Weather ❯ Extreme Weather ❯ Heat Waves

Heat Advisories

Health Risks National Weather Service Regional Impacts Record Temperatures Safety Precautions Humidity Safety Recommendations Power Outages Heat Warnings Southern California Public Safety Recommendations Southwestern United States Impact on Communities Santa Ana Winds Texas Impact on Health Public Safety

Power Shutoffs and Firefighting Surge as Santa Ana Winds Drive Red Flag Conditions in Southern California

Forecasters say recent rain did little to moisten fuels.

Heat Index Over 105°F Triggers Warnings as Agencies Issue New Prevention, First-Aid Protocols