Life-threatening heat domes confounding forecasters

a map of a 2011 heat wave in the northeast US, with dark red colors indicating high temperatures in the New York region

Atmospheric Infrared Sounder, Public domain, via Wikimedia Commons

Life-threatening heat domes confounding forecasters

a map of a 2011 heat wave in the northeast US, with dark red colors indicating high temperatures in the New York region

Record-breaking temperatures seared the eastern US last month, leading to power emergencies across the region. The cause: an enormous ridge of high pressure that settled on the region, known as a heat dome.

This phenomenon has also already struck Europe and China this summer, leading to the temporary closure of the Eiffel Tower and worries about wilting rice crops, respectively. But while heat domes are easy to identify once they strike, they remain difficult to forecast — a problematic prospect in a warming world.

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