Category: Forecast

July 26, 2019 Summary: The latest wave of monsoonal moisture has now moved northward out of the area.  There are still a few showers over the back country of Mariposa and Madera Counties and they will shortly move into Nevada.  Even though the bulk of the moisture has moved out, enough mid and high level…

July 25, 2019 Summary: Monsoonal moisture continues to move northward due to the clockwise circulation around strong upper level high pressure over the Four Corners region.  Like yesterday, there will be more thunderstorms firing up over the southern Sierra Nevada with isolated storms popping up over the mountains and deserts of southern California, including the…

July 24, 2019 Summary: The first round of monsoonal moisture yesterday resulted in measurable rain in isolated locations in Kern County.  Most locations, however, received either trace amounts or nothing, which is typical with these events.  Considerably less cloud cover will be observed today.  However, there is another batch of monsoonal moisture currently in northern…

July 23, 2019 Summary: Variable cloudiness has spread into central California from the south via the monsoon.  As of 7:00am, Doppler radar was showing scattered showers over the deserts and mountains of Kern County and even an isolated thunderstorm over Tehachapi.  This is the first round of monsoon moisture this season.  It’s possible that from…

 July 22, 2019 Summary: Today begins a string of triple digit days.  Expect this to last through the end of the week.  A classic summertime pattern continues to develop as strong upper level high pressure centers over the Four Corners region of the Desert Southwest.  The high will continue to expand westward and northward, eventually…

 July 20, 2019 Summary: The marine layer is roughly 2,800 feet deep this morning.  Satellite imagery indicates the coastal low clouds have penetrated well inland and cover most of the coastal and intermediate valleys that separate the coastal environment from the valley.  Some of this modified sea breeze is moving over the gaps and passes…

 July 19, 2019 Summary: The main high center is located over central Baja and is far enough to the south to allow a weak trough to move into the Pacific Northwest and weaken the upper high above California.  As is typical this time of year, the result will be subtle with marginal cooling today and…

July 18, 2019 Summary: Typically this time of year, changes in our weather are very subtle, generally just minor changes in temperature and that certainly will be the case for the remainder of the week.  Upper level high pressure over Baja has expanded a little farther north and this will allow for a few degrees…

 July 17, 2019 Summary: Even though the marine layer is almost 3,000 feet deep this  morning, the amount of marine air moving into the valley is minimal due to a very weak onshore flow.  It’s possible temperatures could  come down a degree or two, mainly from Fresno County north, but  most locations will see temperatures…

 July 16, 2019 Summary: Upper level high pressure continues to be centered near the Arizona/New Mexico border.  The other item of interest is a weak trough of low pressure over the Pacific Northwest extending southward into northern California.  This will keep a dry, west/southwest flow going.  The fact that central California is essentially between the…