Category: Forecast

  July 23, 2018 Summary: Upper level high pressure has been centered over Texas and is now moving westward into New Mexico.  This will have little impact on valley weather and temperatures today, but the latest heat wave will begin Tuesday and continue through Friday.  The high itself, by midweek, will be centered over Arizona…

July 21, 2018 Summary: Upper level high pressure continues to be centered over Texas this morning, allowing slight decreases in barometric pressure aloft.  This will allow temperatures to marginally come down from today through Monday, but even so, temperatures should remain slightly above average.  The marine layer along the coast has deepened a little and…

July 20, 2018 Summary: Yesterday was again very hot throughout the lower elevations of central California.  Hottest locations in the valley topped out at around 107 with all locations well above the century mark.  This will occur again today, but with a bit of luck, temperatures will lower into the upper 90s to the lower…

  July 19, 2018 Summary: The easterly tropical wave that moved through central and southern California yesterday has moved off shore.  The cloudiness associated with the wave has also moved off shore, revealing mostly clear skies over central California this morning.  The flow aloft remains out of the east today and, with daytime heating,  more…

July 18, 2018 Summary: Yet another very hot day is on tap.  The overall weather picture shows strong upper level high pressure centered just to our north.  It has the winds aloft out of the east.   Meanwhile, over Nevada and southern California a batch of monsoon moisture is approaching.  Add to that an easterly tropical…

July 17, 2018 Summary: High pressure at the mid and upper levels of the atmosphere is centered over northern California.  This will cause temperatures to climb to well above average levels, generally ranging between 102 and 107.  It is possible, though, that cloud cover could interfere with that Wednesday and Thursday.  The clockwise flow around…

July 16, 2018 Summary: Get ready for a hot week.  Upper level high pressure is just off the southern California coast in a position to drive temperatures well above the century mark.  The placement of the high now has the winds aloft over northern California out of the west and out of the east over…

July 14, 2018 Summary: High pressure aloft is centering itself just off the southern California coast.  The winds aloft are becoming out of the southwest which is unfavorable for monsoon moisture to work its way north.  There is enough available moisture at the mid and high levels for isolated thunderstorms over the  high Sierra each…

July 13, 2018 Summary: Thunderstorms yesterday afternoon drifted off the Sierra Nevada and fell apart.  However, there was enough moisture for a few sprinkles at a few locations, but nothing measurable.  The main batch of monsoon  moisture has now moved into northern California with the southern limit of the cloud cover moving up to Fresno…

July 12, 2018 Summary: A great deal of cloudiness covers the southern two-third of California this morning.  Most of the clouds are leftovers from thunderstorms over Nevada and the southern Sierra Nevada.  We have a very warm bubble of subsiding air above us, indicative of high pressure aloft.  The freezing level over Oakland this  morning…