[7] Even though the James Lykes noted that an area of disturbed weather south of the Pacific coast of Mexico was poorly organized, it reported south-southwest winds of 50 mph (80 km/h) on June 20.

A computerized mosaic showed a spiral vortex with the center over land, which was unhelpful in tracking the storm because ship reports noted that the circulation was over water.

The remnant low of Bonny had no kinetic energy, causing the forecasters to note that it had a ragged appearance on satellite imagery.

[4] Estelle was a tropical storm that spent most of its life as a depression as a result of a southward shift in trade winds and the ITCZ, which provoked an early weakening and prevented re-intensification.

The group that oversaw the Central Pacific at the time – the Joint Hurricane Warning Center – issued the depression's final advisory on August 1.

[3] The trade winds that had resulted in the weakening of Estelle in late July had decreased in early August, allowing a weak disturbance in the ITCZ to organize near Acapulco.

The depression would continue to strengthen and, after acquiring significant cirrus outflow, was upgraded to tropical storm intensity on August 6.

The feeder bands, which helped the hurricane to reach its peak intensity, continued to persist over warm water until August 11, when the cirrus cap over Fernanda became uncoupled to the east, thus exposing the west side of the storm.

Plane reports showed the hurricane had moved under westerly winds in the troposphere, which resulted in the storm weakening to a depression on August 13.

Although a ship in the region reported 40 mph (65 km/h) winds and 14-foot (4.3 m) waves, a satellite picture revealed a cloud mass of amorphous quality.

Although a little vortex in the region was visible, the system would show little development for 48 hours until, on August 7, stronger rotation and outflow were apparent in satellite imagery.

The overcast breaking away was related to a newly formed low, which moved north-northwest while rapidly intensifying, becoming a tropical storm on August 17.

Hyacinth continued to move north-northwestward, entering the mouth of the Gulf of California later that day, and a ship reported a barometric pressure of 994 millibars (29.4 inHg).

The storm passed 60 mi (95 km) east of La Paz, Baja California Sur, on August 18, and the next day, it made landfall near Los Mochis, Sinaloa.

The clouds associated with the storm were tracked into the southwestern United States, causing showers and thunderstorms over Arizona, New Mexico, and Colorado on August 20.

[4][6] Despite never making landfall while active, Iva was responsible for driving clouds and moisture inland, causing slight showers on August 26 in the area of Yuma, Arizona, which was 720 mi (1,160 km) away for the center of the storm.

After slight rainfall in the morning, a 30% chance of precipitation and the possibility of thunderstorms linked to the remnants was predicted for the rest of the day.

[8] The other disturbance associated with the ITCZ that also formed Iva, 777 mi (1,250 km) south of Cabo San Lucas had a central pressure of 1,007 millibars (29.7 inHg) reported by a ship passing through the center along with calm winds on August 23, with the depression becoming a tropical storm later that day.

A lack of surface information prevented Hurricane Hunter investigation into the system until August 25, when the disturbance developed into Tropical Storm Kathleen.

The same ship would later report a wind speed of 50 mph (80 km/h) from the north-northwest and a pressure estimate of 1,009 millibars (29.8 inHg) was determined via satellite, leading to the system to be upgraded to storm strength.

[4] There were four Sinaloan casualties from the hurricane, and a worker in Texas was injured when the roof of a plant they were working at collapsed from accumulated rainfall due to the interaction between Naomi and a frontal system over the Gulf Coast.

Due in large part to the help of Automatic Picture Transmission technology, two towns downriver from the dam were saved when it was kept closed.

A ship called the Sapporo Maru passed 75 mi (121 km) north of the center reported swells of 9.5-foot (2.9 m), but winds of only 25 mph (40 km/h).

A vortex developed in the center, helping the cyclone to intensify into a tropical storm on September 29 and the next day, it was upgraded to a hurricane.

[4] Although the system was originally missing from best track data, a revision proposed to National Hurricane Center caused the storm to be reinserted with a peak intensity of 50 mph (80 km/h) winds and a central pressure of 1,005 millibars (29.7 inHg).

[7] The final storm of the season developed from unknown origins, although there is a possibility that anticyclogenesis over Mexico that occurred after the dissipation of Simone may have played a part in the formation.

The same picture also showed a compact central dense overcast, a large mass of deep convection, spanning three degrees of latitude, cirrus outflow, and loose banding features.

At the time of the west-northwest turn, satellite pictures picked up a separation of the cirrus cap, causing the storm to weaken.

It formed on July 12 1,493 mi (2,403 km) west of South Point, Hawaii, and moved in a general westward direction.

It formed on October 11 over 1,000 mi (1,600 km) south-southeast of Cabo San Lucas and moved slowly to the northwest before turning to the southwest.