Earthquakes are very tough to predict, but people in the New Jersey region may want to prepare themselves for some more sudden shaking and rumbling in the wake of Friday morning’s magnitude 4.8 quake — one of the largest earthquakes to hit the state in more than a century. Experts from the U.S. Geological Survey say there’s nearly an 80% chance our region will be hit with an aftershock of magnitude 3.0 or higher within the next week and almost a 15% chance of an aftershock that’s magnitude 4.0 or stronger. That means the Garden State, and nearby states, could be in for more startling jolts, ra…