The next couple of days will be Summer like with highs in the mid to upper 70s today and Wednesday…

The Progs continue to show a progressive pattern with the next upper height anomaly progressing toward the coast today anti-cyclonically. As a result, expect today Tuesday to be the day with the least amount of wind in the high country with high temperatures approaching 75 degrees. Tomorrow Wednesday will be a day with more going on weather wise. 1st, the upper ridge progresses into Nevada during the day. This initiates southerly flow with a boost in temps while stability indices weaken.  Increased laps rates and high mid July like sun will initiate convection, while a convergence zone sets up due to increasing southerly flow. This will result in lots of cumulus clouds in the afternoon Wednesday and a 20% chance of Thunderstorms. (Isolated tsrw) mainly afternoon and early evening.

By Thursday, our upper ridge pushes into the Rockies, while a trof of low pressure approaches the Pacific NW.  It’s what’s behind this upper trof that is of interest for the upcoming holiday weekend.  The global models have been touting for over a week the possibility of a west NW jet affecting Mono County over the holiday weekend.  the current thinking is; 1. This jet is of respectable strength of 140 knots at 250MB. 2. Its axis remains north of our area through Saturday night. This is the windy area of the jet while antecedent conditions remain warm. The Jet core translates south into Mono County Sunday, so wind’s will continue at least moderate Sunday with cooling into Monday. Amplification in the upstream pattern also occurs Sunday, so that the next upstream jet-let digs the upper trof far enough south for the upper jet to reach Mammoth on Monday. That is the best day for both max cooling along with the slight chance of showers will be Monday. The weather system moves east Monday night into Tuesday with warming temps Tuesday into Wednesday next week.


Dr Howard and the Dweebs…………………………:-)