Hurricane Irene made landfall in North Carolina this morning and is moving up the east coast. The storm is among the largest to hit the coast in decades.To track the storm, you can use the National Weather Service or check reports from the ground on social media. The New York Times hasa state-by-state guide to social media storm updates.As of 5:00 Saturday, an estimated four people are dead, hundreds of thousands of people are without power and more than 9,000 flights have been canceled.