National Weather Service United States Department of Commerce

Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

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Last Map Update: Sun, Jan 18, 2026 at 8:38:19 pm MST

High pressure will keep the Northern Rockies under a stagnant weather pattern through early next week. Expect valley fog/freezing fog (dense at times) leading to low visibility and icy patches on roads/sidewalks. Fog may lift into low clouds at times. Also, air quality will be degrading with time. Please check for local burn bans.
❄️ A pattern change is on the horizon! We are tracking increasing chances for snow and colder temperatures across the Northern Rockies (especially NW Montana) from Jan 23-25. This is about a day slower than previous forecasts. The transition will occur as arctic air sets up along the Continental Divide. While there is still uncertainty regarding the westward extent of the coldest air, residents should prepare for significantly colder conditions and potential travel impacts from valley snow. Stay tuned for updates as we get closer!

 

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