Heat waves – The Watchers

Nuclear power plants shut down in France and Switzerland as heatwave impacts river cooling

Teo Blašković — Thu, 03 Jul 2025 17:18:41 +0000

Nuclear power plants in France and Switzerland were forced to shut down or reduce output between July 1 and 3, 2025, as a major heatwave raised river water temperatures above regulatory cooling thresholds.

Source

Early-summer heatwave claims 8 lives across Europe

Reet Kaur — Thu, 03 Jul 2025 09:47:31 +0000

At least eight people have died across Spain, France, and Italy as an early-summer heatwave swept across Europe in late June and early July 2025, breaking temperature records and prompting red alerts and emergency responses.

Source

Record marine heatwave pushes Mediterranean Sea surface temperatures to 30°C (86°F) off Spain

Reet Kaur — Wed, 02 Jul 2025 21:55:00 +0000

Sea surface temperatures in the western Mediterranean Sea reached up to 30 °C (86 °F) in early July 2025, with anomalies of 5--6 °C (9--10.8 °F) above average under strong to severe marine heatwave conditions.

Source

France shuts 1 350 schools, Italy limits work as severe heatwave grips southern Europe

Reet Kaur — Wed, 02 Jul 2025 10:17:27 +0000

Temperatures above 40 °C (104 °F) led to the closure of over 1 350 schools in France and work restrictions across 13 Italian regions between June 30 and July 2, 2025, as a persistent heat dome caused red-level alerts and severe public health risks across southern Europe.

Source

Japan endures hottest June on record

Reet Kaur — Tue, 01 Jul 2025 17:51:00 +0000

Japan recorded its hottest June since records began in 1898, with average temperatures 2.34°C (4.21°F) above normal and over 200 locations registering highs of 35°C (95°F) or more, the Japan Meteorological Agency reported on June 30, 2025.

Source

Prolonged heat wave causes two deaths in Texas and Missouri, United States

Harsh Vardhan — Fri, 27 Jun 2025 11:10:55 +0000

Two heat-related deaths were reported in Texas and Missouri between June 21 and 23, 2025, as a prolonged and intense heat wave driven by a persistent heat dome engulfed large parts of the central and eastern United States. Extreme heat will linger in the Ohio Valley through Friday, then we will finally see some relief from the heat this weekend.

Source

Record-breaking heatwave continues across Northeast U.S.

Harsh Vardhan — Tue, 24 Jun 2025 11:41:53 +0000

A heat dome settled over the United States beginning June 23, 2025, driving record-breaking temperatures across the Northeast and Mid-Atlantic. More than 245 million people experienced daytime highs above 32 °C (90 °F), with 33 million facing extreme heat above 38 °C (100 °F) by June 24. Cities like New York and Philadelphia saw historic highs and record-warm nights, leading to heat advisories and health warnings across 2/3rd of the US states.

Source

Record-breaking heat grips central and eastern U.S. as heat dome intensifies

Harsh Vardhan — Mon, 23 Jun 2025 15:31:32 +0000

A heat dome that formed over the central and eastern United States on June 20, 2025, has triggered record-breaking temperatures and extreme heat warnings across several states. Daily highs are forecast to exceed 38°C (100°F) in multiple major cities through June 24.

Source

Extreme heat alerts issued for central, eastern U.S. as heat dome builds June 20 onwards

Harsh Vardhan — Fri, 20 Jun 2025 10:15:38 +0000

A large heat dome is forecast to generate temperatures exceeding 38 °C (100 °F) across much of the central and eastern United States starting June 20, 2025, with high humidity compounding heat risks for over 200 million people.

Source

Heatwave kills four in Japan, alerts in place for the coming days

Harsh Vardhan — Thu, 19 Jun 2025 19:45:00 +0000

At least four elderly women died of suspected heatstroke on June 17, 2025, in Japan's Kanagawa, Shizuoka, Saitama, and Gunma Prefectures. More than 60 monitoring stations recorded temperatures at or above 35 °C (95°F). Temperatures are expected to rise until June 20, and a heat advisory is in place.

Source