It was officially unnamed, with the cargo ship  providing vital meteorological data in assessing the storm. The twelfth tropical cyclone of the 1975 Pacific hurricane season, it developed from a cold-core upper-level low merging with the remnants of a tropical cyclone on August 31, well to the northeast of Hawaii. Convection increased as the circulation became better defined, and by early on September 2, it became a tropical storm.
The unnamed storm was tracked by a cargo ship that supplied critical weather information about the tempest. It was the twelfth cyclone of the 1975 Pacific hurricane season, forming from a cold-core low-pressure system merging with the remnants of another cyclone on August 31, northeast of Hawaii. As the storm intensified, convection increased, and by September 2, it had become a tropical storm.