Extreme heat occurs when air temperatures significantly exceed normal seasonal averages for prolonged periods, creating conditions that stress human thermoregulation and can lead to heat-related illness. The hazard is measured using indices that combine temperature and humidity to assess heat stress on the human body, such as wet bulb globe temperature (WBGT). The severity depends on temperature intensity, duration, humidity levels, nighttime cooling, and the vulnerability of exposed populations.
In the area you have selected (Maseru) extreme heat hazard is classified as very low based on modeled heat information currently available to this tool. This means that there is less than 1% chance per year that at least one period of prolonged exposure to extreme heat, resulting in heat stress, will occur (less than 5% chance in the next five years). Based on this information, extreme heat does not need to be explicitly considered for your project. Although the hazard is considered to be very low or non-existent in the project location based on the information available in ThinkHazard!, local or additional information may suggest that there is extreme heat hazard. In that case, seek expert guidance on additional recommended actions.
For hazard management recommendations, see documentation.
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