1971 Pacific hurricane season

Last updated
1971 Pacific hurricane season
1971 Pacific hurricane season summary map.png
Season summary map
Seasonal boundaries
First system formed May 21, 1971
Last system dissipated November 29, 1971
Strongest storm
Name Olivia
  Maximum winds 115 mph (185 km/h)
(1-minute sustained)
  Lowest pressure 948 mbar (hPa; 27.99 inHg)
Seasonal statistics
Total depressions 22
Total storms 18
Hurricanes 12
Major hurricanes
(Cat. 3+)
6
Total fatalities 31 total
Total damage $40 million (1971 USD)
Related articles
Pacific hurricane seasons
1969, 1970, 1971, 1972, 1973

The 1971 Pacific hurricane season began on May 15, 1971, in the east Pacific, and on June 1, 1971, in the central Pacific. It ended on November 30, 1971. These dates conventionally delimit the period of time when tropical cyclones form in the east Pacific Ocean.

Pacific Ocean Ocean between Asia and Australia in the west, the Americas in the east and Antarctica or the Southern Ocean in the south.

The Pacific Ocean is the largest and deepest of Earth's oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean in the south and is bounded by Asia and Australia in the west and the Americas in the east.

Tropical cyclone Rapidly rotating storm system

A tropical cyclone is a rapidly rotating storm system characterized by a low-pressure center, a closed low-level atmospheric circulation, strong winds, and a spiral arrangement of thunderstorms that produce heavy rain. Depending on its location and strength, a tropical cyclone is referred to by different names, including hurricane, typhoon, tropical storm, cyclonic storm, tropical depression, and simply cyclone. A hurricane is a tropical cyclone that occurs in the Atlantic Ocean and northeastern Pacific Ocean, and a typhoon occurs in the northwestern Pacific Ocean; while in the south Pacific or Indian Ocean, comparable storms are referred to simply as "tropical cyclones" or "severe cyclonic storms".

Contents

The 1971 season was above average with 18 named storms. Twelve hurricanes formed, of which six became major hurricanes by reaching Category 3 or higher on the Saffir-Simpson Hurricane Scale. At the time, this was a record number of storms. This season had six landfalls (Agatha, Bridget, Katrina, Lily, Olivia and Priscilla), the highest number of landfalling Pacific tropical cyclones in one season.

Hurricane Lily (1971) Category 1 Pacific hurricane in 1971

Hurricane Lily was a short-lived Category 1 hurricane of August 1971 that devastated the city of Puerto Vallarta in Mexico. Forming from an area of cloudiness associated with former Atlantic Tropical Storm Chloe, the storm slowly intensified, building to peak intensity just before landfall northwest of Manzanillo, Colima on August 31. The hurricane quickly weakened and became extratropical. After leaving land, the extratropical remnants of Lily dissipated on September 1. The storm's movement close to land affected shipping due to the limited warning, which was partially set back due to difficulties in clarifying the hurricane's position on radar from reconnaissance aircraft.

Hurricane Irene–Olivia Category 3 Atlantic and Pacific hurricane in 1971

Hurricane Irene–Olivia was the first actively tracked tropical cyclone to move into the eastern Pacific Ocean from the Atlantic basin. It originated as a tropical depression on September 11, 1971, in the tropical Atlantic. The cyclone tracked nearly due westward at a low latitude, passing through the southern Windward Islands and later over northern South America. In the southwest Caribbean Sea, it intensified to a tropical storm and later a hurricane. Irene made landfall on southeastern Nicaragua on September 19, and maintained its circulation as it crossed the low-lying terrain of the country. Restrengthening after reaching the Pacific, Irene was renamed Hurricane Olivia, which ultimately attained peak winds of 115 mph (185 km/h). Olivia weakened significantly before moving ashore on the Baja California Peninsula on September 30; the next day it dissipated.

Systems

Hurricane Irene-OliviaHurricane Lily (1971)Hurricane Bridget (1971)Saffir–Simpson Hurricane Scale1971 Pacific hurricane season

Hurricane Agatha

Category 2 hurricane (SSHWS)
AgathaMay231971NOAA1.png   Agatha 1971 track.png
Duration May 21 – May 25
Peak intensity 100 mph (155 km/h) (1-min) ≤ 972  mbar  (hPa)

On May 21, an area of low pressure developed in the very warm waters south of Tehuantepec, Mexico. Later that day, satellite images showed increasing circulation and Tropical Storm Agatha developed shortly after. Agatha continued moving to the west-northwest parallel to the Mexican coastline and strengthened into a hurricane on May 22. A U.S. Air Force weather reconnaissance aircraft flew into Agatha and found an eye and strong bands. The next day, a reconnaissance plane found winds of 85 to 90 mph (140 to 150 km/h). On May 24, a ship reported winds of 100 mph (160 km/h). Agatha made landfall as a Category 2 hurricane on the Saffir-Simpson hurricane scale within 45 mi (75 km) of Zihuatanejo, Mexico.

South one of the four cardinal directions

South is one of the four cardinal directions or compass points. South is the opposite of north and is perpendicular to the east and west.

Tehuantepec City & Municipality in Oaxaca, Mexico

Tehuantepec is a city and municipality in the southeast of the Mexican state of Oaxaca. It is part of the Tehuantepec District in the west of the Istmo Region. The area was important in pre Hispanic period as part of a trade route that connected Central America with what is now the center of Mexico. Later it became a secondary capital of the Zapotec dominion, before it was conquered by the Spanish in the early 16th century.

Mexico country in the southern portion of North America

Mexico, officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatemala, Belize, and the Caribbean Sea; and to the east by the Gulf of Mexico. Covering almost 2,000,000 square kilometres (770,000 sq mi), the nation is the fifth largest country in the Americas by total area and the 13th largest independent state in the world. With an estimated population of over 120 million people, the country is the eleventh most populous state and the most populous Spanish-speaking state in the world, while being the second most populous nation in Latin America after Brazil. Mexico is a federation comprising 31 states and Mexico City, a special federal entity that is also the capital city and its most populous city. Other metropolises in the state include Guadalajara, Monterrey, Puebla, Toluca, Tijuana and León.

The village of Playa Azul was hard hit by the storm. Up to half of the village's homes were destroyed. Also, much of the banana, mango, and coconut crop was destroyed.

Banana edible fruit

A banana is an edible fruit – botanically a berry – produced by several kinds of large herbaceous flowering plants in the genus Musa. In some countries, bananas used for cooking may be called "plantains", distinguishing them from dessert bananas. The fruit is variable in size, color, and firmness, but is usually elongated and curved, with soft flesh rich in starch covered with a rind, which may be green, yellow, red, purple, or brown when ripe. The fruits grow in clusters hanging from the top of the plant. Almost all modern edible seedless (parthenocarp) bananas come from two wild species – Musa acuminata and Musa balbisiana. The scientific names of most cultivated bananas are Musa acuminata, Musa balbisiana, and Musa × paradisiaca for the hybrid Musa acuminata × M. balbisiana, depending on their genomic constitution. The old scientific name Musa sapientum is no longer used.

Mango fruit, use Q3919027 for the species; Q161807 for the genus

Mangoes are juicy stone fruit (drupe) from numerous species of tropical trees belonging to the flowering plant genus Mangifera, cultivated mostly for their edible fruit.

Coconut species of plant

The coconut tree is a member of the palm tree family (Arecaceae) and the only living species of the genus Cocos. The term "coconut" can refer to the whole coconut palm, the seed, or the fruit, which botanically is a drupe, not a nut. The term is derived from the 16th-century Portuguese and Spanish word coco meaning "head" or "skull" after the three indentations on the coconut shell that resemble facial features.

Hurricane Bridget

Category 2 hurricane (SSHWS)
BridgetJune161971NOAA1.png   Bridget 1971 track.png
Duration June 14 – June 20
Peak intensity 100 mph (155 km/h) (1-min)  998  mbar  (hPa)

A tropical disturbance near El Salvador remained unorganized until June 12. The area of convection started to drift west-northwestward and strengthened into Tropical Depression Two-E. On June 15, the Tropical Depression further intensified into Tropical storm status and was named Bridget, the second tropical storm of the season. Tropical Storm Bridget moved across the Gulf of Tehuantepec which was favorable for Development. On June 16, Bridget continued intensifying and satellite imagery and ship report data confirmed that Bridget had strengthened into a hurricane. Hurricane Bridget continued moving west-northwest along the west coast of Mexico and came within 35 to 45 mi (55 to 75 km) of Acapulco on June 17. Bridget later made landfall as a Tropical Storm about 100 mi (155 km) southeast of Manzanillo, Mexico. However, the Tropical Depression Re-entered open waters and dissipated on June 20.

El Salvador country in Central America

El Salvador, officially the Republic of El Salvador, is the smallest and the most densely populated country in Central America. It is bordered on the northeast by Honduras, on the northwest by Guatemala, and on the south by the Pacific Ocean. El Salvador's capital and largest city is San Salvador. As of 2016, the country had a population of approximately 6.34 million.

Gulf of Tehuantepec

Gulf of Tehuantepec is a large body of water on the Pacific coast of the Isthmus of Tehuantepec, southeastern Mexico, at 16°N95°W. Many Pacific hurricanes form in or near this body of water. A strong, gale-force wind called the Tehuano periodically blows out over the waters of the Gulf of Tehuantepec, inducing strong upwelling of nutrient-rich waters which support abundant sea life.

Acapulco City and municipality in Guerrero, Mexico

Acapulco de Juárez, commonly called Acapulco, is a city, municipality and major seaport in the state of Guerrero on the Pacific coast of Mexico, 380 kilometres (240 mi) south of Mexico City. Acapulco is located on a deep, semicircular bay and has been a port since the early colonial period of Mexico's history. It is a port of call for shipping and cruise lines running between Panama and San Francisco, California, United States. The city of Acapulco is the largest in the state, far larger than the state capital Chilpancingo. Acapulco is also Mexico's largest beach and balneario resort city.

Bridget was the worst hurricane to hit Acapulco in over 25 years; the last strong hurricane to impact Acapulco to a greater extent was the 1943 Mazatlan Hurricane, which made landfall as a Category 3 hurricane and caused $56 million (1971 USD; $338 million2018 USD) in damage. Hurricane Bridget's storm surge caused flooding in the bay and damaged waterfront and beach facilities. Rough weather and violent seas also sank 20 boats plus a flagship of the Mexican Navy.

A storm surge, storm flood, tidal surge or storm tide is a coastal flood or tsunami-like phenomenon of rising water commonly associated with low pressure weather systems, the severity of which is affected by the shallowness and orientation of the water body relative to storm path, as well as the timing of tides. Most casualties during tropical cyclones occur as the result of storm surges. It is a measure of the rise of water beyond what would be expected by the normal movement related to tides.

Mexican Navy one of the independent Armed Forces of Mexico

The Mexican Navy is one of the two independent armed forces of Mexico. The actual naval forces are called the Armada de México. The Secretaría de Marina (SEMAR) includes both the Armada itself and the attached ministerial and civil service. The commander of the Navy is the Secretary of the Navy, who is both a cabinet minister and a career naval officer.

Hurricane Carlotta

Category 1 hurricane (SSHWS)
Carlotta (1971).jpg   Carlotta 1971 track.png
Duration July 2 – July 8
Peak intensity 85 mph (140 km/h) (1-min) ≤ 980  mbar  (hPa)

On July 1 an area of weather developed about 115 mi (185 km) east of Clipperton Island. On July 2 the area of thunderstorms strengthened into Tropical Storm Carlotta. An Air Force reconnaissance aircraft flew into Carlotta on July 4 and found a system with a well-defined eye and good outflow, but winds only supported a tropical storm. Another reconnaissance plane found winds that were near hurricane strength on July 4. In post-season analysis, it was discovered that Carlotta was a hurricane for 24 hours on July 3 and 4. Later that day, Carlotta started weakening after moving into a less favorable environment. The storm continued to weaken until dissipating on July 8.

Carlotta stayed over open waters during its entire life and no land was affected.

Hurricane Denise

Category 4 hurricane (SSHWS)
DeniseJuly719712317UTCESSA9.png   Denise 1971 track.png
Duration July 2 – July 14
Peak intensity 140 mph (220 km/h) (1-min) ≤ 951  mbar  (hPa)

On July 2 an area of weather got better organized about 865 mi (1390 km) east of then Tropical Storm Carlotta. On July 4 satellite imagery indicated that the system had strengthened into Tropical Storm Denise and later into Hurricane Denise on July 6. The system continued to move west and on July 7, U.S. Air Force weather reconnaissance plane found a more organized system with sustained winds estimated to be 90 mph (150 km/h) with a minimum central pressure of 963  mbar (hPa; 28.4  inHg). By July 8, the system had sustained one-minute winds of 125 mph (205 km/h) and a minimum central pressure of 951 mbar (hPa; 28.1 inHg). Denise reached a peak intensity of 140 mph (220 km/h), a Category 4 on the Saffir-Simpson Hurricane Scale early on July 9, but then started to weaken.

Denise had started a northwest movement towards Hawaii. A reconnaissance aircraft found surface winds of approximately 115 mph (185 mph) on July 9. Soon after, the eyewall started to dissipate, most likely because of cooler inflow. Over the next 48 hours, the system continued to weaken into a tropical storm. On July 13 the system was approaching the Hawaiian Islands, but a reconnaissance flight only found winds that were barely tropical storm strength. What was left of the storm quickly weakened and Denise became a remnant low.

The remnants of Denise moved south of the Hawaiian Islands, but still brought beneficial rains that caused some minor flooding. [1]

Tropical Storm Eleanor

Tropical storm (SSHWS)
EleanorJuly919712319UTCESSA9.png   Eleanor 1971 track.png
Duration July 7 – July 11
Peak intensity 60 mph (95 km/h) (1-min) ≤ 1007  mbar  (hPa)

Eleanor was a short-lived, weak tropical storm that stayed well out to sea. On July 7, a tropical depression formed east-southeast of the weakening Carlotta and west of the strengthening Denise. By July 8, satellite imagery showed that the depression had strengthened into a tropical storm. Eleanor strengthened over the next 24 hours to a top strength of 60 mph (95 km/h). On July 10, a U.S. Air Force weather reconnaissance plane found a weakening system and the next day the storm was a dissipating depression moving toward the west-southwest.

Hurricane Francene

Category 3 hurricane (SSHWS)
Francene (1971).png   Francene 1971 track.png
Duration July 18 – July 23
Peak intensity 115 mph (185 km/h) (1-min) ≤ 991  mbar  (hPa)

An area of enhanced shower activity and low pressure circulation developed a couple hundred miles off the coast of Mexico. On July 18 a tropical depression had formed and on July 19 the system strengthened into Tropical Storm Francene. Francene underwent rapid deepening into a Category 3 hurricane on the Saffir-Simpson Hurricane Scale. However, because of Francene's increasing size, the storm starting pulling in cool surface air which caused weakening. By July 20, Francene had weakened into a tropical storm. Francene continued to weaken over the next 24 hours and was barely a tropical storm by the morning of July 22. That afternoon, Francene began to strengthen once again but it was short-lived. By July 23, the surface circulation had disappeared and Francene was no longer a tropical cyclone. Francene stayed over open water and did not affect land.

Tropical Storm Georgette

Tropical storm (SSHWS)
GeorgetteJuly2419712242UTCESSA9.gif   Georgette 1971 track.png
Duration July 20 – July 27
Peak intensity 60 mph (95 km/h) (1-min)  990  mbar  (hPa)

A tropical depression formed to the east of Hurricane Francene on July 20. A reconnaissance flight found a poorly organized tropical storm with winds of 50 mph (80 km/h) on July 23. Georgette reached a peak intensity of 60 mph (97 km/h) the next day. Ships to the north of Georgette reported weak tropical storm force winds. By July 26 the storm began to weaken rapidly before dissipating the next day.

Hurricane Hilary

Category 2 hurricane (SSHWS)
HilaryAugust119712250UTCESSA9.gif   Hilary 1971 track.png
Duration July 26 – August 7
Peak intensity 100 mph (155 km/h) (1-min) ≤ 964  mbar  (hPa)

Tropical Storm Hilary developed about 115 mi (185 km) west of Clipperton Island on July 26. Hilary strengthened quickly into a hurricane by July 28 and a recon plane found surface winds of 90 mph (140 km/h) and noted a well-defined eye. The hurricane would peak as a category 2 with sustained winds of 100 mph (160 km/h) on July 30. [2] Hilary weakened slightly as its motion became erratic across the tropical Pacific Ocean. By August 1 the hurricane turned to the northwest towards cooler waters. Hilary weakened into a tropical storm on August 3 after being at hurricane strength for a week. [2] Steady weakening continued over the next four days before dissipating in the Central Pacific.

Hurricane Ilsa

Category 3 hurricane (SSHWS)
IlsaAugust119712054UTCESSA9.gif   Ilsa 1971 track.png
Duration July 31 – August 8
Peak intensity 115 mph (185 km/h) (1-min) ≤ 978  mbar  (hPa)

Hurricane Ilsa formed on July 31 to the south of the Mexican coast. It gradually strengthened into a tropical storm and a hurricane. Ilsa peaked as a Category 3 hurricane before heading further out to sea and weakening. Hurricane Ilsa dissipated on August 8.

Tropical Storm Jewel

Tropical storm (SSHWS)
JewellAug1019712202UTCESSA9.gif   Jewel 1971 track.png
Duration August 6 – August 11
Peak intensity 70 mph (110 km/h) (1-min)  993  mbar  (hPa)

Tropical Storm Jewel formed near Mexico on August 6. Heading out to sea, it strengthened into a 70 mph (112.63 km/h) tropical storm. It dissipated on August 11.

Tropical Storm Katrina

Tropical storm (SSHWS)
KatrinaAug1019712202UTCESSA9.gif   Katrina 1971 track.png
Duration August 8 – August 13
Peak intensity 65 mph (100 km/h) (1-min)  1008  mbar  (hPa)

Katrina was a very small storm. Katrina brushed Baja California Sur and made landfall in the Mexican state of Sonora as a tropical storm. It dissipated on August 13. Rain from Katrina's remnants ruined crops, destroyed railroad trestles, and washed away three bridges.

Hurricane Lily

Category 1 hurricane (SSHWS)
LilyAug3119712125UTCESSA9.gif   Lily 1971 track.png
Duration August 28 – September 1
Peak intensity 85 mph (140 km/h) (1-min)  978  mbar  (hPa)

The remnants of Tropical Storm Chloe in the Atlantic formed into Tropical Depression Twelve on August 28. Twelve continued northeast and intensified into a tropical storm and was thus assigned the name Lily. Lily turned north-northwest.Rapid intensification occurred and Lily developed an eye. Lily peaked with one-minute sustained winds of 85 mph and a pressure of 978mb. Lily made landfall soon after. Once over land, Lily fell below tropical storm intensity. Then the hurricane turned northwest and dissipated soon after.

Hurricane Monica

Category 3 hurricane (SSHWS)
Monica1971sep20008z.gif   Monica 1971 track.png
Duration August 29 – September 5
Peak intensity 115 mph (185 km/h) (1-min) ≤ 1005  mbar  (hPa)

Monica was a Category 3 hurricane which did not affect land.

Hurricane Nanette

Category 2 hurricane (SSHWS)
NanetteSep619712131UTCESSA9.gif   Nanette 1971 track.png
Duration September 3 – September 9
Peak intensity 100 mph (155 km/h) (1-min) ≤ 984  mbar  (hPa)

Hurricane Nanette threatened southern Baja California but turned west before making landfall.

Hurricane Olivia

Category 3 hurricane (SSHWS)
OliviaSep2519712053UTCESSA9.gif   Olivia 1971 track.png
Duration September 20 (Entered basin) – October 1
Peak intensity 115 mph (185 km/h) (1-min)  948  mbar  (hPa)

Olivia was a continuation of Atlantic Hurricane Irene. Olivia eventually strengthened into a Category 3 hurricane before recurving and making landfall in Baja California as a depression. The remnants of Olivia continued north into California, where they brought rain.

Hurricane Priscilla

Category 3 hurricane (SSHWS)
PriscillaOct919712108UTC.gif   Priscilla 1971 track.png
Duration October 6 – October 13
Peak intensity 125 mph (205 km/h) (1-min)  951  mbar  (hPa)

Priscilla made landfall south of Mazatlán as a tropical storm. It had weakened significantly before landfall, having once been a strong Category 3 hurricane. Priscilla destroyed roughly 36,000 acres of corn, tomatoes, peppers, bananas, and cotton, resulting in $3.12 million in losses. Heavy rains inundated 30 towns in Nayarit, damaging roads and two major thoroughfares; road damage totaled $544,000. [3]

Tropical Storm Ramona

Tropical storm (SSHWS)
RamonaOct2919712129UTCESSA9.gif   Ramona 1971 track.png
Duration October 28 – October 31
Peak intensity 60 mph (95 km/h) (1-min)  1009  mbar  (hPa)

Ramona formed on October 28, it quickly strengthened into a tropical storm. It later weakened back to a tropical depression. Before dissipation, it made a sharp turn to the north-northeast. It had dissipated on October 31.

Tropical Storm Sharon

Tropical storm (SSHWS)
SharonNov2619712154UTC.gif   Sharon 1971 track.png
Duration November 25 – November 29
Peak intensity 40 mph (65 km/h) (1-min) ≤ 1009  mbar  (hPa)

Tropical Storm Sharon was a late season tropical storm that formed a few hundred miles from Mexico on November 25. It slowly strengthened into a minimal tropical storm before unfavorable conditions caused it to dissipated on November 29.

Storm names

These names were used for storms that formed in 1971. It is the same list used in the 1967 season. A storm was named Sharon for the first time this year. No names were retired, so it was used again in the 1975 season.

  • Agatha
  • Bridget
  • Carlotta
  • Denise
  • Eleanor
  • Francene
  • Georgette
  • Hilary
  • Ilsa
  • Jewel
  • Katrina
  • Lily
  • Monica
  • Nanette
  • Olivia
  • Priscilla
  • Ramona
  • Sharon
  • Terry (unused)
  • Veronica (unused)
  • Winifred (unused)

The central Pacific used names and numbers from the west Pacific's typhoon name list. No storms formed in the region, and thus no names were used. However, tropical disturbances that later became typhoons started forming in this area.

Season effects

This is a table of all of the storms in the 1973 Pacific hurricane season. It includes their durations, peak intensities, names, landfall(s), damages, and death totals. Deaths in parentheses are additional and indirect (an example of an indirect death would be a traffic accident), but are still storm-related. Damage and deaths include totals while the storm was extratropical or a wave or a low.

Saffir–Simpson scale
TDTSC1C2C3C4C5
1973 Pacific hurricane season statistics
Storm
name
Dates activeStorm category

at peak intensity

Max 1-min
wind
mph (km/h)
Min.
press.
(mbar)
Areas affectedDamage
(USD)
DeathsRefs
AgathaMay 21 – 25Category 2 hurricane100 (155)972 Mexico Unknown0
Bridget June 14 – 20Category 2 hurricane100 (155)998 Mexico 5617
CarlottaJuly 2 – 8Category 1 hurricane85 (140)980NoneNone0
DeniseJuly 2 – 14Category 4 hurricane140 (220)951 Hawaii None0
EleanorJuly 7 – 11Tropical storm60 (95)1007NoneNone0
FranceneJuly 18 – 23Category 3 hurricane115 (185)991NoneNone0
GeorgetteJuly 20 – 27Category 1 hurricane60 (95)990NoneNone0
HilaryJuly 26 – August 7Category 2 hurricane100 (155)964NoneNone0
IlsaJuly 31 – August 8Category 3 hurricane115 (185)978NoneNone0
JewelAugust 6 – 11Tropical storm70 (110)993NoneNone0
KatrinaAugust 8 – 13Tropical storm65 (100)1008 Mexico Unknown0
Lily August 28 – September 1Category 1 hurricane85 (140)978 Mexico Unknown12-14
MonicaAugust 29 – September 5Category 3 hurricane115 (185)1005NoneNone0
NanetteSeptember 3 – 9Category 2 hurricane100 (155)984 Mexico None0
Olivia September 20 – October 1Category 3 hurricane115 (185)948 Nicaragua, Mexico Unknown3
PriscillaOctober 6 – 13Category 3 hurricane125 (205)951 Mexico 3.6640
RamonaOctober 28 – 31Tropical storm60 (95)1009NoneNone0
SharonNovember 25 – 29Tropical storm40 (65)1009NoneNone0
Season Aggregates
22 [nb 1] systemsMay 21 – November 29 140 (220)948 Mexico, Nicaragua Unknown52 

See also

Notes

  1. There were four other tropical cyclones which never reached tropical storm strength, but due to the unavailability of their data they are not added onto this table.

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The 1986 Pacific hurricane season saw several tropical cyclones contribute to significant flooding to the Central United States. The hurricane season officially started May 15, 1986, in the eastern Pacific, and June 1, 1986 in the central Pacific, and lasted until November 30, 1986 in both regions. These dates conventionally delimit the period of each year when most tropical cyclones form in the northeastern Pacific Ocean. A total of 17 named storms and 9 hurricanes developed during the season; this is slightly above the averages of 15 named storms and 8 hurricanes, respectively. In addition, 26 tropical depressions formed in the eastern Pacific during 1986, which, at the time, was the second most ever recorded; only the 1982 Pacific hurricane season saw a higher total.

1985 Pacific hurricane season hurricane season in the Pacific Ocean

The 1985 Pacific hurricane season is the third-most active Pacific hurricane season on record. It officially started on May 15, 1985, in the eastern Pacific, and on June 1, 1985, in the central Pacific, and lasted until November 30, 1985. These dates conventionally delimit the period of each year when most tropical cyclones form in the northeastern Pacific Ocean. At the time, the 1985 season was the most active on record in the eastern north Pacific, with 28 tropical cyclones forming. Of those, 24 were named, 13 reached hurricane intensity, and 8 became major hurricanes by attaining Category 3 status or higher on the Saffir-Simpson Hurricane Scale. At that time, the 24 named storms was a record; however, this record was broken seven years later in 1992, and was therefore recognized as the second busiest season within the basin, until it was surpassed exactly thirty years later by the 2015 season.

1984 Pacific hurricane season hurricane season in the Pacific Ocean

The 1984 Pacific hurricane season was a very active season, producing 21 named storms. When Fausto became a tropical storm on July 3, it was the earliest the sixth named storm was named. This record would be tied in 1985 and broken 34 years later. The season produced 26 tropical cyclones, of which 21 developed into named storms; 13 cyclones attained hurricane status, of which three reached major hurricane status. The season officially started on May 15, 1984, in the eastern Pacific, and June 1, 1984, in the central Pacific, and lasted until November 30, 1984. These dates conventionally delimit the period of each year when the vast majority tropical cyclones form in the northeastern Pacific Ocean. The strongest hurricane of the season was Hurricane Douglas, which attained Category 4 status on the Saffir-Simpson Hurricane Scale in the open Pacific.

1979 Pacific hurricane season hurricane season in the Pacific Ocean

The 1979 Pacific hurricane season was an inactive Pacific hurricane season. It officially started on May 15, 1979, in the eastern Pacific, and June 1, 1979, in the central Pacific, and lasted until November 30, 1979. These dates conventionally delimit the period of each year when most tropical cyclones form in the northeast Pacific Ocean.

1975 Pacific hurricane season hurricane season in the Pacific Ocean

The 1975 Pacific hurricane season officially started May 15, 1975, in the eastern Pacific, and June 1, 1975, in the central Pacific, and lasted until November 30, 1975. These dates conventionally delimit the period of each year when most tropical cyclones form in the northeast Pacific Ocean.

1978 Pacific hurricane season hurricane season in the Pacific Ocean

The 1978 Pacific hurricane season officially began May 15, 1978, in the eastern Pacific, June 1, 1978, in the central Pacific, and officially ended on November 30, 1978. These dates conventionally delimit the period of time when tropical cyclones form in the eastern north Pacific Ocean.

1970 Pacific hurricane season hurricane season in the Pacific Ocean

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.

1964 Pacific typhoon season typhoon season in the Pacific Ocean

The 1964 Pacific typhoon season was the most active tropical cyclone season recorded globally, with a total of 40 tropical storms forming. It had no official bounds; it ran year-round in 1964, 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.

1968 Pacific hurricane season hurricane season in the Pacific Ocean

The 1968 Pacific hurricane season ties the record for having the most active August in terms of tropical storms. It officially started on May 15, 1968, in the eastern Pacific and June 1 in the central Pacific and lasted until November 30, 1968. These dates conventionally delimit the period of each year when most tropical cyclones form in the northeastern Pacific Ocean.

2012 Pacific hurricane season hurricane season in the Pacific Ocean

The 2012 Pacific hurricane season was a moderately active Pacific hurricane season that saw an unusually high number of tropical cyclones pass west of the Baja California Peninsula. 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 the northeastern Pacific Ocean. However, with the formation of Tropical Storm Aletta on May 14 the season slightly exceeded these bounds.

1967 Pacific hurricane season hurricane season in the Pacific Ocean

The 1967 Pacific hurricane season started on June 1 and ended on November 30, 1967. The season was of little note except for Hurricanes Katrina and Olivia. Katrina made landfall on the Baja Peninsula, killing at least 60 and made 2,500 homeless. Olivia made landfall on the eastern side of the Baja Peninsula as a major hurricane—only one of two storms ever to do so. Hurricane/Typhoon Sarah formed in the Central Pacific and reached category 1 strength before crossing over to the Western Pacific.

Timeline of the 1997 Pacific hurricane season

The 1997 Pacific hurricane season was the most active season since the 1994 season, producing 24 tropical depressions, 19 of which became tropical storms or hurricanes. The season officially started on May 15, 1997 in the Eastern Pacific—designated as the area east of 140°W—and on June 1, 1997 in the Central Pacific, which is between the International Date Line and 140°W. The season officially ended in both basins on November 30, 1997. These dates typically limit the period of each year when most tropical cyclones form in the eastern Pacific basin. This timeline documents all the storm formations, strengthening, weakening, landfalls, extratropical transitions, as well as dissipation. The timeline also includes information which was not operationally released, meaning that information from post-storm reviews by the National Hurricane Center, such as information on a storm that was not operationally warned on, has been included.

References

  1. "The 1971 Central Pacific Tropical Cyclone Season". CPHC. 1971. Retrieved 2007-08-22.
  2. 1 2 "Hurricane Hilary track data". Unisys. Archived from the original on 24 July 2008. Retrieved 2008-07-31.
  3. "Storm Damages Mexican Crops". The Corpus Christi Times. 62 (75). Corpus Christi, Texas. Associated Press. October 15, 1971. p. 1D. Retrieved July 26, 2015 via Newspapers.com. Open Access logo PLoS transparent.svg