There is a pretty sturdy eyewall surrounding this center, and cloud tops on this infrared imagery are colder than its surrounding convection to the west.
As the storm moves further west, water is expected to rapidly move west as well, likely flooding out beaches and going inland. However, the big concern is high tide. High tide is expected to occur this evening, between the 8-9 PM hour. When this happens, it is likely that the worst flooding of this storm will occur. Storm surge as high as 12 feet, combined with high tide, extreme winds and heavy rain will lead to a perfect combination of a terrible flooding situation.
There is a less likely area of power outages to the west, where cities like Chicago, Detroit and Louisville are at risk. However, the chance of a power outage is less likely than that compared to the Delmarva area. The plain fact is, power will go down across the Northeast. This power will be out for over a day, possibly up to a week in the main impact zone, where Sandy will make landfall.
This is dangerous. If you haven't evacuated and you were ordered to, your life is at risk. Those who stay behind and are near the landfall zone are facing a very serious and catastrophic event, where lives are definitely under the gun.