Snow will be falling in BC beginning Sunday and continuing into late Monday. Temps are warm, especially along the coastal ranges (Rain for Cypress). Whistler will see dense snow from mid-mountain to the summits. A better chase will be in the interior where temps are slightly cooler so aim for mountain ranges near or north of Revelstoke for Monday and Tuesday. Higher amounts will be found in the northern ranges of the interior of BC (Mica Heli, CMH). Expect some rain at the bases of some of these resorts, especially central and southern regions with decent densities at the summits. Peak snowfall will be Monday AM to late Monday evening. Temps cool slightly for Tuesday so quality may improve a bit. Storm Ski Monday. Plan on 4-8 inches for Revy on Monday and 3-6 additional into Tuesday. Totals might exceed a foot between both days. 

Below: Decent snowfall totals by Tuesday morning with combined Monday Day, and PM rates (30CM for Revy and higher amounts in northern BC. Less snow will fall to the south and east towards Alberta. Temps are marginal for quality, but summits might ski pretty well. 

In New England, models are coming into better agreement with the low pressure setting up over southern New England by 3 AM Monday and taking a slightly further west solution. This will allow for warmer air to move further inland from the coastal ranges and warm many areas to near or slightly above freezing by mid-Monday morning. Peak Snowfall with intense bands of 2 inches per hour will occur over most of south/central Vermont and New Hampshire early Monday morning and into Maine by 10 AM (Intense snowfall). The highest snow totals will likely come from southern and central Vermont, most of the White Mountains of New Hampshire, and the ski areas in western Maine (Sunday River, Sugarloaf). Totals will likely be in the 7-12 inch range by late Monday favoring central and southern regions. Temperature dependant, amounts could be higher at the summits.

Unfortunately, warm air will be mixing in rapidly over most of these regions on Monday with quality decreasing from its initial onset of colder pow to dense pow. Due to the intensity of precipitation even in areas that appear to warm above freezing by mid-morning Monday, it's possible snow continues (Snow levels can be driven lower with intense Precipitation so rain may not be an issue especially further up the mountain). Colder air is noted over NY State and certainly the Canadian border regions where quality will be better (Lower snow totals in New York State with higher amounts into Canada). Rain will be falling along the New England Coast by Monday mid-morning (Head inland). 

While the southern and central regions grab the highest totals Monday, winds will shift to the NW Monday evening ushering in colder air and good upslope snow showers for the northern Green Mountain ranges. Jay Peak, Sugarbush, and Stowe might score some decent freshies for your first chair on Tuesday (Better quality). Chase south or central regions Monday and head north for Tuesday. 

Bottom Line New England:  Heavy Precipitation rates Monday, dense snow, mixed with sleet at the bases, and strong winds for a short period in the AM. Expect a wide variety of conditions, stay at higher elevations, and get to your destination by Sunday night. Travel conditions might be really bad on Monday morning. Lift impacts are likely Monday morning. The best quality might come early Monday as temps continue to warm. Late Monday into Tuesday might offer a colder refresh in the northern VT mountains with NW flow and snow showers (Moderate amounts better quality). 

Below Total snowfall for New England through Noon on Monday. Decent amounts for many ski areas, but due to warming, the amount could be variable elevation dependant. 

Below: Total snowfall by late Monday night shows snow filling in a bit more up north as winds shift to the NW and some cooling occurs. Higher amounts for Canada and better quality. 

Below: Temps by mid day Monday are near freezing at the surface in Vermont and warmer further east into New Hampshire. It will be raining along I-95 on the coast (Portsmouth, Portland). 

Another storm is on tap for the interior of BC Thursday/Friday with slightly cooler conditions (Moderate amounts). Some of this snow will trickle into the northern Cascades of Washington (Baker), northern Idaho, and Montana (January 18-19). The track of this storm may take higher amounts east of Whitefish into Glacier National Park (Moderate snow). Decaying moisture may reach the Tetons or other areas in the Rockies by Thursday or Friday with amounts looking unimpressive as it dries out. 

Looking further out on the models for the west there may be another weak low forming over central Arizona and New Mexico around January 22nd (Too far south for most Ski Areas) and hints of a low to set up over the  Sierra in the last few days of January (Glimmer of Hope). Models that far out are with low confidence but worth a quick mention. 

Below: January 18- weak low may sneak into southern CA, AZ, or NM. This may stay south of many Ski areas. 

Below: The Ensembles are trying to break down the ridge towards the end of the month which might bring a return to snowfall for the west. 

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Keep doing your snow dance!  

Powderchaser Steve