2022 Pacific hurricane season

Category 2 hurricane (SSHWS)
Duration	May 28 – May 31
Peak intensity	110 mph (175 km/h) (1-min); 964 mbar (hPa)

Beginning on May 17, convection began to increase with the intertropical convergence zone stretching from the southwestern Caribbean Sea into the East Pacific basin. An area of low pressure soon developed and further organized into the season's first tropical depression to the south-southwest of the Mexico coastline early on May 28. Within hours, it strengthened into Tropical Storm Agatha. The newly-formed storm moved erratically during its early stages but eventually curved to the northeast. A very favorable environment allowed the system to begin a prolonged period of rapid intensification on May 29; it became the season's first hurricane during the early morning hours and reached its peak intensity at Category 2 strength with winds of 110 mph (175 km/h) by the afternoon. An increase in westerly wind shear and the onset of an eyewall replacement cycle temporarily caused the hurricane to weaken. However, it regained some strength on approach to the coastline of Mexico, and it moved onshore near La Redonda with 105 mph (165 km/h) winds around 21:00 UTC on May 30. The system's center decayed over land and dissipated on June 1 as it became absorbed in developing Tropical Storm Alex to the northeast.[14]

Storm surge near where Agatha's core made landfall caused beach erosion and some additional damage. Torrential rainfall across Oaxaca, peaking at 17.84 inches (453.1 mm) in Santa María Tonameca, triggered landslides and flash flooding in many parts of the state. Strong winds caused additional damage to infrastructure.[14] Agatha killed nine people, all in the Sierra Madre del Sur, and six others remained missing.[15]

Category 1 hurricane (SSHWS)
Duration	June 14 – June 19
Peak intensity	85 mph (140 km/h) (1-min); 978 mbar (hPa)

An area of disturbed weather formed within the monsoon trough a couple of hundred miles offshore the coast of southern Mexico on June 10. The system slowly organized while it moved west, developing into Tropical Storm Blas at 06:00 UTC on June 14. Weak steering currents directed the system to curve north-northeast before sending it back westward. Blas tracked within an environment of warm sea surface temperatures and low to moderate wind shear, allowing it to rapidly become a hurricane on June 15 and reach peak winds of 85 miles per hour (140 km/h) that afternoon as it displayed a well-defined inner core structure. Increasing shear caused the hurricane to fluctuate in intensity through June 17, until cold waters led to a sustained weakening phase. At 18:00 UTC on June 19, Blas degenerated to a remnant low to the southwest of the Baja California peninsula. It continued west until dissipating on June 23.[16]

Moisture from Blas combined with a nearby tropical wave interacted with the mountainous terrain of southwestern Mexico, resulting in heavy rainfall along the coast despite the hurricane remaining well offshore. A peak accumulation of 12.60 inches (320.0 mm) was measured in Laguna de Coyuca.[16] This rain led to river flooding, flash flooding, and landslides, particularly across the states of Michoacán and Guerrero.[17] A couple of dozen vehicles were stranded in flooded neighborhoods near Acapulco, where a sinkhole was reported on the Acapulco-Zihuatanejo Bypass. The bodies of two individuals were discovered near the city, but their cause of death is unknown, as is any possible relation with the hurricane. A few trees, fences, and utility poles were downed by gusty winds. Along the coast, large waves and rough surf resulted in minor beach erosion.[16] Overall damage, though, was relatively minimal.[18]

Tropical storm (SSHWS)
Duration	June 16 – June 28
Peak intensity	60 mph (95 km/h) (1-min); 997 mbar (hPa)

A tropical wave departed Africa on June 5 and entered the East Pacific a week later, where it interacted with the active monsoon trough and the favorable phase of the Madden–Julian oscillation (MJO). Persistent thunderstorms spawned a broad area of low pressure, and both the low and associated convection organized over subsequent days. On June 16, the disturbance developed into a tropical depression; the next day, it intensified into Tropical Storm Celia. The new system moved unusually in its initial stages as it interacted with a cyclonic gyre established nearby, conducting a counter-clockwise curve before moving more definitively toward the west-northwest. Celia's intensity fluctuated for many days as it lost and regained convection in a moderate wind shear environment. On June 24, the cyclone reached peak winds of 60 mph (95 km/h) in spite of a sprawling, disorganized core structure. Celia soon entered colder waters and drier air, causing it to degenerate to a remnant low on June 28 after an unusually long stint as an early season tropical cyclone. The low finally dissipated well west of the Baja California peninsula on June 30.[19]

While stalled off the coast of Central America, Celia interacted with a nearby low-pressure system which brought heavy rainfall to western Guatemala, affecting over 28,000 people.[20] One death has been attributed to Celia. It occurred in Oaxaca, where a man drowned.[21]

Category 3 hurricane (SSHWS)
Duration	July 2 (Entered basin) – July 9
Peak intensity	115 mph (185 km/h) (1-min); 964 mbar (hPa)

At around 15:00 UTC on July 2, Tropical Storm Bonnie emerged into the Eastern Pacific from the Atlantic basin after crossing Nicaragua. Bonnie steadily reorganized as it moved westward away from the coast. Satellite images from later on July 2, revealed the storm to have a deep convective curved band with −117 °F (−83 °C) cloud tops enveloping its west side. This strengthening trend continued, and by the end of the next day, the primary band had become wrapped completely around the center and an inner core was developing. At 03:00 UTC on July 4, Bonnie became a hurricane while located about 210 mi (340 km) south of Salina Cruz, Oaxaca, and attained Category 2 strength later that same day. By early on July 5, Bonnie's inner core structure had become well-developed with a 10 mi-wide (20 km) eye. As a result, the hurricane was able to reach Category 3 strength by 15:00 UTC that day. Beginning several hours afterward and continuing into July 6, Bonnie's cloud pattern deteriorated and the central convection became less organized due to moderate north-northeasterly shear, causing it to weaken to Category 2 strength. The system maintained wind speeds of around 105 mph (165 km/h) for much of that day as it moved west-northwestward away from the Mexican coast, before weakening to Category 1 strength with winds of 90 mph (150 km/h) on July 7. Bonnie's intensity continued to decrease the following day as it moved into cooler waters with sea surface temperatures of 75–77 °F (24–25 °C), where it weakened to a tropical storm about 825 mi (1,330 km) west-southwest of the southern tip of the Baja California peninsula. Then, on July 9, Bonnie degenerated into a post-tropical low as all deep convection within ceased.[22]

Category 4 hurricane (SSHWS)
Duration	July 9 – July 17
Peak intensity	140 mph (220 km/h) (1-min); 953 mbar (hPa)

A tropical wave emerged off Africa on June 26–27 and entered the East Pacific by July 6. The disturbance became gradually better organized as it moved west to west-northwest away from the Mexico coastline, becoming a tropical depression early on July 9 and intensifying into Tropical Storm Darby later that day. Dry air briefly interrupted the storm's intensification, but Darby quickly rebounded and rapidly intensified into a hurricane on July 11. In a 24-hour period ending at 00:00 UTC on July 12, the cyclone strengthened from a 75 mph (120 km/h) hurricane to a 140 mph (220 km/h) Category 4 cyclone, its peak intensity.[23] The storm displayed characteristics of an annular hurricane and was exceptionally small,[24] with hurricane-force winds only extending about 10 mi (15 km) from the center. The system fluctuated in intensity until it encountered a more hostile environment in the Central Pacific basin. The combination of strong wind shear and colder waters caused Darby to dissipate into a trough early on July 17 while located southwest of Hawaii's Big Island.[23]

Category 1 hurricane (SSHWS)
Duration	July 15 – July 21
Peak intensity	85 mph (140 km/h) (1-min); 985 mbar (hPa)

On July 7, the NHC began monitoring the southeastern Pacific south of the coast of Central America, where a low pressure area was expected to form within a few days.[25] The anticipated disturbance formed on July 11, far south of the coasts of Guatemala and El Salvador, producing some disorganized showers.[26] By July 15, the disturbance had become sufficiently organized to be classified as a tropical depression by the NHC.[27] By 03:00 UTC on July 16, the depression had strengthened, with a well defined low-level structure and a tight band of persistent deep convection near the center, and was upgraded to Tropical Storm Estelle.[28] Then, after being hindered by northeasterly shear later that same day,[29] intense convection was able to wrapped completely around the center and Estelle rapidly intensified into a hurricane by 03:00 UTC on July 17.[30] Twelve hours later, the sustained winds near the system's center were at 85 mph (135 km/h).[31] It became weaker, however, as the day went on, apparently due to the inflow of dry air into its core and the effects of wind shear, and its winds fell to 80 mph (130 km/h) by day's end.[32] The gradual weakening continued, and at 09:00 UTC on July 19, Estelle was downgraded to a tropical storm[33] when its center was located just north of Clarion Island.[34] Estelle's upper-level cloud shield became more symmetric later that day, due to reduced wind shear and increased convection that had wrapped around the storm's northern region.[35] By 15:00 UTC on July 21, however, the storm had weakened to a tropical depression as it moved west-northwestward over the open ocean.[36] Later that day the system became a remnant low.[37]

Though Estelle remained well off shore, heavy rains were reported in coastal areas of Baja California Sur, Jalisco, Nayarit and Sinaloa, causing localized flooding and landslides. This was later determined by the National Hurricane Center to have not been from Estelle saying, “there were no reports of damage or casualties associated with Estelle.”[38]

Category 1 hurricane (SSHWS)
Duration	July 26 – August 2
Peak intensity	90 mph (150 km/h) (1-min); 976 mbar (hPa)

On July 21, the NHC began forecasting that an area of low pressure would develop off the southern coasts of El Salvador and Guatemala within a few days.[39] An area of low pressure, associated with a tropical wave, developed two days later, producing disorganized showers and thunderstorms.[40] At 09:00 UTC on July 26, after deep convection developed at the center of the disturbance and become better organized, it was designated as a tropical depression.[41] Six hours later, the system strengthened into Tropical Storm Frank while located about 525 mi (845 km) south-southeast of Manzanillo, Colima.[42] Convection near the storm's center struggled to organize due to northeasterly wind shear as the storm moved westward.[43] The shear persisted through early on July 28.[44] Once the shear diminished sufficiently, the storm was able to strengthen, with deep convection becoming more symmetric around the center and banding features becoming well established by late the next day. Frank consequently intensified into a hurricane by 03:00 UTC on July 30.[45] The system moved to the northwest during the day and maintained sustained winds of 90 mph (150 km/h) for several hours, before encountering decreasing sea surface temperatures by day's end.[46] It then began to weaken as a result, and fell to tropical storm strength early on August 1.[47] Later, it ceased producing organized deep convection and degenerated into a post-tropical cyclone during the following day.[48][49]

Tropical storm (SSHWS)
Duration	July 27 – August 3
Peak intensity	60 mph (95 km/h) (1-min); 998 mbar (hPa)

On July 25, the NHC began monitoring an area of low pressure located southwest of the coast of southwestern Mexico for possible tropical development.[50] The disturbance continued to become better organized and was designated as a tropical depression at 09:00 UTC on July 27.[51] Six hours later, the depression strengthened into a compact Tropical Storm Georgette.[52] The system remained relatively unchanged in strength during the next couple of days, though by early on July 29, its cloud pattern had become more symmetric with a well-developed rain band in the north part of the storm, and its sustained winds reached 60 mph (95 km/h).[53] Then, moving slowly westward, the storm waned over the next couple days, due in part to strong easterly shear generated by the outflow from the circulation of Hurricane Frank, and weakened to a tropical depression on the afternoon of July 31.[54] Further weakening occurred on August 1–2, as the depression made a northeastward turn, steered by Frank.[55] Then, during the afternoon of August 3, Georgette degenerated into a remnant low over the open ocean.[56]

Category 1 hurricane (SSHWS)
Duration	August 6 – August 10
Peak intensity	85 mph (140 km/h) (1-min); 983 mbar (hPa)

On August 2, the NHC began monitoring a tropical wave producing widespread showers and thunderstorms over Central America and the adjacent waters in anticipation that an area of low pressure would form once it moved over the eastern Pacific.[57] The anticipated low developed two days later off the coasts of Guatemala and southern Mexico.[58] By August 6, the disturbance had become sufficiently organized to be classified as a tropical depression by the NHC.[59] Beset by dry air imported to the depression's center by moderate wind shear, the depression was unable to quickly intensify.[60] On the afternoon of August 7, the depression was upgraded to Tropical Storm Howard as convection began to build over the northern semicircle of the system, though the low-level circulation remained partially exposed to the south due to continuing wind shear.[61] The storm continued to organize into the following day, and became a Category 1 hurricane at 21:00 UTC on August 8, as an eye surrounded by deepening convective banding formed.[62] On August 9, Howard's sustained winds reached 85 mph (140 km/h) as it moved west-northwestward,[63] before weakening to a tropical storm at 03:00 UTC on August 10.[64] The remaining deep convection near Howard's center ceased by the middle of that same day, and the storm later degenerated into a post-tropical low.[65]

Sustained tropical storm-force winds of 40 mph (65 km/h), with higher gusts, were reported on Socorro Island around 00:00 UTC on August 8, as Howard passed nearby.[66] That same day, the port of Mazatlán was closed to smaller vessels due to large waves.[67] No coastal watches or warnings were issued for the storm.[66]

Tropical storm (SSHWS)
Duration	August 13 – August 16
Peak intensity	40 mph (65 km/h) (1-min); 1005 mbar (hPa)

On August 7, the NHC began forecasting that an area of low pressure with a potential for tropical cyclogenesis would develop within a few days off the southwestern coast of Mexico.[68] The low developed late the next day, producing disorganized showers and thunderstorms.[69] It gradually become better defined, and on the afternoon of August 13, was classified as a tropical depression.[70] It tracked over warm ocean waters, but there was little improvement in its structure due to moderate to strong east-northeasterly shear,[71] until an unexpected burst of convection during the afternoon of August 15 resulted in the intensification of the depression into Tropical Storm Ivette.[72] But within a few hours however, that burst was shearing away to the west and Ivette soon weakened back to a tropical depression.[73] The system then degenerated into a remnant low on August 16.[74]

Tropical storm (SSHWS)
Duration	September 1 – September 3
Peak intensity	50 mph (85 km/h) (1-min); 999 mbar (hPa)

On August 29, the NHC noted that an area of disturbed weather had formed a few hundred miles south of Acapulco, Mexico.[75] The low gradually organized, developing a low-level circulation on August 31.[76] By 18:00 UTC on September 1, it had gained enough organization to be classified as a tropical depression, while situated about 30 mi (45 km) east-southeast of Socorro Island.[77] Then, fueled by increasing deep convection over the depression's western region and near its center, the system strengthened into Tropical Storm Javier early the next day, though its circulation remained somewhat elongated.[78] Despite that, Javier intensified some, attaining sustained winds of 50 mph (85 km/h) on September 3.[79] Later that same day however, the storm crossed over cooler waters and began to weaken.[80] Javier became a post-tropical cyclone on September 4, while moving out to sea.[81]

Rainbands of Javier brought heavy rain and wind gusts to the southern Baja California peninsula as it passed offshore.[82]

Category 2 hurricane (SSHWS)
Duration	September 4 – September 9
Peak intensity	100 mph (155 km/h) (1-min); 968 mbar (hPa)

On August 30, the NHC noted that an area of disturbed weather had formed a few hundred miles south of Acapulco, Guerrero.[83] This disturbance became organized as a tropical depression on September 4,[84] and strengthened into Tropical Storm Kay later that same day.[85] The storm continued to intensify, and on the morning of September 5, became a Category 1 hurricane.[86] On the following day, the eye of the hurricane passed over Socorro Island with sustained winds of 85 mph (140 km/h).[87] Then, while moving north-northwestward early on September 7, Kay intensified into a Category 2 hurricane.[88] This intensification proved short-lived however, as the cloud tops surrounding Kay's eye warmed and its overall cloud pattern became less organized and somewhat elongated later that same day, resulting in the hurricane weakening to Category 1 strength.[89] Kay made landfall along the central Baja California peninsula coast with 70 mph (115 km/h) winds on September 8,[90] then continuing to weaken as it moved back over the ocean.[91] The storm became a post-tropical cyclone about 145 mi (233 km) southwest of San Diego, California, overnight September 9–10, while slowly curving further offshore.[92]

Altogether, Kay was directly responsible for at least 4 deaths: 3 in Guerrero and 1 in California. Additionally, there were also 2 indirect deaths in Baja California Sur.[93] As the system paralleled the coast of southwestern Mexico its rainbands drenched coastal states from Oaxaca north to Nayarit with up to 5.5 in (140 mm) of rain.[94] Road and agricultural damage in Baja California Sur exceeded 72 million pesos (US$3.6 million).[95][96] Kay's outer bands also hit Southern California and southwest Arizona, bringing wind gusts of near 100 mph (160 km/h) to some areas, primarily in San Diego County, California. Rainfall totals varied across the region, with Mt. Laguna, in San Diego County, recording the highest amount at 5.08 in (129 mm). Flash flooding closed numerous roads in both states; in Imperial County, California, falling boulders impeded traffic along a stretch of I-8. The rainfall was beneficial to crews in Riverside County, California, battling the Fairview Fire, as it mitigated some of the threat posed by the high winds and dry conditions.[9][92][97]

Tropical storm (SSHWS)
Duration	September 15 – September 17
Peak intensity	40 mph (65 km/h) (1-min); 1005 mbar (hPa)

A trough of low pressure producing disorganized showers and thunderstorms extending from the Gulf of Tehuantepec westward to near the southern coast of Mexico formed on September 11.[98] The low remained disorganized near the southern coast of Mexico for the next few days before showing initial signs of organization early on September 15.[99] By 21:00 UTC that same day, the circulation around the center of the low had become better defined and a curved band of convection had formed over the western and southwestern areas of the circulation. In light of these developments the system was designated Tropical Depression Thirteen-E.[100] Surface wind speeds in portions of the circulation increased overnight, and therefore the depression was upgraded to Tropical Storm Lester at 09:00 UTC on September 16, even though it still had a sheared appearance.[101] The storm became somewhat better organized late that day, but this improvement proved fleeting, due in part to its close proximity to the coast.[102] Lester weakened to a tropical depression as it made landfall east of Acapulco[103] on the afternoon of September 17, and then rapidly dissipated inland.[104]

As the storm approached, ports in Guerrero were closed due to high waves of 13 ft.(4 m) in some areas. Also, nearly 600 emergency shelters were opened in preparation for evacuations due to imminent threat of rivers and streams overflowing.[105][106] Lester caused damage throughout much of Guerrero as its heavy rains caused flooding and mudslides. One person in Marquelia Municipality died when swept away by water currents.[107] The most severe damage occurred in Coyuca de Benítez, where over 700 houses were flooded. Additionally, towns in Acatepec, in the state's mountain region, were left isolated due a washed-out roadway.[108]

Tropical storm (SSHWS)
Duration	September 16 – September 20
Peak intensity	65 mph (100 km/h) (1-min); 991 mbar (hPa)

On September 12, the NHC began monitoring for potential development an small area of low pressure located off the coast of southwestern Mexico producing limited showers and thunderstorms.[109] After several days, the disturbance became sufficiently organized on September 17, to be classified as Tropical Storm Madeline.[110] After this, however, the storm strengthened very little though much of the next day due to deep-layer easterly shear.[111] When it diminished on September 18, Madeline's low-level center became embedded underneath the northeastern portion of an area of deep convection with cloud tops as cold as −85 °C (−120 °F).[111] As a result, the storm was able to attain maximum sustained winds of 65 mph (100 km/h) on September 19, when located about 175 mi (280 km) south-southeast of the southern tip of the Baja California peninsula.[112] Later that same day, Madeline began to weaken, becoming first a tropical depression[113] and then a remnant low on September 20.[114]

Two deaths were attributed to Madeline as it moved along the coast of southwest Mexico, with one person remaining missing. Several coastal states were hit by heavy rains, strong winds and rough surf from the storm.[115]

Tropical storm (SSHWS)
Duration	September 21 – September 25
Peak intensity	65 mph (100 km/h) (1-min); 997 mbar (hPa)

A small area of low pressure formed near the coast of southwestern Mexico on September 20.[116][117] Rain and thunderstorm activity within the disturbance quickly became better organized, resulting in the formation of Tropical Depression Fifteen-E at 21:00 UTC on September 21,[118] and then of Tropical Storm Newton less than four hours later.[119] As the storm moved west-northwestward on September 22, a tiny eye-like feature and new deep convection formed in the core, enabling it to generate sustained winds of 65 mph (100 km/h).[120] Later that day however, the convection at the storm's center collapsed suddenly,[121] and although it briefly recovered,[122] Newton began to weaken again the next morning as it passed near Socorro Island.[123] It became a tropical depression on September 24,[124] then degenerated into a remnant low one day later.[125] For several days afterward, through September 29, the NHC continued monitoring Newton's remnants for possible regeneration, and its associated shower activity briefly become slightly better organized on September 28, before being stymied by increasingly unfavorable conditions.[126][127]

Category 4 hurricane (SSHWS)
Duration	September 28 – October 3
Peak intensity	130 mph (215 km/h) (1-min); 954 mbar (hPa)

On September 26, the NHC noted that a low pressure area had formed south of the southwestern Mexico coast within an environment conducive for gradual tropical development.[126] Shower and thunderstorm activity associated with this low increased the following day,[128] and it steadily gained organization on September 28; the system developed a well-defined center late that day, becoming a tropical depression.[129] Further development occurred overnight and the system intensified into Tropical Storm Orlene at 09:00 UTC on September 29, while located about 295 mi (475 km) south of Manzanillo, Colima.[130] The next day, as the storm moved northward along the edge of a ridge over central Mexico, it generated a few bursts of deep convection and developed a small inner core with a curved band to the south.[131] Orlene intensified into a Category 1 hurricane at 15:00 UTC on October 1,[132] and to Category 2 strength about eight hours later.[133] Orlene continued to rapidly intensify until it peaked with Category 4 strength at 09:00 UTC on October 2, its maximum sustained winds having increased from 65 mph (100 km/h) to 130 mph (215 km/h) in 24 hours. Wind shear from the southwest began to adversely affect the system soon thereafter, weakening it to a Category 3 hurricane six hours later,[134] and then to Category 2 that night as it passed over the Islas Marías.[135] Later, at 14:45 UTC on October 3, Orlene made landfall in Escuinapa Municipality, Sinaloa, as a Category 1 hurricane with winds of 85 mph (140 km/h).[136] The system rapidly weakened inland, becoming a tropical depression by 21:00 UTC that same day,[137] and then dissipating over the Sierra Madre mountains several hours after that.[138]

Orlene brought heavy rain to several states in Western Mexico, which resulted in widespread flooding and several mudslides in Sinaloa and Nayarit, but there were no casualties reported as the storm moved through.[137] Damage in San Blas, Nayarit was over 12 million pesos (US$600,000).[139]

Tropical storm (SSHWS)
Duration	October 3 – October 5
Peak intensity	45 mph (75 km/h) (1-min); 1005 mbar (hPa)

On September 30, the NHC began monitoring a newly formed area of disturbed weather some 600 mi (970 km) south-southwest of the southern tip of the Baja California peninsula.[140] Shower and thunderstorm activity within the disturbance increased and began showing signs of becoming organized on October 1,[141] and satellite imagery the following day indicated that its surface circulation had become better defined.[142] These trends continued, resulting in the formation of Tropical Storm Paine on October 3.[143] There was an increase in banding around the western and southern portions of the storm's circulation into the following day, and it strengthened to an intensity of 45 mph (75 km/h).[144] This was fleeting however, and by the time the storm passed near Clarion Island early on October 5, it was devoid of deep convection.[145] Later that same day, Paine degenerated into a remnant low.[146]

Tropical storm (SSHWS)
Duration	October 9 (Entered basin) – October 10
Peak intensity	45 mph (75 km/h) (1-min); 993 mbar (hPa)

At 21:00 UTC on October 9, Tropical Storm Julia left the Atlantic basin and was designated as an East Pacific system about 45 mi (70 km) west-northwest of Managua, Nicaragua,[147] and its center emerged off shore a few hours later.[148] The system moved to the west and then to the west-northwest parallel to and very near the coasts of Nicaragua and El Salvador with maximum sustained winds of 40 mph (65 km/h). It maintained a band of deep convection over the southern and eastern portions of its circulation, the areas not still interacting with the mountainous terrain inland.[149] At about 12:00 UTC on October 10, the center of the storm crossed the coast of El Salvador, about 35 mi (56 km) west of San Salvador, and then weakened to a tropical depression, with the whole of its circulation becoming stretched.[150] Later that same day, Julia degenerated into an open trough overland.[151]

While an Atlantic hurricane and then tropical storm, Julia's heavy rains caused widespread life-threatening flash floods and deadly mudslides throughout Central America; several storm related fatalities were reported across the region. Torrential rain continued to fall in northwestern Central America as Julia moved inland from the Pacific.[152]

Category 4 hurricane (SSHWS)
Duration	October 20 – October 23
Peak intensity	130 mph (215 km/h) (1-min); 954 mbar (hPa)

On October 16, the NHC began monitoring an area of disturbed weather south of the southern coast of Mexico.[153] Thunderstorm activity increased and became better organized within the disturbance over the next few days, and the low's circulation become increasingly better defined as well.[154] This trend continued, and early on October 20, it developed into Tropical Depression Nineteen-E. Soon thereafter, the depression strengthened into Tropical Storm Roslyn.[155] Roslyn became a hurricane at 03:00 UTC, on October 22, and, within 12 hours rapidly intensified to a Category 4 hurricane with sustained winds of 130 mph (215 km/h).[156] Roslyn quickly lost intensity after hitting Mexico.

The rains and winds associated with Roslyn left four people dead in the state of Nayarit.[157][158] Damages statewide were stood at 800 million pesos (US$40.1 million).[159]