The 2025 Pacific hurricane season is the current

Pacific hurricane season A Pacific hurricane is a 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 regions: t ...

for the

Northern Hemisphere The Northern Hemisphere is the half of Earth that is north of the equator. For other planets in the Solar System, north is defined by humans as being in the same celestial sphere, celestial hemisphere relative to the invariable plane of the Solar ...

. The season officially began on May 15, 2025, and ends on November 30, 2025. For the Central Pacific ( 140ºW to 180º), the season began on June 1, 2025, and it too ends on November 30, 2025. These dates, adopted by convention, describe the period in which most subtropical or

tropical cyclogenesis Tropical cyclogenesis is the development and strengthening of a tropical cyclone in the atmosphere. The mechanisms through which tropics, tropical cyclogenesis occur are distinctly different from those through which temperate cyclogenesis occu ...

occurs in the

Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five Borders of the oceans, oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean, or, depending on the definition, to Antarctica in the south, and is ...

. In contrast to last season, which was the latest starting Pacific hurricane season in the satellite-era, there were multiple early season storms this year. Tropical Storm Alvin formed off the coast of southern Mexico on May 28, and remained over the open waters of the Eastern Pacific. Four storms formed in a ten-day period from June 8 to June 17, including Hurricane Barbara and Tropical Storm Dalila, both of which grazed the southwestern coast of Mexico, and Hurricane Erick, the earliest fifth named storm on record in the Eastern Pacific and the earliest major hurricane to make

landfall Landfall is the event of a storm moving over land after being over water. More broadly, and in relation to human travel, it refers to 'the first land that is reached or seen at the end of a journey across the sea or through the air, or the fact ...

on either coast of Mexico (Pacific or Atlantic). __TOC__

Seasonal forecasts

In advance of each

Pacific hurricane A Pacific hurricane is a 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 regions: t ...

season, forecasts of hurricane activity are issued by forecasters from the United States

National Oceanic and Atmospheric Administration The National Oceanic and Atmospheric Administration (NOAA ) is an American scientific and regulatory agency charged with Weather forecasting, forecasting weather, monitoring oceanic and atmospheric conditions, Hydrography, charting the seas, ...

(NOAA)'s

Climate Prediction Center The Climate Prediction Center (CPC) is a United States federal agency that is one of the National Centers for Environmental Prediction, which are a part of the National Oceanic and Atmospheric Administration's National Weather Service. CPC is hea ...

, and

Mexico Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country in Latin America, and borders the United States to the north, and Guatemala and Belize to the southeast; while having maritime boundar ...

's Servicio Meteorológico Nacional (SMN). The forecasts include weekly and monthly changes in significant factors that help determine the amount of tropical storms, hurricanes, and major hurricanes within a particular season. According to NOAA, the average Pacific hurricane season between 1991 and 2020 contained about 15 named storms, 8 hurricanes and 4 major hurricanes (Category 3 and higher), as well as an

accumulated cyclone energy Accumulated cyclone energy (ACE) is a metric used to compare overall activity of tropical cyclones, utilizing the available records of windspeeds at six-hour intervals to synthesize storm duration and strength into a single index value. The ACE ...

(ACE) index of 80–115 units. Broadly speaking, ACE is the measure of the power of a tropical or

subtropical cyclone A subtropical cyclone is a weather system that has some characteristics of both tropical cyclone, tropical and extratropical cyclones. As early as the 1950s, meteorologists were uncertain whether they should be characterized as Tropical cyclone ...

multiplied by the length of time it existed. ACE is only calculated for full advisories on specific tropical or subtropical cyclones reaching wind speeds of 39 mph (63 km/h) or higher. NOAA typically describes a season as above-average, average, or below-average depending on the cumulative ACE index, but the number of tropical storms, hurricanes or major hurricanes can also be considered. On May 7, 2025, SMN issued its first outlook for the Pacific hurricane season, forecasting an above average season with 16–20 named storms, 8–11 hurricanes, and 4–6 major hurricanes. On May 22, NOAA released its outlook for the eastern Pacific, which calls for a near-average season with 12 to 18 named storms, 5 to 10 hurricanes, and 2 to 5 major hurricanes, citing a continued neutral phase, the unlikelihood of an

El Niño EL, El or el may refer to: Arts and entertainment Fictional entities * El, a character from the manga series ''Shugo Chara!'' by Peach-Pit * Eleven (''Stranger Things'') (El), a fictional character in the TV series ''Stranger Things'' * El, fami ...

, and the possibility of

La Niña LA most frequently refers to Los Angeles, the second most populous city in the United States of America. La, LA, or L.A. may also refer to: Arts and entertainment Music *La (musical note), or A, the sixth note *"L.A.", a song by Elliott Smit ...

in the summer. This increases vertical wind shear in the basin and slightly reduces sea surface temperatures, thus favoring mild to moderate tropical cyclone activity. Furthermore, many global computer models predicted a negative

Pacific decadal oscillation The Pacific decadal oscillation (PDO) is a robust, recurring pattern of ocean-atmosphere climate variability centered over the mid-latitude Pacific basin. The PDO is detected as warm or cool surface waters in the Pacific Ocean, north of 20°N. O ...

(PDO), a phase of a multi-decadal cycle that favored the continuation of much warmer-than-average sea surface temperatures, which had been occurring since

2021 Like the year 2020, 2021 was also heavily defined by the COVID-19 pandemic, due to the emergence of multiple Variants of SARS-CoV-2, COVID-19 variants. The major global rollout of COVID-19 vaccines, which began at the end of 2020, continued ...

, unlike the 1991-2020 period, which generally featured below-normal activity.

Seasonal summary

Activity within the Eastern Pacific began with the formation and development of Tropical Storm Alvin on May 28, two weeks after the official start of the season, but nearly two weeks earlier than the average formation date of the basin's first named storm. Alvin persisted off the coast of Mexico for a couple days, before degenerating into a remnant low on May 31. The pace of activity quickened in early June. Two storms, Hurricane Barbara and Tropical Storm Cosme, formed on June 8, off the coast of southwestern Mexico. Next came Tropical Storm Dalila, which formed near the coast of southern Mexico on June 13. Hurricane Erick followed early on June 17, off the coast of southern Mexico. Erick was the earliest fifth named storm in the Eastern Pacific basin on record, surpassing the June 25 mark set by Hurricane Enrique in 2021. It was also the earliest major hurricane on record to make

on either coast of Mexico (Pacific or Atlantic); the previous Pacific coast record was set by Hurricane Kiko on August 26, 1989.

Systems

Tropical Storm Alvin

On May 25, an area of low pressure developed south of the coast of southern Mexico. On the afternoon of May 28, the low developed into Tropical Depression OneE. The depression became more organized around the center and strengthened into Tropical Storm Alvin the next morning. The storm continued to become better organized throughout the day, due to moving toward the northwest within an environment of warm

sea surface temperature Sea surface temperature (or ocean surface temperature) is the ocean temperature, temperature of ocean water close to the surface. The exact meaning of ''surface'' varies in the literature and in practice. It is usually between and below the sea ...

s (SSTs) and low

wind shear Wind shear (; also written windshear), sometimes referred to as wind gradient, is a difference in wind speed and/or direction over a relatively short distance in the atmosphere. Atmospheric wind shear is normally described as either vertical ...

, causing its sustained winds to increase to . Early on May 30, the storm moved into an increasingly hostile environment with increasing wind shear and decreasing SSTs, causing it to weaken. Later, on the morning of May 31, Alvin degenerated into a remnant low while approaching the southern tip of the Baja California peninsula. The precursor to Alvin caused strong winds and heavy rain in

El Salvador El Salvador, officially the Republic of El Salvador, is a 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 S ...

and

Chiapas Chiapas, officially the Free and Sovereign State of Chiapas, is one of the states that make up the Political divisions of Mexico, 32 federal entities of Mexico. It comprises Municipalities of Chiapas, 124 municipalities and its capital and large ...

. In El Salvador, multiple buildings were damaged and over 50 people were injured. In Chiapas, flooding killed one person. Agricultural losses in

Emiliano Zapata Emiliano Zapata Salazar (; 8 August 1879 – 10 April 1919) was a Mexican revolutionary. He was a leading figure in the Mexican Revolution of 1910–1920, the main leader of the people's revolution in the Mexican state of Morelos, and the insp ...

were estimated at Mex$310,000 (US$16,000). In

Greater Mexico City Greater Mexico City is the conurbation around Mexico City, officially called the Metropolitan Area of the Valley of Mexico (). It encompasses Mexico City itself and 60 adjacent municipalities of Mexico, municipalities of the State of Mexico and Hi ...

, remnant moisture from Alvin caused heavy rainfall and flash flooding in Coacalco de Berriozábal and

Los Reyes La Paz La Paz is a municipality in the State of Mexico, Mexico, with its municipal seat in the town of Los Reyes Acaquilpan. It is located on the dividing line between Mexico State and the eastern edge of the Federal District and is part of the Greater M ...

. Numerous vehicles and roads were damaged by floodwaters. In Los Reyes La Paz, a group of people in a car were swept away by floodwaters. Alvin also generated heavy rainfall over

Mexico City Mexico City is the capital city, capital and List of cities in Mexico, largest city of Mexico, as well as the List of North American cities by population, most populous city in North America. It is one of the most important cultural and finan ...

. These rains disrupted the

Mexico City Metro The Mexico City Metro () is a rapid transit system that serves Greater Mexico City, the metropolitan area of Mexico City, including some municipalities in the State of Mexico. Operated by the Sistema de Transporte Colectivo (STC), it is the Lis ...

and other public transportation lines. Additionally, remnant moisture from Alvin also reached the

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Hurricane Barbara

On June 4, a trough of low pressure formed off the coast of southern Mexico. Two days later, showers and thunderstorms associated with the low gradually increased near the

Gulf of Tehuantepec The 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 T ...

. By the morning of June 8, a closed and well-defined low-level circulation had developed within the disturbance, marking the formation of Tropical Storm Barbara. Barbara steadily strengthened into the next day, and by 14:00 UTC on June 9, had become a minimal Category 1 hurricane, while located about southwest of Manzanillo, Colima. Later that same day, however, the system weakened, and fell below hurricane strength. Then, on June 10, as Barbara moved through cooler waters and into a less favorable atmospheric environment, its deep convection diminished considerably, and by late that same day, it had degenerated to a remnant low.

Tropical Storm Cosme

On June 6, a broad area of low pressure formed along the western side of an elongated trough south of Mexico. Showers and thunderstorms associated with the low became considerably better organized early on June 8, resulting in the formation of Tropical Depression Three-E. Moving slowly northwestward, the system soon strengthened into Tropical Storm Cosme. Cosme continued to intensify, and by the afternoon of June 9, was nearing hurricane strength, with sustained winds of . Additional strengthening was stifled, however, and Cosme began weakening the following morning, due to the effects of moderate northeasterly wind shear and the presence of Barbara to the northeast. Ultimately, all deep convection ceased, and the storm degenerated to a remnant low early on June 11.

Tropical Storm Dalila

On June 10, a broad area of low pressure located several hundred miles south of the Gulf of Tehuantepec. Showers and thunderstorms associated with the low increased the following day and later began showing signs of organization, though its low-level circulation remained broad and elongated. Due to the increasing likelihood of the system developing into a tropical storm, and its proximity to coastal Mexico, the NHC designated it

Potential Tropical Cyclone The following is a glossary of tropical cyclone terms. A ;Advisory: Official information issued by tropical cyclone warning centers describing all tropical cyclone watches and warnings in effect along with details concerning tropical cyclone loc ...

FourE at 21:00 UTC on June 12. The system gradually became better organized, developing into Tropical Depression FourE, then soon strengthening into Tropical Storm Dalila at 18:00 UTC on June 13, about south of

Zihuatanejo Zihuatanejo (), and/or Ixtapa-Zihuatanejo, is the fourth largest city in the Mexican state of Guerrero. It was known by 18th-century English mariners as Chequetan and/or Seguataneo. Politically the city belongs to the municipalities of Mexico, m ...

Guerrero Guerrero, officially the Free and Sovereign State of Guerrero, is one of the 32 states that compose the administrative divisions of Mexico, 32 Federal Entities of Mexico. It is divided into Municipalities of Guerrero, 85 municipalities. The stat ...

. The storm continued to gain strength the following day near the coast of southwestern Mexico, its sustained winds reaching that afternoon. However, on the morning of June 15, Dalila began weakening, and it became a remnant low late that day. Dalila brought high winds and flooding to coastal southwestern Mexico. Mudslides, road washouts, fallen trees, and roof collapses were reported in several

municipalities of Guerrero Guerrero is a state in Southwest Mexico that is divided into 85 municipalities. According to the 2020 Mexican census, Guerrero is the 13th most populous state with inhabitants and the 14th largest by land area spanning . Municipalities in G ...

, primarily in and around

Acapulco Acapulco de Juárez (), commonly called Acapulco ( , ; ), is a city and Port of Acapulco, major seaport in the Political divisions of Mexico, state of Guerrero on the Pacific Coast of Mexico, south of Mexico City. Located on a deep, semicirc ...

. Power outages were reported in Guerrero. Dangerous rip currents and surf conditions also affected much of Mexico's Pacific coast.

Hurricane Erick

On June 14, a broad area of low pressure, associated with 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 ...

, formed off the Pacific coast of

Costa Rica Costa Rica, officially the Republic of Costa Rica, is a country in Central America. It borders Nicaragua to the north, the Caribbean Sea to the northeast, Panama to the southeast, and the Pacific Ocean to the southwest, as well as Maritime bo ...

. Showers and thunderstorms associated with the low became better organized over the next couple of days, and the NHC designated it Potential Tropical Cyclone FiveE at 21:00 UTC on June 16. The system soon acquired a well-defined circulation, developing into Tropical Depression FiveE. The depression then strengthened into Tropical Storm Erick the next morning. The storm tracked northwestward through the day, while becoming increasingly better-organized. Deep convection expanded, and cloud tops cooled to about near the improving inner-core structure. Erick

rapidly intensified Rapid intensification (RI) is any process wherein a tropical cyclone strengthens very dramatically in a short period of time. Tropical cyclone forecasting agencies utilize differing thresholds for designating rapid intensification events, th ...

into a Category 1 hurricane around 12:00 UTC on June 18, about 160 mi (255 km) south-southeast of

Puerto Ángel Puerto Ángel ( English: "Angel Port") is a Mexican small coastal town in the state of Oaxaca located in the municipality of San Pedro Pochutla. It, along with San Agustinillo and Playa Zipolite are known as the "Riviera Oaxaqueña". It is loca ...

Oaxaca Oaxaca, officially the Free and Sovereign State of Oaxaca, is one of the 32 states that compose the political divisions of Mexico, Federative Entities of the Mexico, United Mexican States. It is divided into municipalities of Oaxaca, 570 munici ...

. Rapid intensification continued, and with data collected from a

Hurricane Hunter Hurricane hunters, typhoon hunters, or cyclone hunters are aircrews that fly into tropical cyclones to gather weather data. In the United States, the organizations that fly these missions are the United States Air Force Reserve's 53rd Weather ...

flight, the NHC upgraded Erick to category 2 strength a few hours later. Then, after another Hurricane Hunter flight, the storm was upgraded once more, becoming a Category 3 major hurricane at 00:00 UTC on June 19. Later, as Erick approached the coast of Mexico, the storm reached its peak intensity, with Category 4 sustained winds of and a minimum central pressure of . Then, shortly before 12:00 UTC, Erick made landfall in extreme western Oaxaca, about east of

Punta Maldonado Punta Maldonado (also known as El Faro on account of the nearby lighthouse) is a small coastal community in the Mexican state of Guerrero. Previously located in the municipality of Cuajinicuilapa, it became part of the new municipality of San ...

, with sustained winds of . Inland, the hurricane rapidly weakened as its inner core began to collapse. Moving northwestward over rugged terrain, the inner core continued to deteriorate, and the system's overall convective pattern became quite ragged. Consequently, Erick weakened to tropical storm strength by 21:00 UTC. Later that same day, the storm weakened to a tropical depression, and then dissipated.

Storm names

The following list of names is being used for named storms that form in the North Pacific Ocean east of 140°W during 2025. This is the same list used in the

2019 season Nineteen or 19 may refer to: * 19 (number) * One of the years 19 BC, AD 19, 1919, 2019 Films * ''19'' (film), a 2001 Japanese film * ''Nineteen'' (1987 film), a 1987 science fiction film * '' 19-Nineteen'', a 2009 South Korean film * '' Dici ...

. For storms that form in the North Pacific from 140°W to the

International Date Line The International Date Line (IDL) is the line extending between the South and North Poles that is the boundary between one calendar day and the next. It passes through the Pacific Ocean, roughly following the 180.0° line of longitude and de ...

, the names come from a series of four rotating lists. Names are used one after the other without regard to year, and when the bottom of one list is reached, the next named storm receives the name at the top of the next list. Any named storms that form within the area in 2025 will be listed below. Named storms in the table above that cross into the area during the season are noted (*).

Season effects

This is a table of all of the storms that have formed in the 2025 Pacific hurricane season. It includes their duration, names, intensities, areas affected, damages, and death totals. Deaths in parentheses are additional and indirect (an example of an indirect death would be a traffic accident), but were still related to that storm. Damage and deaths include totals while the storm was extratropical, a wave, or a low, and all of the damage figures are in 2025 USD.

References

External links

National Hurricane Center and Central Pacific Hurricane Center
(website)
Servicio Meteorológico Nacional
(website, in Spanish)

(website) {{Tropical cyclone season, 2025 Pacific hurricane seasons Tropical cyclones in 2025