Author: Trudy Hibler

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March 18, 2024 Summary Central California remains under a rex block pattern. That is where a low centers over the Desert Southwest and a high develops over the Pacific Northwest and northern California. This creates a north/northeast flow over central California. This off shore flow results in downslope winds off the Sierra Nevada which creates…

March 16, 2024 Summary The technical term for it is a rex block pattern. that is when upper level high pressure parks over the Pacific Northwest and British Columbia while a cut off low develops over the Desert Southwest. The counterclockwise circulation around the low is generating a northeast flow over central California. High and…

March 15, 2024 Summary The main feature on this morning’s model information is a cut off low centered near the California/Mexico border. Scattered showers are occurring over the mountains and deserts of southern California. Light showers are possible as far north as the Tehachapi Mountains. However, the valley will remain north of any active weather.…

March 13, 2024 Summary  high pressure just off the Pacific coast will build northeastward into the Pacific Northwest and British Columbia while a low center drops from the northern Rockies into the Desert Southwest. This will generate a strong southeast flow over central California, setting up a classic mono wind configuration. Typically, when this occurs,…

March 12, 2024 Summary  A weak weather system is moving down the valley. It’s clear that earlier models underestimated the upper air support needed for precipitation. an area of light rain is moving through central California and will move southeastward out  of the valley this afternoon. A big blocking ridge of high pressure will take…

March 11, 2024 Summary  Two weak waves of low pressure will move through northern and central California: one today and one tomorrow. Tuesday’s trough passage will spread light showers over northern California, possibly down to a Monterey/Merced line. It’s possible a few sprinkles could reach as far south as Fresno County, however, anything measurable is…

March 9, 2024 Summary  through Sunday, we will be under the influence of an upper ridge of high pressure over California. From Sunday night through Monday night two weak weather systems will move through the Pacific Northwest and northern California. Central California will barely get clipped by these systems. A few light showers could spread…

March 8, 2024 Summary  A ridge of upper level high pressure covers most of the eastern Pacific Ocean with a ridge extending northward into the Pacific Northwest and the Canadian Rockies. The high will shift eastward Saturday, allowing a trough of low pressure to move into the Pacific Northwest and central California Sunday night and…

March 6, 2024 Summary  The low pressure system which resulted in a brief spattering of showers in the valley overnight, has moved southeastward and is now centered near Needles. Plenty of cloud cover remains over the southern portion of the valley. Soundings indicate the base of the overcast over Bakersfield and Porterville is 3,000 feet.…