Category: Forecast

March 13, 2023 am Satellite imagery depicts a wide swath of cloud cover roughly 400 miles off the California coast which will be moving onshore tonight with the next round of moderate to heavy rain over all of central California. Also, a surface low will be approaching the coast at the same time, increasing the…

March 12, 2023 am Yesterday’s theme was isolated thunderstorms that broke out in the afternoon, causing another round of local flooding. Satellite imagery this morning shows two impulses moving into northern California. The first has already spread showers over most of northern California. The second will arrive this afternoon. It appears most of the activity…

March 11, 2023 pm Doppler radar as of 12:30 pm was depicting generally light showers all along the Sierra Nevada. Scattered showers are also breaking out over portions of the valley floor,. A very moist subtropical jet stream continues to run from west to east across the central and eastern Pacific and into California. A…

March 11, 2023 am Even though the heaviest portion of this first storm event is behind us, rivers and streams along the Sierra Nevada are still raging. The cooler portion, if you want to call it that, of the low is now above central California. This is reflected in the freezing level which at yesterday…

March 10, 2023 pm Numerous flash flood warnings have been issued for much of Tulare County and parts of Fresno County. Rivers along the Sierra Nevada are raging due to extremely heavy rain falling on a massive snow pack. A few examples of those heavy rates up through noon are: Giant Forest 9.47, Peppermint 8.96,…

March 10, 2023 am Heavy precipitation was measured all over central California overnight with the exception of the extreme south valley which has been under a rain shadow. Rainfall along the southern Sierra Nevada from late yesterday afternoon through 5:00 this morning has generally ranged between 2 and 5 inches. More in the rainfall discussion.…

March 9, 2023 pm As of noon, precipitation had spread over all of northern California as far south as Merced. A few renegade showers are popping up over parts of Fresno and Kings Counties. Satellite imagery over the eastern Pacific is quite interesting. A mass of moisture laden clouds stretches from the California coast westward…

March 9, 2023 The first precursors of a major winter event are beginning to show up off the central coast in the form of light showers. The air mass over California is still cold. For example, the freezing level taken over Oakland a short time ago was just 4,400 feet. That will rise dramatically over…

March 8, 2023 pm A little secondary low which developed over northern California overnight is now over north/central California and has managed to bring a few sprinkles as far south as Fresno County. Where the real weather is developing, however, is over the eastern Pacific Ocean as the first of at least three weather systems…

March 8, 2023 Today is the last day of the overall pattern that resulted in a cold, wet February and cooler than average conditions for the first week in March. A low center will slide southward along the British Columbia coast to a position west of the Oregon coast Thursday while a strong, moist west…