The Weather pattern across the CONUS and off into the Atlantic will become more progressive toward the weekend. Initially, there is a decently amped ridge that is spreading over CA at the moment. It will result in some 7 to 10 degrees of warming through Friday. High Temps in Mammoth have been in the low to mid 60s of late. Upper 60s is expected today with low 70s Wednesday through Friday. Lows at night will be mostly in the 30s.

The upper 500mb Ridge that is building in, will succumb to flattening early in the weekend due to the aforementioned Progressiveness of the pattern down stream. This will allow some short wave energy, however weak, to drop south over Western CA to a position Just WSW of Mammoth Lakes by Saturday afternoon.  Even trough there is little cooling with this system, The very strong daytime heating of a sun angle much like very early August, will initiate daytime convection, and combined with weak upper divergence to pop some showers and thunderstorms, mainly Saturday afternoon with a slight chance on Sunday afternoon.  The weak upper low will exit through AZ Sunday night leaving a Sunny and warmer day for Monday.

 

The Models are mixed on the weather the 2nd half of next week.  The GFS has troughy possibly unsettled weather and the EC nicer weather. Will update next week.

 

Note for Southern CA weather on a climate scale:  The remains of La Nina will be felt over the Southern California Beaches for sometime. Later this Spring and Summer will offer more June Gloom days than normal, as the Sea Surface temperature’s remain anomalously cold.

Once the CA deserts turn hot, expect a much longer period of June Gloom,  well into Summer until the waters off the coastal sections warm up.