Thu Jul 24 07:30:00 UTC 2025: Here’s a summary of the text and a rewritten news article:

**Summary:**

A massive heat dome is trapping heat over the eastern U.S., creating dangerous conditions for tens of millions of people. High humidity is exacerbating the problem, leading to unusually warm overnight temperatures. The heat wave is expected to last at least a week, moving across different regions of the East Coast throughout the week. Climate change is contributing to the increased frequency of prolonged heat events.

**News Article:**

**Millions Brace for Relentless Heat Dome Sweeping Eastern U.S.**

**New York, NY –** A sweltering heat dome has descended upon the eastern half of the United States, putting tens of millions of people under heat advisories and warnings. The National Weather Service (NWS) is forecasting a week of extreme heat with high humidity, creating potentially dangerous conditions for vulnerable populations.

As of July 23rd, over 35 million people were at major or extreme risk from the heat, primarily in the Mississippi River Valley. Forecasters predict that number will nearly double by July 25th, reaching close to 90 million as the heat dome shifts eastward. The NWS warns that most of the eastern half of the country will be impacted.

“Even though it’s midsummer, this is pretty notable,” said Bryan Jackson, a meteorologist at the NWS Weather Prediction Center.

The heat dome, a high-pressure system that traps heat, is also causing high humidity. These high levels of moisture are preventing overnight temperatures from dropping significantly, offering little relief from the heat. Record-high minimum temperatures are expected in the mid-Atlantic, the Carolinas, and the Southeast.

The heat dome’s location will shift over the coming days. While the Midwest has already experienced intense heat, the Ohio River Valley is expected to face the worst conditions on July 24th, followed by the Eastern Seaboard on July 25th. The Southeast will likely face the most severe heat risk throughout the weekend and into next week.

Meteorologists note that long stretches of extreme heat are becoming more frequent due to climate change. A recent analysis shows increasing “heat streaks” – periods of consecutive days with record-high temperatures – across the eastern U.S.

Residents in affected areas are urged to take precautions to stay safe, including staying hydrated, seeking air-conditioned environments, and checking on vulnerable neighbors.

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