US Weather Forecast: Heat dome sparks record temperatures in Texas, Oklahoma, Nebraska and North Dakota | Today’s news
A dangerous heat dome is gripping much of the central United States, pushing temperatures well above normal and putting nearly 80 million people under heat and extreme heat warnings. Forecasters say intense heat stretching from Texas to North Dakota is likely to last into next week, with high humidity and unusually warm nights increasing the risk of heat-related illness.
Here’s what you need to know about the latest heat wave.
What is a heat dome?
A heat dome is a weather pattern caused by a strong area of high atmospheric pressure that traps hot air beneath it, much like a lid on a pot.
As the air descends, it compresses and warms further, preventing cooler air or storm systems from moving into the area. This allows temperatures to remain elevated for several consecutive days, often creating long and dangerous heat waves.
Meteorologists say the current heat dome is expected to remain largely stationary over the next week, extending extreme conditions across much of the central US.
Which areas are affected?
The heat wave covers a large area of the country, including:
Parts of Colorado, Montana and Wyoming
Some areas around Denver could see temperatures 10°F to 15°F above average, while western Nebraska is forecast to reach 108°F (42°C). Temperatures in Las Vegas are expected to be around 114°F (45°C).
Meanwhile, the mid-Atlantic, Northeast and much of the Pacific Northwest are expected to escape the worst of the heat.
Why is this heat wave considered dangerous?
The danger comes not only from extremely high daytime temperatures, but also from unusually warm nights.
Normally, temperatures drop overnight, allowing people and infrastructure to cool down. This time, overnight lows are expected to remain elevated, giving little opportunity for recovery and allowing heat stress to build over several days.
High humidity will make conditions even more oppressive by pushing the heat index well above the actual air temperature.
Health professionals warn that long-term exposure can increase the risk of:
Older adults, young children, people with chronic illnesses and outdoor workers are considered to be most vulnerable.
How long will the heat last?
The heat dome is expected to remain nearly stationary for most of next week, according to National Weather Service meteorologists.
The most intense heat is forecast to move into Texas and parts of the Gulf Coast by midweek. Some relief could arrive in parts of the central United States over the next weekend, though forecasters caution that any cooling may be temporary.
Does climate change play a role?
Climate experts say that individual weather events cannot always be directly attributed to real-time climate change. However, rising greenhouse gas emissions have made extreme heat more frequent and intense.
According to Climate Central, today’s heat waves are in line with decades-old climate projections that predicted:
Higher temperature extremes
Higher night temperatures
The National Center for Environmental Information also reported that the continental United States experienced the second warmest first half of the year on record in 2026, while June was the country’s 18th warmest June on record.
What precautions should people take?
Authorities are urging residents of affected areas to:
Stay hydrated throughout the day.
Avoid strenuous outdoor activities during the hottest hours.
Spend time in air-conditioned buildings or designated cooling centers.
Wear light, loose-fitting clothing.
Check on elderly neighbors, children and vulnerable family members.
Never leave children or pets in parked vehicles.
With temperatures expected to remain dangerously high for several more days, officials say taking heat safety precautions will be critical to reducing the risk of serious illness.
Read also | Heat Worries US Wheat Growers As Crop Prices Rise
