Category: Uncategorized

November 30, 2023                                                                   Summary:   A very weak low pressure system is skirting the central coast at this hour. Scattered sprinkles and very light showers are occurring along the coast range. It’s doubtful these showers will reach very far into the  San Joaquin Valley. What’s left of the low will move into southern California this evening.…

November 28, 2023 Summary:   As of 1:00pm, temperatures had moved into the mid 60s at most locations, generally 2 to 3 degrees warmer than 24 hours ago. The air mass has modified enough to keep most locations in the low to mid 30s  tonight with only the coldest river bottom type in the upper 20s…

November 28, 2023                                                                   Summary:   Upper level high pressure stretches from Arizona to Washington state while a weak upper low is located roughly 500 miles to the west/northwest of the Golden Gate. The low will slide southeastward, just brushing the central coast then into southern California and the desert southwest by Thursday. High resolution models this…

November 27, 2023 Summary:   Temperatures as of 1:00 pm anywhere from 3 to 5 degrees warmer than 24 hours ago. Dew points, however, are down 2 to 5 degrees, meaning the air mass is a bit warmer but also a  bit drier. With fairly radiational cooling under mostly clear skies, upper 20s and lower 30s…

November 27, 2023                                                                   Summary:   Yet another chilly, frosty morning in the valley. Currently, there’s a zone of high pressure stretching from California to its center over eastern Oregon. A Pacific storm s located roughly 500 miles due west of the California/Oregon border. That system will weaken and move southeastward, sliding underneath the high and moving…

November 26, 2023 Summary:    Variable high clouds have spread over the valley today due to a weak upper air disturbance just west of Monterey. Models show at least some cloud cover for most of the night so I believe this will be a low to mid 30 event rather than an upper 20/low 30 event…

November 26, 2023                                                                   Summary:   Some high clouds have been moving over the valley during the predawn hours. They slowed the radiational cooling process a tad. Even so, widespread upper 20s and lower 30s are dominant throughout the citrus belt. The overall pattern is upper level high pressure centered over the Pacific Northwest with a weak…

November 25, 2023 Summary:    Temperatures as of 12:45 are about where they were 24 hours ago and are generally in the upper 50s. dew points are in the low to mid 30s. so we will start out tonight very close to where we were last night. upper level high pressure covers most of the eastern…

November 25, 2023                                                                   Summary:   This morning marked the first general frost of the winter season. Widespread upper 20s and lower 30s are predominant throughout the citrus belt. A dry northerly flow continues to wrap around an upper low centered over the Colorado/Utah border. Off shore, a large  ridge along the Pacific coast bulges north/northeast into…

November 24, 2023 Summary:  A  north/northeast flow continues to rotate around a low pressure system centered over northern Utah. The only active weather with this feature is light showers over the eastern Great Basin and the Rocky Mountains. Temperatures as of midday were anywhere from 7 to 10 degrees cooler than 24 hours ago. Dew…