The Northwest will be very active Wednesday night through Saturday with generally 3-6 inches each day with snow levels in the 2500 to 4,000 foot level (No one major storm but a continued plume of light moisture adding to the bases). The models show a general split pattern with one piece headed west into Idaho late Wednesday and another over the Sierra during the same time frame. Light snow will break out over the Sierra Wed night and Thursday (2-6 likely) as well as the Tetons, Wasatch and Northern Idaho (2-4 inches). Amounts might be slightly higher in Idaho and the Wasatch on Thursday. Eventuallly Colorado will see snow showers by Thursday AM with a quick hitting 2-4 inches in many areas during the day and evening.
A stronger system will impact the West by Saturday with a slow moving cold front that moves through Idaho on Friday night and Saturday and into the Northern Wasatch by Sunday mid- morning. The Sierra will see a quick hitting storm late Saturday into Sunday (moderate amounts). The Tetons will see light snow on Saturday and Sunday with the bulk of moisture likely headed south into the Wasatch and 4 corners.
Sunday/Monday might hit the low end powder criteria for the Wasatch and a even stronger chance of moderate to heavy snow setting up over the San Juan’s of Colorado/New Mexico by Monday and Tuesday. Some models show higher moisture over central Colorado as well. The chase might include the Northwest Saturday/Sunday, Wasatch on Sunday PM or Monday and the San Juan’s on Tuesday.
By the middle of next week conditions continue to be unsettled in the Northwest. Most of the moisture is aimed at Canada and north.
Enjoy the anticipation! Powderchaser Steve