MISSOURI — The National Weather Service in Pleasant Hill has issued a Heat Advisory to start at 12 p.m. Wednesday, July 28, and to continue through 9 p.m. Thursday, July 29. Heat index values up to 106 degrees are expected in the listening area. It is recommended that individuals drink plenty of fluids, stay in an air-conditioned room, stay out of the sun and check up on relatives and neighbors during this time.