Extreme heat Hazard level: Low ?

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 (Southern) extreme heat hazard is classified as low based on modeled heat information currently available to this tool. This means that there is approximately 1% chance per year that at least one period of prolonged exposure to extreme heat, resulting in heat stress, will occur (about 5% chance in the next five years). Risk studies, project planning decisions, project design, and construction methods should seek further information on whether the level of extreme heat hazard needs to be taken into account in the lifetime of the project.

According to the most recent assessment report of the Intergovernmental panel on Climate Change (IPCC, 2013), continued emissions of greenhouse gases will cause further warming, and it is virtually certain that there will be more frequent hot temperature extremes over most land areas during the next fifty years. Warming will not be regionally uniform. In the area you have selected, the temperature increase in the next fifty years will be slightly higher than the worldwide average. It would be prudent to design projects in this area to be robust to global warming in the long-term.

For hazard management recommendations, see documentation.