Tropical Storm Pewa crossed the International Date Line and has moved out of the Central Pacific Hurricane Zone.
The Joint Typhoon Warning Center at Pearl Harbor said the storm was about 833 miles east-southeast of Wake Island early this morning.
Maximum sustained winds were 65 mph and the storm is expected to strengthen into a typhoon when winds reach 74 mph.
Pewa is moving northwest could come close to Wake Island by Wednesday.
Closer to Hawaii, forecasters are watching a weak low pressure system that was about 1,100 miles east-southeast of Hilo at 8 a.m.
The system has only a 10 percent chance of developing into a tropical cyclone, but it could bring rain to the Big Island by mid-week.