Winter Weather Advisory issued February 13 at 12:22PM MST until February 15 at 11:00AM MST by NWS Riverton WY

* WHAT…Heavy snow. Total snow accumulations between 4 and 7 inches
across the north half of the Park, with higher amounts of 8 to 16
inches for southern portions of the Park. Southwestern YNP
including Pitchstone Plateau may see amounts of 1 to 3 feet.
Accumulations around Mammoth and the Lamar Valley will range from
1 to 4 inches.

* WHERE…Yellowstone National Park.

* WHEN…Until 11 AM MST Saturday.

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