 feet in central Idaho, 4 feet in the Tetons and 5 feet at Sun Valley.

Utah: Utah was extremely dry in October but got 2+ feet over the first weekend of November and a similar amount through the second week. There was less than a foot during the second half of November and first week of December but it snowed 4-5 feet in the Cottonwoods but less than 2 feet elsewhere during the rest of December. Holiday base depths were close to 4 feet in the Cottonwoods but barely 2 feet at other Utah areas where open terrain was severely limited through MLK weekend after no more than a foot during the first half of January. Two storms during the second half of January totaled 4+ feet in the Cottonwoods and 3+ feet elsewhere.

Northern and Central Colorado: This was possibly the first October in over 25 years with no ski area open despite a late October storm averaging 10 inches. The dry summer may have limited water for snowmaking at A-Basin and Loveland. Keystone opened Nov. 6, A-Basin Nov. 9, Breckenridge and Loveland Nov. 13. November snowfall was below average so with social distancing requirements Copper opened Nov. 30, Steamboat Dec. 1 and Winter Park Dec. 3. December snowfall was 2-4 feet but overall only about half of terrain was open for Christmas. Advanced terrain remained very limited past mid-January with base depths at many areas still under 3 feet at MLK after just a few inches during the first half of January. It snowed about a foot per week during the second half of January. A-Basin is 61% open.

Southern and Western Colorado: A late October storm dropped 13 inches at the Gothic Snow Lab and 22 inches at Monarch and Taos. Wolf Creek got 39 inches in October and with localized southwest storms reached 98% open by November 15. The rest of the region had a below average November and all had a dry early December. It snowed an average 4 feet during the rest of December but little during the first half of January. At MLK Wolf Creek had a 5 foot base while most other areas averaged 3 feet. In late January it snowed 6 feet at Wolf Creek, 4 feet at Purgatory but only 2 feet farther north. Taos is 81% open on a 59-inch base after 3 feet of snow in late January.

Northeast: Northern Vermont got 1+ foot at the start of November but most of the month was warm. Thus openings were delayed to Nov. 13 at Killington and Nov. 21 at Sunday River and Sugarloaf, with social distancing also being a factor. Early December progress was slow with mixed snow and rain resulting in low trail counts. The mid-December Nor'easter hit southern New England hard but did not snow much farther north. Trail counts were reduced by heavy rain over Christmas. 2016 was the only year in over 20 years with less Northeast terrain open at New Year's. There was gradual expansion during the first half of January though with only about 1.5 feet of new snow. Up to 3 feet of snow during the third week of January finally opened most terrain. Conditions remain excellent with cold weather for the rest of January. Percents open: Okemo 99%, Hunter 84%, Sunday River 90%, Sugarloaf 60%, Tremblant 96%, Ste. Anne 73%.

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