SYNOPSIS: A significant winter storm over the Great Basin will likely impact much of the area beginning late Tuesday Night with snow, heavy at times, possible through Thanksgiving Day.
Colder upslope flow will develop east of the Continental Divide Wednesday with areas form Casper to Lander and southward looking most favorable for the heaviest snow amounts.
Strong northeast winds will likely cause areas of blowing and drifting snow, with areas of very limited visibility across portions of central and southern Wyoming, including Interstate 80. The details of this upcoming winter storm are still coming into view, but those who are planning to travel this holiday should pay close attention to the timing and expected impacts of this storm.
Click Loop To Enlarge
The above loop shows what one of our model solutions - the Global Forecast Model (GFS) is advertising for accumulating snow amounts for this storm. It would not be a great idea to focus on the exact amounts at this time, but if you are curious, the red shaded areas show over 5" of storm total accumulation, with a bulls-eye of over a foot in the central Wind River Basin, along portions of the Interstate 80 corridor, and in the Tetons.
What you should note is the large area that is expecting significant, disruptive snow accumulations with the primary impact form the storm expected on two of the busiest travel days of the year, the day before Thanksgiving through Thanksgiving Day.