Monday PM Update:
Holy moly was today good!!!! Best day I’ve had in a couple years in fact! Snow continues to fall in weak bands of moisture that linger over the area. I’d expect these to clear up soon, but I would have expected that earlier this afternoon…. so who knows…. Snowing at my place in Draper and reports of snow still in Park City as of 6:15pm. Alta webcams show snow continuing there as well. Don’t question the will of the snow god, Ullr, we accept the gift bestowed upon us gratefully.
Big story late tonight and tomorrow is WIND. Downslope winds will be howling and with fluffy snow on the ground, we could see blowing snow tomorrow with wind chills well below 0F. If you live in or near an area that is susceptible to downslope wind event (you know who you are), I’d consider staying home tomorrow. Full update in the AM…
Snow showers will continue today, particularly in areas favored by a northwest flow and/or southeast of the GSL. We clear out on Tuesday with mostly dry conditions for northern Utah for the foreseeable future. Southern Utah could see some snowfall Wednesday and Thursday before clearing out as well.
Yesterday was amazing for many areas, particularly the Cottonwoods. It was the perfect cold northwest flow for them. If you remember back to Saturday’s discussion, I posted the 4-km NAM graph that showed up to 19″ of snow for the Cottonwoods by Monday morning… I said that model almost always over-forecasts, but if there is one storm where it could be correct, it’s this one. Sure enough, Snowbird/Alta are reporting 18″ of snow and it’s still snowing up there a bit.
The good news is all resorts across Utah saw the goods delivered yesterday. 7-10″ fell at resorts north of I-80. 7-13″ at the three Park City Resorts. 6″ at Sundance. 12-15″ for Big Cottonwood Canyon and 18-19″ for Little Cottonwood Canyon. Eagle Point is not reporting yet, but I’m sure they got some snow as well.
Today, snow showers should remain at times across the Wasatch, however they will be most numerous in the Cottonwoods which are favored most by the northwest flow. The lake was also a factor last night as a lake effect band developed. It sputtered at times and shifted position frequently. Generally it was pointed at Davis County, not really helping any ski resorts. The lake could continue to be a factor today and enhancement may occur down toward SLC and with any luck, into the Cottonwoods as well. Accumulations today should be < 3″ unless significant lake enhancement occurs.
Tomorrow we clear out. A closed low will form in Southern California and Arizona and could bring some snowfall to far southern Utah mountains Wednesday and Thursday. We will remain cold up north with inversions developing in the valley. Mountains will start to warm by Thursday with high temps reaching normal by the weekend.
The GFS has now jumped on board with the Euro and moves the ridge axis closer to the coast which shuts the door on inside slider storms for us. Both models now keep us dry for at least a week. However, both models also hint at trying to break down the ridge during the second week of January. It’s not an ideal scenario, but periods of dry weather occur every winter and at least this time temperatures will remain seasonable. I’ll post full numbers tomorrow, but at this point we are at, or above normal in most locations across the Wasatch.