The following day, the depression intensified into a tropical storm.

Within twelve hours, the depression intensified into a tropical storm.

Within six hours of developing, the depression had intensified into a tropical storm.

The depression quickly intensified, and became a tropical storm on September 9.

The depression further intensified, becoming a tropical storm on July 2.

As a result, production continued to plummet and the depression intensified.

The depression quickly intensified into a tropical storm and was given the name Marco later that day.

Over the following 12 hours, further development took place, and the depression intensified into a tropical storm.

The depression intensified, making a sharp turn on October 1.

The depression moved eastwards over the next few days but did not intensify any further.