welcome back to all of you watching us here in the united states, canada, skpand around t world. i m kim brunhuber. this is cnn newsroom. we re returning to our top story. the major earthquake in southern alaska. the united states geological survey says a 7.2 magnitude quake struck a short time ago. the national oceanic and atmospheric administration says that a tsunami advisory is now in place in southern alaska and the alaskan peninsula. so far, we haven t received reports of injuries or damage. we ll bring you more on the story as we get it. more than 80 million people are under heat alerts in the u.s. right now and the weeks-long heat wave that s blanketed the southwest is only set to get more intense. if you re in the south, tw temperatures are going to be on the rise this week. death valley, california, hit a staggering 29 degrees on saturday. tourists were still visiting the national park, despite the conditions, hoping to be part of the record-breaking weekend. listen to th