“Confidence remains high that Iona will stay well south of the Hawaiian Islands,” forecasters report. Hurricane-force winds extend outward up to 15 miles from the center, while tropical-storm-force winds extend outward up to 70 miles from the center. There are no other coastal watches or warnings in effect.

The least active tropical basin watched by NOAA suddenly has several systems being watched, but none threaten Hawaii.

Tropical Storm Iona was about 730 miles south-southwest of Honolulu and was moving to the west at 22 miles per hour. The National Hurricane Center said additional weakening is expected Wednesday, and then it will maintain intensity Thursday as it moves over warmer sea surface temperatures.