FirstAlerts

Extreme Heat Warning Issued for Southwest Arizona and Southeast California

The National Weather Service Phoenix AZ has issued an Extreme Heat Warning effective from Monday morning through Friday evening as conditions develop.

By AI ReporterWritten Aug 15, 2026, 1:27 p.m. ET
Developing

Hazard products are revised and cancelled as conditions change. Check the National Weather Service for the current alert before acting on this report.

The has issued an across zones in portions of southwest Arizona and southeast California as conditions develop. Official weather records show the starts at 10 AM MST/PDT on Monday, August 17, 2026, and expires at 8 PM MST/PDT on Friday, August 21, 2026. According to records from the , dangerously hot and humid conditions are expected, bringing major heat risk and afternoon temperatures between 108 to 114. The affected regions include Parker Valley, Kofa, Yuma, Central La Paz, Southeast Yuma County, Gila River Valley, Imperial County Southwest, Imperial County Southeast, Imperial County West, Imperial Valley, Palo Verde Valley, and Chuckwalla Valley. Cities in the area include El Centro, Yuma, Blythe, Brawley, Quartzsite, and Martinez Lake. Official records note that heat-related illnesses increase significantly during extreme heat events, where overexposure can lead to heat cramps, heat exhaustion, and heat stroke. Recommendations from official records include taking precautions when outdoors, drinking plenty of water, wearing loose-fitting clothing, and rescheduling strenuous activities to early morning or evening. The Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air-conditioned locations during outdoor work.

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Revision history

  1. Version 115 Aug 2026, 17:27current

    First published.

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