Category: Forecast

May 17, 2022 At the upper levels of the atmosphere, a zone of flat high pressure covers the eastern Pacific Ocean and California. There is a weak ripple of low pressure moving through the high which should maintain temperatures in the mid to upper 80s today. Modified marine air is pushing through Pacheco Pass as…

May 16, 2022 A weak trough of low pressure extends from the Pacific Northwest to central California. The portion of the trough this far south is inactive, but it has deepened the marine layer enough to allow for modified marine air to move down the valley. Winds in the Delta at Travis AFB are currently…

May 14, 2022 Temperature at this hour are uniformly around 10 degrees warmer than 24 hours ago. Readings over the mountains are also substantially higher than yesterday at this time. The freezing level has jumped all the way up to 12,900 feet. Upper level high pressure this morning is centered southern Baja and a ridge…

May 13, 2022 John’s feeling a bit under the weather this morning and needs to take a sick day. We’re off to Urgent Care as soon as it opens.  We’ll keep you updated. Trudy

May 12, 2022 Temperatures at this hour are running 4 to 6 degrees above yesterday at this time. Warming is even more significant over the higher elevations. Sandberg at an elevation of 4,100 feet is 8 degrees warmer and Blue Canyon at 5,600 feet is up by 7. The balloon sounding at Oakland reported a…

May 11, 2022 It was a chilly morning out there. The coldest readings I could find as of 6:00am were 36 at east Porterville and 37 at Terra Bella and Lindsay. Most other locations were between 39 and 44. The center of circulation of a cold upper low is right overhead this morning. It will…

May 10, 2022 At the upper levels of the atmosphere, a cold low extends from southcentral Canada to a second center just off the northwest California coast. For the second day in a row, the balloon sounding taking just a bit ago off Oakland was 3,700 feet. At the surface, pressure is still considerably lower…

May 9, 2022 Temperatures for the next 72 hours will run anywhere from 10 to 15 below average. A very cold upper low is located off the northwest California coast this morning with a mostly dry trough of low pressure extending southward into central and southern California. The balloon sounding above Oakland this morning pegged…

May 7, 2022 At the upper levels of the atmosphere, a mammoth trough of low pressure is digging slowly southward into California. At the surface, a deep area of low pressure is setting up shop over southern Nevada. The current altimeter reading at San Francisco is 30.09 inches of mercury while at Las Vegas the…

May 6, 2022 Upper level high pressure is slowly breaking down and is sagging southward from its center off the coast of the Pacific Northwest. The marine layer is slowly deepening and is surging through the Delta. That modified sea breeze will eventually spill over other gaps and passes along the Coast Range further south.…