Pulasan was a tropical storm in the Philippine Sea Tuesday morning Japan time, the Joint Typhoon Warning Center said in its latest advisory.
The tropical storm had sustained wind speeds of 40 miles per hour.
Where will it rain?
Flash flooding can occur well inland and away from the storm’s center. Even weaker storms can produce excessive rainfall that can flood low-lying areas.
What does the storm look like from above?
Satellite imagery can help determine the strength, size and cohesion of a storm. The stronger a storm becomes, the more likely an eye will form in the center. When the eye looks symmetrical, that often means the storm is not encountering anything to weaken it.
Typhoon season is year-round; however, most typhoons form from early July through mid-December.
Most typhoons scrape or strike places like the Philippines, Japan and Taiwan; they can also hit the Korean Peninsula, China and Vietnam, bringing damaging winds and storm surges.
Typhoons have also hit U.S. territories, causing billions of dollars in devastating damage to places like Guam, which was battered by Super Typhoon Mawar in May last year.