Flight cancellations across the US are rapidly increasing as strong storms and widening heatwaves threaten the Midwest and East Coast power grids and may set high temperature records in large regions. According to data from the US National Weather Service, as of Monday afternoon, more than 165 million people were under various levels of high temperature warnings or warnings. The affected area extends from the Great Plains to the Great Lakes region and the southern hinterland of the United States, forming a continuous stretch of intense tropics. At the edge of this heat zone, Philly residents are preparing to deal with coin-sized hail; in Chicago, after the destructive storm, the transportation department suspended operations on some commuter rail lines to clean up debris on the tracks. More than 640 flights have been cancelled at Chicago's two major airports, according to FlightAware data. The US National Railroad Passenger Transport Company said that due to the deformation of the railroad tracks due to high temperatures, trains had to slow down, and trains passing through Chicago, St. Louis, New Orleans, and Houston were all delayed. High temperatures are putting pressure on the US grid. The Southwest Power Pool, which covers parts of 20 states, and independent system operators in mainland China have warned that demand for electricity is soaring. On Monday afternoon, spot electricity prices at the northern hub of the Southwest Electric Pool rose to 441 US dollars per megawatt-hour. Within the jurisdiction of independent system operators in mainland China, the price of power hubs in Minnesota is close to $350 per megawatt-hour.

Flight cancellations across the US are rapidly increasing as strong storms and widening heatwaves threaten the Midwest and East Coast power grids and may set high temperature records in large regions. According to data from the US National Weather Service, as of Monday afternoon, more than 165 million people were under various levels of high temperature warnings or warnings. The affected area extends from the Great Plains to the Great Lakes region and the southern hinterland of the United States, forming a continuous stretch of intense tropics. At the edge of this heat zone, Philly residents are preparing to deal with coin-sized hail; in Chicago, after the destructive storm, the transportation department suspended operations on some commuter rail lines to clean up debris on the tracks. More than 640 flights have been cancelled at Chicago's two major airports, according to FlightAware data. The US National Railroad Passenger Transport Company said that due to the deformation of the railroad tracks due to high temperatures, trains had to slow down, and trains passing through Chicago, St. Louis, New Orleans, and Houston were all delayed. High temperatures are putting pressure on the US grid. The Southwest Power Pool, which covers parts of 20 states, and independent system operators in mainland China have warned that demand for electricity is soaring. On Monday afternoon, spot electricity prices at the northern hub of the Southwest Electric Pool rose to 441 US dollars per megawatt-hour. Within the jurisdiction of independent system operators in mainland China, the price of power hubs in Minnesota is close to $350 per megawatt-hour.