California declaring state of emergency as it braces for more extreme weather after heavy rainfall that left major flooding, mudslides, and power outages. Also, Investigators are working to get a clearer picture of the suspect who is accused of killing four college students in Idaho. Plus, Savannah Guthrie has a one-on-one with legendary Tom Hanks to talk about his role in the new movie “A Man Called Otto.” And, a popular new app called “Gas” has grown In popularity amongst teenagers as its mission is to  boost their self-esteem and spread positivity.