Category: Forecast

September 8, 2018 Summary:  Strong upper level  high pressure is centered just off the south central California coast this morning.  The freezing level has risen all the way up to 17,000 feet which is one of the few times during the summer season it has risen that high.  The marine layer is only at 1,000…

September 7, 2018 Summary:  A strong upper level high is still sitting off the southern California coast.  Over the past 24 hours, there has been a slight eastward shift, meaning pressures will marginally rise above central California today.  The marine layer has shrunk further as a result with a depth of 1,100 feet. Almost no…

September 6, 2018 Summary:  Upper level high pressure remains anchored off the southern California coast and will continue at that location through the weekend.  This is allowing a west/northwest flow aloft to continue, ensuring dry conditions with no more than a few high clouds, at most.  The depth of the marine layer has shrunk a…

September 5, 2018 Summary:  The pattern has changed very little over the past 24  hours.  Along the coast, the marine layer continues to level off at 1,900 feet while the freezing level has come down a little bit and stands at 14,400 feet.  There is some leakage of marine air into the valley via the…

  September 4, 2018 Summary:  Today will be somewhat tricky when it comes to temperature forecasting.  The marine layer is 1,900 feet deep, which is not horribly high.  However, there is sea breeze moving through the Delta as winds are gusting to 29 MPH and gusting to 24 MPH at Pacheco Pass.  The question of…

September 1, 2018 Summary:  yesterday was the mildest day we will see for a while as subtle changes continue to unfold.  The freezing level has moved up to 16,100 feet, up from 4,900 feet yesterday at this time.  The marine layer continues to slowly shrink.  As of last report, the marine layer was 1,900 feet…

August 31, 2018 Summary:  Upper level high pressure has drifted from Baja to off the northern Baja peninsula.  In the meantime, a weak trough continues to reside over the Pacific Northwest.  There was almost a touch of fall in the air yesterday as mid to upper 80s were widespread due to a northwest flow aloft…

August 30, 2018 Summary:  Most locations yesterday were at or slightly below the 90 degree mark.  even Bakersfield topped out at only 89.  North of Fresno County, most locations were only in the low to mid 80s.  the marine layer along the coast this  morning is still  more than 3,000 feet deep and will continue…

August 29, 2018 Summary:  The overall pattern has changed little over the past 24 hours.  At the upper levels of the atmosphere, high pressure stretches all the way from the southeast U.S. to northern Baja.  A trough of low pressure stretches from western Canada southward into the eastern Great Basin.  This has created a west/southwest…

August 28, 2018 Summary:  The marine layer along the coast has deepened further and is all the way up to 3,200 feet this morning.  Satellite imagery shows coastal low fog has moved inland as far as the last mountain range separating the San Joaquin Valley from the coast.  Low clouds have  moved through the Delta…