World

A 'prolonged' and 'dangerous' heatwave is set to intensify across the US

Euronews World · 2026-07-01

AI SUMMARY

• What happened: A dangerous heatwave is forecasted to intensify across the eastern United States, with temperatures expected to reach between 32°C and 40°C, and heat indices potentially soaring to around 46°C. • Why it matters: The National Weather Service has warned that this prolonged heatwave poses severe health risks, particularly during the Fourth of July holiday weekend, as residents may experience little to no overnight relief from the heat. • What to watch next: Authorities are urging residents to take precautions against heat-related illnesses, and updates from the National Weather Service and health agencies will be critical as the situation develops.

**Title: Dangerous Heatwave Set to Intensify Across the Eastern US**

A significant heatwave is forecasted to escalate across the eastern half of the United States this week, coinciding with the Fourth of July holiday weekend. The National Weather Service (NWS) has issued warnings for extreme temperatures, which are expected to range from approximately 32°C to 40°C. When combined with high humidity, local heat indices could soar to around 46°C.

The heatwave is predicted to peak in the Midwest and Mississippi Valley between Tuesday and Thursday, before advancing into the Ohio Valley and East Coast later in the week. The NWS has cautioned that residents will experience "little to no overnight relief," with nighttime temperatures only dropping to the 20°C range.

"This stretch of upcoming record-breaking heat from the Midwest to the East Coast will be particularly dangerous," the NWS emphasized in a statement. The agency highlighted that the combination of soaring daytime highs, extended duration of the heat, and unseasonably warm nighttime lows could lead to severe health risks. Prolonged heatwaves are known to be among the most lethal weather phenomena in the US, as their impacts tend to be less visible and accumulate over time.

This warning comes on the heels of an early-summer heatwave that recently affected parts of Europe. Countries such as France, Spain, and Germany experienced temperatures exceeding 40°C, resulting in increased heat-related emergencies and putting additional pressure on local health services. The World Health Organization (WHO) reported over 1,300 excess deaths linked to high temperatures in Europe from June 21 to June 28.

Dr. Tedros Adhanom Ghebreyesus, the director-general of the WHO, has described heat stress as a "silent killer," noting that many European homes, workplaces, and schools are not equipped to handle such extreme temperatures. In response to the rising health concerns associated with heatwaves, the WHO has announced a partnership with FIFA to safeguard players, staff, and fans during the upcoming 2026 World Cup, which will take place in the US.

The collaboration aims to develop comprehensive action plans, raise awareness about the dangers of extreme heat, establish early warning systems, improve access to safe drinking water, and implement effective cooling strategies. Dr. Ghebreyesus emphasized the importance of smart planning in mitigating the effects of heat on public health.

As the US prepares for this intense heatwave, authorities are urging residents to take precautions to protect themselves from heat-related illnesses. It is essential for individuals to stay hydrated, avoid strenuous outdoor activities during peak heat hours, and seek air-conditioned environments whenever possible.

With the Fourth of July holiday approaching, local officials are particularly concerned about the potential for increased heat-related incidents as people gather for celebrations. The NWS and health agencies are advising the public to remain vigilant and prioritize safety during this extreme weather event.

As the situation develops, updates from the NWS and health authorities will be crucial in guiding residents through this challenging period of extreme heat.

Source: Euronews World
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