Sweltering Heat Wave Grips Nearly Half of the US, Fueling Climate Change Concerns

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Sweltering Heat Wave Grips Nearly Half of the US, Fueling Climate Change Concerns

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Nearly half the United States is currently gripped by a dangerous, climate change-driven heat wave, with experts attributing the intensity and frequency of these extreme events to human activity. According to Climate Central, an early-season heat wave beginning June twentieth is bringing the hottest temperatures of the year so far to the central and eastern regions of the country. The heat started intensifying across the Plains before spreading to the Midwest, Great Lakes, Ohio Valley, and much of the East Coast. This event is expected to continue beyond June twenty-fourth, impacting an estimated one hundred seventy-four million people, nearly half the nation’s population. Meteorologists note that the temperatures in parts of Nebraska, South Dakota, and Minnesota are running twenty to twenty-five degrees Fahrenheit above the average recorded between nineteen ninety-one and twenty twenty. As the high-pressure system, which has lingered over the Southwest for weeks, shifts to form a heat dome over the eastern half of the country, cities including New York City, Chicago, Philadelphia, Indianapolis, Charlotte, Washington DC, Louisville, Detroit, Milwaukee, Cincinnati, Pittsburgh, and Richmond are forecast to experience multiple days of major to extreme heat risk. Daytime highs are expected to exceed ninety-five to one hundred degrees Fahrenheit, and high humidity will drive the heat index above one hundred five, significantly raising the risk of heat-related illness. Overnight lows, projected to remain fifteen to twenty degrees above normal, may break record high minimum temperatures from the Plains to the Great Lakes.

This intense and prolonged heat arrives on the heels of a spring that, despite a cool May in some regions, still ended up warmer than average across the country. The National Oceanic and Atmospheric Administration’s Climate Prediction Center had forecasted well above average June temperatures for most of the United States, except parts of the southern and central Great Plains. While the South and East have seen plenty of rainfall and some improvement in drought conditions, the Pacific Northwest and Northern Plains are facing below average precipitation, raising concerns about drought expansion as the summer progresses.

Globally, June twenty twenty-five has marked a milestone month for climate ambition, with international events like the Global NDC Conference in Berlin and a global summit on climate change and human rights hosted by the University of Oxford. These gatherings are focused on accelerating climate commitments ahead of COP30 later this year. As authorities and experts warn, recurring patterns of extreme heat, shifting precipitation, and regionally variable drought are clear signals of a rapidly changing climate, fueling urgent calls for innovation, adaptation, and robust policymaking in the United States and around the world.