An area of showers and thunderstorms developed yesterday afternoon and lasted into the evening hours over Mono County. Although Mammoth just picked up a few light showers, accumulating precipitation occurred to the NNW of Mammoth. Todays air mass shows a slight increase in Precipitable Water. However as the day goes by, the divergence/convergence couplets now in place will probably weaken.  There is still a slight chance of TSRW’s this afternoon into the evening for Mono County.

The Upper Low currently off the coast of Santa Catalina Island will get the boot into AZ late Thursday as a larger synoptic scale trof moves through the pacific NW. This trof will bring a little cooling Friday into Saturday with wind the main feature Friday afternoon into the night.  This appears to be the first quasi insider slider type system to bring wind and cooling associated with a 110knot upper NW jet that cuts through Northern CA and NW Nevada.  I am sure that it will be one of many as we go into the cooler half of the year.

Winds will crank up Friday afternoon into the night with gusts 20 to 40 mph in Mammoth and over 50+mph over the Mammoth Crest Friday night.  It will feel like Fall Friday PM into the night.


Pressures aloft begin to build from the SE early next week partially aided by the tropical storm moving NW up the coast of Baja next week. With higher heights over the state, warmer temps will follow early next week and into the last week of August. Although the models all deflect most of the TS moisture WNW of Central CA,  it will have to be watched as we head into the Labor Day holiday weekend…..  Remember, models are guidance…….Not a forecast…..


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