Category: Forecast

August 19, 2019 Summary: Even though the air mass aloft is quite warm, the amount of marine air now surging into the valley will counteract the generally warm air mass.  The latest sounding at Monterey indicates the depth of the marine layer is near 3,000 feet with the latest reading at Pacheco Pass showing wind…

August 17, 2019 Summary: the valley’s natural air conditioning vents are turning wide open this morning.  Already, temperatures are anywhere from 5 to 8 degrees cooler than 24 hours ago.  The marine layer at last report at Monterey had deepened to 2,200 feet and satellite imagery is indicating coastal low clouds are almost moving through…

August 16, 2019 Summary: Triple digits will again be widespread throughout the valley today with hottest locations possibly in the 108 to 109 degree range.  Most other locations will be between 104 and 107.  Strong upper level high pressure is centered just to the southwest of San Diego with another high center over the Four…

August 15, 2019 Summary: A very warm and dry air mass covers the southwestern U.S. and California.  The freezing level remains right at 16,000 feet above Vandenberg while the marine layer stands at only 500 feet deep.  In fact, at last report, winds at Traverse Air Force Base were dead calm.  The center of circulation…

August 14, 2019 Summary: Strong upper level high pressure is centered near the Arizona/New Mexico border and continues to expand towards the west coast.  The freezing level this morning is at 16,000 feet with a paltry marine layer crushed down to 500 feet.  The 6:00am observation at Pacheco Pass was quite interesting.  Winds were light…

August 13, 2019 Summary: The main center of upper level high pressure which for the past several days was located over Texas has shifted westward and will be centered over southern New Mexico and southern Arizona by Wednesday.  as this high shifts farther west, pressures will rise aloft, warming the upper atmosphere where freezing levels…

August 12, 2019 Summary: After a respite from the summer heat over the weekend, upper level high pressure which had been centered over Texas is building westward towards the west coast.  It will eventually connect with another high off the southern California coast.  Today will be the first day of a warming trend which will…

August 10, 2019 Summary: Today will be the coolest we will see for quite some time.  Most locations will not reach the 90 degree mark this afternoon.  At the surface, there’s roughly a 7 millibar difference in pressure between San Francisco and Las Vegas, which means a relatively strong onshore flow will continue.  At the…

August 9, 2019 Summary: It is a rather refreshing morning out there as most ag locations north of Kern County have cooled into the low to mid 50s out there with lower 60s in Kern County.  A fairly robust closed low is located roughly 250 miles to the west of the Oregon/California border.  As the…

August 8, 2019 Summary: It will be noticeably cooler beginning today.  The first of two low pressure systems will  move inland through Santa Barbara and Kern Counties this afternoon.  The low will be marked by some mid and high level clouds but little else.  Pressures aloft are falling so that in itself will result in…