https://www.newscientist.com/article/2174889-warming-arctic-could-be-behind-heatwave-sweeping-northern-hemisphere/

The heatwaves have killed dozens in Japan and Korea, triggered wildfires in California and Sweden, and led to prolonged dry weather in the UK and across northern Europe, raising temperatures beyond 30°C in Scandinavian sectors of the Arctic Circle. In Greece, the deadliest wildfires in more than a decade have claimed at least 74 lives.

“It could persist for weeks, potentially for months,” a spokesperson for the UK Meteorological Office told New Scientist.