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Story summary
- A historic heat wave grips Arizona as Phoenix records 102°F on March 18, 2025.
- The heat should reach 106°F by March 20–21, 2025, under a high-pressure system.
- The National Weather Service has issued extreme heat warnings urging residents and visitors to take precautions.
- Camelback Mountain and other trails are closed during peak heat hours after rescues.
- Experts warn this could trigger early snowmelt, reducing water supplies and raising wildfire risk.
