Botswana: Heatwave forecast nationwide through at least Dec. 6

Forecast models indicate that a high-pressure system and a hot northerly air mass will lead to heatwave conditions persisting across much of Botswana through at least Dec. 6. Botswana's Department of Meteorological Services (DMS) has issued a nationwide heatwave warning advising of a significant increase in temperatures across the country. Temperatures of 37-42 C (99-108 F) are forecast across the country over the coming days. Cloudy conditions from Dec. 7 will bring a drop in temperatures across most parts of the country, as well as isolated thunderstorms. The department has advised the public to take precautionary measures due to the severe weather conditions, including drinking more water, avoiding prolonged exposure to the sun, and wearing appropriate attire. Authorities will likely issue new alerts or update/rescind existing advisories as weather conditions change over the coming days. The extended period of very high temperatures and dry conditions may magnify the potential for wildfires throughout the region.

Heatwaves pose a health 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 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.

Overheated vehicles could prompt traffic disruptions in urban areas where congestion is already a problem. Commercial trucking disruptions might occur, as very high temperatures put more stress on vehicles and make 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.