The Atmospheric River continues through the end of this week. Initial focal points are from the Sierra extending north into Idaho and Wyoming. Periodic cold fronts Wednesday over the Sierra and Northern Rockies, and again Friday will bring better quality. Cold air for the Rockies hits later this week, with snow pushing south into northern Utah and Colorado.

The last three days have brought significant accumulations to most resorts across the Alberta Rockies. I've included a list of storm totals below. Now we must deal with an Arctic airmass that will bring dangerously frigid temps on Monday and Tuesday. Temps moderate slightly Wednesday through Friday but will still be cold. Skies also dry out this week under a surface ridge of Arctic high-pressure.

An active pattern will continue across the West this week with storms favoring the Northwest, Sierra, and Northern Rockies. Temperatures will be warm from the Sierra to Central Rockies early in the week but will trend colder later in the week. The Great Lakes and New England will also see several storms, though mixed precipitation could sneak in at times.