The Environment Ministry has initiated a special alert system on Wednesday to combat the unprecedented heat and protect individuals from heatstroke. This system, which will be in effect until October 23, issues alerts for prefectures when temperatures are forecasted to reach dangerously high levels. These alerts serve as a reminder for the public to prioritize air conditioning and to minimize their time outdoors.
A special alert is issued at approximately 2 p.m. when the heat index, calculated based on temperature and humidity, is expected to exceed 35 at all monitoring points within a prefecture. This system supplements an existing heatstroke alert system, which triggers alerts when the index is forecasted to reach 33 or higher at any monitoring point. Notably, the heat index has never surpassed 35 at any of the approximately 840 monitoring points across Japan.
When a special heatstroke alert is issued, individuals are urged to remain indoors in air-conditioned environments, avoid nonessential outdoor activities, and stay hydrated. Vulnerable populations, such as the elderly, infants, and babies, are given particular attention, with local communities and families encouraged to assist them in staying in cool areas. Municipalities have designated public and private facilities equipped with air conditioning as cooling shelters. These facilities are obligated to serve as temporary shelters for the public when special heatstroke alerts are in effect.
