 Already classifying it as a tropical storm, the Central Pacific Hurricane Center (CPHC) issued their first advisory on the system at 0900 UTC on December 20, at which time it was situated roughly 505 miles (815 km) south of Midway Island.Upon issuing this advisory, they designated the system as Tropical Storm Omeka, the first named storm of the Central Pacific season.The storm generally tracked towards the northeast, in response to a mid-level low to the west, throughout the remainder of its existence.