Seasonal Pattern Through This Weekend; After Mid-Next Week Another Heatwave Is Waiting Right On Into That Weekend


This morning I issued a Wind Advisory for some mountain and desert regions.  This wind advisory is due to the trough moving into the forecast region that will knock temperatures down for several days starting on Sunday.  But do not think that the heat is done with yet.  This is September and September in Southern California has what is known as a seesaw pattern.  The seesaw pattern is a pattern of cold and hot periods.  The cold is due to the troughs moving through the region, most of them dry.  The heat is due to the ridges forming overhead after and behind these troughs.  This is an up and down pattern of temperatures this month.

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Before I resume Southern California… On Saturday with the trough moving into Washington State, Idaha, and Salt Lake City, Utah … will have a risk of heavy rain/thunderstorms, even across Seattle …

The Wind Advisory I issued is for the following areas for this Saturday evening into Sunday; Kern/LA Desert … Barstow/Lucerne/Baker/29 Palms Marine Base … JTNP/Whitewater/Coachella Valley … Eastern slopes of the RIV/San Diego Mountains … All of Imperial County … Western SLO County … Santa Barbara County … Kern Valley … San Diego Deserts … and it states;

The first trough moving into California of the Fall 2019 Season will be a dry one and thus because of this it’ll bring cooler air with it.  As Saturday evening and overnight hits, wind gusts in the advisory zones will be from 30-40 mph with some isolated 50 mph gusts expected on the eastern slopes of the mountain regions.

This same trough is responsible for effectively ending the monsoon season.  However, just because monsoon season is ending does not mean our shower/thunderstorm risk will end this month.

As stated in many previous updates, I said that this season’s troughs will suck up tropical moisture from the south this season, therefore the risk still remains.  We already saw my forecast come true this last week with the thunderstorms across the region, even as far west as Bakersfield.

So… this is a taste of the fall troughs and a return on Saturday evening/night for the nominal mtn/desert winds.  Winds will also hit the Vandenberg/SLO and Santa Barbara zones then due to a northwest flow behind the trough.

After Thursday of this next week we will have a ridge form over the region.  The temperatures as a result will surge through the triple-digit mark Friday into the Weekend.

The only way we will see more tropical moisture into our region for precipitation is if a Hurricane forms south of here where Juliette did.  That hurricane was responsible for the storm activity the last week.  We have the troughs… we just need the hurricanes.

So there is the update that will last awhile.

As always, stay tuned to official forecasts from Southern California Weather Force for updates …

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