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What’s causing the US heatwave right now?
A large-scale heat dome is trapping hot air over many parts of the US, leading to record-breaking temperatures. This high-pressure system prevents the heat from escaping, causing prolonged periods of extreme heat across multiple states.
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How is climate change making this heatwave worse?
Climate change has increased the likelihood and intensity of such heatwaves. Experts say that human activities, especially burning fossil fuels, have made these extreme temperatures 800 times more likely, according to a report by World Weather Attribution.
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Which regions are most affected by the heatwave?
States in the southwest, including Arizona and parts of California, are experiencing some of the highest temperatures, with some areas hitting 112°F. The heat is also affecting other large parts of the US, with prolonged high temperatures in cities like Flagstaff, Arizona.
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How long will this heatwave last?
The heat is expected to persist into early April, with some locations experiencing 11 or 12 days of record-breaking temperatures. The atmospheric patterns driving this event are likely to continue for the next few weeks.
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What are the potential impacts of this heatwave?
Extreme heat can lead to health risks like heatstroke and dehydration, strain power grids, and worsen drought conditions. It also signals a shift in weather patterns that could mean more frequent and intense heat events in the future.