JACKSON, Wyo. — Buckrail photographer Nick Sulzer was up early to catch the morning glow on the Tetons on Tuesday, Dec. 10.

The sun-lit tip of the Grand Teton illuminated the newest layer of snow on the mountains.

Photo: Nick Sulzer // Buckrail

With temperatures reaching below freezing, a moose’s breath could be seen lingering in the air. A bull moose in the distance gave ample space to the cow moose standing still in the frosty sage brush.

Photo: Nick Sulzer // Buckrail

The moose then appeared to be staring off towards the horizon and the low hanging clouds stretched across the backdrop of Jackson Hole Mountain Resort. A fog layer forms when warm air cools as it mixes with colder air, according to the National Weather Service.

Photo: Nick Sulzer // Buckrail

Grand Teton National Park said on its Facebook that as the ground cools overnight, heat gathered from the sun during the day will release into the air at ground level. Dense, cool air from the mountain tops will then sink into the valley. This contact between the air and the ground causes the air blowing in to become cool. Then the dew point rises, creating high humidity and fog, according to weather.gov.

Photo: Nick Sulzer // Buckrail

With more snow predicted this weekend, Bridger-Teton National Forest reminds people to be on the look out for wintering wildlife as they deal with cold temperatures and limited forage.

Photo: Nick Sulzer // Buckrail

Leigh Reagan Smith is a wildlife and community news reporter. Originally a documentary filmmaker, she has lived in the valley since 1997. Leigh enjoys skiing, horseback riding, hiking, mountain biking and interviewing interesting people for her podcast, SoulRise.