US Edition60 Million Under Hot Weather Advisories—And Heat Dome Could Last Weeks
SOUTH AND MIDWEST UNITED STATES, JUL 21 – A heat dome traps hot, humid air causing dangerous heat indexes up to 115 degrees and impacting more than 90 million people, with climate change increasing such events' frequency.
- On July 22, the summer heat dome spreads across the southern United States, with over 70 million Americans under extreme heat warnings, the National Weather Service reported.
- A bulge in the jet stream creates a high-pressure bubble that traps heat, as Climate Central analysis shows.
- NWS Storm Prediction Center reveals increased storm activity, with heat index values expected to exceed temperatures by five to ten degrees and overnight lows not falling below the mid-70s.
- `There is high confidence that heat will reach levels that would affect anyone without sufficient cooling and/or adequate hydration,` National Weather Service warned, while over 90 million people are under heat alerts.
- Forecasts suggest the heat dome may linger into the last weekend of July, with August forecast to be another hot month for much of the country, the Climate Prediction Center says.
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17 Articles
Houston Hits 100° for First Time This Year—But Is It as Hot as Last Summer?
HOUSTON, Texas (KIAH) -- Houston officially hit 100° today for the first time in 2025, marking a psychological milestone in what has otherwise been a relatively tame summer so far. Not as hot as last year—until nowLooking at the same time period in 2024, Houston had already hit 98° four times by mid-July and notched its first 100° day in early July. This year, by comparison, we had only reached 98° twice since June—until today. Now, with the fi…
90 million under heat alerts as US heat dome intensifies
A massive heat dome is driving extreme temperatures across the central and eastern United States, affecting more than 90 million people. The National Weather Service issued heat alerts in areas stretching from the Gulf Coast through the Midwest and into the Northeast. https://twitter.com/NWSWPC/status/1947384029495349351 Cities like Chicago, St. Louis and Memphis could reach their hottest temperatures of the year, with heat index values — the “…
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