"The results of the hurricane." Davis, p. 612. Hispanic Reading Room: Hurricane San Ciriaco. Summary: On August 8, 1899, Puerto Rico experienced one of the most destructive hurricanes in history. It rained for 28 days straight and the winds reached speeds of 100 miles per hour. The loss of life and property damage were immense. Approximately 3,400 people died in the floods and thousands were left without shelter, food, or work.