2019-20 Ski Season Progress Report as of March 15, 2020

October 2019 was exceptionally cold in the Northern Rockies of both US and Canada. There were several small storms in northern regions and particularly in Colorado. The first half of November was bone dry in the western US with no area receiving more than 3 inches snow and most getting zero. Threfore most October snow melted out and is not included in the table of snow totals below. During the third week of November a moderate 1-2 foot storm came mostly through the Southwest while a few inches fell in some northern regions. During Thanksgiving week a strong storm dumped 2-4 feet in California and 4-6 feet in Utah. During the first week of December California got another 3-4 feet and much of western Canada 2 feet with other regions averaging no more than a foot. There was scattered snow over most of the West during the second week of December with the most falling (2-3 feet) in Utah and Colorado. The Pacific Northwest and western Canada were the focus of storms during the third week of December, but the Northwest and much of the US northern Rockies were still seriously deficient in snow for the holidays. California and Utah's Cottonwood Canyons had the most snow at Christmas. The Southwest and some of western Canada had strong storms over the holidays while other regions had lesser amounts.

In early January the storm track shifted north, dumping in the Northwest, Northern Rockies and western Canada. This pattern continued for the entire month, dumping heavily over the northern regions and as far south as Oregon and Utah. During the first week of February a dense atmospheric river tracked from Washington to northern Utah and Colorado. These states were overall favored throughout February, with other ski regions slighly below average except for California, which had its driest February on record. Nearly all western regions got 1-2 feet of snow during the first half of March. A major storm is hitting the Sierra now, likely to total 3-5 feet.

As of the evening of March 15, the vast majority of US ski areas are closed due the COVID-19 epidemic. Several did not announce until after the close of the ski day today. Areas below where I list a percent of terrain open today should be checked daily to see if they indeed remain open. By contrast, nearly all western Canada areas other than Whistler/Blackcomb and Silver Star remain open. My guess is that they will remain open but that Canada might close its border if the epidemic in the US worsens significantly. There is also a good chance that many of the closed US areas will stop measuring snow and thus 2019-20 records may end up incomplete.

California: Mt. Rose opened its beginner lift weekends starting Oct. 25 and Mammoth opened Nov. 9. The first natural Sierra snow Nov. 20 was only 2-6 inches but 2-3 feet fell over Thanksgiving with another 2-3 feet later that weekend. 3-4 feet during the first week of December brought Mammoth to full operation with the most open terrain in North America, while low elevations at Tahoe saw rain. After about 2 feet in mid-December, most terrain at Tahoe was open for Christmas with base depths of 4-6 feet. Late November snowfall was 3-4 feet in Southern California (soon degraded by rain) and 6 feet in Arizona, in full operation by early December. The post-Christmas storm dumped up to 3 feet in Southern California and Arizona but mostly missed the Sierra. Light rain degraded surfaces below 8,000 feet at New Year's but a few inches of snow fell later north of Tahoe. A few modest January storms totalled 3+ feet at some Tahoe areas but only 10 inches at Mammoth. The first half of February was dry with upslope winds degrading exposed surfaces. No one in the Sierra got more than 4 inches new snow during the record dry month. March began with about a foot of new snow and the current storm has dumped 2+ feet already and may total twice that much. See Current California Ski Conditions for more details on Southern California and Mammoth.

Pacific Northwest: In October Hood Meadows had 31 inches snow and Mt. Bachelor had 13 inches but the base melted out by mid-November. Late November snow averaged 2 feet in Oregon declining to less than a foot farther north. This was the driest November on record at Whistler and in Seattle. Despite 2 feet in the first half of December and 3 feet before Christmas, this region was still far behind schedule, with Whistler having record low ~30% open terrain over the holidays. Mt. Baker opened Dec. 14 and Stevens Pass Dec. 21. More Northwest terrain opened during the second half of December, but the holidays were low tide with base depths averaging 3 feet. In early January it snowed 5-6 feet at Whistler and in Washington and 3-4 feet in Oregon. After avalanche control Whistler reached full operation January 16. It snowed another 4-5 feet over the entire region in mid-January. Late January snowfall ranged from 3 feet in Oregon to 5 feet from Stevens north to Whistler. Surfaces were difficult with rain to 5,000+ feet at the end of January, but it dumped 5 feet in Washington in the first half of February and about half as much in the rest of the region. During the second half of February it snowed 4 feet in Washington and about half as much elsewhere. Early March snowfall has been two feet with temperatures below average.

Canadian Rockies and Interior B.C.: October snowfall was widespread in this region but November snowfall was significant only well north of the US border. Lake Louise opened a week early on November 1, and had the most terrain open in North America in November. Most areas have received 2-3 feet in the first half of December and 3 feet the week before Christmas. Overall base depths were 4-5 feet and most terrain was open for the holidays. Silver Star and Sun Peaks reached 90+% open by Christmas. The Okanagan areas got 2+ feet of snow during the holiday week with lesser amounts farther south and east. The early January Northwest storms dumped 3-4 feet at many of these areas. Mid-January snowfall ranged from a foot at the Banff areas to 4 feet at Fernie and Whitewater. 1-2 feet fell in late January and 2-3 feet in the first half of February. Most areas got about 2 feet of snow during the second half of February with lower amounts near the US border. Early March snowfall has been 2-3 feet with cold temperatures.

U. S. Northern Rockies: Grand Targhee had 40 inches October snowfall but postponed opening to November 29 due to the dry month. Late November snow was about 2 feet in Wyoming and Sun Valley but less than a foot elsewhere. First half of December snow was 3 feet in the Tetons and 2 feet farther north. About a foot fell during each of the last two weeks of December. Holiday base depths were 4 feet in the Tetons but only 3 feet farther north. The early January Northwest storms were 5 feet in the Tetons and 3 feet farther north. Mid-January snowfall averaged 2-3 feet. Late January snowfall was 3 feet in the Tetons and 2 feet farther north. The early February storm dumped 4-6 feet at Brundage, Bridger and in the Tetons, with no more than half as much elsewhere. Latter half of February snowfall ranged from 2+ feet in the Tetons to less than a foot in Idaho with Montana in between. Early March snowfall was 2 feet in the Tetons and near the Canadian border and one foot elsewhere. Big Sky was 90+% open from late January to March 15.

Utah: The October cold reached as far south as Utah, setting records near the end of the month. The Snowbird SNOTEL's 40 inches of October snowfall shrunk to a 9 inch base before a few inches fell during the third week of November. The Thanksgiving week storm dumped 4-6 feet, bringing early season base depths to 3-5 feet. More terrain opened in early December once snow was stabilized plus up to a foot of new snow. 3 feet of snow the second week of December opened most terrain in the Cottonwoods on a 5-6 foot base. About two feet fell during the second half of December in the Wasatch but nearly twice as much in the south at Brian Head. Early January storms totalled 3-4 feet in the Cottonwoods and 2 feet elsewhere. Mid-January storms totalled 5 feet in the Cottonwoods and 3-4 feet elsewhere. Late January storms averaged 3 feet in the Cottonwoods and half as much elsewhere. 4 feet from the early February storm closed Little Cottonwood for 2.5 days, while other areas got half as much snow. Second half of February storms were 2+ feet in the Cottonwoods and half as much elsewhere. First half of March snowfall was 2 feet in southern Uath, 1.5 feet in the Cottonwoods and less than a foot elsewhere.

Northern and Central Colorado: Early openings on snowmaking were A-Basin Oct. 11, Keystone Oct. 12 and Loveland Oct. 25. Most of the 3+ feet of October snow was lost during the dry first half of November so open terrain from Thanksgiving into early December was well below average on base depths averaging a bit under 2 feet after average snowfall during the second half of November and less than a foot during early December. Three feet of snow fell Dec. 12-14. Only a foot fell during the second half of December but 3 foot base depths and open terrain were average over the holidays. Early January storms were about 3 feet at Steamboat and averaged half as much elsewhere. Mid-January snowfall was 1-2 feet and late January snowfall 2+ feet. The rare atmospheric river dumped 4-5 feet of dense snow in early February. Second half of February snowfall was 2-4 feet and early March one foot. A-Basin was 90+% open since mid-January.

Southern and Western Colorado: The Rocky Mountain Biological Lab at Gothic (between Crested Butte and Aspen) had 20 inches October snowfall but lost its base during the dry first half of November. Wolf Creek had 22 inches October snowfall and Monarch 38 inches, so both opened by Nov. 1. The Southwest was the region most favored during the third week of November plus about 3 feet of snow during the ensuing two weeks. A mid-December storm averaged 2 feet at most areas but 4 feet at Monarch. Base depths were 3-4 feet at most areas and 5 feet at Wolf Creek and Monarch after up to one foot of snow the week before Christmas. The Southwest storm after Christmas dumped 4 feet at Wolf Creek and about 2 feet at other southern areas. In early January it only snowed a few inches in the Southwest but about a foot farther north. Mid-January snowfall was 3 feet at Wolf Creek and 1-2 feet elsewhere. Part of Crested Butte's North face opened January 15 and Taos' Kachina Peak lift opened January 18. Late January snowfall averaged 1 foot and first half of February 2 feet. Second half of February snowfall was two feet from Aspen to Monarch but only a foot in the Southwest. Early March snowfall was 1-2 feet.

Northeast: The first openings were Killington Nov. 3, Mt. St. Sauveur Nov. 8 and Sunday River Nov. 9. Early November weather was favorably cold but there was mixed precipitation late in the month. Terrain expanded some in early December with 1.5 feet of new snow. Rain on Dec. 14 depressed trail counts. There was some recovery before Christmas, but a tough holiday week with some freezing rain. Conditions in early January improved with 1-2 feet of new snow, but it rained the second weekend. Conditions improved with up to 2+ feet of snow over MLK weekend and another foot later in the month. The first half of February was excellent with cold weather and 3 feet of snow in northern areas. Northern areas got another 3 feet during the second half of February but totals were less than half as much farther south with some rain as well. Early March had considerable melt/freezing with trail counts declining during the second week. Percents open: Hunter, Okemo, Sunday River, Sugarloaf, Tremblant closed, St. Anne 3/15 last day.

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