Hurricane Erin update: Forecast sees huge storm moving closer to U.S.

A map shows the likely arrival times of tropical-storm-force winds along the East Coast, driven by Hurricane Erin.

Forecasts nudge Erin's likely path to the west, increasing the risks at U.S. beaches. Experts say the storm's massive size, rather than its windspeeds, is what makes it a threat.

(Image credit: NOAA)