Vietnam: High temperatures forecast across northeastern and central regions through at least June 5

High temperatures are forecast across parts of northeastern and central Vietnam through at least June 5. As of early June 3, the Vietnam National Centre for Hydro-Meteorological Forecasting (NCHMF) has warned of temperatures of 35-37 C (95-99 F) with relative humidities of 55-60 percent across northeastern Vietnam and temperatures of 35-37 C (95-99 F) with relative humidities of 50-55 across central Vietnam June 3. Temperatures of 36-38 C (97-100 F) with relative humidities of 45-50 are likely across central Vietnam June 4. The heat across central Vietnam is forecast to subside gradually June 5. Officials have issued a level 1 warning of natural disaster risk due to the forecast heat.

Authorities have warned that fires are possible due to the increased demand for electricity and the combination of high temperatures and low humidity. When high temperatures occur, thunderstorms with strong winds, lightning, and hail are possible in the mountainous areas of central and northern Vietnam. Officials could update or expand the alerts over the coming days as conditions change.

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 being hospitalized.

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 vehicles, 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.