A rapidly intensifying system threatens the East Coast.

The storm racing up the Eastern Seaboard today is strengthening at a pace that has startled forecasters, pushing more than fifty million people into its expanding danger zone. What began as a winter nor’easter has deepened so quickly over the Atlantic that it is expected to cross the threshold into a bomb cyclone tonight. Officials from North Carolina to Maine are bracing for a night of flooding, outages and sudden shifts that make planning difficult.



