Author: Trudy Hibler

April 10, 2022 Upper level high pressure over the eastern Pacific continues to move further off shore. This allowed a low pressure system to quickly move through the western US yesterday, dropping temperatures between 10 and 15 degrees over the previous day due to a strong push of marine air down the valley. A strong…

April 9, 2022 A dry trough of low pressure is currently moving through the Great Basin. Surface pressure is falling over Nevada and Arizona and is rising along the northern California coast. The current altimeter reading at San Francisco is an even 30.00 inches of mercury while at Las Vegas, the reading has fallen to…

April 8, 2022 This is absolutely ridiculous. Fresno recorded a high of 94 yesterday, Lemoore 96, and Bakersfield 97. As I look around for information that would result in a cool down today, I find none. The marine layer is only 500 feet deep and winds at Travis AFB are variable at 5 mph, indicating…

Over the next 48 hours, we will be under a very amplified pattern. by that, I mean a sharp ridge of upper level high pressure will be over the western states with a deep low over the Great Lakes region.  The center of circulation of the high is just of the southern California coast. With…

April 6, 2022 Springtime is typically a time of radical change in the northern hemisphere. We are moving into one such change now. Temperatures will jump well into the 80s today then well into the 90s Thursday through Friday with only slight cooling Saturday. This first phase which will jet us into summer like conditions…

April 5, 2022 A zone of upper level high pressure stretches from the eastern Pacific eastward across California. We are flanked on the eastern rim of the high, putting us under a northwest  flow aloft. Strong, gusty winds are occurring over favored locations in the Tehachapi Mountains and especially over the Mojave Desert. This is…

April 4, 2022 California is flanked on the far eastern side of upper level high pressure off shore. The freezing level this morning stands at 10,400 feet and will slowly rise this week as the off shore  high builds into the western US. By Wednesday and Thursday, a big ridge will build northward into the…

April 2, 2022 Temperatures are 1 to 3 degrees warmer than 24 hours ago. Above the valley floor, Sandberg at 4,100 feet is 6 degrees warmer while the freezing level this morning over Oakland, according to the latest balloon sounding, is at 11,400 feet. A temporary warming trend is underway. Most locations both today and…

April 1, 2022 The upper atmosphere is warming as a ridge of upper level high pressure builds in from the eastern Pacific. By Tuesday afternoon, many locations will be pushing into the low 80s. a weak trough of low pressure will move through the Pacific Northwest Tuesday, lowering pressures enough for a minor cooling trend.…

March 31, 2022 Mid and high level clouds associated with a weak trough of low pressure will move through today. Currently, clouds are based between 11,000 and 20,000 feet which will dim the sunshine from time to time, but otherwise will have little effect. High pressure off shore will push inland tonight and Friday, pushing…