The Weekend continues with very light snowfall Tonight through Monday Morning with rising snow levels…….Best snowfall looks to be later Monday into Tuesday Night….
Saturday December 15, 2012
Posted at 5:29 pm by Howard
Sunday AM update:
Windy today and through Tuesday with a slight chance of snow showers today through tonight…..Highs in the 30s….
Snow increasing again by Monday sunrise with snow through the day and into the night tapering off Tuesday after mid- morning. Show showers Tuesday afternoon. Amounts still look light to moderate with about a foot at the Main Lodge by late Tuesday afternoon…..Strong gusty winds will gradually decrease Tuesday….
The freezing level rises to 8000 feet by midnight tonight then begins to fall during the mid morning hours Monday. The freezing level bottoms out Tuesday night at 3500 feet.
The snow level will rise to about 7000 feet by mid-night tonight then fall below the Mono County valley floor by early Tuesday morning…
Next Weekends storm is a powerhouse….it will begin about Thursday night…..first est. 2 to 4 feet by the end of the weekend….Another storm is expected after Christmas Day……
From Saturday PM:
Today’s’ weather continued to be rather chilly with some snow showers mainly over the crest. And…..Today was another day where the high temperature did not break above freezing here near the village. However, it was still 5 degrees warmer than the day before. Expect moderating temps through Sunday night as the freezing level climbs from 3800 feet this morning to 8000 feet by Midnight Sunday. Snow levels will continue below the Town of Mammoth Lakes. The weather maps today show a rather flat northwest flow aloft. Within the upper flow is an area of moisture that is currently advecting into our area and should continue into Sunday. We call this warm advection or a warm frontal precipitation as the air-mass moving into our area is warmer than the area it is replacing.
Generally, more stratiform clouds can be expected with light snowfall not amounting to much more than an inch or so between tonight and Monday morning. The freezing level will begin to come down again during the day on Monday as a cold front approaches and moves through Tuesday night. Expect winds to become stronger Sunday night with quite breezy conditions through Tuesday. SW 15 to 35MPH. Ridges will gust to 100mph after midnight. At this time, snowfall will be in the light/moderate class with about 6 in town and about a foot or so over the upper elevations by Tuesday afternoon. Snowfall amounts still look like about a foot+/- at the main lodge by Tuesday evening. Expect Fair weather Wednesday.
The Dweebs have put the idea of an Atmospheric River event on hold for the time being as the blocking pattern that is forecasted to form over the central pacific is looking much more progressive now. However it still looks like the Sierra will be in for quite a storm with some kind of subtropical tap next weekend. An estimate shows that precipitation may begin about Midnight Thursday night and that the storm may last up to 3 days….with 2 to 4 feet possible. In the longer range, the 18z gfs run had another storm beginning about Christmas Day eve.
That’s it for now…..will update Sunday night…..
Dr Howard and the Dweebs……………………………:-)