The following day, rapid intensification took place through September 14.

Significant, but not rapid, intensification occurred during the next several hours.

The possibility of rapid intensification at the time was low.

Gradual development took place over the following day before rapid intensification began.

There was a period of rapid intensification and the eye reappeared.

"due to rapid intensification of the system", which had continued to consolidate.

Several hours later, the storm began to undergo rapid intensification, following the formation of an eye.

The rapid intensification occurred within a 23 hour period.

The system reached hurricane status by August 1 before undergoing rapid intensification the following day.

In addition to the rapid intensification, Rick was also growing in size.