 The Japanese Meteorological Agency states that Val was a continuation of Tess , which moved east @-@ northeast from Taiwan to the south of Japan in early July . Its circulation center moved along a frontal @-@ like band east of Taiwan on July 1 . Isolated convection was seen near the low pressure center at the time . When deeper convection formed on July 3 , Val was deemed to become a tropical storm . In the Joint Typhoon Warning Center write @-@ up , it was considered a subtropical cyclone after the fact . The cyclone accelerated northeast , and by July 4 whatever central convection it once had was gone and it was considered an extratropical cyclone late that morning . 
