A sheriff's deputy is doing what sheriff's deputies do: scouring Instagram. He comes upon the account of a man who has pictures of guns and money. These are clues.
A man pulls the emergency cord because he's left his phone on a bench on the station platform. He either leaps or slips from the train and is seriously injured when another train hits him.
If you're looking for an app to monitor storms, you really can't go wrong with any of these. Each one offers something to help you prepare for storms headed your way.