Winter Weather Advisory issued February 14 at 11:52AM MST until February 15 at 11:00AM MST by NWS Riverton WY

* WHAT…Heavy snow. Additional snow accumulations between 3 and 5
inches across the north half of the Park, with higher amounts of 4
to 8 inches for southern portions of the Park. Southwestern YNP
including Pitchstone Plateau may see additional amounts up to 12
inches. Additional accumulations around Mammoth and the Lamar
Valley will range from 1 to 3 inches.

* WHERE…Yellowstone National Park.

* WHEN…Until 11 AM MST Saturday.

* IMPACTS…Travel will be very difficult, especially in the
backcountry.