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It was a excellent storm over the weekend with more then 2.5 feet of fresh powder on Mammoth Mtn. Since then ridging has built into the California with above normal high temps expected all week here in the high country!

Normal highs here at 8000 feet this time of the year is in the mid 40s…today high is predicted to be 55…tomorrow 59. Lows in the 30s. So let the runoff resume!

The outlook this week shows ridging aloft that will flatted a bit mid week as the northwest receives more rainfall.

An approaching weather system from the west resumes the building of heights over California Thursday for high temps moving into the low 60s then mid 60s by Friday into Saturday. Yes,  high temps will be 20 degrees above normal next weekend! Nigh-time lows will move well into the 30s….so this week into the weekend will incur quite the runoff!

As indicated below in the longer range…this Friday and Saturday afternoons, may have some diurnal isolated showers and Thunderstorms…..(Summer like) (See below)

Based upon the record highs in the Owens Valley next weekend which are in the low 90s set back in 1950 and 1989, this will not be a weekend with record highs, but nevertheless, a taste of very late spring to early summer weather!

Longer Range:

The next weather system will be approaching late Sunday….

Winds will increase Sunday……

However…the new 12z Monday GFS actually has some convective showers (Summer Like) over the Central Sierra as the first good thermal trof develops over the Sierra Friday afternoon with a convergence setting up. This again may set up again Saturday…..Isolated TSRW?  Due to respect for Tom C. The Dweebs will not use the word Snow-melt Cu/Showers…. 😉

Active weather returns the early part of the next week beginning the 23rd with long range GFS bringing good cold upper low down the west coast. The system seems to be splitting over the weekend.  I like the ECMWF’s idea of the slower scenario as there is a pretty strong Warm Ridge north out of Mexico that is supported by the feed back from increased thickness/Diabatic Thickness process. Also Mid Latitude Omega Block will slow things down as well….

So the less progressive solution is preferred at this time. That is until about mid week…..or Cut-Off Low may hang off shore through the end of the week!

Have an excellent Week………………..!!!!!

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

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Reference Glossary of Weather Terms
Disclaimer: I have been a hobbyist meteorologist for over 30 years here in the Mammoth area and I do this for my personal enjoyment. The National Weather Service saves lives every day . . . I do not. When making important planning decisions please use information provided by the National Weather Service as they are the most knowledgeable and accurate information source available today.