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Heat Safety

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Extreme Heat Warning Covers Imperial Valley as Afternoon Temperatures Reach 106–111°F

The advisory signals a major public-health threat that can cause heat illness and requires local cooling shelters and worker rest measures.

National Weather Service Issues Extreme Heat Warnings for Southwest California and Nearby Arizona

Phoenix Closes High-Risk Trails During Record-Early Extreme Heat Warning

West Coast Heat Wave Triggers Warnings With Portland Under Extreme Alert Through Tuesday

Portland Heat Wave Sets Records as Warnings Extend Into Tuesday

West Coast Under Extreme Heat Watches, Storms Expected to Bring Midweek Relief