Chris Tomer is a renowned meteorologist specializing in mountain weather and outdoor adventure forecasting. Known for his precise and detailed predictions, he works closely with skiers, climbers, and outdoor enthusiasts to provide real-time weather updates. His expertise ensures safety and optimal conditions for adventures, making him a trusted voice in the outdoor community.
Watch the full forecast but here are some highlights of Chris’ winter weather forecast.
By close of business today, a storm system will move through the interior states, with snow affecting Wyoming, Big Sky, and parts of the Wasatch, before shifting into Colorado. A major Pacific storm system will bring significant moisture to the West Coast between November 20th and 23rd, with an atmospheric river slamming Northern California, Oregon, and Washington. Heavy snow will hit the Sierra, Cascades, and interior regions, potentially causing flooding in lower elevations.
From November 20th to 27th, storms will continue delivering significant snowfall. Expect 1–2 feet in Mammoth, 3 feet in Tahoe, and substantial accumulation over Mount Shasta. Oregon, Washington, and British Columbia could see 1–3 feet of snow in high elevations, while Idaho and the Tetons anticipate similar totals. Colorado’s western slopes and the San Juans may receive 1–2 feet. The Wasatch remains uncertain, with potential for increased totals if the storm band shifts northward.
This marks the season’s first atmospheric river, promising a powerful start to winter across the western United States.