04 Oct 2022 | 11:19 AM UTC
Botswana: Heatwave forecast nationwide through at least Oct. 12
Heatwave forecast across Botswana through at least Oct. 12. Localized transport and utility disruptions possible; health concerns likely.
Event
Forecast models indicate that a high pressure system will lead to heatwave conditions persisting across much of Botswana through at least Oct. 12. 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 36-41 C (97-106 F) are forecast across many parts of the country Oct. 4-7. Temperatures are expected to drop slightly to 36-37 C (97-99 F) over Kgalagadi, Ghanzi, Ngamiland, and Chobe districts and 33-35 C (91-95 F) over Southern, South-East, Kgatleng, North-East, and Central districts Oct. 8-12. 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.
Health
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.
Transport and Utilities
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.
Advice
Monitor local media for weather updates and related advisories. Consider remaining indoors in air conditioning when possible, particularly if operating in one of the worst-affected regions. 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.
