Explaining why it’s so miserably hot – Orange County Register

Blacktops, freeways, the urban mall.

Global warming, too, but that’s not all.

“And Mother Nature with this stationary high-pressure system,” adds Bill Patzert, climatologist at NASA’s Jet Propulsion Laboratory in Pasadena, explaining why it’s going to continue to be unreasonably hot for several more days.

“It’s called the triple heat whammy,” he said.

Patzert on Monday, June 19, called upon his 34 years of research at JPL to boil down the science behind the extreme heat – what can’t be seen but can be measured.

How extreme? As a high-pressure system anchored over Arizona strengthens, highs in the Inland valleys — parts of Riverside and San Bernardino counties south and west of the mountains — were expected to hit 103 to 111 on Tuesday and Wednesday, according to the National Weather Service.

Things will be a few degrees hotter in the High Desert north of the…

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