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Early-season heat dome brings highest temperatures in years to parts of Eastern US

  • Millions of residents throughout the Midwest and Eastern United States experienced an extensive heat wave in late June 2025, driven by a heat dome causing unusually high temperatures.
  • Meteorologists explained that a high-pressure heat dome is trapping heat and moisture, leading to dangerously high temperatures across much of the eastern U.S. for several days, lasting at least until midweek.
  • Temperatures reached near 100 degrees in urban areas including Baltimore, Washington D.C., Philadelphia, New York City, and Chicago, with heat indices hitting 105 to 108 degrees in some locations.
  • Governor Kathy Hochul issued emergency declarations across 32 counties in New York in response to severe storms and anticipated extreme heat, with at least four fatalities reported from storm-related events, including one caused by a tree striking a house.
  • The heat wave prompted health advisories and warnings across several states, with officials urging hydration, breaks, and caution as oppressive temperatures and health risks continued to increase.
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A widespread heat wave with record temperatures and oppressive humidity gripped the eastern U.S. on Tuesday as a heat dome reached its peak.

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This week a heat dome has raised temperatures across the northeast and Midwest of the United States. Since last Sunday, tens of millions of Americans face an extreme and prolonged heat risk that affects anyone who does not have access to an effect cooling or adequate hydration. Continue reading

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WFAA 8abc broke the news in Dallas, United States on Sunday, June 22, 2025.
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