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2021 Pacific hurricane season

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2021 Pacific hurricane season
Season summary map
Seasonal boundaries
First system formedMay 9, 2021
Last system dissipatedSeason ongoing
Strongest storm
NameFelicia
 • Maximum winds145 mph (230 km/h)
(1-minute sustained)
 • Lowest pressure947 mbar (hPa; 27.97 inHg)
Seasonal statistics
Total depressions12
Total storms12
Hurricanes4
Major hurricanes
(Cat. 3+)		1
Total fatalities5 total
Total damage$100 million (2021 USD)
Related articles
Pacific hurricane seasons
2019, 2020, 2021, 2022, 2023

The 2021 Pacific hurricane season is an ongoing event of the annual tropical cyclone season in the Northern Hemisphere. The season officially began on May 15 in the Eastern Pacific Ocean, and on June 1 in the Central Pacific; both will end on November 30. These dates historically describe the period each year when most tropical cyclones form in the Pacific Ocean basin and are adopted by convention. However, the formation of tropical cyclones is possible at any time of the year, as illustrated by the formation of Tropical Storm Andres on May 9, which became the earliest forming tropical storm in the northeastern Pacific proper (east of 140°W longitude) on record. In June, Tropical Storm Dolores caused widespread damage in Western Mexico two days later, killing three people and with $50 million (USD 2021) in damage.[nb 1]

Seasonal forecasts

Record Named
storms 		Hurricanes Major
hurricanes 		Ref
Average (1991–2020): 15 8 4 [1]
Record high activity: 1992: 27 2015: 16 2015: 11 [2]
Record low activity: 2010: 8 2010: 3 2003: 0 [2]
Date Source Named
storms 		Hurricanes Major
hurricanes 		Ref
May 12, 2021 SMN 14–20 7–10 4–5 [3]
May 20, 2021 NOAA 12–18 5–10 2–5 [4]
Area Named
storms		 Hurricanes Major
hurricanes		 Ref
Actual activity: EPAC 12 4 1
Actual activity: CPAC 0 0 0
Actual activity: 12 4 1

Forecasts include weekly and monthly changes in important factors that help determine the number of tropical storms, hurricanes, and major hurricanes within a particular year. According to the National Oceanic and Atmospheric Administration (NOAA), the average hurricane season in the Eastern and Central Pacific between 1991 and 2020 contained approximately 15 tropical storms, 8 hurricanes, and 4 major hurricanes. The NOAA generally classifies a season as above average, average, or below average based on the cumulative ACE index, but occasionally the number of tropical storms, hurricanes, and major hurricanes within a hurricane season is also considered. Factors they expected to reduce activity were near- or below-average sea surface temperatures across the eastern Pacific and the El Niño–Southern Oscillation remaining in the neutral phase, with the possibility of a La Niña developing.[4]

On May 12, 2021, the Servicio Meteorológico Nacional issued its forecast for the season, predicting a total of 14–20 named storms, 7–10 hurricanes, and 4–5 major hurricanes to develop.[3] On May 20, 2021, the National Oceanic and Atmospheric Administration (NOAA) issued their outlook, calling for a below-normal to near-normal season with 12–18 named storms, 5–10 hurricanes, 2–5 major hurricanes, and an accumulated cyclone energy index of 65% to 120% of the median.

Seasonal summary

Main article: Timeline of the 2021 Pacific hurricane season
Tropical Storm Dolores (2021)Saffir–Simpson scale
Three tropical cyclones present in the East Pacific simultaneously on August 2. From right to left; Ignacio, Hilda, and a disturbance that would eventually become Jimena.

The Accumulated Cyclone Energy (ACE) index for the 2021 Pacific hurricane season, as of 03:00 UTC August 3, is 41.3625 units in the Eastern Pacific and 0 units in the Central Pacific. The total ACE in the basin is 41.3625 units.[nb 2] Broadly speaking, ACE is a measure of the power of a tropical or subtropical storm multiplied by the length of time it existed. It is only calculated for full advisories on specific tropical and subtropical systems reaching or exceeding wind speeds of 39 mph (63 km/h).

Although hurricane season in the eastern Pacific does not officially begin until May 15, and on June 1 in the central Pacific,[5] activity began early, with Tropical Storm Andres forming on May 9. However it was short-lived, dissipating after encountering unfavorable conditions after two days. After a period of inactivity, Blanca formed, marking only the sixth time since 1949 that two tropical storms developed in the month of May, with the other years being 1956, 1984, 2007, 2012, and 2013.[2] A week after Blanca dissipated, Carlos formed, remaining over open waters and never impacting land. Dolores formed shortly after and peaked as a strong tropical storm before making landfall in Mexico, causing moderate damage throughout the states of Colima and Michoacán, with three people dead. Following Dolores was Enrique, which formed in a similar area but later intensified into a Category 1 hurricane, causing similar impacts and killing two people. After a period of inactivity in the basin, Felicia formed on July 14. It rapidly intensified into the season’s first major hurricane two days later, peaking as a Category 4 hurricane. However, it never impacted land. Alongside Felicia was Guillermo, which reached tropical storm status and took a slightly similar path to Felicia but did not strengthen further. Around the end of July, Hurricane Hilda peaked as a Category 1 hurricane while staying well out to sea. A few days later, Tropical Storm Ignacio formed east of Hilda, but its peak was short-lived due to unfavorable conditions. Along with Ignacio, a tropical depression formed which quickly dissipated, however it later regenerated and became Tropical Storm Jimena. On August 7, a tropical depression formed which later became Tropical Storm Kevin. On August 10, another depression formed over the same region, which later became Tropical Storm Linda. Later, Linda would strengthen to a hurricane. A disturbance formed in the Central Pacific, which later entered the West Pacific and became a tropical depression.

Systems

Tropical Storm Andres

Tropical storm (SSHWS)
 
DurationMay 9 – May 11
Peak intensity40 mph (65 km/h) (1-min);
1005 mbar (hPa)
See also: List of off-season Pacific hurricanes

On May 7, a low-pressure system formed several hundred miles southwest of the southern coast of Mexico and was forecast to move into more favorable conditions by the weekend.[6] By May 8, the disturbance's thunderstorms started to quickly organize,[7] and the system was designated as Tropical Depression One-E at 09:00 UTC on the next day. At the time, the system's center became well-defined and located east of a well organized mass of convection despite the negative impact of moderate west-southwesterly wind shear on the system.[8] According to scatterometer data and satellite estimates, the depression strengthened into Tropical Storm Andres six hours later, becoming the earliest named storm in the Northeast Pacific (east of 140°W) on record in the satellite era, breaking the previous record of Tropical Storm Adrian in 2017 by 12 hours.[9] However, Andres did not have any banding features, and its appearance became more ragged on satellite imagery as it moved into an area with increasingly hostile conditions.[10] Soon afterward, wind shear caused the storm's circulation to become elongated and its cloud tops to warm.[11] Andres weakened to a tropical depression at 21:00 UTC on May 10 as its center became devoid of convective activity and the remaining thunderstorms were displaced well to the east of the storm's center of circulation.[12] Andres subsequently degenerated into a remnant low at 15:00 UTC on May 11.[13]

The outer storms of Andres produced heavy rainfall in Southwestern Mexico.[14][15][16] Moisture from the storm caused intense rain and even a hailstorm as far east as the State of Mexico, including in the state's capital, Toluca.[16] Vehicles became stranded in floods, some small trees got knocked over, and about 50 houses were damaged by a flooding river.[17][18] 30 cars were also stranded in a flooded parking lot of a church in Metepec.[19]

Tropical Storm Blanca

Tropical storm (SSHWS)
 
DurationMay 30 – June 4
Peak intensity60 mph (95 km/h) (1-min);
998 mbar (hPa)

On May 24, the National Hurricane Center (NHC) first noted an area of low pressure to develop south of the coast of Mexico for possible tropical cyclogenesis.[20] Four days later, a low-pressure area finally formed a couple of hundred kilometers south of the country.[21] The low was initially embedded within a large monsoon trough and was interacting with another system to its east. However, as it gradually moved west-northwestwards, the system became more organized and better defined, and by 21:00 UTC on May 30, was classified as Tropical Depression Two-E.[22] The depression continued to gradually become more symmetric, despite its displaced low- and mid-level circulations.[23] The next day, Two-E strengthened to a tropical storm and received the name Blanca.[24] A relatively compact cyclone, Blanca quickly gained strength throughout the day of May 31, reaching its peak intensity at 09:00 UTC on June 1 with winds of 60 mph (95 km/h) and a pressure of 998 mb (29.47 inHg).[25] Shortly afterwards, vertical wind shear weakened Blanca as its low level circulation became partially exposed on satellite images later into the day.[26] Blanca continued to weaken on June 2 due to wind shear and the entrainment of dry, stable air into its circulation.[27] Blanca further weakened into a tropical depression later that day.[28] Blanca degenerated into a post-tropical cyclone early on June 4 as thunderstorm activity dissipated completely.[29]

Tropical Storm Carlos

Tropical storm (SSHWS)
 
DurationJune 12 – June 16
Peak intensity50 mph (85 km/h) (1-min);
1000 mbar (hPa)

On June 2, the NHC noted the possible development of a low-pressure area located several miles offshore the southwestern coast of Mexico in the next five days.[30] A day later, the low-pressure area formed and was located in favorable conditions.[31] On June 6, the NHC upgraded the low-pressure area's chances of developing into a tropical cyclone to 90%, but the system lacked a well defined low level circulation.[32] However, on June 8, cyclogenesis was no longer expected as a result of limited thunderstorm activity due to dry air and strong wind shear.[33] On June 10, the low-pressure area began producing more thunderstorm activity and was once again monitored for possible cyclogenesis as it traversed favorable environmental conditions.[34] By 21:00 UTC on June 12, it had attained a compact low-level circulation with more developed convection, prompting the NHC to designate the disturbance Tropical Depression Three-E.[35] Six hours later, Three-E strengthened into a tropical storm and was given the name Carlos after satellite imagery indicated improved organization and convective banding on the system.[36] Carlos strengthened gradually throughout June 13, and reached peak intensity around 15:00 UTC with 50 mph (80 km/h) winds and a minimum pressure of 1000 millibars.[37] However, early on June 14, Carlos' organization began to degrade due to very dry air in its proximity and increasing wind shear.[38] Carlos weakened to a tropical depression at 21:00 UTC that day as most of its convection dissipated.[39] Carlos was almost devoid of convection apart from a small convective burst by the next day.[40] On June 16, Carlos degenerated into a remnant low as all of its convection dissipated due to dry air.[41]

Tropical Storm Dolores

Tropical storm (SSHWS)
 
DurationJune 18 – June 20
Peak intensity70 mph (110 km/h) (1-min);
990 mbar (hPa)
Main article: Tropical Storm Dolores (2021)

On June 15, the NHC first marked the possible development of a low-pressure area located several miles offshore southwestern Mexico.[42] A day later, the low-pressure area formed and was producing disorganized showers and thunderstorms. The disturbance was expected to move into conductive environmental conditions over the next couple of days.[43] On June 18 at 09:00 UTC, the NHC assessed it to have strengthened into Tropical Depression Four-E, after a scatterometer pass indicated a closed circulation alongside surrounding convection becoming more well-defined.[44] Six hours later, the storm's convection became even more pronounced, and the depression strengthened into Tropical Storm Dolores as banding features became established.[45] On June 19 at 15:00 UTC, Dolores made landfall over the Michoacán-Colima border according to satellite imagery.[46] As it moved further inland, it rapidly weakened into a depression on June 20 at 03:00 UTC.[47] At 09:00 UTC on the same day, the NHC declared it as a remnant low as the system moved over mountainous terrain.[48]

Hurricane Enrique

Category 1 hurricane (SSHWS)
 
DurationJune 25 – June 30
Peak intensity90 mph (150 km/h) (1-min);
975 mbar (hPa)

On June 20, NHC noted a possible formation of a low-pressure area near the south of Guatemala and Gulf of Tehuantepec.[49] On June 22, a tropical wave formed over Central America with satellite imagery indicating disorganized showers and thunderstorms.[50] With conductive environmental conditions, the system gradually organized and on June 25 at 09:00 UTC, the NHC assessed the system as a tropical storm, assigning the name Enrique.[51] Satellite imagery also revealed that the storm had developed a low-level circulation, with a scatterometer pass over the storm also showing that it was producing tropical storm-force winds to the southeast of the center.[52][51] The storm's structure had further improved six hours later, with prominent banding features to the south and east.[53] Later, a large convective burst developed over the storm.[54] Enrique continued to intensify throughout the day, with the NHC assessing the system to have strengthened into a category 1 hurricane by 09:00 UTC on June 26, after which the system possessed a well-defined central dense overcast and alongside persistent area of cold cloud tops.[55] An area of overshooting cloud tops signaled that the eyewall was developing.[56] However, its structure degraded shortly afterward due to dry air.[57] Enrique's structure improved later, though dry air still was being entrained into its northern side.[58] On June 28, at 15:00 UTC the convective structure of Enrique had been eroded with the inner core becoming increasingly ragged due to dry air, causing the hurricane to weaken.[59] On the same day at 21:00 UTC the NHC downgraded Enrique to a high end tropical storm as the structure continued to deteriorate and had a partially exposed center.[60] On June 30, at 12:00 UTC, the NHC further downgraded Enrique to a tropical depression as its thunderstorms shrunk to a small area of deep convection.[61] On 21:00 UTC that day, Enrique degenerated into a remnant low in the Gulf of California as all of its convection had dissipated.[62]

Two people died from rip currents in Pie de la Cuesta, Guerrero.[63] At least 207 homes were damaged by landslides and winds caused by Enrique in Guerrero.[64] Heavy rain impacted areas of Manzanillo, Colima, while winds caused minor damage to homes.[65] In Lázaro Cárdenas, Michoacán, areas were inundated by more than 50 cm (19 in) of floodwater.[66] 115,904 customers lost power across Jalisco, although 96% of homes returned with power a couple of hours later.[67] Enrique left damage in parts of Nayarit, with trees being uprooted and falling onto homes and power lines being knocked down, leading to a citywide power outage in Tepic.[68]

Hurricane Felicia

Category 4 hurricane (SSHWS)
 
DurationJuly 14 – July 21
Peak intensity145 mph (230 km/h) (1-min);
947 mbar (hPa)

A tropical wave was noted by the National Hurricane Center (NHC) several hundred miles southwest of Acapulco, on July 11, producing disorganized showers and thunderstorms.[69] The system gradually organized through July 13, as it started producing small but concentrated deep convection.[70] The disturbance acquired a well-defined low-level circulation, which was surrounded by ample banding to its west,[71] prompting the NHC to designate the system as a tropical depression 09:00 UTC on July 14[72] and a tropical storm less than five hours later.[73] After an increase in banding features,[74] and the development of eye at the mid-levels of the atmosphere, Felicia steadily intensified.[75] Felicia obtained hurricane status a Category 1 hurricane on July 15 at 09:00 UTC as it maintained a small, circular central dense overcast and its eye became more well-defined.[76] Twelve hours later, Felicia further intensified into a Category 2 hurricane as an eye became visible on infrared imagery.[77] At 09:00 UTC on July 16, Felicia intensified into a Category 3 hurricane, becoming the first major hurricane of the season.[78] By 18:00 UTC on that day, Felicia strengthened to a Category 4 hurricane with a distinct, 10 nmi (12 mi; 19 km) wide eye and a smooth central dense overcast.[79] On July 17, at 15:00 UTC, Felicia attained its peak intensity of 125 kn (145 mph; 230 km/h) and a minimum barometric pressure of 947 mbar (27.96 inHg).[80] By July 18, Felicia's eye became more cloud filled as the storm began to encounter cooler water temperatures and higher wind shear, which resulted in weakening as it tracked westwards.[81] Early the following morning, Felicia lost major hurricane intensity.[82] The eye of Felicia quickly filled in,[83] and by 15:00 UTC on July 19, Felicia had weakened to a Category 1 hurricane.[84] At 21:00 UTC, Felicia further weakened into a tropical storm, as satellite imagery showed it had only a small amount of deep convection left.[85] Felicia continued to weaken as it lost all deep convection near its center at 09:00 UTC,[86] but it re-strengthened a bit as it managed to redevelop a small area of deep convection north of the estimated low-level center.[87] The NHC issued its last advisory at 21:00 UTC, as Felicia became a tropical depression and entered the Central Pacific, since the storm have lost most of its convection near the low-level center.[88] The Central Pacific Hurricane Center (CPHC) started tracking Felicia and later issued its only bulletin at 03:00 UTC the next day, stating that it became a post-tropical cyclone, as its remaining deep convection dissipated.[89]

Tropical Storm Guillermo

Tropical storm (SSHWS)
 
DurationJuly 17 – July 20
Peak intensity60 mph (95 km/h) (1-min);
999 mbar (hPa)

On July 14, at 18:00 UTC, an area of disorganized showers and thunderstorms formed southeast of southern coast of Mexico in association with a easterly tropical wave.[90] This wave spawned a broad low pressure area the next day.[91] Following an increase in organization, the low pressure area attained organized deep convection and a defined inner-core wind field, which prompted the NHC to upgrade it to a tropical depression on the afternoon of July 17.[92] Twelve hours after its designation, the depression intensified into a tropical storm, following an increase in banding features.[93] However, Guillermo struggled to organize itself as its convective pattern had eroded significantly due to northwesterly vertical wind shear and the presence of cool and dry air, weakening slightly[94] as its low-level circulation center became displaced about 90 nmi (105 mi; 165 km) from the center of deep convection.[95] Guillermo was downgraded to a tropical depression at 21:00 UTC on July 19, as it became a small shapeless area of convection. This was caused by cooler sea surface temperatures and west-northwesterly wind shear.[96] On July 20, at 21:00 UTC, the NHC downgraded Guillermo to a post-tropical cyclone since all convection had dissipated.[97]

Hurricane Hilda

Category 1 hurricane (SSHWS)
 
DurationJuly 30 – August 6
Peak intensity85 mph (140 km/h) (1-min);
985 mbar (hPa)

On July 24, a disturbance formed near south of Gulf of Tehuantepec, which was moving parallel to the offshore of southern Mexico.[98] As it moved farther from the coast of Mexico, the disturbance gradually became organized, and on July 28, a low pressure area formed,[99] as satellite imagery showed that the associated shower activity was showing signs of organization.[100] The low-pressure area further organized, with a pair of ASCAT passes showing that the low-pressure area had strengthened significantly and was producing tropical storm-force winds, with the circulation looking well-defined on satellite imagery. On July 30, it became a tropical storm, which the NHC named Hilda.[101] Hilda intensified to a high-end tropical storm a day later as a central dense overcast developed.[102] Later, Hilda further intensified to a hurricane as a short-lived eye appeared in its central dense overcast.[103] Hilda held a similar appearance the next day, with its center located north of its central dense overcast.[104] Hilda developed a closed mid-level eye the next day, though the low-level and mid-level centers were not stacked due to wind shear.[105] However, it became less organized later that day, with a less distinct eye and an incomplete eyewall.[106] By the next day, Hilda was downgraded to a high-end tropical storm since the eyewall was no longer well-defined, while convection continued to pulse in the southern semicircle.[107] Deep convection continued to wane due to shear, cooler waters, and more stable air.[108] Soon, Hilda was not producing any deep convection, though there were winds of 45 kn (85 km/h; 50 mph) within the cyclone.[109] Over the next day, Hilda continued to weaken due to wind shear and cooler waters.[110] By August 5, Hilda weakened into a tropical depression after a rapid weakening of convection near the center. However, convection resumed pulsing later.[111] On August 6, at 03:00 UTC, Hilda became a post-tropical cyclone, as it became devoid of deep convection due to sub-23 °C (73 °F) sea-surface temperatures.[112][113]

Tropical Storm Jimena

Tropical storm (SSHWS)
 
DurationJuly 30 – August 7
Peak intensity40 mph (65 km/h) (1-min);
1005 mbar (hPa)

On July 26, the NHC noted a disturbance located about 700 miles (1,125 km) south-southwest of the southern tip of Baja California. The system moved parallel to another disturbance which later became Hurricane Hilda.[114] By 21:00 UTC on July 30, the disturbance attained a well-defined center of circulation with sufficient organized convection and was classified as a tropical depression, bearing the designation Nine-E.[115] The depression was initially forecast to become a tropical storm, but failed to do so due to dry air and wind shear caused by nearby Hurricane Hilda. Early on August 1, the system degenerated into a remnant low.[116] Even though Nine-E was a tropical low, the NHC still monitored the system for further development[117] On August 4, it re-intensified into a tropical depression again while maintaining two rainbands in a slightly elongated circulation.[118] On the next day, at 09:00 UTC, the depression intensified into a tropical storm, with the NHC naming it as Jimena, as the storm's deep convection had increased near the low-level center and based on satellite imagery, the storm was producing tropical storm force winds.[119] The convection later diminished on August 6, as it moved over cooler sea-surface temperatures and encountering high wind shear and dry airmass. However, despite all this, Jimena managed its intensity, as it continued to produce tropical storm force winds, based on ASCAT data.[120] A deep convective mass also continued to persist over the center of Jimena.[121] At 21:00 UTC, the NHC issued its last advisory, downgrading the system to a tropical depression as it entered the CPHC's area of responsibility. Its deep convection weakened significantly as it moved over cool sea surface temperatures causing Jimena to weaken.[122] The CPHC later issued its only bulletin for Jimena at 03:00 UTC the next day, stating that Jimena had become a post-tropical cyclone as its deep convection had collapsed completely.[123]

Tropical Storm Ignacio

Tropical storm (SSHWS)
 
DurationAugust 1 – August 4
Peak intensity40 mph (65 km/h) (1-min);
1004 mbar (hPa)

On July 30 at 00:00 UTC, the NHC began monitoring a disturbance off of the Gulf of Tehuantepec.[124] The system had a poor structure due to high wind shear, but gradually consolidated over time. By August 1, the system developed deep convection and became a tropical depression at 21:00 UTC.[125] The depression intensified into a tropical storm at 15:00 UTC on August 2 as a large burst of convection occurred near the center and accordingly assigned it the name Ignacio. The system was experiencing moderate wind shear at the time.[126] By the next day, Ignacio had weakened into a tropical depression as shear increased, which reduced Ignacio's convection to a weakening cluster of thunderstorms west of its circulation center.[127] On August 4 at 03:00 UTC, Ignacio further degenerated into a remnant low as the system became devoid of deep convection near its center.[128]

Tropical Storm Kevin

Tropical storm (SSHWS)
 
DurationAugust 7 – August 12
Peak intensity60 mph (95 km/h) (1-min);
999 mbar (hPa)

On August 5, a disturbance formed a few hundred miles south of the southwestern Mexican coast.[129] The disturbance gradually showed signs of organization on August 6,[130] and on the next day at 03:00 UTC, the well-defined and organized disturbance intensified to a tropical depression, with the NHC designating it as Eleven-E.[131] Three hours later, it further intensified into a tropical storm, with the NHC naming it as Kevin. Banding increased over the southern and western parts of the system's circulation; it also developed a central dense overcast.[132] However, Kevin was affected by persistent wind shear, causing its center to lie to the north of its central dense overcast and most of its convection to be displaced to the southwest.[133] Kevin continued to be affected by wind shear as it moved northwestward.[134] Kevin's convection began to degrade by the next day.[135] On August 12, 09:00 UTC, Kevin was downgraded to a tropical depression, as its remaining convection dissipated, only producing a few small convective bursts.[136] In addition, its low-level center had been displaced 100 nmi (190 km; 120 mi) from the actual center.[136] As it moved towards cooler waters, it further weakened to a remnant low at 15:00 UTC the same day as its convection became further disorganized, no longer being considered as a tropical cyclone.[137]

Hurricane Linda

Hurricane Linda
Current storm status
Category 1 hurricane (1-min mean)
Satellite image
Forecast map
As of:3:00 a.m. MDT (09:00 UTC) August 13
Location:16°24′N 110°36′W / 16.4°N 110.6°W / 16.4; -110.6 (Hurricane Linda) ± 20 nm
About 425 mi (685 km) SW of Cabo Corrientes, Mexico
About 450 mi (725 km) S of the southern tip of Baja California
Sustained winds:80 knots (90 mph; 150 km/h) (1-min mean)
gusting to 90 knots (105 mph; 165 km/h)
Pressure:987 mbar (29.15 inHg)
Movement:WNW at 11 knots (13 mph; 20 km/h)
See more detailed information.

On August 6, an area of disturbed weather was formed, located few hundred miles from the Gulf of Tehuantepec.[138] Later, the disturbance organized itself and became a low pressure area on the next day, which was located few hundred miles south of the coast of Guatemala.[139] On August 9, the low pressure area became more defined, and the satellite imagery showed signs of organization.[140] On the next day, the low pressure area became well-defined and satellite imagery showed increased signs of organization of thundershowers. Furthermore, the system passed over a scatterometer at 03:30 UTC, which showed that the system was producing 25–30 kn (30–35 mph; 45–55 km/h) winds. This data prompted the NHC upgraded to a tropical depression and designated as Twelve-E, at 09:00 UTC.[141] Twelve hours later, it intensified into a tropical storm, with the agency naming it as Linda,[142] as an ASCAT revealed that the system was producing tropical storm force winds near its center. In addition, it developed a well-defined but partially exposed low-level center, because of the presence of moderate to high wind shear.[143] However, Linda continued to strengthen and developed a well-defined mid-level eye.[144] Though the eye feature quickly dissipated due to dry air, Linda continued strengthening.[145] On August 12, at 15:00 UTC, Linda intensified to a Category 1 hurricane,[146] as it developed a eye-like feature once again, but it was obscured by development of new convective bursts near the center.[147]

Current storm information

As of 3:00 a.m. MDT (09:00 UTC) August 13, Hurricane Linda is located within 20 nautical miles of 16°24′N 110°36′W / 16.4°N 110.6°W / 16.4; -110.6 (Linda), about 425 mi (685 km) southwest of Cabo Corrientes, Mexico and about 450 mi (725 km) south of the southern tip of Baja California. Maximum sustained winds are 80 knots (90 mph; 150 km/h), with gusts up to 90 knots (105 mph; 165 km/h). The minimum barometric pressure is 987 mbar (29.15 inHg), and the system is moving west-northwest at 11 knots (13 mph; 20 km/h). Hurricane-force winds extend outward up to 25 miles (35 km) from the center and tropical-storm-force winds extend outward up to 175 miles (280 km).

For the latest official information, see:

Other systems

See also: 2021 Pacific typhoon season § Tropical Depression 16W

On August 6, the CPHC began monitoring a tropical disturbance that was about 1,000 miles (1,600 km) south-southwest of Honolulu, Hawaii, with a low chance of tropical cyclone development within a span of five days due to expected unfavorable conditions at the time.[148] Moving slowly to the west,[149] chances remained low until the system crossed the International Date Line on August 10,[150] causing the Japan Meteorological Agency (JMA) to start monitoring it.[151] It developed into a tropical depression on the same day, with the Joint Typhoon Warning Center (JTWC) designating it as 16W.[152] As of now, the tropical depression remains active.

Storm names

See also: Tropical cyclone naming § Eastern Pacific Ocean

The following names will be used for named storms that form in the northeastern Pacific Ocean during 2021. Retired names, if any, will be announced by the World Meteorological Organization during the joint 44th Sessions of the RA IV Hurricane Committee in the spring of 2022. The names not retired from this list will be used again in the 2027 season.[153] This is the same list used in the 2015 season, with the exception of the name Pamela, which replaced Patricia.

  • Andres
  • Blanca
  • Carlos
  • Dolores
  • Enrique
  • Felicia
  • Guillermo
  • Hilda
  • Ignacio
  • Jimena
  • Kevin
  • Linda (active)
  • Marty (unused)
  • Nora (unused)
  • Olaf (unused)
  • Pamela (unused)
  • Rick (unused)
  • Sandra (unused)
  • Terry (unused)
  • Vivian (unused)
  • Waldo (unused)
  • Xina (unused)
  • York (unused)
  • Zelda (unused)

In wake of the 2020 Atlantic hurricane season, after the Greek alphabet was deemed too confusing to use, the WMO decided to end the use of the Greek alphabet as an auxiliary list. Therefore, beginning this season, if all 24 names above are used, subsequent storms will take names from a new supplemental naming list. The auxiliary list will be used if necessary in all seasons.[154]

For storms that form in the Central Pacific Hurricane Center's area of responsibility, encompassing the area between 140 degrees west and the International Date Line, all names are used in a series of four rotating lists.[155] The next four names that will be slated for use in 2021 are shown below.

  • Hone (unused)
  • Iona (unused)
  • Keli (unused)
  • Lala (unused)

Season effects

This is a table of all the storms and that have formed in the 2021 Pacific hurricane season. It includes their duration, names, landfall(s), denoted in parentheses, 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 tropical wave, or a low, and all the damage figures are in 2021 USD.

Saffir–Simpson scale
TD TS C1 C2 C3 C4 C5
2021 Pacific hurricane season season statistics
Storm
name 		Dates active Storm category
at peak intensity 		Max 1-min
wind
mph (km/h) 		Min.
press.
(mbar) 		Areas affected Damage
(USD) 		Deaths Ref(s)
Andres May 9 – 11 Tropical storm 40 (65) 1005 Southwestern Mexico Minimal None [15]
Blanca May 30 – June 4 Tropical storm 60 (95) 998 None None None
Carlos June 12 – 16 Tropical storm 50 (85) 1000 None None None
Dolores June 18 – 20 Tropical storm 70 (110) 990 Southwestern Mexico, Western Mexico $50 million 3 [156][157][158]
Enrique June 25 – 30 Category 1 hurricane 90 (150) 975 Southwestern Mexico, Baja California Peninsula $50 million 2 [158]
Felicia July 14 – 21 Category 4 hurricane 145 (230) 947 None None None
Guillermo July 17 – 20 Tropical storm 60 (95) 999 Clarion Island None None
Hilda July 30 – August 6 Category 1 hurricane 85 (140) 985 None None None
Jimena July 30 – August 7 Tropical storm 40 (65) 1005 None None None
Ignacio August 1 – 4 Tropical storm 40 (65) 1004 Clarion Island None None
Kevin August 7 – 12 Tropical storm 60 (95) 999 Clarion Island None None
Linda August 10 – Present Category 1 hurricane 90 (150) 985 None None None
Season aggregates
12 systems May 9 – Season ongoing   145 (230) 947 $100 million 5  

See also

Notes

  1. ^ All damage totals are valued as of 2021 and in United States dollars, unless otherwise noted.
  2. ^ The totals represent the sum of the squares for every (sub)tropical storm's intensity of over 33 knots (38 mph, 61 km/h), divided by 10,000. Calculations are provided at Talk:2021 Pacific hurricane season/ACE calcs.

References

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  137. ^ Robbie Berg (August 12, 2021). "Tropical Storm Kevin Advisory Number 21". www.nhc.noaa.gov. Miami, Florida: National Hurricane Center. Retrieved August 13, 2021.
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  139. ^ John Cangialosi (August 7, 2021). "Five Day Graphical Tropical Cyclone Outlook". www.nhc.noaa.gov. Miami, Florida: National Hurricane Center. Retrieved August 10, 2021.
  140. ^ Stacy Stewart (August 9, 2021). "Five Day Graphical Tropical Cyclone Outlook". www.nhc.noaa.gov. Miami, Florida: National Hurricane Center. Retrieved August 10, 2021.
  141. ^ Brad Reinhart; Richard Pasch (August 10, 2021). "Tropical Depression Twelve-E Discussion Number 1". www.nhc.noaa.gov. Miami, Florida: National Hurricane Center. Retrieved August 10, 2021.
  142. ^ Andy Latto (August 10, 2021). "Tropical Storm Linda Advisory Number 3". www.nhc.noaa.gov. Miami, Florida: National Hurricane Center. Retrieved August 11, 2021.
  143. ^ Andy Latto (August 10, 2021). "Tropical Storm Linda Discussion Number 3". www.nhc.noaa.gov. Miami, Florida: National Hurricane Center. Retrieved August 11, 2021.
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  146. ^ Robbie Berg (August 12, 2021). "Hurricane Linda Advisory Number 10". www.nhc.noaa.gov. Miami, Florida: National Hurricane Center. Retrieved August 13, 2021.
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  158. ^ a b Global Catastrophe Recap June 2021 (PDF) (Report). Aon. July 9, 2021. Retrieved July 12, 2021.{{cite report}}: CS1 maint: url-status (link)
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