sentences:  Once entering the Central Pacific Hurricane Center's area of responsibility, Guillermo briefly weakened to a tropical depression before re-attaining tropical storm status.On August 15, the storm reached an unusually high latitude of 41.8°N before transitioning into an extratropical cyclone.The remnants persisted for more than a week as they tracked towards the northeast and later south and east before being absorbed by a larger extratropical system off the coast of California on August 24.