Weather Alerts For Yellowstone Lake, WY

# HEADLINE -------------------- WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 11 PM MDT THIS EVENING # DETAILS -------------------- WHAT Snow. Additional snow accumulations of 1 to 4 inches with up to 1 inch of additional snow accumulation near Mammoth and the west entrance. Winds gusting between 20 and 35 mph. WHERE Yellowstone National Park. WHEN Until 11 PM MDT this evening. IMPACTS Travel could be difficult. ISSUED AT Thursday, April 23, 2026 at 1:21 PM MDT ISSUED BY National Weather Service Riverton WY HEADER URGENT - WINTER WEATHER MESSAGE # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- Slow down and use caution while traveling. For graphical depictions of the snowfall forecast, including the official NWS forecast, high end amounts, and low end amounts, visit https://weather.gov/riw/winter. For current road conditions across Yellowstone National Park, visit https://nps.gov/yellowstone. # AREAS AFFECTED -------------------- Yellowstone National Park Including the cities of Old Faithful, Mammoth, and Lake