Mason and this is our western edition. Good evening. Im Anthony Mason. As summer arrives a Tropical Storm is threatening the gulf coast. And it is dangerously hot in the southwest with excessive heat warnings posted in parts of arizona, nevada, and california. The mercury soared into triple digits for the Third Straight day. In phoenix, it was so hot, more flights had to be canceled. Kris van cleave is there. T reporter unrelenting heat bears down on phoenix as the temperature shoots towards a recordbreaking 120. Fire crews are rushing to handle a surge in heat emergencies. When its over 110, your body cannot cool itself down, setting up the potential for deadly heatstroke. Director of Emergency Management lisa jones. Bu your house stays hot. Buildings stay hot. ,he sidewalk stays hot. So theres no reprieve, basically. In reporter the city opened 47 cooling Centers Across the valley, and about 50 flights had to be canceled at Sky Harbor Airport because it may be too yst to fly. For the