 The hurricane could cause flooding in Houston and Galveston, forecasters say. The heat wave is busting temperature records in the west. 120 degrees in Las Vegas, a new record. Extreme heat dangerous to crews battling a wildfire in Mariposa County, California. It forced more than 1,000 people to evacuate. Crews are trying to prevent a fire near Santa Barbara from reaching surrounding neighborhoods. ABC's Jacqueline Lee.