Grand Canyon Heat Watch

National Weather Service warned of extreme heat from midday Monday through Tuesday after three heat-related hiker deaths.

1. Frame 1National Park Service warns Grand Canyon visitors of a public safety risk after three June heat deaths.
2. Frame 2The watch runs midday Monday through Tuesday, when Phantom Ranch could reach or exceed 110°F.
3. Frame 3Park officials strongly advise hikers to avoid inner-canyon trails during the middle of the day.
4. Frame 4Two hikers, ages 67 and 68, were found June 16 on the North Kaibab Trail.
5. Frame 5A third hiker, 72, died June 12 along South Kaibab Trail after becoming ill from heat.
6. Frame 6The immediate decision is whether visitors postpone midday hikes while the watch stays in effect.