Wrapping up the last 10 days of Spring will be EZ for the Weatherman with just warming and cooling a few thunderstorms and some wind to consider…..

It’s the last full week of Spring and the Dweebs are taking a look through the end of this week for any significant weather. The week for the most part will be affected 1st by an upper ridge over the pacific NW bringing dry warmer than normal weather through Wednesday. A cool down follows going into the weekend as a new ridge builds further west and pulls down cool western Canadian Air over the far west.  An upper level low pressure system developing over the Northern Great Basin early the following week will drop south during the last few days of Spring and may put Mammoth in a favorable area for some thunder-storm action. I have to say, that is a long shot outlook this far out….but inquiring minds may want to know!  🙂

The Summer Solstice arrives on June 21st this year for California. The Sun reaches north to the Tropic of Cancer at 23.5 north, at 3:07AM that Thursday Morning…. 23.5 north is just north of Cabo San Lucas for example.


Our Shoulder Season is wrapping up and it is almost time for Summer Fun!!!!


Have a Great Week…..Next update next Monday a week away as the Dweebs take a look the beginning of Summer…….


Dr Howard and the Dweebs,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,:-)

Warm-up this weekend will mark the first stretch of 70s in Mammoth this year as Spring comes to a close over the next few weeks and the longest days of the year approach…..

As we approach the Summer solstice over the next 3 weeks the upper jet will continue to weaken and spend a great deal of time to the north of us. This weekend will be highlighted by high temperatures some 10 degrees above normal with mid to upper 70s expected by Sunday. This upper ridge will give way to lower heights later next week for some cooling. However, temperatures are expected to remain in the low to mid 70s through mid-week.  There will be more Zephyr wind next week as the west to east gradient’s increase. Further out, high pressure builds over Texas and this pattern generally gives Mammoth more south-west flow. This should continue the dry pattern of late.


Longer range does show climatically favored upper Trof, bringing wind, cooling with possible showers toward Fathers Day, (sometime during 3rd week of June). Whether this actually plays out, only time will tell.  In the meantime, “Script from George Harrison”; Little darling, it been a long-long cold winter, “Here comes the Sun”…….:-)


High temperature’s in Mammoth today Saturday and tomorrow Sunday will be mostly in the mid 70s. Lows will rise into the 40s from the 30s. Light Zephyr breezes are expected Sunday with stronger Zephyr wind next week. Highs will cool more toward the low 70s by mid-week.

The following weekend looks dry and breezy with highs in the low 70s


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

Cyclonic Flow continues today over the Great Basin with a slight up-slope component….Thus a few isolated showers are still possible early this week…..Another Trof affects the area Wednesday and Thursday….

Cyclonic flow continues over the region this morning as the associated upper low remains situated over the Great Basin. While the models show only a slight eastward progression of the upper low, areas of unstable air, will continue will rotate around the upper low and cross the Sierra Nevada today. Afternoon clouds and isolated showers will remain in forecast both today Monday and Tuesday. The showers will be mainly diurnally driven, and so cloudiness will dissipate each evening and night…. For the remainder of the week, there is another Trof that will affect the area, bringing cooling, wind and the chance of showers Wednesday and Thursday. However, with that said, the trough appears to be pretty moisture starved and so not looking forward to much more than a few hundred’s of an inch.

Longer Range;  The new 12Z GFS brings dry breezy weather over the area for this coming weekend. The Trof this time does not dig south. Rather it remains in the pacific NW. So dry warm weather is expected for the 1st weekend of June.  Of mention, we still have no real ridging in the week two outlook; The pattern is progressive.  This means that although no significant weather is in the Dweebs outlook for week 2, (First week of June) it would not need to change much to bring a system capable of precipitation back into the Eastern Sierra then.


Temp forecast for Mammoth:


 Mammoth Lakes
      /70    39/72    41/69    38/61    31/68    39/67    44/69