A severe heat wave is forecast to affect 70 million people in the US, with temperatures of up to 105F (40C) expected across the southern and central states. The third major 'heat dome' event in a month is gathering strength over the weekend, spanning from the Gulf of Mexico coast to the Great Plains and the midwest.
While heatwaves are a common occurrence in American summers, climate experts warn that the regularity and severity of such events are worsening due to the human-caused climate crisis. The release of heat-trapping gases has caused global temperatures to escalate above previous levels, leading to more frequent and severe heatwaves.
Parts of the US are already experiencing extreme heat, with 88 wildfires currently being tackled by firefighters. The situation is particularly concerning for vulnerable populations, including older people, pregnant individuals, young children, and those with existing health conditions.
The UK has also been affected by hot, dry conditions in recent weeks, with wildfires burning across the country. The Foreign Office has issued advice for UK nationals travelling to the US, warning of the risks associated with extreme heat and wildfires.
Climate experts have warned that the heat dome event could potentially break records in the Denver area, while an extreme heat warning has been issued for western Nebraska.