Category: Forecast

February 8, 2020 Summary: A dry cold front is currently moving through the northern San Joaquin Valley.  It’s difficult to tell there’s even a frontal band there as very little cloud cover is evident.  Behind the front up into the Pacific Northwest, a cold wave of low pressure stretches from Oregon to Wyoming.  This wave…

February 7, 2020 Summary: Even despite daytime  highs yesterday being in the mid 60s, a number of frost stations still managed to chill into the lower 30s last night.  but, for the first time in several mornings, no location made it down into the upper 20s.   Currently, upper level high pressure is retrograding out…

February 7, 2020 Summary: The warming trend that began in earnest yesterday continues today as temperatures were up 3 to 5 degrees over yesterday’s temps.  As of 1:00pm, many locations were already approaching the mid 60s.  also, dew points are substantially higher, which is discussed below in the frost section.   Overall, that pattern shows…

February 7, 2020 Summary: Another frosty morning in some areas.  However, a number of locations, especially in Kern County, were above freezing.  Dew points will begin to nudge up today as upper level high pressure just off the California coast continues to dominate our pattern.  The freezing level this morning above Vandenberg is 13100 feet. …

February 6, 2020 Summary: Temperatures this afternoon are running 5 to 7 degrees warmer than 24 hours ago and will end up in the lower 60s at most locations.  Rather dramatic warming is occurring above the valley floor.  Sandberg at the 4,100 foot elevation is reporting 66 degrees, which is 14 degrees warmer than yesterday…

February 6, 2020 Summary: Another night of subfreezing conditions as temperatures were generally in the upper 20s and lower 30s throughout the citrus belt.  The overall pattern, however, is definitely turning in the proper direction for modification.  The northerly flow which resulted in freeze conditions the past few nights has  now been cut off.  A…

February 5, 2020 Summary: Rapid warming is occurring just above the valley floor this afternoon.  Both Sandberg and Blue Canyon are reporting 52 degrees.  Sandberg is at 4,100 feet and Blue Canyon 5,600 feet and they’re both 14 degrees warmer than 24 hours ago.  On the valley floor, temperatures are 3 to 4 degrees warmer…

February 5, 2020 Summary: Temperatures overnight were uniformly in the mid to upper 20s.  finally, there is plenty of evidence this morning that the modification process has begun.  The freezing level yesterday was 4,100 feet.  That jumped up to 10,100 feet over Vandenberg this morning and 10,200 over Oakland.  This is a good indication that…

February 4, 2020 Summary: Dew points at most locations are lower this afternoon than they were yesterday afternoon and are running in the upper teens to the mid 20s.  interestingly enough, the lowest dew points are in southeastern Tulare County and Kern County, which is a flip flop from what we’d normally see.  These conditions…

February 4, 2020 Summary: Temperatures overnight in the very coldest locations dropped to 23 to 24 degrees.  Most protected frost stations ranged from 26 to 28, which was certainly acceptable.  Similar conditions can be expected tonight.  the freezing level has only marginally gone up.  The sounding over Vandenberg AFB pegged the freezing level at 4,100…