The origins of Tropical Storm Georgette were from a tropical wave that moved off the west coast of Africa on September 1. Lacking organization, the wave was difficult to track as it moved across the Atlantic basin. Convection eventually increased on September 7, as the system approached the Lesser Antilles. On September 14, Hurricane Karl developed from the northern portion of the system over the western Caribbean Sea; however, the southern portion of the wave crossed northern Central America and entered the Pacific Ocean on September 17. The area of disturbed weather was first mentioned on the National Hurricane Center (NHC) around that time, but signification development was initially not anticipated. Wind shear was forecast to decrease slightly; however, and based on this the NHC gave the system a medium chance of undergoing tropical cyclogenesis during the next two days.
Gradual development took place as convection consolidated around the center of circulation while located west of Sonora. During the afternoon of September 20, an area of low pressure developed within the system, prompting the NHC to classify it as a tropical depression. At this time, the depression was situated roughly 240 mi (390 km) south-southeast of Cabo San Lucas. Situated along the western edge of a subtropical ridge, the system was steered towards the north-northwest throughout its existence.
Within hours of becoming a depression on September 20, strong wind shear caused convection to diminish. However, data from an ASCAT scatterometer pass revealed that the system attained gale-force winds, resulting in the depression being upgraded to a tropical storm on 0000 UTC September 21. Operationally, the first advisory on storm was not issued until 1200 UTC, where it was named Georgette. Meanwhile, thunderstorm activity increased near the center of the storm. Little change took place throughout the day as the storm approached Baja California Sur. Around 1800 UTC, Georgette made landfall near San Jose del Cabo with winds of 40 mph (65 km/h). Additionally, a barometric pressure of 999 mbar (hPa; 29.5 inHg) was measured. Shortly before entering the Gulf of California, Georgette weakened to a tropical depression. Maintaining winds of 35 mph (55 km/h), the storm later made a second landfall near San Carlos in Sonora. Shortly after moving inland, the low-level circulation dissipated over the mountains of western Mexico.
Prior to the arrival of Georgette, the Mexican government issued a tropical storm warning for extreme southern Baja California Sur., but was dropped when Georgette moved inland. Officials warned rural areas in Baja California Sur of heavy rain and high wind. Forecasters at the NHC noted the potential for up to 10 in (25 mm) of rainfall, especially over the higher terrain. The forecasters also noted potential for deadly flooding and mudslides. Officials evacuated over 1,000 families from floodplains and opened four shelters in Los Cabos.
In Sonora, the state's civil protection committee placed the south portion of the state under an "orange" alert, and a "red" alert soon after; the alert was lifted that same evening, after Georgette moved inland. A total of 52 shelters were opened in the Cajeme municipality. In Guaymas, 300 people from the city and surrounding areas were placed in shelters; 250 more people sought shelter from Georgette in Empalme. Schools in Bahía Kino and coastal areas of the Hermosillo Municipality suspended classes as a precaution. Classes resumed statewide on September 23.