In July three hurricanes developed, two of which reached major hurricane strength.
Four storms became hurricanes, of which none reached major hurricane strength.
On average around 9 tropical storms form each year, with 5 reaching hurricane strength.
It actually had glass walls, which looked hurricane strength.
Marilyn formed on September 13, and grew to hurricane strength soon after.
It moved to the northeast, and reached hurricane strength the next day.
In a typical year, 55 - 60% of all tropical storms make it to hurricane strength.
It moved quickly through the islands, and reached hurricane strength on the 18.
It reached hurricane strength on October 6 and started recurving to the north.
That energy set it on the path to reaching hurricane strength.