Heatwave to next week roast areas already gripped by severe drought, plunging reservoirs and wildfires The most extensive heatwave of a scorching summer is set to descend upon much of America in the coming week, further roasting areas already gripped by severe drought, plunging reservoirs and wildfires. A massive 'heat dome’ of excessive heat will settle across the heart of the contiguous US from Monday, the National Oceanic and Atmospheric Administration forecast, bringing elevated temperatures to the Great Plains, the Great Lakes, the northern reaches of the Rocky Mountains, the Pacific northwest and California. Places used to more mild summers are set for punishing heat, with temperatures expected to breach 100F (37C) in the Dakotas and Montana, a state in which the city of Billings has already experienced 12 days above 95F (35C) this month. Areas of states including Missouri, Arkansas and Oklahoma may get “sweltering” temperatures reaching 110F (43C), Noaa said, while cities such as Des Moines, Minneapolis and Chicago will get significantly above-average heat. The latest, but most expansive, in a parade of heatwaves to sweep the US is likely to bring thunderstorms and lightning to some areas, as well as worsen drought conditions ranked as “severe” or “exceptional” that now cover two-thirds of the US west. Climate scientists have said the barrage of heatwaves over the past month, which have parched farms, caused roads to buckle and resulted in the obliteration of long-standing temperature records, are being fueled by predicted human-caused climate change – but admit to being surprised at the ferocity of the onslaught. “It’s been a severe and dangerous summer, some of the heatwaves have been devastatingly hot,” said Michael Wehner, a a senior scientist at the Lawrence Berkeley National Laboratory. “We certainly expected these type of temperatures as global warming continues but I don’t think anyone anticipated they would... |