The 17th Annual Utah Snow and Avalanche Workshop (USAW) is scheduled for Saturday December 7th - Information and tickets available here.

Let's start with capital 'U' Uncertainty with how this whole decaying atmospheric river will play out. We used to call these storms The Pineapple Express because of their subtropical origins and they often led to wet warm and windy storms. But as always, the devil is in the details: Where will the firehose point?

As of 5am, the Cottonwoods and Park City ridgeline have picked up just 1-2" of new snow. Ogden has 3-5" and upwards of 0.5-0.7" of snow water equivalent. Provo has picked up 2-4" with 0.4" of SWE. This is heavy dense snow. Temperatures have warmed radically over the past 24 hours, from the low teens and to the mid to upper 20s. Winds are 15-20mph with gusts to 30 from the west-northwest with hourly wind speeds of 25-30mph at 11,000'. The highest peaks have gusted into the 70s overnight.

Here's my best guess at today's weather: We'll see continued heavy dense snowfall adding up to 4-8" (by early dinnertime) in the Cottonwoods and PC ridgeline with temps in the mid to upper 20s. Winds will blow 20mph from the west. A cold front pushes through around rush hour and snowfall rates will increase at this time with snowfall continuing overnight. Snow totals may reach 8-14" with just under an inch of snow water equivalent. I expect a bit more in the Ogden mountains and perhaps a lot more in the Provo mountains.

By tomorrow, snowfall should start to peter out by mid-morning. Temps will be in the teens. Winds will be light from the northwest.

The weather outlook does not look good. You may need binoculars to see the next storm. And even that may not help.