Typhoon In-Fa remained on track to pass about 180 miles north of Saipan and about 300 miles north of Guam on Friday, according to the Joint Typhoon Warning Center.
On Tuesday afternoon, In-Fa was located at 14.3 degrees north latitude and 162.2 degrees east longitude, more than 1,100 miles east of Guam. It was a Category 3 storm with winds of 125 mph, and was moving to the west-northwest at 2 mph.
Forecasters with the National Weather Service said In-Fa was expected to make a slight turn toward the west and increase in forward speed through Wednesday, then turn back to the west-northwest.
The storm was expected to begin intensifying on Wednesday night.
Typhoon winds extended out 35 miles from the center of the storm, with tropical storm-force winds extending 90 miles from the center.