The latest storm to affect the San Juan Mountains is taking form in the Pacific NW this morning and has begun pushing clouds into northern Colorado. A fast moving shortwave impulse on NW flow will move across the Great Basin tonight and Friday with deepening moisture bringing some snowfall (3-6″ maybe more…, above 11,000′) to the SJ Mountains.
The disturbance will quickly move east of the San Juans later Friday and residual moisture will probably continue throughout the evening, but with little accumulation. Since this is NW flow the north side of the San Juans, (Uncompahgre Gorge to the top of RMP could see periods of high precipitation rates later tonight, but computer models are not in agreement with this scenario.
Quiet returns to the mountains through the weekend then the new week begins with a more progressive pattern that may bring another shortwave or two into the area.