Much of the United States is caught in a dangerous double threat, with a punishing heat wave and fast-moving wildfires bearing down on the country just as the July 4 holiday weekend approaches. According to forecasters, around 170 million people are under heat alerts as record high temperatures take hold across a huge stretch of the nation, straining people, crews and infrastructure alike.
The heat is baking roughly half the country, with temperatures expected to soar into the high 90s across most of the Northeast and Midwest, and it is set to feel even hotter than the thermometer suggests. The heat index has already topped 100 degrees in Chicago, St. Louis and Milwaukee, where crews battling a large fire have been placed on reduced work cycles, encouraged to take breaks, cool off and rehydrate.
Forecasters warn the situation is likely to get worse before it gets better. As the heat pushes east, the numbers become extreme: Columbus is expected to reach around 107, while it could feel like 111 in Nashville and as high as 114 in Memphis. Richmond is forecast near 102 and New York City is set to feel close to 100, with the heat building across the eastern half of the country through Thursday and Friday and lingering in the Carolinas right through the Fourth.
Out West, extremely dry and windy conditions are fuelling massive wildfires. In Colorado, the ferocious Aspen Acres fire has grown into the largest wildfire now burning in the state, raging northwest of Colorado City. According to the latest figures, it has destroyed at least 180 buildings and burned around 55,000 acres, having forced hundreds of people to evacuate, and residents who fled have not yet been allowed back to their homes. In Utah, evacuees were allowed back into the Cottonwood burn zone for the first time, among them campground managers who described having only about five minutes to grab what they could as the flames roared through like a freight train, ultimately losing everything.
The twin hazards are already reshaping plans for the holiday period. In Philadelphia, World Cup organizers are scaling back viewing schedules at several fan fests because of the heat, while in Utah most fireworks are now banned outright. The governors of both Utah and Colorado have urged residents to be cautious as they celebrate, warning that a single careless spark could ignite new fires in tinder-dry conditions.
Officials are especially concerned about the days ahead, when rising temperatures and dry conditions combine to heighten the fire risk across more than half the country. With overnight temperatures failing to cool off in many places, the heat becomes particularly dangerous, and authorities say the dangerous stretch is unlikely to ease quickly, leaving communities to brace for an uncomfortable and potentially hazardous holiday weekend.
As the heat wave has worn on, its toll on health has begun to show. In Pennsylvania, more than a hundred people were treated after spending hours outside in the extreme conditions, according to the latest reporting. Across the Midwest, the Centers for Disease Control and Prevention said heat-related emergency room visits were running some thirty-six times higher this week than they had been the week before, an indication of how quickly the heat has pushed people into medical distress.
In New York City, the real temperature climbed to 100 degrees, with the heat index reaching 106, and the wider stretch from Memphis to Raleigh and up to Philadelphia and New York felt like almost 110. The heat has also begun to disrupt daily life beyond the risk to individuals, with rail service delayed because of the conditions and holiday events in major cities being cancelled or postponed, even as concern grows over the strain being placed on the power grid.
Forecasters did offer a first hint of relief, with cooler air beginning to work its way into the Great Lakes and the interior Northeast. For much of the country, however, the reprieve remained some way off, and officials continued to urge people to limit their time outdoors, stay hydrated and check on neighbours and family members as the dangerous conditions persisted into the holiday.