Tetons

New snow and winds will be increasing the avalanche hazard during the day. At the higher elevations small pockets of wind slab will begin to build and could be 6 to 18 inches deep by the end of the day. These slabs will be forming on weak, non-cohesive snow surfaces and crusts and are likely to be sensitive to human triggers. Monitor conditions for unstable snow and escalating hazard.

A low pressure trough with embedded disturbances will dig southeast through the region resulting in mountain snow and a mix of rain and snow at the lowest elevations. One of these disturbances will cross the region early Friday morning and provide a brief period of moderate to heavy snowfall before sunrise. Light snow with little accumulation is forecast during the day. Another disturbance will bring heavier snowfall Friday evening and into Saturday morning. Temperatures will be in the teens and 20s in the mountains and in the 20s and 30s in the mountains. Southwest winds will increase to 25 with gusts to 50 miles per hour.As new snow depths and winds increase so will the avalanche hazard. Pockets of wind slab will form on hard crusts and persistent weak layers of faceted snow. Due to the surface distribution variabilities in these old snow surfaces some of these wind slabs may be very sensitive to human triggers while other may not. Total snow depths are shallow. Getting caught in a small slide on a very steep slope could have serious consequences. If the weather forecast verifies the general avalanche hazard is expected to be LOW and on the increase. Increased snowfall and winds could quickly increase the hazard to MODERATE.