 But you don't have to visit the desert to be exposed to the extreme heat. In Multnomah County, Oregon, Dr. Richard Bruno of the County Health Department says they're investigating at least four deaths that are suspected to have been caused by the heat. I'm Donna Water. Meanwhile, many of the millions left without power when Hurricane Beryl crashed in the Houston area. Now they stay without power and air conditioning as dangerous heat threatens that region. A heat advisory in effect through Wednesday in parts of Texas.