Isaac has weakened to a tropical storm, with sustained winds at 70 mph or less. Hundreds of thousands are without power in Louisiana, Alabama and Mississippi, and many areas are under flash flood warnings and watches. Yahoo News will be tracking the storm's progress in the player below. Join the conversation by letting us know what you're seeing. We'll also be pulling in tweets from forecasters, storm chasers and first responders.
- Natural Phenomena
- flash flood warnings