April 18, 2020 at 2:03 pm

First Heatwave Of The Season Strikes End Week Through The End Of The Month; Near Triple Digit Temps Expected In Metros


The first heatwave of the season will strike starting this end week into the weekend so a good week from now.  The heatwave will continue to build in strength through early week (April 26th onward through the end of the month as a ridge of high pressure remains static over the area.  This is your ‘see-saw’ pattern I discussed would happen this month.  We had the rain and cold and now we switch to the heat.

Some of you are welcoming of the heat but if you are inland I would advise to make sure your air conditioning is up to par before it hits.  Due to so many people being home and out of work, it will be a tough start to the Spring 2020 heatwave season.  Temperatures are expected to be in the mid-90s for the inland metro zones with temperatures between 105-110 for the low deserts.  Yes Imperial … this is your first major heatwave on a norm you are use to.

We are nearing the end of the 2019-2020 rain season and my forecast for 9-13″ of rain with 13″ of rain being around as high as I wanted it, stating we would see an average or just below average season was overshot by an inch.  Just an inch due to the cutoff low that brought 3″ of rainfall this month to Downtown Los Angeles.  Had it not been for that freak system, we would have been sitting right at 9-13″ so in other words as long as we don’t get another major system in May like the one this month … my forecast was not bad at all as we are around or just below the average in Downtown Los Angeles for rainfall.

My preliminary Summer forecast is for average temperatures for the start with above for the mid/end season so we may actually be looking at an above average Summer in terms of temperatures, which means a lot of heat to contend with, which is opposite of what I called for last Summer and we did indeed end up cooler than average.  I will continue to monitor super long range values as we move through May, in-which we will have plenty of classic May Gray and June Gloom days with the marine layer.

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