1954 Pacific hurricane season

The 1954 Pacific hurricane season featured below-average activity, with eleven tropical storms identified. The season officially started on May 15 and lasted until November 30. These dates conventionally delimit the period of each year when most tropical cyclones form in the Pacific basin. The majority of the year's storm remained offshore and caused little to no adverse impact on land. However, a tropical storm in October brought flooding rain to Mexico and Guatemala that left five people dead and thousands homeless. An unknown disease in the storm's wake killed a further 35 people.

The relative lack of activity is a byproduct of limited monitoring tools at the time. In 1954, Pacific hurricanes were only able to be identified by ship reports (either post-trip logs or in situ transmissions) and coastal observations. No more than eight coastal cities reported regular observations. Additionally, only two cities, Empalme, Sonora, and Mazatlán, Sinaloa, launched radiosondes—a key factor in detecting tropical cyclones at the time—further limiting detection capabilities.

1970 Pacific hurricane season

The 1970 Pacific hurricane season began on May 15, 1970 in the east Pacific, and on June 1, 1970 in the central Pacific. It ended on November 30, 1970. These dates conventionally delimit the period of time when tropical cyclones form in the eastern Pacific Ocean.

This season had an above average number of storms. There were twenty-one tropical cyclones, of which eighteen reached tropical storm strength. Four storms became hurricanes, of which none reached major hurricane strength. In the central Pacific, one hurricane and one tropical depression formed. One of the depressions crossed the dateline to become a typhoon.

Storms

Hurricane Adele

An area of low pressure lacked strong convection until May 30, when it strengthened into Tropical Depression One-E. On May 31, the storm further intensified into Tropical Storm Adele, the first named storm and Hurricane of the season. Adele tracked westward, as it strengthened into a hurricane on June 1. It reached its peak intensity later that day. As Adele moved west, A hostile environment caused it to weaken into a Tropical Storm. Adele further weakened, and it was downgraded into a depression on June 7. It was degenerated into an open trough, and it dissipated on June 7. Despite that it remained away from any land masses, Adele was retired after this season for unknown reasons.

1950 Pacific hurricane season

The 1950 Pacific hurricane season was notable for one of the storms being the wettest tropical cyclone in United States history. Seven known tropical cyclones occurred during the season, the earliest of which formed on June 14 and the latest of which dissipated on October 3. These dates fall within the range of most Eastern Pacific tropical cyclone activity.

Season summary

Only seven tropical cyclones were observed in the Eastern Pacific during this season, which is well below the 1995-2008 average of 15 per year. However, it is likely that other tropical cyclones in the Central or Eastern Pacific basin in 1950 went operationally unnoticed, due to small tropical cyclone size, sparse ship reports, relatively unpopulated coastlines, and lack of modern technology. Of the seven tropical cyclones, six attained hurricane status. None of the tropical cyclones became a major hurricane, which is Category 3 or greater on Saffir–Simpson Hurricane Scale. In addition, a tropical cyclone developed within the Central Pacific basin. Similar to 1949, most of the seven tropical cyclones did not differentiate significantly in intensity during the duration, with the exception of Hurricane Hiki and Tropical Storm Five.