28 Jun 2022 | 07:49 AM UTC
Japan: Heatwave to impact southern and central Japan through at least July 3
Heatwave to impact southern and central Japan through at least July 3. Transport, utility disruptions possible.
Event
Forecast models indicate that a heatwave will persist across portions of southern and central Japan through at least July 3. As of June 28, authorities have issued heat stroke alerts for Amami, Ehime, Fukui, Kagoshima, Kumamoto, Nagasaki, Oita, Okinawa, Shimane, Tokushima, and Yamanashi prefectures. Temperatures are forecast to remain high through at least July 3. Authorities may issue advisories as weather conditions change over the coming days.
Officials have stated that the rainy season has ended significantly earlier than normal, resulting in high temperatures across southern and central Japan, especially in southern Kyushu as well as Kanto, Koshin, and Tokai regions. Authorities are urging residents in the Kanto Region, Yamanashi Prefecture, and eastern Shizuoka Prefecture to save electricity to prevent power outages. More than 250 people in Isesaki City, Gunma Prefecture, were hospitalized June 26 due to heatstroke.
Hazardous Conditions
The extended period of oppressive heat and dry conditions may produce ideal circumstances for wildfire growth throughout the region. Heatwaves also pose a threat to vulnerable groups - such as the elderly, children, pregnant women, and those with respiratory illnesses - due to the increased possibility of heat stroke or heat exhaustion during prolonged exposure to high temperatures. These health risks could also extend to relatively healthy individuals during significant heatwave events. The heatwave may make it more difficult for individuals to cool off in areas under restrictions due to coronavirus disease (COVID-19) activity.
Transport and Utilities
Very high temperatures could warp rail tracks and force passenger and freight trains to operate at reduced speeds. Damage to road surfaces is also possible, and overheated vehicles could worsen traffic problems in urban areas where congestion is already a problem. Commercial trucking disruptions might occur, as very high temperatures put more stress on engines and make tire blowouts more common. Major flight disruptions are unlikely at regional airports; however, general aviation disruptions are possible, and some airfreight carriers could reduce cargo loads. High temperatures could lead to an increased demand for electricity, which might trigger localized brownouts or blackouts, exacerbating hazardous conditions when air conditioning is no longer possible.
Advice
Monitor local media for weather updates and related advisories. During heatwaves, remain indoors in air conditioning when possible. If outdoor activities are necessary, frequently rest in shaded areas; avoid activity during the hottest times of the day. Stay well-hydrated by drinking plenty of fluids. Avoid caffeinated and alcoholic beverages, which are dehydrating. Wear loose-fitting, light-colored clothing. Cotton fabrics are more cooling than synthetics. Promptly seek medical attention if signs of heat exhaustion or heat stroke develop. Charge battery-powered devices in case prolonged electricity outages occur.
