The depression quickly developed into a tropical storm later that day.
It developed into a tropical storm the following morning.
Later that day, it developed into a tropical storm.
It tracked west-northwestward, and developed into a tropical storm the following day.
As we suspected, she has already developed into a dangerous storm.
The system turned northward, developing into a tropical storm.
The system drifted north-northwest, developing into a tropical storm that night.
The system developed into a tropical storm on August 20.
In the course of the afternoon the weather deteriorated and developed into a full storm.
The system developed further into a cyclonic storm on May 29 as it moved to the north.
