A Weather Impact Alert is in effect Thursday as Tropical Storm Bertha moves toward the upper Texas coast, bringing the threat of tropical-storm-force winds along the coastline, scattered downpours and hazardous beach conditions.

While peak daytime temperatures could be between 99 and 104 degrees, humidity-driven heat index values could soar to 115 or 116 degrees.

Houston officials are urging residents to take precautions during a heat advisory, with 112 cooling centers open and free transportation available through 311.