1899 San Ciriaco hurricane
The hurricane weakened slightly while moving west-northward across the Caribbean Sea and made landfall in Guayama, Puerto Rico late on August 8 with winds of 140 mph (220 km/h). August 8 was the namesday of Saint Cyriacus, hence the hurricane's nickname. Several weather stations across the island reported low barometric pressures, with a reading as low as in Guayama. Wind shifts were also experienced across the island, primarily in the south and the west. The storm crossed Puerto Rico in approximately six hours and emerged into the Atlantic Ocean late on August 8, while weakening to a Category 3 hurricane, with winds decreasing to 120 mph (195 km/h). The hurricane would maintain this intensity for more than nine days. Continuing west-northward, the hurricane brushed the north coast of Dominican Republic on August 9. Thereafter, the system moved slowly northwestward through the Bahamas, striking Inagua on August 10 and Andros Island on August 12. According to telephone and telegraph reports from the Weather Bureau, the storm was predicted to make landfall in Florida.
1930 Dominican Republic hurricane
After passing over or near Dominica, the hurricane entered the Caribbean Sea with winds of , the equivalence of a Category 2 hurricane on the Saffir-Simpson hurricane scale. On September 2, the hurricane passed about 60 mi (95 km) southwest of Puerto Rico as it intensified into a major hurricane. Due to the storm's small size, winds on the island were below hurricane force. Continuing slowly west-northwestward, the hurricane continued to intensify as it approached the Dominican Republic. Captain Thomas Evans of the SS "Coamo" of the Porto Rico Line, its crew and passengers all survived being buffeted by the storm for seven hours and passing through the eye. He reported a barometric pressure of and a detailed description of its near capsizing off the coast of the Dominican Republic to "The New York Times" when they arrived in San Juan on September 4. The "New York Times" published the story on September 5 as "Steamer Outrides Storm's Full Fury: Caught in Vortex of Hurricane, Coamo Tilts Periously as Gail Strips Decks". A steamship just offshore recorded winds of , and also provided data to estimate the radius of maximum winds at 8 mi (13 km). At 1800 UTC on September 3, it made landfall near Santo Domingo, Dominican Republic with a minimum central pressure of . As it was still intensifying up until landfall, the peak winds were estimated at , although it is possible it attained Category 5 status. The worst of the hurricane occurred in a diameter of its landfall location.