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 cyclone
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 and squalls. Depend ...
s form in the northeast
Pacific Ocean
The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continen ...
.
The 1975 Pacific hurricane season was slightly above average, with 17 tropical storms forming. Of these, 9 became hurricanes, and 4 became major hurricanes by reaching Category 3 or higher on the Saffir-Simpson Hurricane Scale. The only notable storms are Hurricane Olivia, which killed 30 people, caused $30 million (1975 USD) in damage, and left thousands homeless when it made landfall in October; and an unnamed hurricane that developed at very high latitude, but had no effect on land. Hurricane Denise was the strongest storm of the year. Hurricanes Lily and Katrina passed close to
Socorro Island
Socorro Island ( es, Isla Socorro) is a small volcanic island in the Revillagigedo Islands, a Mexican possession lying off the country's western coast. The size is 16.5 by 11.5 km (10.25 by 7.15 miles), with an area of . It is the largest ...
and Tropical Storm Eleanor made landfall in
Mexico
Mexico (Spanish: México), 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 Guatema ...
The season began with the formation of Tropical Depression One on June 2 and ended with the extratropical transition of Tropical Storm Priscilla on November 7. No named systems formed in May, two in June, four in July, six in August, three in September, one in October, and one in November. The total length of the season, from the formation of the first depression to the dissipation of the last, was 158 days.
In the eastern Pacific proper (east of 140°W), sixteen tropical storms and eight hurricanes formed. Four of the hurricanes became major hurricanes by reaching Category 3 or higher on the Saffir-Simpson Hurricane Scale. These numbers are close to the long-term averages of fifteen tropical storms, nine hurricanes, and four major hurricanes. There were also four unnamed tropical depressions. The only system to enter or form in the central Pacific (between 140°W and the
international dateline
The International Date Line (IDL) is an internationally accepted demarcation on the surface of Earth, running between the South and North Poles and serving as the boundary between one calendar day and the next. It passes through the Pacific O ...
) was an unusual high-latitude
hurricane
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 and squalls. Depend ...
.
The only systems to make landfall this year were Tropical Storm Eleanor and Hurricane Olivia. Besides these two systems, Hurricane Agatha caused the sinking of a ship carrying millions of dollars worth of cargo. Tropical Storm Eleanor caused no serious impact.
The most devastating storm of the season was Hurricane Olivia. A late-season major hurricane, Olivia came ashore near
Mazatlán
Mazatlán () is a city in the Mexican state of Sinaloa. The city serves as the municipal seat for the surrounding ''municipio'', known as the Mazatlán Municipality. It is located at on the Pacific coast, across from the southernmost tip of ...
. The storm killed 30 people, left around 30,000 people homeless, and caused 20 million dollars (1975
USD
The United States dollar (symbol: $; code: USD; also abbreviated US$ or U.S. Dollar, to distinguish it from other dollar-denominated currencies; referred to as the dollar, U.S. dollar, American dollar, or colloquially buck) is the official ...
) in damage.
Systems
Hurricane Agatha
An area of disturbed weather about southwest of
Acapulco
Acapulco de Juárez (), commonly called Acapulco ( , also , nah, Acapolco), is a city and major seaport in the state of Guerrero on the Pacific Coast of Mexico, south of Mexico City. Acapulco is located on a deep, semicircular bay and has bee ...
formed on June 1. It organized into a tropical depression the next day. After heading southwestward, it turned to the northwest and strengthened into Tropical Storm Agatha on June 2. Agatha maintained its course and steadily intensified. It reached hurricane intensity on June 3 while located about southwest of
Zihuatanejo
Zihuatanejo (), or Ixtapa-Zihuatanejo, is the fourth-largest city in the Mexican state of Guerrero. It was known by 18th century English mariners as Chequetan or Seguataneo. Politically the city belongs to the municipalities of Mexico, municipali ...
. Hurricane Agatha started weakening thereafter, becoming a tropical storm on June 4 and a depression on June 5. It dissipated shortly afterwards. At this time, Agatha was located about south of the
Tres Marias Islands
Tres may refer to:
* Tres (instrument), a Cuban musical instrument
* Tres, Trentino, municipality in Italy
* "Tres" (song) by Juanes
* "Tres", a song by Líbido from their album ''Hembra''
* TrES, the ''Trans-Atlantic Exoplanet Survey''
* Templi R ...
.
Even though Agatha passed close to Mexico as it weakened, no impact is known to have been caused. Waves caused by Agatha did impact a ship called the ''Polynesian Diakan''. A Greek freighter en route from
Pago Pago
Pago Pago ( ; Samoan: )Harris, Ann G. and Esther Tuttle (2004). ''Geology of National Parks''. Kendall Hunt. Page 604. . is the territorial capital of American Samoa. It is in Maoputasi County on Tutuila, which is American Samoa's main island. ...
to
Terminal Island, California
Terminal Island, historically known as Isla Raza de Buena Gente, is a largely artificial island located in Los Angeles County, California, between the neighborhoods of Wilmington, Los Angeles, Wilmington and San Pedro, Los Angeles, San Pedro in t ...
, the ''Polynesian Diakan'' began flooding on June 3, forcing the 32-man crew to abandon the vessel. The exact cause of the initial flooding was unknown, but was speculated to be primarily due to cargo shifting and not the weather. The crew was rescued by the
United States Coast Guard
The United States Coast Guard (USCG) is the maritime security, search and rescue, and law enforcement service branch of the United States Armed Forces and one of the country's eight uniformed services. The service is a maritime, military, mult ...
. Three members required hospitalization. After being reached on June 6 by a tugboat in a salvage attempt, the vessel capsized and sank near
San Clemente Island
San Clemente Island (Tongva: ''Kinkipar''; Spanish: ''Isla de San Clemente'') is the southernmost of the Channel Islands of California. It is owned and operated by the United States Navy, and is a part of Los Angeles County. It is administered b ...
on June 7, taking its multimillion-dollar cargo of 71 containers of canned
tuna
A tuna is a saltwater fish that belongs to the tribe Thunnini, a subgrouping of the Scombridae (mackerel) family. The Thunnini comprise 15 species across five genera, the sizes of which vary greatly, ranging from the bullet tuna (max length: ...
with it. The reason for the sinking was unknown.
Tropical Storm Bridget
On June 27, a tropical depression formed about south of the tip of the Baja California Peninsula at a location atypical for
tropical cyclogenesis
Tropical cyclogenesis is the development and strengthening of a tropical cyclone in the atmosphere. The mechanisms through which tropical cyclogenesis occurs are distinctly different from those through which temperate cyclogenesis occurs. Tropi ...
. The depression moved generally westward, and intensified into Tropical Storm Bridget on June 28. It started accelerating as it turned towards the northwest, then west, and eventually to the southwest. Bridget weakened into a tropical depression on July 2 and dissipated the next day. It remnant circulation hung about in the area for a few more days. Bridget never came near land and thus, no deaths or damage were recorded.
Hurricane Carlotta
A disturbance south of
Acapulco
Acapulco de Juárez (), commonly called Acapulco ( , also , nah, Acapolco), is a city and major seaport in the state of Guerrero on the Pacific Coast of Mexico, south of Mexico City. Acapulco is located on a deep, semicircular bay and has bee ...
organized into a tropical depression on July 2. It headed generally west-northwest and steadily intensified, becoming a tropical storm later on July 2. It became a hurricane on July 3 and ultimately peaked as a Category 3 hurricane. Hurricane Carlotta was first major hurricane, Category 3 or higher, of the season. It began weakening thereafter, and was a tropical storm by July 8. Carlotta became a depression on July 10 and dissipated the next day. The hurricane did not come near land and caused no significant impact.
Hurricane Denise
An unstable area developed a circulation and became a tropical depression on July 4. It headed west- northwest and became a tropical storm on July 7. The next day, it was a hurricane and turned to the west. Continuing to strengthen, it reached Category 4 intensity on July 9. This windspeed was the highest of the season. The hurricane turned to the southwest and gradually weakened. By July 11 it was nearly stationary. It then headed northwestward again and continued weakening, becoming a tropical storm on July 13. It weakened into a depression on July 14 and dissipated immediately thereafter. Denise brought winds of near-
gale
A gale is a strong wind; the word is typically used as a descriptor in nautical contexts. The U.S. National Weather Service defines a gale as sustained surface winds moving at a speed of between 34 and 47 knots (, or ).Mexico
Mexico (Spanish: México), 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 Guatema ...
, but otherwise caused no damage or casualties.
Tropical Storm Eleanor
An area of disturbed weather developed into a tropical depression on July 10, south of
Acapulco
Acapulco de Juárez (), commonly called Acapulco ( , also , nah, Acapolco), is a city and major seaport in the state of Guerrero on the Pacific Coast of Mexico, south of Mexico City. Acapulco is located on a deep, semicircular bay and has bee ...
. As its center of circulation became more pronounced and it was upgraded into Tropical Storm Eleanor. The tropical storm moved northwestward, and later curved northward. The system made landfall near Manzanillo on July 12. It quickly dissipated. Eleanor brought winds the Manzanillo, but damage from the storm is minor due to the lack of heavy rains.
Tropical Storm Francene
A rapidly moving
squall
A squall is a sudden, sharp increase in wind speed lasting minutes, as opposed to a wind gust, which lasts for only seconds. They are usually associated with active weather, such as rain showers, thunderstorms, or heavy snow. Squalls refer to the ...
y area of disturbed weather that was moving on a northwestward path was upgraded into Tropical Depression Seven on July 27. It intensified into a tropical storm later that day. Francene turned to the west and weakened into a tropical depression on July 28. It slowly weakened and ceased to exist as a
tropical cyclone
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 and squalls. Depend ...
on July 30. Francene's remnants persisted as a tropical disturbance for another twelve hours, before completely dissipating. This tropical cyclone caused no known impact.
Tropical Storm Georgette
An area of disturbed weather about south-southwest of
Cabo San Lucas
Cabo San Lucas (, "Saint Luke Cape"), or simply just Cabo, is a resort city at the southern tip of the Baja California Peninsula, in the Mexican state of Baja California Sur. As at the 2020 Census, the population of the city was 202,694 inhabitan ...
organized a tropical depression on August 11. It was upgraded to tropical storm intensity the next day. After heading generally westward and peaking as a weak to moderate tropical storm on August 12, Georgette slowly weakened. It weakened into a depression on August 14 and underwent
extratropical transition
Extratropical cyclones, sometimes called mid-latitude cyclones or wave cyclones, are low-pressure areas which, along with the anticyclones of high-pressure areas, drive the weather over much of the Earth. Extratropical cyclones are capable of ...
thereafter. The cyclone dissipated twelve hours later. Tropical Storm Georgette had no impact on land.
Tropical Storm Hilary
A tropical disturbance formed on August 11 and gradually organized. The next day, an
atmospheric circulation
Atmospheric circulation is the large-scale movement of air and together with ocean circulation is the means by which thermal energy is redistributed on the surface of the Earth. The Earth's atmospheric circulation varies from year to year, but t ...
developed. Based on this, this system was classified as Tropical Depression Nine on August 13. The depression quickly intensified into a tropical storm and was named ''Hilary''. The system gradually accelerated to the northwest and reached its peak strength on August 15 with winds of 60 mph (95 km/h). Tropical Storm Hilary then started a gradual weakening trend. It became a depression on August 16, turned a little bit more westward, and dissipated on August 17. Hilary never came near land, and as such caused no death or damage.
Hurricane Ilsa
On August 18, a tropical depression formed south of the
Gulf of Tehuantepec
Gulf of Tehuantepec () is a large body of water on the Pacific coast of the Isthmus of Tehuantepec, southeastern Mexico, at . Many (but not all) Pacific hurricanes form in or near this body of water. A strong, gale-force wind called the Tehuan ...
from a
tropical wave
A tropical wave (also called easterly wave, tropical easterly wave, and African easterly wave), in and around the Atlantic Ocean, is a type of atmospheric trough, an elongated area of relatively low air pressure, oriented north to south, which ...
that had entered the Pacific Ocean from the
Atlantic Ocean
The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe ...
. It strengthened into a tropical storm later that day. The tropical storm moved westward, and became a hurricane on August 21. Ilsa became a Category 2 hurricane on August 22. It maintained that intensity for three days as it moved out to sea. On August 25, Ilsa turned westward and rapidly weakened. It fell to tropical storm intensity on August 26. Later that day, while still maintaining winds of
gale
A gale is a strong wind; the word is typically used as a descriptor in nautical contexts. The U.S. National Weather Service defines a gale as sustained surface winds moving at a speed of between 34 and 47 knots (, or ). Ilsa's remnants continued out over the open
Pacific Ocean
The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continen ...
. The remains of Ilsa eventually interacted with another weather system. That triggered the development of the unnamed hurricane of August 31–September 5.
Hurricane Ilsa caused no casualties or damage. As the unnamed hurricane formed from Ilsa's remnants, Ilsa and the latter system are unofficially the same tropical cyclone. Indeed, this year's seasonal report from the
Redwood City
Redwood City is a city on the San Francisco Peninsula in Northern California's Bay Area, approximately south of San Francisco, and northwest of San Jose. Redwood City's history spans its earliest inhabitation by the Ohlone people to being a po ...
Eastern Pacific Hurricane Center The Eastern Pacific Hurricane Center was formerly the center responsible for forecasting Pacific hurricanes in the eastern north Pacific east of 140°W. It was part of the Weather Bureau Forecast Office San Francisco and was based in Redwood City. ...
, in the ''
Monthly Weather Review
The ''Monthly Weather Review'' is a peer-reviewed scientific journal published by the American Meteorological Society. It covers research related to analysis and prediction of observed and modeled circulations of the atmosphere, including technique ...
'' includes a brief discussion of the unnamed hurricane in the report's section on Hurricane Ilsa. Neither the
Central Pacific Hurricane Center
The Central Pacific Hurricane Center (CPHC) of the United States National Weather Service is the official body responsible for tracking and issuing tropical cyclone warnings, watches, advisories, discussions, and statements for the Central Pacifi ...
nor the official
HURDAT
The Hurricane Databases (HURDAT), managed by the National Hurricane Center, are two separate databases that contain details on tropical cyclones, that have occurred within the Atlantic Ocean and Eastern Pacific Ocean since 1851 and 1949 respectiv ...
"best track" database of tropical cyclone location and intensity data explicitly considers them the same. Hence, as far as official records matter, Ilsa and the unnamed hurricane of August 31 – September 5 are different tropical cyclones.
Hurricane Jewel
On August 24, a tropical depression formed from a tropical disturbance about south of
Acapulco
Acapulco de Juárez (), commonly called Acapulco ( , also , nah, Acapolco), is a city and major seaport in the state of Guerrero on the Pacific Coast of Mexico, south of Mexico City. Acapulco is located on a deep, semicircular bay and has bee ...
. It intensified into Tropical Storm Jewel the next day. The
tropical cyclone
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 and squalls. Depend ...
headed generally northwest and paralleled the coast of Mexico. On August 27, Jewel became a hurricane for mere six hours, the minimum possible time in
HURDAT
The Hurricane Databases (HURDAT), managed by the National Hurricane Center, are two separate databases that contain details on tropical cyclones, that have occurred within the Atlantic Ocean and Eastern Pacific Ocean since 1851 and 1949 respectiv ...
. Jewel then turned to the west, and then back to the northwest. Jewel weakened to depression strength on August 31. Tropical Depression Jewel dissipated shortly after that, although its remnants remained distinct until September 3. There was no impact.
Hurricane Katrina
On August 29, an area of weather developed directly into a tropical storm, skipping the tropical depression stage. Katrina steadily intensified as it headed west-northwest, gradually turning to the northwest. It peaked in intensity on September 3 as a Category 4 hurricane with winds of , the second highest of the season. Katrina then headed westward and rapidly weakened. It was downgraded into a tropical storm on September 5 and a depression on September 6. The last advisory was issued on September 7 when Katrina dissipated. Although the hurricane brought Category 3-equivalent winds to
Socorro Island
Socorro Island ( es, Isla Socorro) is a small volcanic island in the Revillagigedo Islands, a Mexican possession lying off the country's western coast. The size is 16.5 by 11.5 km (10.25 by 7.15 miles), with an area of . It is the largest ...
on September 2, no damage was reported there or anywhere else.
Hurricane Twelve
A cold core low absorbed the remnant circulation of Hurricane Ilsa on August 31.
Convection
Convection is single or multiphase fluid flow that occurs spontaneously due to the combined effects of material property heterogeneity and body forces on a fluid, most commonly density and gravity (see buoyancy). When the cause of the convec ...
subsequently increased. By September 3 it was definitely a tropical cyclone as an eye slowly formed. It then became a hurricane. The hurricane rapidly headed towards the northeast and approached a frontal cyclone. By September 5 the hurricane had transitioned into an
extratropical cyclone
Extratropical cyclones, sometimes called mid-latitude cyclones or wave cyclones, are low-pressure areas which, along with the anticyclones of high-pressure areas, drive the weather over much of the Earth. Extratropical cyclones are capable of ...
after weakening to a tropical storm. At the time it was less than southwest of
Juneau, Alaska
The City and Borough of Juneau, more commonly known simply as Juneau ( ; tli, Dzánti K'ihéeni ), is the capital city of the state of Alaska. Located in the Gastineau Channel and the Alaskan panhandle, it is a unified municipality and the se ...
. The extratropical low moved southeastward, retaining its identity until it reached
Montana
Montana () is a state in the Mountain West division of the Western United States. It is bordered by Idaho to the west, North Dakota and South Dakota to the east, Wyoming to the south, and the Canadian provinces of Alberta, British Columbi ...
, where it was absorbed by a
front
Front may refer to:
Arts, entertainment, and media Films
* ''The Front'' (1943 film), a 1943 Soviet drama film
* ''The Front'', 1976 film
Music
* The Front (band), an American rock band signed to Columbia Records and active in the 1980s and e ...
.
It is unknown why this hurricane went unnamed, even though it clearly met the criteria for doing so. Any statement about why is purely speculative at this point. The hurricane is the furthest north a tropical cyclone existed in the Eastern Pacific, and is also the northernmost existence for a
Pacific hurricane
A Pacific hurricane is a mature tropical cyclone that develops within the northeastern and central Pacific Ocean to the east of 180°W, north of the equator. For tropical cyclone warning purposes, the northern Pacific is divided into three regio ...
. It was the only tropical cyclone to exist in the central Pacific this year. No damage or casualties were reported, although it did hassle a few ships.
Hurricane Lily
Rain and wind reports from the
Acapulco
Acapulco de Juárez (), commonly called Acapulco ( , also , nah, Acapolco), is a city and major seaport in the state of Guerrero on the Pacific Coast of Mexico, south of Mexico City. Acapulco is located on a deep, semicircular bay and has bee ...
weather station suggested that a tropical depression was developing. This was confirmed on September 16 from ship reports. It intensified into a tropical storm and was named Lily. Tropical Storm Lily headed northwest in a nearly straight path. By 0000 UTC September 18, the system was a moderate tropical storm located about south of Manzanillo Lily was upgraded to hurricane status on the same day and eventually reached its peak strength. After passing southwest of
Socorro Island
Socorro Island ( es, Isla Socorro) is a small volcanic island in the Revillagigedo Islands, a Mexican possession lying off the country's western coast. The size is 16.5 by 11.5 km (10.25 by 7.15 miles), with an area of . It is the largest ...
, Lily weakened, becoming a storm on September 20. Lily weakened into a depression on September 21, turned to the west-southwest, and dissipated. Its remnants remained visible until September 24, when they were no longer distinct via
weather satellite
A weather satellite or meteorological satellite is a type of Earth observation satellite that is primarily used to monitor the weather and climate of the Earth. Satellites can be polar orbiting (covering the entire Earth asynchronously), or ge ...
. On September 19, the cyclone brought hurricane-force winds to Socorro Island. No damage or casualties were reported.
Tropical Storm Monica
In late September, three tropical disturbances moved westward across the eastern
Pacific Ocean
The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continen ...
. One of them organized into a tropical depression on September 28. The next day the depression was upgraded to Tropical Storm Monica. The tropical storm initially headed west-northwestward and gradually curved towards the north. It reached its peak intensity of 50 mph (85 km/h) on September 29. Monica then gradually weakened. It became a tropical depression on October 1. The cyclone dissipated shortly thereafter. No impact was reported in association with Tropical Storm Monica.
Tropical Storm Nanette
On September 28, a system developed into a tropical depression, simultaneously with Tropical Storm Monica.. It headed generally westward and on September 29, 18 hours after Monica did it, strengthened into a tropical storm. Nanette continued out to sea and slowly strengthened. It peaked in windspeed of 50 mph (85 km/h) on October 3 and turned to the southwest. It then slowly weakened. On October 4, it weakened into a tropical depression and then degenerated into a disturbance that same day. No damage or deaths were reported.
Hurricane Olivia
On October 22, Tropical Depression Eighteen formed from a cluster of three thunderstorms south of Mexico and then strengthened into a tropical storm. It moved northwestward initially, followed by a northeast turn. Olivia then intensified steadily. It reached Category 3 intensity and a peak of 115 mph (185 km/h) winds just before landfall. Early on October 25, Olivia moved ashore just south of
Mazatlán
Mazatlán () is a city in the Mexican state of Sinaloa. The city serves as the municipal seat for the surrounding ''municipio'', known as the Mazatlán Municipality. It is located at on the Pacific coast, across from the southernmost tip of ...
causing major damage. Olivia destroyed 7,000 houses in the region, leaving 30,000 people homeless, and damage totaled $20 million (1975
USD
The United States dollar (symbol: $; code: USD; also abbreviated US$ or U.S. Dollar, to distinguish it from other dollar-denominated currencies; referred to as the dollar, U.S. dollar, American dollar, or colloquially buck) is the official ...
, $ USD). The hurricane killed 30 people, 20 of them were from drownings in shrimp boats.
Tropical Storm Priscilla
A nearly stationary cloudy area developed a circulation on November 2. The depression drifted north for a while before turning to the west-northwest on November 3. It intensified into a tropical storm on November 4. Priscilla then began turning to the north. However, the system failed to re-curve, instead, the tropical storm turned generally westward. The tropical storm peaked in windspeed as a 65 mph (100 km/h) high-end storm on November 5. It then turned to the northwest on a heading nearly directly at
Clarion Island
Isla Clarión, formerly called Santa Rosa, is the second largest, westernmost and most remote of Mexico's Revillagigedo Islands. The island is located west of Socorro Island and over from the Mexican mainland.
It has an area of and three pr ...
, but it dissipated on November 7 about short of landfall.
Other systems
Besides the tropical storms and hurricanes this season, there were four additional tropical depressions that did not make a landfall anywhere. Tropical Cyclone Four formed on July 2 and dissipated the next day. It was the tropical cyclone to come closest to crossing 140°W and entering the
Central Pacific Hurricane Center
The Central Pacific Hurricane Center (CPHC) of the United States National Weather Service is the official body responsible for tracking and issuing tropical cyclone warnings, watches, advisories, discussions, and statements for the Central Pacifi ...
's
area of responsibility
Area of responsibility (AOR) is a pre-defined geographic region assigned to Combatant commanders of the Unified Command Plan (UCP), that are used to define an area with specific geographic boundaries where they have the authority to plan and cond ...
this year. Tropical Cyclone Thirteen formed on September 12 and lasted four days. Tropical Cyclone Seventeen formed October 16 and dissipated a day later. Tropical Cyclone Nineteen, the penultimate system of the season, formed on November 1 and dissipated the next day.
Storm names
These names were used for storms in 1975. It is the same list used in the 1971 season. This is the last time this list was used, as modern naming began in 1978. However, the names Agatha, Carlotta, Georgette, Hilary, Olivia, Priscilla, Terry, Veronica, and Winifred were added onto modern naming lists.
The central Pacific used names and numbers from the western Pacific's naming list. No names were used, as the one storm that formed in this area went unnamed.
See also
*
List of Pacific hurricanes
This is a list of notable Pacific hurricanes, subdivided by reason for notability. Notability means that it has met some criterion or achieved some statistic, or is part of a top ten for some superlative. It includes lists and rankings of Pacific ...
*
Pacific hurricane season
A Pacific hurricane is a mature tropical cyclone that develops within the northeastern and central Pacific Ocean to the east of 180°W, north of the equator. For tropical cyclone warning purposes, the northern Pacific is divided into three regio ...
*
1975 Atlantic hurricane season
The 1975 Atlantic hurricane season featured the first tropical storm to be upgraded to a hurricane based solely on satellite imagery – Hurricane Doris. The season officially began on June 1 and lasted until November 30. These dates c ...
1975 North Indian Ocean cyclone season
The 1975 North Indian Ocean cyclone season was part of the annual cycle of tropical cyclone formation. The season has no official bounds but cyclones tend to form between April and December. These dates conventionally delimit the period of each ye ...