The main purpose of this ongoing blog will be to track planetary extreme, or record temperatures related to climate change. Any reports I see of ETs will be listed below the main topic of the day. I’ll refer to extreme or record temperatures as ETs (not extraterrestrials).😉
Main Topic: Historic Heatwave Continues Across Japan and the Koreas
Dear Diary. The United States is in between major heatwaves. That doesn’t mean that all excess heat has relented across the Northern Hemisphere. Japan and the Koreas are stuck under a heat done that is hardly moving and won’t dissipate. Unlike its June 2025 American counterpart, the eastern Asian heat dine has and will last more than a week.
Here is the current 500 millibar pattern over Asia:
By the end of this week that heat dome is pretty much over the same place:
Here are some of the latest east Asian record temperature notes from Maximiliano Hererra:
Here are more details from the Straits Times:
‘Once-in-a-decade’ heatwave grips Japan, alerts issued after Tokyo breaches safe limits
Malay Mail
TOKYO, July 6 — Japan is sweltering under an intense heatwave, with temperatures hitting the high 30s across much of the country today, prompting authorities to issue heatstroke alerts in 19 prefectures — including the first warnings this year for central Tokyo and neighbouring Kanagawa.
According to the Japan Meteorological Agency, the current heatwave is expected to persist until mid-July, marking a rare occurrence “seen only once in a decade.”
The agency attributes the extreme weather to climate change and a stronger-than-usual Pacific high-pressure system that has brought an unusually early end to the rainy season in western Japan.
The Japan Times reported today that temperatures climbed to 38.3C in Kuwana, Mie Prefecture, 37.9C in Toyota, Aichi Prefecture, and 37.7C in several cities including Tajimi in Gifu, Hamamatsu in Shizuoka, and Kofu in Yamanashi.
The Japan Sport Association advises cancelling outdoor sporting events if the heat index — which factors in temperature, humidity and solar radiation — exceeds 31.
In Tokyo, the index reached 32.2C by 11am, prompting the Japan Association of Athletics Federations to reschedule events during its three-day national championships at the Japan National Stadium in Shinjuku. Today’s adjustments followed similar delays on Friday and Saturday.
The early heat has been exacerbated by the premature conclusion of the rainy season in regions such as Chugoku, Shikoku, Kinki, and northern Kyushu, where the season ended nearly 20 days ahead of schedule — the earliest on record.
June was Japan’s hottest ever, with average temperatures 2.34C above the historical norm, the Meteorological Agency said. The trend is in line with rising global temperatures, as the agency warned that climate patterns are shifting due to global warming and changing wind systems.
Authorities are urging residents to take precautions against heatstroke, including staying hydrated, avoiding outdoor activity during peak hours, and seeking cooler indoor environments.
Here are more “ET’s” recorded from around the planet the last couple of days, their consequences, and some extreme temperature outlooks, as well as any extreme precipitation reports:
Here is More Climate News from Sunday:
(As usual, this will be a fluid post in which more information gets added during the day as it crosses my radar, crediting all who have put it on-line. Items will be archived on this site for posterity. In most instances click on the pictures of each tweet to see each article. The most noteworthy items will be listed first.)