A significant heat dome is intensifying and is expected to bring triple-digit temperatures to approximately 80 million Americans across 20 states, with forecasters issuing weather warnings for much of the central United States.
Temperatures reached sweltering highs across the central U.S. on Saturday, and the dangerously hot conditions are predicted to persist into the next week. The phenomenon, where atmospheric conditions trap heat, is forecast to create blistering temperatures this weekend, with advisories extended through several days. The hottest conditions are anticipated through Monday, with temperatures expected to climb 10 to 20 degrees Fahrenheit above historical averages.
Forecasters noted that even overnight temperatures will remain uncomfortably high, contributing to heat stress. The oppressive midsummer weather is expected to impact a vast area of the country, stretching from the desert Southwest to the Gulf Coast and extending into the Midwest and Great Plains.
Some areas around Denver could see record-breaking temperatures, with readings expected to be 10 to 15 degrees Fahrenheit above normal. "It looks like it is going to be pretty much stationary in that position as we go through the week," said Bob Oravec, a meteorologist with the National Weather Service.
Western Nebraska is among the areas under an extreme heat warning, with temperatures forecast to reach 108 degrees Fahrenheit on Saturday and Sunday. The region's heat is expected to continue throughout the week, with temperatures potentially exceeding 100 degrees Fahrenheit even in normally moderate areas of Montana and Wyoming. Las Vegas is also anticipating near-record highs.
Kristian 'Flaco' Santos, an HVAC repair technician in Las Vegas, described the conditions as "brutal" while working on air conditioning units outdoors, where temperatures reached around 114 degrees Fahrenheit on Saturday. He noted that the heat can be even more intense in attics or on rooftops, where temperatures can be an additional 15 degrees warmer.
AccuWeather Senior Meteorologist Joe Lundberg stated, "The core of the brutal heat will gradually shift out of Montana and the Dakotas through Sunday and head farther south and east as we go into next week." While some relief may arrive in the central U.S. toward the following weekend, Oravec cautioned that this respite could be temporary.
Areas such as the Mid-Atlantic, Northeast, and much of the Pacific Northwest are expected to be spared from the most extreme heat. The extreme temperatures are projected to last until at least Monday, after which a gradual cooling may begin in some affected regions.
