the monsoon trough formed a tropical depression on august 27. it headed generally westward, reaching tropical storm strength on the 30th and typhoon strength on the 31st. yancy turned to the northeast, where it rapidly intensified to a super typhoon on the 2nd. the storm weakened to a typhoon before making landfall on southwestern japan on the 3rd, and dissipated 2 days later over the sea of japan. yancy brought strong winds to japan, amounting to 42 casualties and widespread damage.