Author: John Hibler

May 4, 2018 Summary:  Warmest locations this afternoon will be at or near the 90 degree mark.  Upper level high pressure continues to build overhead.  The freezing has jumped from 9,400 feet yesterday to 12,900 feet as of the overnight hours.  The marine layer along the coast has also been squashed.  The latest reading at…

May 3, 2018 Summary:  The low pressure system that resulted in cool and unsettled weather over central California the past few days has moved into the Four Corners region.  This is allowing upper level high pressure to rapidly expand into the western United States via the eastern Pacific Ocean.  The freezing level as of yesterday…

May 1, 2018 Summary:  Doppler radar is indicating light showers are moving from northeast to southwest into the lower Sacramento Valley and northern San Joaquin Valley.  There are also a few scattered showers over the Sierra Nevada and a few cells are showing up over extreme western Kern County.  A broad area of low pressure…

` April 30, 2018 Summary:  A considerable amount of cloud cover is evident over much of the valley this morning with most locations reporting an overcast based at 6,500 feet.  A strong northwest flow is wrapping around a big low pressure system which is moving from southeast Oregon into the Great Basin by this afternoon. …

April 29, 2018 Summary:  Low pressure is now centered over central Oregon with a trough extending southward into northern and central California.  Even though this system is large in scope, it is moisture starved so any shower activity will be confined to the mountains of northern California.  From Monday through Tuesday, this storm will move…

April 28, 2018 Summary:  Skies are generally clear over central California with the exception of the Tehachapi Mountains where upslope clouds are forming due to a strong northwesterly push of air being lifted by the slopes.  Even on the valley floor, it’s somewhat breezy along the west side and even towards the center of the…

April 27, 2018 Summary:  A full blown invasion of marine air into the valley is underway.  The inland push of the sea breeze has formed a bank of low level clouds over the west facing slopes of the Sierra Nevada from Tulare county northward.  Temperatures have also lowered a great deal compared to what they…

April 26, 2018 Summary: Some marine air is beginning to penetrate through the Delta as winds at Traverse Air Force Base are now out of the southwest at 23 MPH, gusting to 28.  So far, there is little evidence of these breezes making it over the Coast Range and into the west side of the…

April 25, 2018 Summary: Temperatures again this afternoon will eclipse the 90 degree mark.  There are inklings of change out there, however, as the marine layer has deepened to 2,200 feet and some of that sea breeze is beginning to move through the Delta.  Winds at Traverse Air Force Base, at last report, were gusting…

April 24, 2018 Summary: Low to mid 90s were widespread throughout the valley yesterday afternoon and I do look for a repeat performance today.  Strong upper level high pressure covers most of the western United States and just off shore.  This has resulted in a freezing level up to 12,500 feet with a fairly shallow…