Bolivia, Peru: High temperatures forecast to persist across much of both countries through at least Sept. 27

Forecast models indicate that high temperatures will persist across much of Bolivia and Peru through at least Sept. 27. The persistent heat will likely exacerbate wildfire activity that has been occurring in the region in recent weeks. The National Meteorology and Hydrology Service (SENAMHI) of Bolivia has issued an orange warning (the middle level on a three-tier scale) for high temperatures across most of Santa Cruz and parts of southern Beni, eastern Chuquisaca, northeastern Cochabamba, northern La Paz, and eastern Tarija departments. Maximum temperatures of 36-41 C (97-106 F) are expected in the affected regions. The National Meteorology and Hydrology Service (SENAMHI) of Peru has issued orange and yellow high-temperature warnings across much of the eastern rainforest region and central mountain region. Temperatures of more than 37 C (99 F) are possible in eastern areas and up to 32 C (90 F) in mountainous areas.

The high temperatures may result in increased energy and water demand and a heightened risk of heat-related illnesses, such as heat exhaustion and heat stroke.

The extended period of oppressive heat and dry conditions may produce ideal circumstances for wildfire growth throughout the affected areas. 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. 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 for dehydration.

Very high temperatures may warp rail tracks and force passenger and freight trains to operate at reduced speeds. Road surface damage is also possible, 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.