how you can pull off the olsen twins' signature style.s we say good morning, america. >> it's saturday morning. this is "gma." >>> good morning, america. love it. i want to rock right now. i'm rob base and i came to get down. >> oh, man. wow, weekend whit in the building. >> second hour love that. good morning, everyone. great to have you with us. we have a lot of news to get to we're following on this saturday morning. we begin with the tropical storm mornings as more than 10 million americans are under flood alerts. >> drought-stricken areas bracing for downpours. monsoon rains are going to slam the southwest. >> let's go back to cheryl scott from wls tracking it all for us. >> the monsoon rains are not letting up, into the day and tomorrow. feeding the moisture across the deep south. you can see the heavy rain coming down. this is a familiar scene that will continue to happen over the next 48 hours. that video from arizona where the water just turning those roadways into rivers. and notice what happens. here's a school bus that was bas