At 11:52 p.m. on Saturday, the National Weather Service issued an updated heat advisory valid for Sunday between 11 a.m. and 9 p.m. for Marion, Lamar, Fayette, Winston, Walker, Blount, Etowah, Calhoun, Pickens, Tuscaloosa, Jefferson, Shelby, St. Clair, Talladega, Sumter, Greene, Hale, Perry, Bibb, Chilton, Coosa, Tallapoosa, Marengo, Dallas, Autauga, Lowndes, Elmore, Montgomery, Macon, Bullock and Pike counties.

The weather service states, “Heat index values up to 105 degrees expected.”

“Hot temperatures and high humidity may cause heat illnesses,” states the weather service.

Heat safety: A guide to staying safe in high temperatures

• Stay hydrated: Drink plenty of fluids.
• Seek shelter: Opt for an air-conditioned room to stay comfortable.
• Avoid sun exposure: Avoid direct sun exposure, protect yourself and check on vulnerable relatives and neighbors.
• Child and pet safety: Take every precaution to never leave young children and pets alone in vehicles, especially in extreme heat when car interiors can quickly become hazardous.
• Caution outdoors: If you work or spend time outside, be sure to take additional safety measures.
• Select the ideal time: Consider rescheduling strenuous activities to early morning or evening if possible.
• Recognize heat-related issues: Recognize the warning signs and familiarize yourself with symptoms of heat exhaustion and heat stroke.
• Dress for comfort: Wear lightweight, loose-fitting clothing to help your body stay cool.

Additional tips for outdoor workers:

• For outdoor workers, the Occupational Safety and Health Administration (OSHA) recommends regular rest breaks in shaded or air-conditioned areas.
• If someone succumbs to the heat, promptly relocate them to a cool, shaded location.
• In emergencies, call 911 for immediate assistance.

These NWS heat safety directives are essential for safeguarding your well-being when facing high temperatures. Stay well-informed and take the necessary precautions to shield yourself and others from the potential hazards of extreme heat.

Advance Local Weather Alerts is a service provided by United Robots, which uses machine learning to compile the latest data from the National Weather Service.