Category: Forecast

August 30, 2019 Summary: The amount of modified marine air flowing into the valley has slowed, even though the marine layer itself is still roughly 3,000 feet deep.  Strong upper level high pressure is sitting over southern California, but from Kern County northward, the high aloft is deeper due to disturbances moving into the Pacific…

August 29, 2019 Summary: The marine layer which was less than 1,000 feet 48 hours ago, has jumped up to 3,800 feet at Monterey.  With a deep marine layer, modified marine air is surging into the valley.  For example, the winds at Pacheco Pass were sustained at 23 MPH, gusting to 35.  As the modified…

8-28-19   We have a dog with a potentially serious issue.  We will be out of the office today.  We apologize for the late notice.  Reports will resume tomorrow.      Thank you, John and Trudy

August 27, 2019 Summary: Temperatures this afternoon will soar into the 101 to 106 degree range and will definitely be the hottest day of the week.  Upper level high pressure is centered right along the northern California coast and this continues to suppress the marine layer.  The marine layer currently has a depth of 1,000…

August 26, 2019 Summary: The high clouds over the valley this morning are from the remnants of former tropical storm Ivo which is now no more than a very weak low center several hundred miles off the Oregon coast.  This system poses no threat of precipitation whatsoever.  Upper level high pressure stretches from central California…

August 24, 2019 Summary: Upper level high pressure is centered just off the northern California coast this morning.  It will extend inland over California Sunday through Wednesday.  eventually, it will hook up with another high center located over the Desert Southwest, blocking any potential subtropical moisture from moving into California through that point.  The marine…

August 23, 2019 Summary: Upper level high pressure is centered just off the California coast this morning.  The air aloft has certainly warmed as the freezing level has  jumped up to 17,700 feet while the marine layer, which has been efficiently moderating temperatures recently, has shrunk back to 1,000 feet.  The modified sea breeze is…

August 22, 2019 Summary: A trough of low pressure is currently moving into the interior west via the Pacific Northwest and northern California.  This has somewhat increased the onshore flow, allowing a minimal amount of modified marine air into the valley.  This will result in one more day of near average temperatures.  There are two…

August 21, 2019 Summary: The amount of modified marine air moving into the valley has slowed.  The marine layer along the coast has peeled back to near 1,800 feet.  Even so, synoptically, a trough of low pressure is moving into the Pacific Northwest and northern California.  This will maintain moderate temperatures through Thursday.  Currently, upper…

August 20, 2019 Summary: Northern and central California remain under the influence of a weak trough of low pressure stretching from southern British Columbia to off the  northern California coast.  The marine layer this  morning stands at 2,600 feet and satellite imagery indicates the coastal low clouds and fog have made it to the last…