User:Juliancolton/1993 Pacific hurricane season

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Juliancolton/1993 Pacific hurricane season
Season summary map
First system formed June 11, 1993
Last system dissipated October 14, 1993
Strongest storm Lidia – 930 mbar (hPa) (27.47 inHg), 150 mph (240 km/h) (1-minute sustained)
Total depressions 18
Total storms 15
Hurricanes 11
Major hurricanes (Cat. 3+) 9
Total fatalities 42
Total damage $37 million (1993 USD)
Pacific hurricane seasons
1991, 1992, 1993, 1994, 1995

The 1993 Pacific hurricane season officially started May 15, 1993 in the eastern Pacific, and June 1, 1993 in the central Pacific, and lasted until November 30, 1993. These dates conventionally delimit the period of each year when most tropical cyclones form in the northeastern Pacific Ocean.


June and July[edit]

The 1993 season officially started on May 15, 1993 in the eastern Pacific, and June 1 in the central Pacific; it lasted until November 30 in both basins.[1] The first tropical cyclone developed on June 11, from a broad and persistent area of disturbed weather, about 960 mi (1,540 km) southwest of the Baja Peninsula. The depression attained tropical storm status on June 12, receiving the name Adrian. While drifting northwest it strengthened to Category 1 hurricane status on the Saffir-Simpson Hurricane Scale, though increasing wind shear subsequently weakened the storm. Adrian dissipated on June 19.[2]

The second storm of the season formed as a tropical depression on June 18. Based on ship reports of tropical-storm forced winds, the depression was quickly upgraded to Tropical Storm Beatriz. Beatriz moved northwest due to influence from the outflow from developing Tropical Storm Arlene in the Gulf of Mexico, briefly reaching its peak intensity of 65 mph (105 km/h) on June 19 before making landfall near Puerto Escondido, Oaxaca. Beatriz quickly weakened after landfall, dissipating over the mountainous Mexican terrain.[3]

Hurricane Calvin

An area of scattered deep convection, possibly associated with a tropical wave, developed in the Gulf of Tehuantepec on July 2. It drifted westward, slowly concentrating over the warm Pacific waters. Banding features became more pronounced, and the system organized into Tropical Depression Four-E on July 4. Environmental conditions quickly became more favorable for development, and the next day, it was upgraded to Tropical Storm Calvin. Continuing to intensify, Calvin ultimately peaked as a Category 2 hurricane; the cyclone struck western Mexico near Manzanillo, becoming the deadliest storm of the 1993 season.[4][5]

A tropical wave emerged from the western coast of Africa on June 27, and tracked westward into the eastern Pacific, where it spawned a depression on July 14. It quickly attained tropical storm intensity, and became a hurricane 30 hours later. The storm, named Dora, peaked over open waters as a Category 4hurricane with a minimum pressure of 945 mb. Never having affected land, Dora maintained a general west-northwest track throughout its duration. It dissipated on July 21.[6]

The system that would eventually become Hurricane Eugene was first identified on July 15, while Dora was active over open waters. The disturbance was classified as a tropical cyclone that same day, and became a tropical storm on July 16; by the next day, it had evolved into a hurricane. Originally moving nearly due westward, Eugene abruptly turned to the northwest on July 18. However, over subsequent days it resumed a westward path. Topping out as a Category 3 hurricane, it weakened to a tropical storm by July 22, and a tropical depression the next day. Its remnants moved ashore on the Big Island of Hawaii with no significant effects.[7]


The track of Hurricane Keoni

In the central Pacific, Tropical Depression One-C formed to the southeast of Hawaii on August 9, and was named Keoni on August 12. Gaining strength, Keoni moved towards the northwest. It passed to the south of Johnston Atoll at peak intensity, though after doing so, it slowed in forward speed and weakened slightly. On August 19, the storm crossed the International Date Line and became a typhoon in the western Pacific.[8]

The next storm, Hurricane Fernanda, formed from a tropical wave that moved off the west African coast on July 28 and crossed into the eastern Pacific. The developing system reached tropical storm status on August 9 while located 635 mi (1,022 km) south of the southern tip of Baja, and it strengthened into a hurricane the next day. Fernanda developed a large and well-defined eye, reaching its peak intensity with winds of 145 mph (235 km/h) on July 12. Fernanda eventually crossed into the central Pacific on July 14, and passed to the northeast of Hawaii as a Category 2 hurricane on July 16. Fernanda later began to gradually curve northwestward on July 16 under the influence of an upper-level trough after approaching the Hawaiian Islands, becoming extratropical on July 19.[8][9]

Hurricane Hillary on August 25

In the Atlantic, Tropical Storm Bret made landfall in Nicaragua; its remnants emerged into the Pacific on August 11. Bret was considered fully dissipated as a tropical cyclone, and only residual thunderstorm activity could be detected. The convection began to organize, and the system was designated a tropical depression early on August 15. Tracking northwestward, it was named Greg later that day. Greg became a hurricane on August 16, and later executed a turn to the west. Greg lasted until August 28, having peaked at Category 4 intensity.[10][11]

A tropical wave entered the Pacific on August 14, triggering multiple small bursts of convention. The system progressed west, and spawned a tropical depression on August 17. On August 18, the system became Tropical Storm Hilary, while situated 120 mi (190 km) to the south of Huatulco. Hillary intensified as it paralleled the southwestern coast of Mexico, and it was upgraded to a hurricane on August 19. After reaching wind speeds of 120 mph (190 km/h), Hilary weakened and made two landfalls on the Baja California peninsula. It degenerated on August 27.[12][13]

Tropical Storm Irwin formed as a tropical depression on August 21, and six hours later the depression attained tropical storm status. Irwin approached hurricane status as it paralleled the coast. On August 22, it was absorbed into the larger Hurricane Hilary.[14]

September and October[edit]

Storm names[edit]

The following names were used for named storms that formed in the eastern Pacific in 1993; names that were not assigned are marked in gray. No names were retired, so it was used again in the 1999 season. This is the same list used for the 1987 season except for Knut, which was replaced with Kenneth. A storm was named Kenneth for the first time in 1993.

  • Adrian
  • Beatriz
  • Calvin
  • Dora
  • Eugene
  • Fernanda
  • Greg
  • Hilary
  • Irwin
  • Jova
  • Kenneth
  • Lidia
  • Max
  • Norma
  • Otis (unused)
  • Pilar (unused)
  • Ramon (unused)
  • Selma (unused)
  • Todd (unused)
  • Veronica (unused)
  • Wiley (unused)
  • Xina (unused)
  • York (unused)
  • Zelda (unused)

See also[edit]


External links[edit]