Milder weather ahead as a flat ridge builds in over head….Strong Valley inversions expected…..Next weather system is a California Slider Friday night into New Years Eve…..Bitter Arctic Break out possible just after New Years Day….

Todays brief update calls for milder weather into Thursday with highs in the 20s Monday, 30s Tuesday and 40s Wednesday and Thursday. Winds will be light and lows at night in the single digits then teens Tuesday am. The fair weather trend will continue into Thursday with increasing breezes by Friday.  The next storm will bring light amounts of cold dry powder Friday night into Saturday. It will be a cold system with gusty winds Friday and Friday night. Highs will cool to the upper 20s by New Years Eve and nighttime lows will cool back into the single digits and teens…


Longer Range Suggests Bitter cold week after New Years Day….


More in My Weather letter tonight or Tuesday AM.


The Dweeber………………….:-)

Rapid exit of Friday’s Storm has provided a beautiful Saturday Morning….unstable air aloft may still provide a little more snow today….Then fair and milder through the middle of the up coming week……Gulf of Alaskan Block may make return the first week of January….

Weather Letter Update Tuesday AM


Snowfall Tallies:

Village at mammoth  14 inches

Main Lodge                20 inches

Top of Mountain        32 inches


Cold Upper Trof is exiting California today but not before a few pockets of instability track through the sierra. These pockets, (Vort maxes)  will kick off some snow showers with another inch or two possible. Otherwise Cold Air advection will continue today, tonight and into Sunday AM.  The high temperature forecast for Mammoth Saturday is 25 degrees/low -2…..While highs on Mammoth Mt will be in the mid teens Saturday.

It was 4 degrees on top at 9:00AM. The winds have been on the decrease this morning with gusts to 25 MPH on top. Expect the winds later today to pick up as the upper jet from the north on the back side of this sharp Trof comes through.

Expect rapid height rises Monday into Wednesday with the freezing level to go from 2500 Sunday AM to 11,500 feet by Wednesday PM.  Expect high temps to rise into the 40s by mid-week. Lows at night under a temperatures inversion to be in the teens mid-week


Longer Range:

Just a brief statement or two as I will be chatting in more detail in my Tuesday AM weather letter about the possibilities to come,  weather-wise  for Early/Mid January…

Both The GFS, ECMWF and Canadian global models are showing the return of the blocking pattern we had earlier this month.  Blocking patterns suppress the westerlies to the south, which often times flood the far west with subtropical moisture; no pun intended.  AR and pineapple connections are most-always associated with Blocking Patterns which often are associated with Kona Lows that can feed moisture to the west coast. The big question will be, is this blocking in the -EPO or -WPO sector.  The difference is profound for California weather…


Dr Howard and the Dweebs…………………:-)

The Friday/Saturday snow storm to favor Southern Mono County as Upper Jet Dives Toward Southern California…Winter Storm Warnings hoisted for Mono County at 10:00AM Friday through 12:00PM Saturday…..

Finally a Storm that will Favor Southern Mono County and the Southern Sierra. In that the Upper jet is diving a bit more south now with the front left exit region favoring the southern sierra and southern Central Sierra, The QPF’s bull’s-eye has been shifted south to near Mammoth Lakes now with between 2 to 3 feet of cold dry powder expected over the very upper elevations.  Snow to water ratios will range from 10:1 then 12:1 with the very back-end of the storm 15:1 is possible. However, the Dweebs point out that a good part of the storm will be at 12:1. So no Platinum Powder Alert. However, the snow will be light and powdery! It will be a very cold holiday weekend!  Highs Saturday near 20!…..Lows a little below zero Sunday AM.

The very latest guidance is indicating that the storm is speeding up a bit and so the higher amounts on Mammoth Mt may be in Jeopardy if it moves through faster.

This will be the icing on the cake for Mammoth Mountain, for the Christmas and Chanukah holiday’s and the best skiing conditions in years!

The week between Christmas and New Years looks dry now with the next storm being delayed until possibly the 3rd of January…


Dr Howard and the Dweebs……………….:-)