29 Aug 2022 | 07:04 AM UTC
China: Heatwave likely to persist in southern and eastern regions through at least Aug. 31 /update 8
Heatwave likely to persist in southern and eastern regions across China through at least Aug. 31. Utility disruptions possible.
Event
High temperatures are forecast to persist across southern and eastern China through at least Aug. 31. The ongoing heatwave has persisted for more than 70 days. As of early Aug. 29, the China Meteorological Administration has issued a yellow (second lowest level on a four-tier scale) high-temperature warning across central and southern Chongqing, most of Fujian, central and northern Guangdong, most of Guangxi, eastern Guizhou, southeastern Hubei, Hunan, Jiangxi, and central and western Zhejiang provinces; temperatures of 35-39 C (95-102 F) are possible. The highest temperatures of more than 40 C (104 F) are forecast over Hunan and central and southern Jiangxi provinces. Officials could upgrade or expand the alerts over the coming days as conditions change. Forecast models indicate that the high temperatures are likely to ease over Sichuan Province Aug. 29 and over the rest of the affected area Aug. 31. Rainfall forecast over the region through Aug. 30 is likely to aid in reducing temperatures.
Sichuan Province restored most power supplies for industries and businesses, except for those with high energy consumption, Aug. 28 following power cuts. Power supply to all industries is likely to resume after water supply to hydropower stations in the province increase. High temperatures and low rainfall have reduced hydropower generation in the province as energy demand increased due to the increased use of air conditioning. Chongqing Province has ordered factories to suspend operations indefinitely to conserve energy.
Reports indicate multiple wildfires across Chongqing Province over the recent weeks due to the hot and dry conditions. Emergency crews have contained most fires.
Hazardous Conditions
The extended period of oppressive heat and dry conditions may produce ideal circumstances for wildfire growth throughout the region. Heatwaves also threaten 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. In addition to significantly impacting athletes and those who work outdoors, high temperatures can cause problems for people using mass transit. The lack of air conditioning and cramped vehicles during rush hour may lead to some passengers' hospitalization.
Transport and Utilities
Very high temperatures may damage road surfaces, and overheated vehicles may 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, making tire blowouts more common. Major flight disruptions are unlikely at regional airports, but 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 alcoholic beverages, which are dehydrating; drink bottled or boiled water. 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 the case of prolonged electricity outages.
