Congrats to the Class of 2017!

 

A deep for June, upper low center of 538DM at 500MB was west of Vancouver Island early this morning., with the main upper jet, West-East across Northern California. Winds over the crest are strong,  gusting to 90 MPH out of the WSW.  As the upper jet remains stationary, these winds are likely to continue through the weekend. Earlier this morning a cold front moved through Mammoth Lakes bringing .02 hundreds of an inch of rain. This mainly occurred at about 4:00 AM this morning.  It is cooler today with highs in the upper 50s. Tomorrow the GFS has 2.5C of cooling at 700MB, and 50DM fall in 500MB heights.  I expect another 4 to 5 degrees of cooling with highs on Saturday in the low 50s.   The upper low makes its move to the central OR coast by Saturday morning, then slides SE to Northern CA by late Sunday morning.   Significant height falls do not re-occur over Mammoth until Saturday night. Expect the winds to come up again Saturday night into Sunday, along with increasing clouds and further cooling. During that afternoon Sunday,  A strong Vort center +30 Via the Canadian model, swings over Mammoth Lakes at 5:00PM Sunday. No doubt there is going to be light snowfall in the high country Sunday afternoon of possibly a few inches with the snow level about 7000 to 7500 feet. This may continue through the late evening….Hence Winters Last gasp!

 

Next Week:  Summer on the way!

By Monday, the main wind gradient pushes south of the Owens Valley to the SE deserts of CA; it will still be a bit breezy in Bishop.  Tuesday into Wednesday, Progs show a flat ridge building over California with the ridge increasing in amplitude Thursday into the last weekend of Spring. High temps will return to seasonal norms by Wednesday and go well above normal over the following weekend. The last weekend of Spring looks hot for many areas of California with a Convective pattern setting up for the high country and the chance of Thunderstorms. Otherwise, it is June gloom season for the Coastal sections of CA.

Expect the last of the 40s for highs in Mammoth to occur this Sunday. With upper 50s Monday and 60s Tuesday. Highs low 70s on Wednesday and up to near 80 degrees by Saturday or Sunday with the chance of thunderstorms.

The last shoe to drop that shifts our pattern from Spring to Summer is when the Continental high sets up over the Southwest or even the far west great basin.  That is in the cards now by the next Sunday with guess what? Even the possibility of late afternoon Showers and thunder storms of the Summer time variety.  Take Care…..Summer is almost here! The Summer Solstice is the following Tuesday, the 20th at 9:24PM PDT.

 

Dr Howard and the Dweebs…………………:-)