
Hurricane Irma is a Category 3 storm.
Hurricane Irma may reach Category 4 status tonight as long-range models continue to show the storm threatening the eastern seaboard.
"Irma is a category 3 hurricane on the Saffir-Simpson Hurricane Wind Scale," the National Hurricane Center explained. Maximum sustained winds are 120 miles per hour.
Different models diverge widely on where the hurricane may strike landfall -- a reminder of the unreliability of forecasting this far out.