The deadliest weather in America is happening in Middle Tennessee right now

NASHVILLE, Tenn. (WSMV) - When people think about dangerous weather, images of tornadoes, hurricanes and flooding often come to mind. But the weather hazard claiming the most lives in the United States is much quieter — and is far more deadly.

Extreme heat is the leading weather-related cause of death in the United States, according to the National Weather Service and U.S. Environmental Protection Agency.

The numbers are eye-opening. On average, around 1,600 people die from extreme heat every year in the United States. The stats from around the world are even more staggering. Nearly half a million people are killed by heat every year globally. Almost half of worldwide heat-related fatalities are reported in Asia, while about 35% of them are in Europe.

Of the worldwide deaths, the elderly accounted for most of them. According to the World Health Organization, heat-related mortality rates among people over 65 years old have increased by approximately 85% in recent years. Older adults, young children, people with chronic medical conditions, outdoor workers and those without reliable air conditioning are among those at greatest risk.

During prolonged heat, especially when humidity is high, sweating becomes less effective. Body temperatures can rise rapidly, increasing the risk of heat exhaustion, heat stroke and potentially fatal complications. Heat can also worsen existing medical conditions, particularly heart and respiratory problems.

With extreme heat becoming more frequent and intense, health officials stress the importance of taking heat warnings seriously, staying hydrated, spending time in air conditioning or other cool locations, and checking on family members and neighbors who may be especially vulnerable.