Arizona, California Severe Extreme Heat Warning | Effective 07/08/2026 22:56

Headline: 
Extreme Heat Warning issued July 8 at 10:56PM MST until July 10 at 8:00PM MST by NWS Phoenix AZ
Event: 
Extreme Heat Warning
Urgency: 
Expected
Effective: 
July 8, 2026 - 10:56pm
Expires: 
July 9, 2026 - 2:00pm
Description: 
* WHAT...Dangerously hot conditions. Afternoon temperatures 111 to 116 expected. Major Heat Risk. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * WHERE...In Arizona, Parker Valley. In California, Chuckwalla Valley, Imperial County Southwest, Imperial County West, Imperial Valley, and Palo Verde Valley. * WHEN...Until 8 PM MST /8 PM PDT/ Friday. * IMPACTS...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.
Instruction: 
An Extreme Heat Warning means that a period of very hot temperatures, even by local standards, will occur. Actions should be taken to lessen the impact of the extreme heat. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose-fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Public cooling shelters are available in some areas. Consult county officials for more details.
Area Description: 
Parker Valley; Imperial County Southwest; Imperial County West; Imperial Valley; Palo Verde Valley; Chuckwalla Valley
Forcast Office: 
NWS Phoenix AZ