 barrel could spawn tornadoes, forecasters say. In the west, extreme heat continues. 120 degrees, a new record in Las Vegas today. The heat, a dangerous burden on firefighters. ABC's Jacqueline Lee. The French fire in Mariposa County that forced more than 1,000 people to evacuate, that is now 60% contained. This heat wave here in California, unrelenting. These triple-digit temperatures breaking records in places like Redding as well as Palmdale. This is a very dangerous time of year and officials are warning.