The 1958 Atlantic hurricane season included every tropical cyclone either affecting or threatening land. There were ten named storms as well as one pre-season tropical storm. Seven of the storms became hurricanes, including five that were major hurricanes, or the equivalent of a Category 3 on the Saffir-Simpson scale. The strongest storm was Hurricane Helene, which became a strong Category 4 hurricane with 150 mph (240 km/h) winds and a barometric pressure of 930 millibars (27 inHg) while just offshore the southeastern United States.
The 1961 Atlantic hurricane season was a very active Atlantic hurricane season, with an accumulated cyclone energy (ACE) total of 189, the highest since 1950 and until being surpassed by 1995. The season, however, was an average one in terms of named storms. The season featured eight hurricanes and a well above average number of five major hurricanes. It was previously thought that the season had a record-tying seven major hurricanes, before the Atlantic hurricane reanalysis project downgraded two storms in 2019. Two Category 5 hurricanes were seen in 1961, making it one of only eight Atlantic hurricane seasons to feature multiple Category 5 hurricanes in one season. The season started on June 15, and ended on November 15. These dates conventionally delimit the period of each year when most tropical cyclones form in the Atlantic basin. The first system, an operationally unclassified tropical depression, formed offshore east Central Florida on June 10, but dissipated a few days later. Next, Hurricane Anna developed in the eastern Caribbean Sea near the Windward Islands on July 20. It brought minor damage to the islands in, as well as wind and flood impacts to Central America after striking Belize as a hurricane. Anna caused one death and about $300,000 (1961 USD) in damage. Activity went dormant for nearly a month and a half, until Hurricane Betsy developed on September 2. Betsy peaked as a Category 4 hurricane, but remained at sea and caused no impact.
The 1955 Atlantic hurricane season was, at the time, the costliest season ever recorded, just ahead of the previous year. The hurricane season officially began on June 15, 1955, and ended on November 15, 1955. It was an extremely active season in terms of accumulated cyclone energy (ACE), but only slightly above average in terms of storm formation, with 13 recorded tropical cyclones.
The 1957 Atlantic hurricane season featured one of the longest-travelling tropical cyclones in the Atlantic basin, Hurricane Carrie. Nevertheless, the season was generally inactive, with eight tropical storms – two of which went unnamed – and three hurricanes, two of which intensified further to attain major hurricane intensity. The season officially began on June 15 and ended on November 15, though the year's first tropical cyclone developed prior to the start of the season on June 8. The final storm dissipated on October 27, well before the official end of the season. The strongest hurricane of the year was Carrie, which reached the equivalent of a Category 4 hurricane on the Saffir–Simpson hurricane scale on two separate occasions in the open Atlantic; Carrie later caused the sinking of the German ship Pamir southwest of the Azores, resulting in 80 deaths.
The 1956 Atlantic hurricane season featured a decent number of tropical cyclones, although most tropical storms and hurricanes affected land. There were twelve tropical storms, a third of which became hurricanes. One of the hurricanes strengthened to the equivalent of a major hurricane, which is a Category 3 or greater on the Saffir–Simpson scale. The strongest hurricane of the season was Betsy, which was also the most damaging storm of the season: it destroyed 15,000 houses and left $40 million in damage in Puerto Rico. Betsy was also the deadliest of the season, having killed 18 people in the French West Indies, two from a shipwreck in the Caribbean Sea, and 16 in Puerto Rico. Tropical Storm Dora struck Mexico in September and killed 27 people.
The 1954 Atlantic hurricane season was an above-average Atlantic hurricane season in terms of named storms, with 16 forming. Overall, the season resulted in $751.6 million in damage, the most of any season at the time. The season officially began on June 15, and nine days later the first named storm developed. Hurricane Alice developed in the Gulf of Mexico and moved inland along the Rio Grande, producing significant precipitation and record flooding that killed 55 people. Activity was slow until late August; only Barbara, a minimal tropical storm, developed in July. In the span of two weeks, hurricanes Carol and Edna followed similar paths before both striking New England as major hurricanes. The latter became the costliest hurricane in Maine's history.
The 1998 Pacific hurricane season was a fairly average Pacific hurricane season. Despite this, it had nine hurricanes and six major hurricanes, which was well above average. The season officially started on May 15 in the eastern Pacific and on June 1 in the central Pacific, and ended on November 30; these dates conventionally delimit the period during which most tropical cyclones form in that region. The first tropical cyclone developed on June 11, about ten days later than the normal start of the season. The final storm of the year, Hurricane Madeline, dissipated on October 20. Storm activity in the Central Pacific Hurricane Center's warning zone was low, with just one tropical depression observed in the region. Two tropical cyclones from the eastern Pacific also entered the central Pacific; the former did so as a hurricane.
The 1987 Pacific hurricane season was the last year in which the Eastern Pacific Hurricane Center was the primary warning center for tropical cyclones in the eastern Pacific Ocean. The season officially started May 15, 1987, in the eastern Pacific, and June 1, 1987, in the central Pacific, and lasted until November 30, 1987. These dates conventionally delimit the period of each year when the vast majority of tropical cyclones form in the northeastern Pacific Ocean.
The 1939 Pacific hurricane season ran through the summer and fall of 1939. Before the satellite age started in the 1960s, data on east Pacific hurricanes was extremely unreliable. Most east Pacific storms were of no threat to land. However, 1939 saw a large number of storms threaten California.
The 1955 Pacific typhoon season has no official bounds; it ran year-round in 1955, but most tropical cyclones tend to form in the northwestern Pacific Ocean between June and December. These dates conventionally delimit the period of each year when most tropical cyclones form in the northwestern Pacific Ocean. The season produced a large number of tropical storms but most of them were weak, and sources from American typhoon warning agencies often grossly overestimated the maximum wind speed of many systems which could not properly match with their respective central pressure observations.
The 1961 Pacific hurricane season was an event in meteorology. It officially started on May 15, 1961, in the eastern Pacific and lasted until November 30, 1961. Ten tropical cyclones, 9 named storms and two hurricanes formed during the 1961 season, none of the hurricanes reached beyond category 1 status on the Saffir-Simpson Hurricane Scale.
The 1900s Pacific hurricane seasons all began on May 15 of their respective years in the Eastern North Pacific Ocean and on June 1 in the Central North Pacific. They all ended on November 30, of each year. These dates conventionally delimit the period when tropical cyclogenesis usually occurs in the Northern Pacific basin, east of the International Date Line. However, Tropical cyclogenesis is possible at any time of the year. Before the dawn of the satellite era in the 1960s, data on Pacific hurricanes is extremely unreliable. For a few years, there are no reported cyclones, although many systems likely formed and went undocumented.
The 1932 Pacific hurricane season ran through the summer and fall of 1932. Before the satellite age started in the 1960s, data on east Pacific hurricanes was extremely unreliable. Most east Pacific storms were of no threat to land.
The 1962 Pacific hurricane season was a moderately active Pacific hurricane season that included two hurricane landfalls. The 1962 Pacific hurricane season officially started on May 15, 1962 in the eastern Pacific and June 1, 1962 in the Central Pacific Hurricane Center's area of responsibility and lasted until November 30, 1962 in both regions. These dates conventionally delimit the period of each year when most tropical cyclones form in the northeastern Pacific Ocean.
The 1953 Pacific hurricane season was the least active season on record. The season officially began on May 15 in the northeast Pacific Ocean and on June 1 in the central northern Pacific. They ended on November 30. These dates conventionally delimit the time of year when most tropical cyclones form in northeast Pacific Ocean. Before the satellite age started in the 1960s, data prior to that time on Pacific hurricanes is extremely unreliable as most east Pacific storms are of no threat to land.
The 2021 Pacific hurricane season was a moderately active Pacific hurricane season, with above-average activity in terms of number of named storms, but below-average activity in terms of major hurricanes, as 19 named storms, 8 hurricanes, and 2 major hurricanes formed in all. It also had a near-normal accumulated cyclone energy (ACE). The season officially began on May 15, 2021 in the Eastern Pacific Ocean, and on June 1, 2021, in the Central Pacific in the Northern Hemisphere. The season ended in both regions on November 30, 2021. These dates historically describe the period each year when most tropical cyclogenesis occurs in these regions of the Pacific and are adopted by convention. However, the formation of tropical cyclones is possible at any time of the year, as illustrated by the formation of Tropical Storm Andres on May 9, which was the earliest forming tropical storm on record in the Eastern Pacific. Conversely, 2021 was the second consecutive season in which no tropical cyclones formed in the Central Pacific.
