This storm has been a major headache to forecast. There has been considerable uncertainty over the last few days as to where the front would stall out. Initially, it looked like it might stall over the Wasatch and produce huge snow totals. Then Thursday night and Friday the model consensus began to indicate that the front would make it to the SLC and then retrograde back to northwest Utah. As I type this, the front is still stalled out in northwest Utah. This evening it will finally begin to progress to the east. Around midnight it’ll reach the Wasatch, which is when snow will begin to fall in earnest (we have high confidence in this).
Snow will continue, heavy at times, through tomorrow night as shown by the HRRR:
By 9AM tomorrow, I’m expecting a general 8-16 inches across the Wasatch. A moist, NW flow will continue throughout the day tomorrow. Storm totals should range from 15-25 inches in the mountains, with up to 30 inches in the Cottonwoods. Enjoy the storm!