Overview

• A powerful Pacific high-pressure system dominated on August 3, blanketing nearly the entire archipelago with clear skies and extreme heat.
• At 2 p.m., 820 of 914 meteorological stations recorded temperatures of at least 30 °C, classifying them as true summer days.
• By 4 p.m., 318 sites logged midsummer days of 35 °C or above, surpassing counts from the previous four days.
• Nine locations, including Anabuki in Mima City at 39.3 °C and Ebina City at 38.9 °C, set all-time temperature highs.
• Authorities have issued heatstroke warnings and crop-management advisories as the heatwave is expected to last through August 6.