Japan's Weather Agency Warns of Rare High Temperatures Across Many Regions
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Japan's Meteorological Agency has issued an early warning indicating that temperatures across several regions could be significantly higher than average for this time of year, reaching levels typically seen only once every ten years.
According to the agency, this 'once-in-a-decade' heat event is expected to begin around the 19th of the month and affect a wide swath of the country.
The regions named in the forecast include Kanto-Koshin, Tokai, Kinki, the Pacific side of Hokkaido, Tohoku, Hokuriku, and Okinawa, spanning both northern and southern parts of Japan.
This kind of alert, officially termed 'early weather information on high temperatures', is issued by the agency to give the public advance notice of unusually extreme conditions, allowing time for preparation.
Northern Japan is expected to experience a particularly noticeable shift in perceived temperature, meaning residents may feel a sharp change in how hot the weather feels compared to recent conditions.
Meanwhile, western and eastern Japan have been cautioned about the possibility of prolonged late-summer heat, often referred to as 'lingering residual heat', which can persist well beyond the traditional end of summer.
Maps released alongside the forecast reportedly showed large portions of eastern Japan marked in red, a visual indicator commonly used to represent severe or extreme heat warnings.
The agency's advisory is designed to help residents, businesses and local governments take precautionary measures ahead of the expected temperature rise, particularly as extreme heat has increasingly been linked to serious health risks such as heat-related illness in recent years.
While the report does not specify exact temperature figures, it emphasizes that conditions will deviate substantially from seasonal norms, a pattern that has drawn growing public attention amid broader concerns about shifting climate patterns in Japan.
Officials have not detailed the expected duration of the high-temperature period beyond noting that it is likely to begin around the 19th, leaving further specifics to be clarified in subsequent updates from the agency.
Vocabulary6 words
- Meteorological Agency
- a government body responsible for monitoring and forecasting weather
- once-in-a-decade
- describing an event so rare it typically happens only once every ten years
- early weather information
- an advance alert issued before an expected extreme weather event
- perceived temperature
- how hot or cold the air feels to a person, not just the actual number
- lingering residual heat
- hot weather that continues after the usual summer season has ended
- heat-related illness
- sickness caused by the body overheating, such as heatstroke
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Quiz
Answer key
1. A once-in-a-decade level of high temperatures 2. Northern Japan 3. False
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Discussion questions
- What might be the social or economic impact of a once-in-a-decade heat event across multiple regions?
- Why might weather agencies use visual tools, such as colour-coded maps, to communicate extreme forecasts?
- How could prolonged 'lingering heat' after summer affect agriculture, health systems or energy demand?
- In what ways might repeated extreme heat warnings shape public attitudes toward climate change in Japan?
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