Winter Weather Advisory issued December 14 at 12:07PM MST until December 15 at 5:00PM MST by NWS Riverton WY

* WHAT…Snow. Total snow accumulations between 2 and 6 inches
expected for a majority of the Park. Higher totals are expected
for Madison and Pitchstone Plateaus, where 20 to 30 inches are
expected.

* WHERE…Yellowstone National Park.

* WHEN…Until 5 PM MST Sunday.

* IMPACTS…Travel could be very difficult to impossible. Travel in
the backcountry is not recommended.

* ADDITIONAL DETAILS…Total snow accumulations of 8 to 13 inches
expected near Old Faithful and accumulations of 1 to 3 inches
expected near Mammoth.