A Heat Advisory is in effect from 1 p.m. Wednesday until 8 p.m. Thursday. 

Heat indices are expected to rise into the 105 to 110 degree range Wednesday afternoon.

A heat advisory means that a period of hot temperatures is expected. The combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are possible.

Affected areas include Canadian, Carter, Cleveland, Garfield, Garvin, Grady, Grant, Jefferson, Johnson, Kay, Kingfisher, Lincoln, Logan, Love, Marshall, McClain, Murray, Noble, Oklahoma, Payne, Pontotoc, Pottawatomie, Seminole and Stephens counties.

People are advised to take extra precautions if they 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. Drink plenty of water.

To reduce the 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 911.