 Forming in proximity to the tropical upper tropospheric trough ( TUTT ) , its initial disturbance was first spotted as a weak band of convection near the International Dateline in the subtropics on September 13 . Slowly developing , a low pressure system was spotted with the thunderstorm activity on the morning of September 15 . Becoming a tropical storm the following afternoon , Lola recurved around the western periphery of the subtropical ridge . The cyclone accelerated northeast on September 17 , and by the morning of September 19 , Lola had become an extratropical cyclone along the frontal zone which swept it out of the subtropics . 
