Tetons

New snow and wind may build wind slabs late in the day above 9,000’. Isolated pockets of wind slab up to a foot thick may be possible to trigger late this afternoon and early evening as we near the upper end of the 3-7” of snow which is forecasted. The avalanche danger will remain Low below 9,000’ where rain and a rain/snow mix will fall. Watch for wet loose snow sluffing in steep gullies today, particularly in areas of heavier rain or thunderstorm activity. The avalanche danger may increase to Moderate this afternoon at higher elevations. Evaluate snow, weather and terrain carefully today.

Temperatures will fall below freezing this evening as northwest flow develops. Another quarter to an half of an inch of water is forecast to fall overnight which could bring another 4-6” snow to higher elevations tonight and 1-3” through the day tomorrow. Northwest winds will increase overnight and into tomorrow, ultimately reaching 20-25 mph with gusts near 40. Temperatures will rise close to thirty tomorrow afternoon at 9,000’.Avalanche danger will rise to Moderate at the upper and, possibly, the middle elevations, depending on temperatures and snowfall overnight. Forecast precipitation appears to be widely variable again across forecast zones as well as by elevation so be sure to evaluate snow and weather carefully tomorrow. The slow rate of snowfall, relatively light winds, and warm temperatures are likely to limit instability to human triggering. Natural avalanche activity is not expected at this time though variable bed surfaces and snowfall amounts will warrant careful evaluation in the field.