The 2005 Pacific hurricane season was a slightly inactive season that produced 17 tropical cyclones. It officially started on May 15 and ended on November 30, dates which conventionally delimit the period during which most tropical cyclones form in the northeast Pacific Ocean. The first tropical cyclone, Hurricane Adrian, developed on May 17, while the last storm Tropical Depression Sixteen-E, dissipated on October 20. During the year, a total of 17 tropical cyclones, 15 tropical storms, 7 hurricanes and 2 major hurricanes formed. The most intense hurricane, Hurricane Kenneth remained out over open waters for the duration of its existence. However, the remnants of the storm caused minor flooding on the Island of Hawaii. September was the most active month of the year, as 6 of the 17 tropical cyclones formed during this time.