Category: Forecast

September 11, 2017/pm Summary: Scattered light showers as of the time of this writing had broken out over western Fresno and Madera Counties.  This activity was moving northwestward at a rapid pace.  Upper level low pressure is near 400 miles to the west/southwest of San Luis Obispo and is forecast to drift further north through…

September 11, 2017 Summary:  The center of a cut off low is located about 500 miles to the west/southwest of Santa Barbara.  Monsoon moisture is wrapping around the low, especially over its eastern and northern flanks.  Light showers did occur in western Fresno County during the early morning hours and isolated thunderstorms are occurring over…

September 10, 2017/pm Summary:  A cut off low remains off the southern California coast this afternoon.  The far eastern edge of the low is moving some cloud cover over mainly the southern and western portions of the valley.  Doppler radar continues to pick up scattered showers, generally just west of the Channel Islands and moving…

September 10, 2017 Summary:  Our cut off low has moved southward and is now parked about 400 miles to the west/southwest of Santa Barbara.  Along its eastern flank, showers are beginning to show up on radar over the Channel Islands up to the coast of Santa Barbara County.  The flow aloft above central California is…

September 9, 2017 Summary:  Heavy thunderstorms are pounding portions of San Bernardino and Riverside Counties this afternoon as  monsoonal moisture continues to be injected into the region.  In the meantime, we have a cut off low off the central coast which is drifting southward and has already turned the winds aloft to out of the…

September 9, 2017 Summary:  The next 72 hours will be a bit tricky.  Currently, we have an upper low which is just west of Monterey this morning with plenty of monsoonal moisture working northward from southern California into Nevada.  Models show this feature drifting southward parallel to the California coast to a position off the…

September 8, 2017 Summary:  We have a definite rain threat on our hands for late Saturday night through Monday.  Forecast models did a good job in showing the formation of a cut off low just off the coast of Monterey.  Currently, there’s no active weather associated with this low, however that will change, especially during…

September 7, 2017 Summary:  That upper low which has been off the coast of San Francisco the past few days is finally moving eastward.  Projections are that it will move through northern California today.  Already there is some thunderstorm activity over the northern Sacramento Valley.  We may see some cloudiness at times, especially over the…

September 6, 2017 Summary:  Monsoonal moisture continues to move in from the southeast via southern California.  Most of the latest batch of the monsoon is moving up the east side of the Sierra Nevada with mid level clouds over portions of the San Joaquin Valley.  The same upper level low we’ve been talking about for…

September 5, 2017 Summary:  The remains of Lidia are no more than a low pressure system off the central coast.  This low is farther out to sea and is moving to the west, ending the chance of rain for the San Joaquin Valley.  This low is forecast to move northward and eventually move through northern…