Joint Typhoon Warning Center issued a formation alert on the 18th and numbered the system 06S.

Fifteen hours later, the Joint Typhoon Warning Center issued the number 22W to the system.

The system was degsinated 19W by the Joint Typhoon Warning Center.

The following morning the Joint Typhoon Warning Center assigned the number 17W to the depression.

Of the 25, three systems were not tracked by the Joint Typhoon Warning Center.

The disturbance was first mentioned by the Joint Typhoon Warning Center on March 29.

The storm was given the number 22P by the Joint Typhoon Warning Center.

At that time, the Joint Typhoon Warning Center initiated warnings on the storm.

The Joint Typhoon Warning Center followed the next day.

The information below is mainly from the Joint Typhoon Warning Center.