Currently in Chicago — July 15th, 2022

The weather, currently.

Wet End To The Week

Takeaways for Chicago's weather:

1. Wet End To The Week

2. Back To The 80s This Weekend

3. Warmer Next Week

Occasional showers and a few thunder thunderstorms on Friday. No threat of severe weather.  The cloud cover will hold our highs in the upper 70s. Warmer this weekend with only a few scattered showers and thunderstorms but many dry hours. Highs hit the upper 80s Saturday and drop to the lower 80s Sunday. Partly sunny most of the weekend. More sunshine Monday through Wednesday next week. Heat and humidity build back with highs in the upper 80s to lower 90s. Cooler lakeside with highs closer to 80°F.

Tim McGill

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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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