JACKSON, Wyo. – Get ready for a snowy Memorial Day if you plan on traveling to Yellowstone or across Teton or Togwotee Passes. Rain has been falling across the region for much of the weekend so far with snow levels remaining confined to the higher elevations.
However, colder arriving on Sunday and Monday will result in a changeover to heavy, wet snow down to 7,500-8,000 feet with snow levels dipping as low as 6,500 feet by Monday morning.
The National Weather Service in Riverton has issued a Winter Weather Advisory for Yellowstone National Park and the Teton and Gros Ventre Ranges from 6 p.m. Sunday through 3 p.m. Monday. Most of the accumulating snow in the Tetons will happen on Sunday and Sunday night while snow will persist across Yellowstone through much of the day on Monday.
Snow totals above 7,500 feet in the Tetons and Yellowstone from Sunday through Monday will range from 4-12 inches and snowy/slushy conditions can be expected over Teton Pass and Togwotee Pass from Sunday evening through Monday morning.
Roads will also be impacted across most of Yellowstone National Park from late Sunday through the morning hours on Monday, and some road closures are possible as well, at least for higher elevation areas.
The highest impacts from this late season winter storm will occur east and northeast of Jackson Hole along the crest and eastern slopes of the Continental Divide where Winter Storm Warnings are in effect from Sunday morning through midday Tuesday.
The Beartooth Range will be hit the hardest where 1-3 feet of snow is forecasted above 8,000 feet, while the Absaroka Range, Big Horn Range, and eastern slopes of the Wind River Range above 8,000 feet will pick up 1-2 feet of snow.
Alan Smith, Meteorologist