Al Roker was overwhelmed with well-wishes on Wednesday after a video he shared sparked concern.The Today show weatherman found himself in some frightening conditions while in Tokyo where he is providing coverage of the Olympics. MORE: Al Roker's wife Deborah Roberts shares heartwarming message to husband following worrying journey Al took to Instagram to share footage of an unbelievable thunder and lightning storm passing over the city and explained: "We're under a severe thunderstorm advisory