Excessive heat warnings issued across Arizona; hiking down into Grand Canyon not recommended
The National Weather Service has issued excessive heat warnings for Maricopa, Pima and Coconino counties. All of the warnings run through 8 p.m. June 7.
The weather service was predicting dangerously hot conditions across the state through Friday evening.
Afternoon temperatures could range from 102 to 115 degrees in different parts of the state.
The weather service was predicting daytime temperatures ranging from 106 degrees at Havasupai Gardens to 111 degrees at Phantom Ranch at the Grand Canyon. Hiking in the lower elevations of the Grand Canyon would be dangerous and was not recommended, the weather service said.
Too hot: Camelback Mountain and Piestewa Peak closed this week due to excessive heat warning
Overexposure to high temperatures can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke, the weather service warned, adding that most people will be at risk for heat-related illnesses without effective cooling or adequate hydration, especially with prolonged outdoor exposure. The weather service said people working or participating in outdoor activities were at particular risk of heat-related illnesses from extreme heat.
For the latest watches and warnings, see The Arizona Republic's weather alert page.
Climate data from the federal government shows the Southwest has grown significantly hotter during the past decade. The region has endured the most pronounced warming in the country during that period, an increase that federal meteorologists said clearly reflects the influence of global warming.
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In Phoenix and surrounding areas, developed areas have grown significantly hotter than the surrounding desert through the urban “heat-island” effect, in which exposed asphalt, concrete and roofs soak up heat from the sun and push temperatures higher.
In the know: What is the difference between heat stroke, heat exhaustion and dehydration?
Hot weather tips
The Arizona Department of Health Services has tips to prevent heat-related illness:
Drink water: Drink at least 2 liters of water per day if staying inside all day. Those who spend time outdoors should drink 1 to 2 liters per hour they are outside.
Dress for the heat: Wear lightweight and light-colored clothing. Sunscreen should always be applied to exposed skin. Wear a hat or use an umbrella when outdoors.
Eat small meals and eat more often: Avoid foods high in protein that increase metabolic heat.
Monitor those at risk: Check on friends, family or others for signs of heat exhaustion or heat stroke.
Slow down: Do strenuous activity only during the coolest hours of the day, between 4 and 7 a.m.
Stay indoors.
Take breaks: Take a break in a cool place when doing physical activity outside on a hot day.
This article was generated by The Arizona Republic and USA TODAY Network using data released by the National Weather Service. It was edited by a staff member.
This article originally appeared on Arizona Republic: Heat warnings issued across AZ; Grand Canyon hiking not recommended