Last update was forecast from 8pm Eastern, September 11, 2017.
Hurricane Irma, the most powerful Atlantic storm on record, is likely to cause massive destruction wherever it makes landfall. But predicting exactly where it will come ashore is a difficult task.
The National Hurricane Center issues forecasts every 3 hours, and this map will update automatically. The line shows the most likely predicted path, with a cone reflecting the uncertainty around that. All times are US Eastern.
Hurricane force winds are 74 miles per hour and above, but Irma's strongest winds have been much more powerful. The storm has already delivered winds of 185 mph and threatens storm surges of 10 to 20 feet.
Updated to include links to information from the National Hurricane Center.
Hurricane Irma has already delivered winds of 185 mph. An earlier version of this article incorrectly said 85 mph.