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3 hikers died in Utah's extreme heat. Here's why these conditions are so dangerous

A sign for Canyonlands National Park is seen on May 6, 2003, in Moab, Utah.
Mickey Krakowski
/
AP
A sign for Canyonlands National Park is seen on May 6, 2003, in Moab, Utah.

Updated July 16, 2024 at 15:02 PM ET

Three hikers have died amid extreme heat in Utah, adding to a growing number of hiking-related deaths in this scorching hot summer.

The bodies of Albino Herrera Espinoza, 52, and his daughter, Beatriz Herrera, 23, both from Green Bay, Wis., were found in Canyonlands National Park after they texted 911 to report that they were lost and out of water on Friday, according to the San Juan County Sheriff's Office.

On Saturday, two hikers suffering from signs of heat exhaustion in Snow Canyon State Park were taken to the hospital, according to the Santa Clara-Ivins Public Safety Department. A passerby told police about a third person nearby, who was found dead.

A stifling heat wave in the Western U.S. has turned some of its most alluring nature trails deadly. And Utah's recent deaths add to an already tragic toll this summer.

Heat is one of the deadliest weather-related disasters. Human-caused climate change is fueling longer and more intense heat waves, and making dangerously high temperatures more likely.

A child collapsed and later succumbed to the heat after hiking on a Phoenix trail. Three hikers have died at the Grand Canyon in less than a month of record-breaking temperatures. And dramatic video shows the rescue of a couple who ran out of water near California's Joshua Tree National Park and were airlifted from a dry creek bed.

Here's why hiking in extreme heat can be so dangerous and how to keep yourself safe.

The dangers

Heat records have been crumbling this summer in the U.S., creating dangerous conditions for those exerting themselves outside. The U.S. is warming up at a faster rate than the global average. Already this summer Palm Springs, Calif., set an all-time record high of 124, Reno, Nev., saw a record four days of 105-plus heat while parts of Oregon baked through temperatures of 110.

When the body gets overheated, it struggles to perform basic functions.

"It would be similar with somebody having a really bad stomach flu where your body is basically revolting against you," says Phoenix Fire Capt. Rod McDade. "And what happens is, as the body starts to go into a protection mode, it starts shunting everything in to protect the core."

Heatstroke signs include hot, red, dry or damp skin, a fast strong pulse, headache, dizziness, nausea and confusion. Things can get really dangerous when people ignore them.

"The signs and symptoms are there. Their body is telling them, I can't continue, and yet they continue because they don't believe it's a successful hike until they get to the top of the mountain," says McDade. "And that's when we run into problem."

A hiker finishes her hike early to beat high temperatures on July 10, 2023, in Phoenix.
Matt York / AP
/
AP
A hiker finishes her hike early to beat high temperatures on July 10, 2023, in Phoenix.

Be prepared

It really is a dry heat in desert environments, so hydrating before, during and after a hike is essential.

"If your water is half gone, turn around and go back," says Claire Miller, a park supervisor with the city of Phoenix. Dress in light, loose-fitting clothing, says Miller, and you'll also need a hat.

Follow other hiking best practices as well, like bringing a phone, appropriate footwear and a hiking buddy who can check in with you.

"Please have respect for our mountain trails," says McDade, of the Phoenix Fire Department. "As you know, they're deadly and we've already found that out so far this summer."

Also try to time your hike to the coolest part of the day, like first thing in the morning or after the sun sets.

"It's a tough environment out there," says Miller. "And even when you're in good shape ... if you go out at the height of the heat, it's hard for anybody."

Furry friends

If you're hiking with a dog, even more caution is needed. In Phoenix, dogs are banned from trails when temperatures crack the triple-digit mark because they have a harder time shedding heat.

A man and a dog are silhouetted against the sky at sunset as they hike along a ridge at Papago Park in Phoenix on March 2, 2023.
Charlie Riedel / AP
/
AP
A man and a dog are silhouetted against the sky at sunset as they hike along a ridge at Papago Park in Phoenix on March 2, 2023.

Dr. Sandra Faeh of the American Veterinary Medical Association told Morning Edition's Steve Inskeep that it's best to keep animals inside when it's hot out, and brushing out loose fur can help.

Excessive panting, drooling, restlessness, vomiting, diarrhea and even collapsing are all signs the animal is overheating.

Miller, the Phoenix park supervisor, says she's seen firsthand what can happen when a dog suffers from the heat on a trail.

"I've had to help rescue many dead or dying dogs on trails because they'll just be completely faithful and hike with their owner until the end," she says. "It's a tragic situation."

The rescuers

In Phoenix summers, heat-related rescues are common on popular trails.

"We rescued somebody suffering heat exhaustion on Camelback Mountain (Tuesday). We had one the day before. We had one on North Mountain the day before that," says McDade. "We are seeing folks that are unfortunately enjoying these mountain hikes within the city of Phoenix, when really we question you wanting to even do gardening in your backyard."

It can take upwards of 50 people to execute the rescue of a single person, says McDade. And the rescuers may have to haul heavy equipment up steep mountains to reach people.

In the extreme heat, helicopter rescues aren't even possible, because the aircraft can't get the lift they need to fly.

Copyright 2024 NPR

Alina Hartounian
Alina Hartounian is a supervising editor for NPR's NewsHub, an audience focused team of reporters and editors who largely write for NPR.org. While guiding coverage, she has also taken time to write about bicolored lobsters and microchip graffiti.