Extreme heat warning affecting Southern California until Friday evening

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At 11:30 p.m. on Thursday, the NWS Phoenix AZ released an extreme heat warning in effect until Friday at 8 p.m. The warning is for Imperial County Southwest, Imperial County West, Imperial Valley, Palo Verde Valley and Chuckwalla Valley.

The NWS informs, "Dangerously hot conditions. Afternoon temperatures of 111 to 115 degrees. Major Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke."

"Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke," explains the NWS.

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

Tips from the NWS for staying safe during a heat wave

• Stay hydrated: Drink plenty of fluids.
• Seek shelter: Stay indoors in an air-conditioned room to keep cool.
• Stay out of the sun, and check up on relatives and neighbors.
• Child and pet welfare: Never forget to safeguard young children and pets by not leaving them unattended in vehicles, especially during scorching weather when car interiors can become life-threateningly hot.
• Be mindful outdoors: Take extra precautions when working or spending time outside.
• Select the ideal time: If possible, move strenuous activities to early morning or evening for more favorable conditions.
• Familiarize yourself with warning signs: Know the symptoms of heat exhaustion and heat stroke.
• Dress comfortably: Wear lightweight and loose-fitting clothing.

For a safer outdoor work environment, follow the Occupational Safety and Health Administration (OSHA)'s guidance by scheduling regular rest breaks in shaded or air-conditioned places. If anyone shows signs of heat illness, promptly move them to a cool, shaded area. In an emergency, call 911.

Source: The National Weather Service

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This story was originally published July 9, 2026 at 11:33 PM.