sentences:  Later that day, Guillermo transitioned into an extratropical cyclone at an unusually high latitude of 41.8°N, roughly 850 mi (1,370 km) south-southeast of Unalaska, Alaska.Over the following days, the remnants of the hurricane turned northeastward towards the Pacific coast of North America.On August 19, the system moved within 575 mi (925 km) of Vancouver Island, British Columbia, before Guillermo tracked southward.