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Orange, CA climate


enigma99

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I was looking at weather underground here in the state of California and noticed something odd happening down in Villa Park currently at 11:15PM. Some areas are 78F and within walkable distance it's 18-20 degrees cooler.  Obviously some compression heating up the air, but it's it combining with marine air and thus the temp drop?

 

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How far away from the great Pacific Ocean? That would be the beneficent maritime effect that gives California “outdoor air conditioning” year round!

What you look for is what is looking

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On 1/17/2021 at 12:21 AM, enigma99 said:

I was looking at weather underground here in the state of California and noticed something odd happening down in Villa Park currently at 11:15PM. Some areas are 78F and within walkable distance it's 18-20 degrees cooler.  Obviously some compression heating up the air, but it's it combining with marine air and thus the temp drop?

 

orange.png

Would bet this is a direct influence of terrain + the on going Santa Ana winds ..and how far the cooler marine air can penetrate under such conditions ( would influence temps in the lowest, most wind sheltered locations most easily ) Noticed the same thing over the weekend while checking on temps. across both San Diego county, and the overall L.A. Basin both at 10:30 and 11:30PM both Sat./Sunday nights.  Most dramatic were 3 Neighborhood Wx stations right on the coast around Malibu. 3 were in the 81-84F range while a couple others -within walking distance- were in the lower 70s at the same time.

Some others, directly south of where the 5 comes out of Santa Clarita into L.A., were in the upper 80s while others in more wind sheltered locations nearby  were much cooler. Same pattern was very evident around north/ east county areas of San Diego.

Obviously, urban heat island influence .. and bad station data can influence such readings also  though when it is bad data, i notice that particular station ( or two ) stand out compared to a majority of others in a given area.  Over the weekend, it was quite obvious Santa Ana related heating was what was keeping so many areas quite " hot " so late into both evenings, even right at the coast.

 

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