A tropical disturbance formed south of the Gulf of Tehuantepec on September 23.
Steered by a deep layer high over Mexico, the disturbance moved west for four days before attaining tropical depression status.
Upon becoming a tropical cyclone the depression was situated over warm waters; however, wind shear subsequently increased in the vicinity of the storm.
Therefore, significant development was impeded as the depression curved back to the north along an adjacent upper-level low.

As conditions aloft turned favorable by September 28, the depression strengthened into Tropical Storm Octave at 1800 UTC that day.
Within six hours, Octave attained its peak intensity of 50 mph (80 km/h) and decreased in forward speed while turning to the northeast.
On September 30, Octave began to accelerate towards the northeast as it began to weaken due to cooler waters and increasing vertical wind shear.
Consequently, the winds gradually decreased to 35 mph (55 km/h) and the storm was downgraded back to tropical depression status during the afternoon.
At 1200 UTC on October 2, the EPHC issued their last advisory on the storm as the surface circulation had dissipated.
A tropical disturbance formed south of the Gulf of Tehuantepec on September 23. Steered by a deep layer high over Mexico, the disturbance moved west for four days before attaining tropical depression status. Upon becoming a tropical cyclone the depression was situated over warm waters; however, wind shear subsequently increased in the vicinity of the storm. Therefore, significant development was impeded as the depression curved back to the north along an adjacent upper-level low.
As conditions aloft turned favorable by September 28, the depression strengthened into Tropical Storm Octave at 1800 UTC that day. Within six hours, Octave attained its peak intensity of 50 mph (80 km/h) and decreased in forward speed while turning to the northeast. On September 30, Octave began to accelerate towards the northeast as it began to weaken due to cooler waters and increasing vertical wind shear. Consequently, the winds gradually decreased to 35 mph (55 km/h) and the storm was downgraded back to tropical depression status during the afternoon. At 1200 UTC on October 2, the EPHC issued their last advisory on the storm as the surface circulation had dissipated.
Tropical Storm Octave (1983)