Thursday, January 9, 2014
We are currently in a lull between the departing weak wave last night and the far more impressive wave timed for tonight. Snowfall will be increasing again this afternoon, especially after sunset as the cool air begins moving over the area. Accompanied with moderately strong northwest flow, I would expect 6-12” by Friday morning, with optimistically some Steamboat magic occurring between 5am and 9am. Snow will lighten later in the morning before picking up again later in the afternoon as a trailing wave moves just northeast of the area.
Models have trended further northeast with this trailing wave, reducing expected snowfall late Friday into Saturday and increasing the chance that high winds will impact the ski area. Snow will become lighter by midnight as the air mass warms and stabilizes, and the snow will likely stop for a short time Saturday, though troublesome winds will continue. I might expect another 5-10” by Saturday morning with only a small amount of that occurring after midnight Friday.
The final wave affecting our area by Saturday afternoon is also cool, moist, energetic and from the northwest. Cooling temperatures will help reduce winds later in the day, and I would expect another 6-12” by Sunday morning, again optimistically with some Steamboat magic occurring between 5am and 9am. The morning snows should lighten during the day, but will likely persist through Monday afternoon. Most of the forecast 3-6” of snow by Monday morning will have fallen Sunday.
A dry and grazing wave in northwest flow looks to bring more cool air into the area Monday night, but no precipitation is currently expected. Likely a couple of brilliant sunny days Tuesday and Wednesday as mountain slopes warm, though valley inversion will reform and strengthen. Another grazing wave in northwest flow may bring some cool air into the region around Thursday, though models are currently struggling with the westward extent of this wave.
Big model differences emerge for the next weekend as the American model breaks the west coast ridge down and allows substantial energy and moisture into the central west coast where they desperately need it, while the European model hints that the ridge will dominate.