 A broad area of convection formed to the southeast of Pohnpei in mid June . The convection formed a tropical depression on June 21 to the east of the Philippines . Tropical Storm Nancy was named the next and quickly strengthened into a typhoon with max winds of 75 kn ( 139 km / h ) before striking northeastern Taiwan . After departing the island Nancy weakened to tropical storm strength while moving north through the East China Sea . Nancy passed through the Korea Straits just before turning extratropical and accelerating northeastward into the Sea of Japan . Torrential rains fell throughout South Korea , as a result of flooding 12 people were killed and 22 @,@ 477 acres ( 90 @.@ 96 km2 ) of farmland were destroyed . 
