WEATHER REPORT
California hiker family's mystery deaths 'due to heat': sheriff
by AFP Staff Writers
Los Angeles (AFP) Oct 21, 2021

The mysterious deaths of a family and their dog on a California hiking trail that baffled investigators for weeks was down to excessive heat, the local sheriff said Thursday.

The bodies of Briton John Gerrish, 45, his wife Ellen Chung, 31, and their one-year-old daughter, Miju, were discovered a short way from a trailhead in the Sierra National Forest. Their pet dog was nearby, also dead.

Multiple theories about the cause of their deaths were floated, including exposure to toxic gases from an abandoned mine, or drinking water contaminated by poisonous algae.

But Mariposa Sheriff Jeremy Briese told a press conference Thursday the family had been affected by temperatures over 100 Fahrenheit (38C), giving the cause of death as "hyperthermia and probable dehydration due to environmental exposure".

Hyperthermia is an abnormally high body temperature caused by a failure of heat-regulating mechanisms to deal with environmental heat, the National Institutes of Health says. Heat exhaustion and heat stroke are well-known examples.

Briese said the family, who were relatively new to the area, were found on August 17 -- two days after they were last seen -- without any supplies of water.

"The initial hike started off at 75 degrees," he said.

"By the time they got down... before they hit the trail, it's already jumped to 103."

Temperatures in parts of California during the summer routinely top 90 or 100 Fahrenheit, but Briese said heat-related deaths were not common in Mariposa.


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WEATHER REPORT
Urban heat exposure has increased 3-fold globally since 1980s, study finds
Washington DC (UPI) Oct 4, 2021
The number of days during which city residents worldwide are exposed to extreme heat and humidity has tripled since the 1980s, a study published Monday by the Proceedings of the National Academy of Sciences found. The growing number of days with extreme heat and humidity in urban areas now affects nearly one-quarter of the global population and is the combined result of both rising temperatures and booming urban population growth, the researchers said. The number of person-days - or the ... read more

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