27 while heading east-northeast over mainland Mexico. Irah blew over some power and communication lines during its passage over the southern tip of the Baja California Peninsula. Heavy rain fell over parts of Mexico, with the highest total being at Sierra de la Laguna. One person was injured and at least ten houses were destroyed in Cabo San Lucas. No one was killed. There was some concern that the hurricane could disrupt splashdown procedures for astronauts at the end of Skylab 3; however, the return to Earth was not seriously affected. Tropical Storm Jennifer On September 23, another depression formed. It took a northeasterly path, rotating around the southern periphery of Hurricane Irah as part of a Fujiwhara interaction. It strengthened into a tropical storm late on September 24. The peak windspeed of this tropical cyclone was . Jennifer then weakened to a depression and turned to the north-northeast. Jennifer brushed the Islas Marías. The cyclone made landfall near just southeast of Mazatlán and dissipated September 27. Tropical Depression Jennifer caused rain over several parts of Mexico. The highest total was at Navarette/San Blas. No one was killed and no damage was reported. Hurricane Katherine Katherine became a tropical storm on September 29, just six hours after forming. It headed out to sea. On October 1, it became a Category 2 hurricane. It peaked in windspeed the next day. After weakening to storm strength, it crossed 140°W and entered the central Pacific. Katherine continued its slightly south of westward track. It dropped to a depression on October 9, and dissipated shortly after that due to the influence of a cold trough Hurricane Lillian A depression that formed October 5 reached storm strength the same day. It generally paralleled the coast of Mexico far offshore. Lillian reached minimal hurricane strength on October 7 and peaked the next day. The hurricane began to weaken immediately thereafter and dissipated on October 9. Through its life, Lillian at first traveled generally west-northwestward, and then westward. Lillian never threatened land, causing no known impact. Storm names These names were used for storms that formed in the eastern Pacific during this season. It is the same list used in the 1969 season. Storms were named Katherine and Lillian for the first time this year. No names were retired, so this list was used again in the 1977 season. Names that weren't assigned are colored gray. The