Forecasting a storm's intensity can be more challenging than predicting where it will make landfall. Forecast models, particularly for hurricanes, have improved, but they can still miss intensification or overstate it. Below is the intensity for Erin so far, and how experts at the Hurricane Center believe it will weaken or strengthen.

Hurricane Erin is expected to remain offshore—but its effects could still reach parts of the New York coastline this week. See the tracker.

Hurricane Erin is on track to stay offshore but still bring dangerous rip currents to New York and New Jersey beaches.

The Norwegian Escape is extending its visit to New York City due to the impact of Hurricane Erin on the East Coast. After repositioning from Miami, the Norwegian Cruise Line ship was scheduled to sail from its new homeport on Wednesday.

NYC's mixed weather includes slight showers, sunny days, with a hazardous weather outlook due to Hurricane Erin.

Hurricane Erin weakened to a category 3 hurricane during the early hours of Aug. 19 as it moves closer to the East Coast, according to the National Hurricane Center. As of 5 a.m. Aug. 19, Erin was located 675 miles southwest of Bermuda and 750 miles from Cape Hatteras,