Currently in Los Angeles — July 15 2022

The weather, currently.

A sunny and hot weekend

Get ready for plenty of sunshine this weekend! Those beautiful rays will bring warm temperatures with them, so break out your As Seen On TV portable fan/water gun and get spritzing. Friday will be the most tame with highs near 88°F, and Saturday and Sunday are expected to reach 90°F. You’ll have some scattered clouds throughout the days, but don’t count on them to provide much shelter from the sun, even on Sunday, when they’ll be teasing you most. I recommend moving your outdoors time to the roughly 7 – 10 PM evening, where temperatures will move into the 70’s. If you’re up even later, expect lows to consistently hit the mid-60’s this weekend. Nights should be mostly clear.

—Renée Reizman

What you need to know, currently.

As heat waves sweep across the globe, inland lake evaporation is increasing, according to a new NASA-funded study in Nature Communications. Researchers studied more than 1.42 million lakes around the planet and found that between 1985 and 2018, average annual evaporation had increased at a rate of 3.12 cubic kilometers per year.

This seems fairly obvious if you’ve been following the news of bodies emerging from ever-shrinking Lake Mead, but because lakes and oceans make the bottom of the hydrological cycle having accurate data on evaporation helps scientists to better predict future weather patterns and direct water resources.

“From a global perspective,” study author Gang Zhao told NASA, “the total reservoir evaporation can be larger than the combined use of domestic and industrial water...This suggests that reservoir evaporation is an indispensable factor in water management, especially in times of drought and global warming.”

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