Hurricane One

On June 4, a tropical cyclone formed south of the Gulf of Tehuantepec. It paralleled the coast, became a hurricane, and approached the coast. On June 11, it made landfall north of Mazatlán and dissipated inland. Some damage in Mazatlán was reported.^[1]

Tropical Cyclone Two

From August 18 to 20, a tropical cyclone existed in the waters west of Manzanillo. A ship reported a pressure of 29.63 inHg (100.3 kPa).^[2]

Hurricane Three

On October 3, a tropical cyclone formed near the Revillagigedo Islands. It slowly moved northeasterly, became very intense, and made landfall north of Mazatlán on October 4 or October 5. Once inland, it greatly increased in speed, and dissipated October 7, while over Arkansas. A ship in the eye of the hurricane reported a pressure of 27.72 inHg (93.9 kPa), low enough to make this the most intense Pacific hurricane in Mexican waters known at the time.^[3]

This hurricane hassled a number of ships. One of them needed to be repaired at a cost of $10,000 (1930 USD), and another had its cargo damaged.^[3]

Hurricane Four

On October 9, a tropical cyclone formed in the Gulf of Tehuantepec. Eventually becoming a hurricane, it moved up the coast as far as Acapulco. It was last seen on October 11. The lowest pressure reported was 29 inHg (98 kPa).^[3]

This hurricane caused damage in Acapulco. Many buildings were demolished by the storm, and roads and telegraph lines were destroyed.^[4] Damage to property was heavy, but no one was killed or injured.^[5]

Hurricane Five

On October 16, a tropical cyclone existed somewhere between Acapulco and Cape Corrientes.^[3] Two days later, it made landfall near La Manzanilla, Jalisco as a hurricane near with a pressure of 98.3 kilopascals (29.0 inHg).^[6] It or its remnants managed to cross the Isthmus of Tehuantepec and enter the Bay of Campeche, where they dissipated on October 20.^[3]