Heat Dome Grips Central US with Record Temperatures

An intense heat dome has gripped much of the central United States, pushing temperatures dangerously high across multiple states. According to The Guardian, at least 40 million people were under extreme heat warnings on Sunday, with heat indexes exceeding 100F (38C) stretching from Minnesota down to Mississippi and extending west into southern California and Nevada.

DailyMail.com reported that the heat dome is affecting about 70-80 million Americans across 20 states, with temperatures expected to climb 10 to 20F above historical averages. The hottest conditions were forecast through Monday, with dangerously hot weather from Dallas to North Dakota pushing into next week.

The National Weather Service (NWS) warned that the heat dome would create blistering temperatures this weekend, and advisories have been extended through the coming days. Meteorologists noted that overnight temperatures will remain uncomfortably high, allowing heat stress to build as the bad weather lingers. The oppressive midsummer weather was forecast to affect a huge stretch of the country, from the desert Southwest to the Gulf Coast and reaching up into the Midwest and Great Plains.

The Guardian highlighted that children, older adults, and people with certain medical conditions are especially at risk of serious conditions including heat stroke or even death. Experts recommend seeking out air conditioning or a cooling center, drinking enough water, and limiting time under direct sun. The heat wave is expected to persist through the week, with temporary relief possible by next weekend.

NPR reported that this is the third major heat dome in a month, affecting roughly 70 million people from New Mexico to North Carolina. The extreme weather raises the risk of heat-related illness, particularly for those without easy access to air conditioning. Daytime temperatures are reaching into the triple digits, with high humidity making it feel even hotter.

The NWS issued warnings that remained in effect through at least Tuesday for Arkansas, Tennessee, and parts of the Gulf Coast. Marc Chenard, a National Weather Service meteorologist, acknowledged that the intensity of these heat waves is unusual, likely influenced by El Niño. This cyclical warming of the Pacific Ocean increases the odds of warmer temperatures in North America.

NPR also noted that research shows climate change is making heat waves hotter and more frequent. A survey conducted last year found that 65% of Americans are at least 'somewhat worried' about global warming, with 29% saying they are 'very worried'. The latest U.S. heat wave comes as France and Spain battle wildfires fueled by similar conditions in Europe.

DailyMail.com added that the massive high-pressure system has settled over at least 15 states, including parts of California, Arizona, Nevada, Utah, Colorado, Oregon, Idaho, Montana, Wyoming, New Mexico, Texas, Minnesota, Nebraska and the Dakotas. Widespread extreme heat warnings have been issued in multiple states and are expected to remain in effect through at least Sunday.

The NWS warned that car interiors will reach lethal temperatures in a matter of minutes. Extreme heat soaring past 120F can cause the human body to struggle to cool itself, leading to life-threatening emergencies like heat stroke. The agency advised avoiding alcohol, high-protein meals, and sitting in cars for any length of time.

The heat dome is also expected to combine with strengthening winds in the Northwest, sending the risk of wildfires skyrocketing. AccuWeather's expert meteorologist Chad Merrill warned that uncontrolled wildfires could blow smoke towards the Northern Plains, Midwest, Great Lakes and Northeast throughout August.