Hurricane Kate developed from a tropical wave in the central tropical Atlantic Ocean on 25 September. The tropical cyclone became a hurricane on 29 September and after temporarily weakening reached an estimated 125 mph wind speed category three intensity on 4 october. Kate's track was rather unusual.

It moved northwestward and then northeastward for several days. Then it made a sharp turn and moved westward across the central North Atlantic for five days before accelerating northeastward into the far North Atlantic Ocean. Kate became a powerful extratropical low east of Newfoundland on 8 October and merged with another low pressure system near Norway on 10 October to become one of the so called equinoctial gales.Source: NOAA.

More on the 2004 Atlantic hurricane season here.