11 Dec San Juan Mountains Weather Forecast~~Thursday, December 11, 2014
Enjoy the last few days of warm, sunny December because a strong Pacific trough that is presently drenching California and the Pac. NW will be moving into Colorado on SW flow beginning Saturday. We have high cirrus clouds streaming into the area today/Friday and by Saturday afternoon the weakening storm that contains plenty of moisture will arrive from the west.
The high pressure ridge currently over us will be pushed east by the upper-level trough then closed low circulation will form at the bottom of the trough and move over northern Arizona & New Mexico. Windy conditions and cooling temperatures accompany the Saturday storm. Snow should begin in the San Juans Saturday evening then spread north into the central and northern mountains. The storm will be short lived (mostly over by Sunday evening) and because of weak dynamics will not be a big snow producer. 3-6″ and maybe a bit more on higher terrain.
A weak ridge of high pressure will build Monday and Tuesday then by Wednesday potentially another low-pressure trough with snow moves into Colorado.
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