North Texas July 20, 2017 10:40 am Heat Advisory Goes Into Effect Tuesday Afternoon North Texas will be under a Heat Advisory from 1 p.m. Thursday until 8 p.m. Saturday. The heat index will reach up to 105 each day. Make sure not to overexert yourself with outdoor activities. Wake Up to Something Good 2:28 NBC 5 Forecast: Storm chances continue into Sunday 2:34 NBC 5 Forecast: Storm chances continue into Sunday 4:07 NBC 5 Forecast: Storm chances continue into the weekend 2:33 NBC 5 Forecast: Storm chances continue into the weekend 2:55 NBC 5 Forecast: Storm chances Friday and the weekend