UPDATE: Extreme heat warning in place for Desert Region until Sunday evening

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An updated extreme heat warning was issued by the NWS Phoenix AZ on Thursday at 1:07 p.m. in effect until Sunday at 8 p.m. The warning is for Joshua Treek, Imperial County Southwest, Salton Sea, Chuckwalla Mountains, Imperial County Southeast, Imperial County West, Imperial Valley, Chiriaco Summit, Palo Verde Valley and Chuckwalla Valley.

"Dangerously hot conditions. Afternoon temperatures of 96 to 109 degrees. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke," can be anticipated according to the NWS. "Afternoon temperatures 96 to 109 expected."

"Heat related illnesses increase significantly during extreme heat events," states the NWS.

This warning is in effect until Sunday at 8 p.m.

Tips from the NWS for staying safe during a heat wave

• Consume plenty of fluids to stay hydrated.
• Stay in an air-conditioned room.
• Check on others: Stay out of the sun, and make sure to check up on relatives and neighbors.
• Ensure child and pet safety: Take every precaution to never leave young children and pets alone in vehicles, especially in extreme heat when car interiors can quickly become hazardous.
• Be mindful outdoors: Take extra precautions when working or spending time outside.
• Optimal Timing: When possible, reschedule strenuous activities to early morning or evening.
• Recognize early indicators: Learn to identify the warning signs of heat exhaustion and heat stroke.
• Stay cool with clothing: Select lightweight and loose-fitting outfits for enhanced comfort.

To ensure safety during outdoor work, adhere to the Occupational Safety and Health Administration (OSHA)'s recommendations by incorporating regular rest breaks in shaded or air-conditioned environments. If someone is affected by heat, immediately transfer them to a cool and shaded area. In an emergency, call 911.

Source: The National Weather Service

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This story was originally published March 16, 2026 at 11:57 AM.