A 14-year-old boy and his stepfather have died in Texas after they went on a hike in excessive warmth the place temperatures reached 48.3C (119F).

The unnamed teenager misplaced his life after he fell sick and have become unconscious within the scorching circumstances, whereas the 31-year-old man died in a automobile crash as he tried to get assist.

The tragedy occurred on the Marufo Vega Trail in Big Bend National Park the place the pair have been mountaineering together with the boy's 21-year-old brother.

In an try and get help after the 14-year-old grew to become unwell, the stepfather left the scene and went again to his automobile whereas the older brother tried to hold his sibling on his again to the place the path started.

Authorities have been first advised in regards to the emergency at 6pm on Friday.

A staff of park rangers and US border patrol brokers then reached the scene at 7.30pm and located the boy lifeless.

Half an hour later, the authorities in Texas found the automobile which had crashed over an embankment at Boquillas Overlook.

The stepfather, from Florida, was declared lifeless on the scene, whereas the older brother was unharmed within the tragedy.

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'Strenuous path harmful to aim'

The nationwide park service has warned the Marufo Vega Trail was "dangerous" in the course of the warmth and suggested guests to keep away from mountaineering alongside the path within the afternoon.

It mentioned: "The Marufo Vega Trail winds through extremely rugged desert and rocky cliffs within the hottest part of Big Bend National Park.

"No shade or water makes this strenuous path harmful to aim within the warmth of summer season."

A climate warning has been issued for hikers by the park service as temperatures soar.

It mentioned: "Temperatures reach over 110+ every day along the Rio Grande and throughout the desert areas of Big Bend.

"These are extraordinarily harmful/lethal temperatures! Hikers ought to be off trails within the afternoon. Stay hydrated. Limit your publicity."

The causes of their deaths weren't instantly identified.