The quasi permanent upper Trof off the west coast is showing signs of weakening and disappearing the week following July 4th.   High pressure building over Alaska -(Negative EPO) will begin to stretch the upper trof more west-east this Sunday into next week allowing height rises over the far west (Warmer Temperatures) . This will bring a warm up for our region with highs in the 70s.  Both GFS and ECMWF have strong height rises resuming from south to north over CA the week following July 4th. Although the European model is slower to get rid of the trof through the 4th of July, both are in agreement in beginning the first period of 80s in Mammoth afterwords …..as early as the 7th of July.  Isolated thunderstorm action may begin of the summertime verity about the weekend of the 6th, with atmospheric modification and an increase in afternoon convection, the following week.

 

I will fine tune these dates early next week.   In the meantime, dry SW flow continues and that means dry dry dry….but sensibly warmer this Sunday and Monday.  Low  to mid 70s….

 

 

Dr Howard and the Dweebs………………….:-)