Category: Forecast

September 23, 2017 Summary:  Temperatures are generally 3 to 5 degrees milder this morning then they were yesterday pre-dawn.  However, many ag stations are down into the 40s once again, which is very chilly for this early in the season.  The upper low is centered over Nevada and Idaho and has  not moved much over…

September 22, 2017 Summary:  It was quite chilly last night.  Lows in most locations fell well down into the 40s.  the coldest I could find was 43 degrees at both Lindcove and Strathmore.  It’s a surprise to no one that these readings are 4 to 6 weeks ahead of schedule.  Expect similar conditions tonight.  …

September 21, 2017 Summary:  For this early in the year, a well defined cold front is moving down the valley.  Light rain has occurred along the east side from Merced County all the way along the foothills of Tulare County.  The front will soon sweep through Kern County with dry weather quickly returning.  A strong…

September 20, 2017 Summary:  Temperatures are anywhere from 2 to 8 degrees cooler this morning as compared to 24 hours ago.  Most locations are in the 50s this morning with Kern County being in the upper 50s to the low 60s.  We remain under a very large trough of low pressure which is centered over…

September 19, 2017 Summary:  The cloud shield from a big trough of low pressure which is now centered over Idaho and western Montana has spread as far south as Merced.  There are also some upslope clouds developing over the south valley along the north facing slopes of the Tehachapi Mountains and along the Diablo Range. …

September 18, 2017 Summary:  The newest trough of low pressure is now moving into the Pacific Northwest with showers over Washington and Oregon and increasing clouds over far northern California.  Today will be a bit cooler as a relatively strong on shore flow is in place.  The marine layer is roughly 3,000 feet deep and…

September 16, 2017 Summary:  The latest trough of low pressure is now moving through the Pacific Northwest.  High clouds have spread as far south as Sacramento and a few high clouds may be visible here later this afternoon.  Temperatures this afternoon will struggle towards seasonal values as temporarily the marine layer is too shallow to…

September 14, 2017 Summary:  The center of circulation of an upper low we’ve been discussing for the past week has finally moved inland and is centered near the southern Nevada/California border.  The only thing currently showing up on radar are showers over southern Nevada and parts of Utah.  Today will be the coolest day in…

September 13, 2017 Summary:  Suddenly the marine layer along the coast has deepened to nearly 3,000 feet.  The sea breeze is surging through the Delta and through other gaps and passes along the Coast Range.  In fact, winds at Pacheco Pass are currently gusting to 35 MPH.  this will usher in a long awaited cooling…

September 12, 2017 Summary:  An upper low jogged a bit further north overnight and is centered roughly 300 miles to the west/southwest of Monterey.  The active portion of this storm continues to be over its far eastern and northern flanks.  That has put showers over northern California and left central and southern California largely free…