The National Weather Service in Shreveport is maintaining a heat advisory for the region through 7 p.m. Monday.
Columbia County is part of the affected area.
A high pressure heat ridge will continue building east into the region through Monday, resulting in afternoon temperatures again climbing into the mid 90s to near 100 degrees.
Southerly winds will maintain the high humidity values this afternoon and again Monday, with resultant heat indices ranging from 105 to 110 degrees. Limited relief from the heat is expected Sunday night, with low temperatures only falling briefly into the mid and upper 70s.
High heat index readings will increase the risk of heat-related illnesses.
Isolated to scattered showers and thunderstorms will be possible through much of the extended period of the forecast with the highest chances across the eastern half of the Four State Region.
Precipitation coverage may pick up by late in the work week due to a disturbance moving in from the north and west.