The current blocking high latitude upper high over Eastern Siberia will continue to shift west then weaken over the next 10 to 12 day….This according to the ECMWF 5 day means. Through this transition, a long wave trof slowly deepens between the Hawaiian islands and the dateline, with significant height rises occurring over the west coast.

The warm air advection pattern now occurring over North Central and Northern California and through the Pacific North west comes to an end early next week.  There apparently will be two or three more waves to effect the Central Sierra including Mammoth Lakes thru early next week. The one short wave coming in Thursday Am,  and the other the very end of this week like late Saturday night or Sunday. Both have the capability of producing a trace to an inch or two at the main lodge,  especially the one for Thursday and again Monday.  These systems for the most part this far south may give the higher elevations of Mammoth Mtn  2 to 3 inches.  These are warm pushes of moisture over the Sierra that are mainly directed to Tahoe north with the Mammoth location highlighted by high snow levels, generally above 8500 to 9000 feet. Each system will be accompanied by gusty winds, but not high winds as the upper jet is well north of the area.

Longer Range:

Retrogression of the long wave ridge position will take place after mid month during that 3rd week of March. That will be the time when we will return to a pattern of NNW sliders with colder storms with the potential for light to moderate snowfall.

The Dweebs are off the rest of this week….returning next week… update Tuesday the 11th of March.


Dr Howard and the Dweebs……………………………..:-)