Forecasters at the Central Pacific Hurricane Center in Honolulu said Sunday that Tropical Storm Unala has formed far west-southwest of Hawaii.
Unala is the second named storm of the season to form in the Central Pacific, which is defined as the area north of the equator between 140-degrees west longitude and the International Date Line.
Tropical cyclones that attain tropical-storm strength in the Central Pacific are given Hawaiian names. Pewa formed far southwest of Hawaii on Friday. Before Pewa, the last system to form in Central Pacific waters was Omeka in 2010.
In a special 7 p.m. Sunday advisory, the Center said that Tropical Storm Unala is about 750 miles south of Midway Island or about 1,350 miles west of Lihue, moving west near 20 mph. This motion is expected to continue for the next 12 to 24 hours, according to forecasters.
Maximum sustained winds were near 40 mph, with higher gusts. Forecasters said weakening is forecast and that Unala is expected to dissipate by Monday evening.
Like Pewa, Unala will keep its name when it's forecast to cross the International Date Line early Monday and depart Central Pacific waters. The Japan Meteorological Agency's Regional Specialized Meteorological Center (RSMC) in Tokyo will then issue advisories on Unala.