2005 Pacific hurricane season

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2005 Pacific hurricane season
2005 Pacific hurricane season summary map.png
Season summary map
Seasonal boundaries
First system formedMay 17, 2005
Last system dissipatedOctober 20, 2005
Strongest storm
Name Kenneth
  Maximum winds130 mph (215 km/h)
(1-minute sustained)
  Lowest pressure947 mbar (hPa; 27.97 inHg)
Seasonal statistics
Total depressions17
Total storms15
Hurricanes7
Major hurricanes
(Cat. 3+)
2
Total fatalities6 total
Total damage$12 million (2005 USD)
Related articles
Pacific hurricane seasons
2003, 2004, 2005, 2006, 2007

The 2005 Pacific hurricane season was a near-average Pacific hurricane season which produced fifteen named storms, seven hurricanes and two major hurricanes. It was also the second consecutive season in which no tropical cyclone of at least tropical storm intensity made landfall. The season officially began on May 15 in the East Pacific Ocean, and on June 1 in the Central Pacific; they ended on November 30. These dates conventionally delimit the period of each year when most tropical cyclones form in the Pacific basin. However, the formation of tropical cyclones is possible at any time of the year.

Contents

Activity began with the formation of Hurricane Adrian, the fourth-earliest-forming tropical storm on record in the basin at the time. Adrian led to flash flooding and several landslides across Central America, resulting in five deaths and $12 million (2005 USD) in damage. Tropical storms Calvin and Dora caused minor damage along the coastline, while Tropical Storm Eugene led to one death in Acapulco. In early October, Otis produced tropical storm-force winds and minor flooding across the Baja California peninsula. The remnants of Tropical Depression One-C in the central Pacific, meanwhile, caused minor impacts in Hawaii. The strongest storm of the season was Hurricane Kenneth, which attained peak winds of 130 mph (215 km/h) over the open Pacific.

Pre-season forecasts

Predictions of tropical activity in the 2005 season
SourceDateNamed
storms
HurricanesMajor
hurricanes
Refs
EasternAverage15–1694–5 [1]
SMNFebruary 200517107 [2]
NOAAMay 16, 200511–156–82–4 [1]
EasternActual activity1572 [3]
CentralAverage4–51 [4]
NOAAMay 16, 20052–3 [4]
CentralActual activity221

The first forecast for the 2005 season was produced by the Servicio Meteorológico Nacional (SMN) in the second month of the year. In their report, the organization cited a list of analog years – 1952, 1957, 1985, 1991, and 1993 – with similar oceanic and atmospheric patterns. An overall total of 17 tropical storms, 10 hurricanes, and 7 major hurricanes was forecast, above the average. [2] The National Oceanic and Atmospheric Administration (NOAA), meanwhile, released their seasonal outlook on May 16, predicting 11 to 15 named storms, 6 to 8 hurricanes, and 2 to 4 major hurricanes. The organization noted that when the Atlantic basin was busier than average, as expected in 2005, the eastern Pacific generally saw lesser activity. [1] That same day, NOAA issued a forecast for activity across the central Pacific, expecting 2 to 3 tropical cyclones to occur across the basin. A normal season averaged 4 to 5 tropical cyclones, including 1 hurricane. A near-normal El Niño–Southern Oscillation existed across the equatorial Pacific throughout 2005, which indicated conditions generally less conducive for activity there. [4]

Seasonal summary

Hurricane Otis (2005)Hurricane Kenneth (2005)Hurricane Adrian (2005)Saffir–Simpson scale2005 Pacific hurricane season
Three simultaneous tropical cyclones existed on September 22. Jova, Kenneth and Max 2005 Pacific hurricane season three active storms.jpg
Three simultaneous tropical cyclones existed on September 22. Jova, Kenneth and Max

The Accumulated Cyclone Energy (ACE) index for the 2005 Pacific hurricane season as calculated by Colorado State University using data from the National Hurricane Center was 96.6 units. [nb 1] [5] 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).

The season's first tropical cyclone, Adrian, developed on May 17 and reached its peak as a Category 1 hurricane. Named storms are infrequent in May, with one tropical storm every two years and a hurricane once every four years. [6] At the time, Adrian was the fourth earliest tropical cyclone to form in the eastern Pacific since reliable record-keeping began in 1971. Activity throughout the remainder of the season was far less notable, with 16 tropical cyclones, 15 named storms, 7 hurricanes, and 2 major hurricanes. The long-term 1971–2004 average suggests an average season to feature 15 named storms, 9 hurricanes, and 4 major hurricanes. October in particular was notably quiet, with the formation of only one tropical depression; only three other seasons, 1989, 1995, and 1996, ended the month without the designation of a named storm. [7]

Analysis of the environment suggested that most storms formed during the passage of the positive Madden–Julian oscillation and its associated upper-air divergence, which is favorable for tropical cyclone formation. Extended reprieves in tropical activity were connected to upper-level convergence. Another factor that led to a below-average season was the presence of cooler than average ocean temperatures during the peak months, helping to extend the period of lesser activity that began throughout the eastern Pacific around 1995. [8]

Systems

Hurricane Adrian

Category 1 hurricane (SSHWS)
Hurricane Adrian May 19 915.jpg   Adrian 2005 track.png
DurationMay 17 – May 21
Peak intensity80 mph (130 km/h) (1-min);
982  mbar  (hPa)

In early to mid-May, several areas of disturbed weather moving westward from Central America aided in the formation of a broad area of low pressure well south of Mexico. A poorly-defined tropical wave became intertwined with the larger system over subsequent days, leading to the formation of a tropical depression at 18:00 UTC on May 17. The nascent cyclone intensified into Tropical Storm Adrian six hours later. Despite the effects of moderate wind shear, the system steadily organized as convection became concentrated around the center, and Adrian attained its peak with winds of 80 mph (130 km/h) at 18:00 UTC on May 19. Environmental conditions became less conducive thereafter as downsloping from mountains along the coastline of Mexico combined with the already-marginal upper-level winds. The cyclone fell to tropical storm intensity at 00:00 UTC on May 20, tropical depression intensity at 18:00 UTC that day, and dissipated at 06:00 UTC on May 21 along the coastline of Honduras in the Gulf of Fonseca. [9]

Hurricane Adrian was responsible for five deaths: two died in a mudslide in Guatemala, [10] a pilot crashed in high winds and a person drowned in El Salvador, [11] and a person was killed by flooding in Nicaragua. [9] Heavy rainfall up to 16.4 in (418.4 mm) in El Salvador led to landslides, damaged roads, and flash flooding. [12] In Honduras, a few shacks were destroyed, a few roads were blocked, and some flooding occurred; similar effects were noted in Guatemala and Nicaragua. [13] Monetary losses topped $12 million (2005 USD) in El Salvador alone. [14]

Tropical Storm Beatriz

Tropical storm (SSHWS)
Beatriz 2005-06-23 2020Z.jpg   Beatriz 2005 track.png
DurationJune 21 – June 24
Peak intensity50 mph (85 km/h) (1-min);
1000  mbar  (hPa)

A tropical wave emerged into the Atlantic on June 8 and entered the East Pacific over a week later, merging with a number of disturbances within a broad area of low pressure south of Mexico on June 17. The disturbance's cloud pattern—although initially elongated—steadily coalesced, leading to the formation of a tropical depression at 18:00 UTC on June 21 and further intensification into Tropical Storm Beatriz at 12:00 UTC on June 22. The system battled easterly wind shear and marginal ocean temperatures on its west-northwest track, attaining peak winds of 50 mph (85 km/h) the next day before weakening to tropical depression intensity at 00:00 UTC on June 24. Six hours later, it degenerated into a remnant low which slowed and turned southward prior to dissipating early on June 26. [15]

Tropical Storm Calvin

Tropical storm (SSHWS)
Calvin 2005-06-27 1955Z.jpg   Calvin 2005 track.png
DurationJune 26 – June 29
Peak intensity50 mph (85 km/h) (1-min);
1000  mbar  (hPa)

A tropical wave emerged off the western coast of Africa on June 11, remaining inconspicuous until reaching the southwestern Caribbean Sea eight days later. The system entered the eastern Pacific on June 21, where steady organization led to the formation of a tropical depression around 06:00 UTC on June 26 while located 330 mi (530 km) south-southeast of Acapulco, Mexico. Upon formation, the cyclone moved north-northwest and then west-northwest under the dictation of a subtropical ridge to its north. It intensified into Tropical Storm Calvin at 18:00 UTC on June 26, attaining a peak intensity of 50 mph (85 km/h) early the next morning in conjunction with a well-defined spiral band on radar. [16] [17] Calvin then dove west-southwest and weakened as strong wind shear exposed the storm's circulation; it fell to tropical depression status at 12:00 UTC on June 28 and further degenerated to a remnant low by 06:00 UTC the next day. The low moved generally westward before dissipating well southwest of the Baja California peninsula on July 3. [16] As a tropical cyclone, Calvin caused only minor damage to roofs and highways, flooded a house, and toppled two trees. [18]

Tropical Storm Dora

Tropical storm (SSHWS)
TS Dora 2005.jpg   Dora 2005 track.png
DurationJuly 4 – July 6
Peak intensity45 mph (75 km/h) (1-min);
1002  mbar  (hPa)

The genesis of Tropical Storm Dora can be attributed to a westward-moving tropical wave that emerged off Africa on June 18. By July 3, the wave passed through the Gulf of Tehuantepec, where broad cyclonic flow began to develop along its axis. Following further organization, the disturbance intensified into a tropical depression by 00:00 UTC on July 4 and further strengthened into Tropical Storm Dora six hours later. The cyclone moved north-northwest and then west-northwest, paralleling the coastline of Mexico under the influence of a subtropical ridge, [19] where landslides and mudslides cut communication to 12 mountain villages. [20] Under a moderate easterly wind shear regime, Dora ultimately changed little in strength, peaking with winds of 45 mph (75 km/h) as the center became obscured on the eastern edge of extremely deep convection. [21] A track over colder waters caused the storm to fall to tropical depression intensity late on July 5 and degenerate into a remnant low by 12:00 UTC on July 6. The low then dissipated six hours later. [19]

Tropical Storm Eugene

Tropical storm (SSHWS)
Tropical Storm Eugene 1750 UTC July 19 2005.jpg   Eugene 2005 track.png
DurationJuly 18 – July 20
Peak intensity70 mph (110 km/h) (1-min);
989  mbar  (hPa)

A tropical wave first identified over the Caribbean Sea on July 10 entered the eastern Pacific four days later. The disturbance organized as banding features became distinct, leading to the formation of a tropical depression by 06:00 UTC on July 18. The cyclone intensified into Tropical Storm Eugene six hours later as a mid-level ridge steered it generally northwest. Amid an environment of light wind shear, Eugene steadily organized to reach peak winds of 70 mph (110 km/h) by late on July 19, [22] although it is possible the storm briefly attained hurricane intensity. [23] Already tracking over cooler waters, Eugene quickly weakened immediately after its peak, becoming a tropical depression by 12:00 UTC on July 20 and degenerating into a remnant low twelve hours later. The low continued northwest before losing its character on July 22. [22] As a tropical cyclone, Eugene flooded streets (which displaced six vehicles), left at least 30 houses inundated, and caused one death after a man's boat overturned. [24]

Tropical Depression One-C

Tropical depression (SSHWS)
01C 2005-08-04 2235Z.jpg   1-C 2005 track.png
DurationAugust 3 – August 4
Peak intensity30 mph (45 km/h) (1-min);
1008  mbar  (hPa)

In late July to early August, an organized thunderstorm cluster persisted within the Intertropical Convergence Zone (ITCZ). Upon further development, the disturbance was designated as a tropical depression as it tracked swiftly west, the first and only cyclone to form in the central Pacific throughout the season. Despite initial forecasts of a minimal tropical storm, increasing wind shear and cooler ocean temperatures prompted the depression to instead dissipate by 00:00 UTC on August 5, having only attained peak winds of 30 mph (45 km/h). [25]

As a tropical cyclone, Tropical Depression One-C had no impact on land. However, the remnants of the depression dropped moderate to heavy rainfall in Hawaii, particularly on the Island of Hawaii. Rainfall totals measured up to 8.8 in (223.5 mm) in Glenwood, Hawaii. [25] Flash floods was reported in Kona and Ka‘ū, while minor flooding occurred in Hilo, Hamakua, and Kealakekua. In addition, minor street flooding was reported in several cities on that island; most notably, a nearly overflown drainage ditch threatened to submerge the Hawaii Belt Road. [26] Some coffee plants were damaged. [27]

Hurricane Fernanda

Category 1 hurricane (SSHWS)
Hurricane Fernanda 2005.jpg   Fernanda 2005 track.png
DurationAugust 9 – August 16
Peak intensity85 mph (140 km/h) (1-min);
978  mbar  (hPa)

A vigorous tropical wave observed over western Africa in late July maintained vigor until passing the Windward Islands, becoming disorganized as it moved across South America and then into the eastern Pacific on August 5. Convection gradually redeveloped south of Mexico, leading to the formation of a tropical depression by 12:00 UTC on August 9 and intensification into Tropical Storm Fernanda twelve hours later. The nascent cyclone continued on a west-northwesterly course amid a favorable shear regime; it became a hurricane at 06:00 UTC on August 11 and attained peak winds of 85 mph (140 km/h) early the next day as a ragged eye became discernible. After leveling off in intensity, Fernanda fell to tropical storm intensity early on August 14, weakened to a tropical depression late on August 15, and degenerated into a remnant low by 06:00 UTC on August 16, all the while diving west-southwest. The low produced intermittent convection until dissipating the next day. [28]

Tropical Storm Greg

Tropical storm (SSHWS)
Tropical Storm Greg 2005.jpg   Greg 2005 track.png
DurationAugust 11 – August 15
Peak intensity50 mph (85 km/h) (1-min);
1000  mbar  (hPa)

A tropical wave that first crossed the western coastline of Africa on July 27 entered the eastern Pacific ten days later, gradually developing into a tropical depression by 06:00 UTC on August 11. The depression trekked west-northwest along the southern periphery of a subtropical ridge, intensifying into Tropical Storm Greg six hours after formation and reaching peak winds of 50 mph (85 km/h) by 00:00 UTC on August 12 as deep convection flared near the center and upper-level outflow became well established. [29] [30] Northerly shear from nearby Fernanda and a nearby upper-level trough caused Greg to level off and maintain its status as a low-end tropical storm for several days as steering currents collapsed. Drifting south, stronger upper-level winds caused Greg to weaken to tropical depression intensity by 18:00 UTC on August 14 before degenerating into a remnant low by 00:00 UTC on August 16. The low was absorbed into the ITCZ shortly thereafter. [29]

Hurricane Hilary

Category 2 hurricane (SSHWS)
Hilary 2005-08-22 0530Z.jpg   Hilary 2005 track.png
DurationAugust 19 – August 25
Peak intensity105 mph (165 km/h) (1-min);
970  mbar  (hPa)

A tropical wave moved off the western coast of Africa on August 4, eventually organizing into a tropical depression south of Mexico by 18:00 UTC on August 19. Twelve hours later, the depression intensified into Tropical Storm Hilary. The newly named system tracked west after formation, steered on the south side of a subtropical ridge. Favorable upper-level winds and warm ocean temperatures allowed it to quickly intensify, and Hilary became a hurricane by 00:00 UTC on August 21. After leveling off briefly, the cyclone attained its peak as a Category 2 hurricane with winds of 105 mph (185 km/h) early the next morning, [31] consistent with a ragged eye on infrared satellite imagery. [32] Hilary entered a progressively cooler ocean after peak, resulting in the loss of deep convection. The system fell to tropical storm intensity late on August 24, tropical depression intensity late on August 25, and degenerated to a remnant low by 00:00 UTC on August 26. The low moved generally west until dissipating early on August 28. [31]

Tropical Storm Irwin

Tropical storm (SSHWS)
Irwin 2005-08-26 2025Z.jpg   Irwin 2005 track.png
DurationAugust 25 – August 28
Peak intensity50 mph (85 km/h) (1-min);
1000  mbar  (hPa)

The formation of Irwin can be traced to a tropical wave that emerged off Africa on August 10. It continued west, fracturing into two portions near the Leeward Islands; the northern half aided in the formation of Hurricane Katrina, whereas the southern portion continued into the eastern Pacific. Steady organization led to the formation of a tropical depression by 12:00 UTC on August 25 and intensification into a tropical storm twelve hours later. [33] With the center located on the edge of deep convection, [34] Irwin attained peak winds of 50 mph (85 km/h) early on August 26 before northeasterly wind shear prompted weakening. The cyclone fell to tropical depression intensity early on August 28 and further degenerated to a remnant low by 18:00 UTC on August 28. The low moved west and then southwest until dissipating on September 3. [33]

Hurricane Jova

Category 3 hurricane (SSHWS)
Hurricane Jova 2005-09-19 2248z.jpg   Jova 2005 track.png
DurationSeptember 12 – September 25
Peak intensity125 mph (205 km/h) (1-min);
951  mbar  (hPa)

A tropical wave emerged off the western coast of Africa on August 28. Similar to the setup that spawned Irwin, the northern half of the wave fractured and led to the formation of Hurricane Maria, whereas the southern part of the wave continued into the eastern Pacific on September 4. The disturbance initially changed little in organization; an increase in convection on September 12, however, aided in the formation of a tropical depression by 00:00 UTC that day. Affected by moderate easterly shear, the depression failed to intensify into Tropical Storm Jova until 00:00 UTC on September 15. The cyclone intensified at a faster rate thereafter, attaining hurricane intensity early the next day as it turned west-southwest. Jova crossed into the central Pacific early on September 18, where environmental conditions favored continued intensification. As the storm moved into the basin, it abruptly turned northwest toward a weakness in the subtropical ridge. [35]

Nearby dry air acted to temporarily but significantly weaken Jova's spiral banding despite a favorable upper-level environment. [36] By 12:00 UTC on September 19, however, it intensified into the first major hurricane – a Category 3 or larger on the Saffir–Simpson hurricane wind scale – of the season; twelve hours later, it attained peak winds of 125 mph (205 km/h). Cooler ocean temperatures took their toll on Jova as it progressed westward, with Jova falling to tropical storm intensity early on September 23, dropping to tropical depression intensity early on September 24, and ultimately dissipating by 06:00 UTC on September 25 a few hundred miles north of Hilo, Hawaii. [35]

Hurricane Kenneth

Category 4 hurricane (SSHWS)
Kenneth 2005-09-18 2205Z.jpg   Kenneth 2005 track.png
DurationSeptember 14 – September 30
Peak intensity130 mph (215 km/h) (1-min);
947  mbar  (hPa)

A tropical wave led to the formation of a tropical depression well southwest of the Baja California peninsula by 18:00 UTC on September 14. On a generally westward track, light wind shear and warm ocean temperatures allowed the depression to rapidly intensify, becoming Tropical storm Kenneth twelve hours after formation and further intensifying into a hurricane by 00:00 UTC on September 16. [37] The storm underwent an eyewall replacement cycle later that day, [38] temporarily halting the storm's development. By 06:00 UTC on September 17, however, Kenneth attained major hurricane status, and by 12:00 UTC the next morning, it attained its peak as a Category 4 hurricane with winds of 130 mph (215 km/h). [37]

Steering currents collapsed after peak, causing the storm to move erratically, but generally toward the west. Kenneth fell to tropical storm intensity late on September 20, but a brief reprieve in these winds allowed it to regain hurricane strength early on September 25. The hurricane entered the central Pacific on September 26 and weakened to a tropical storm again as south-southwesterly wind shear increased. After little change in strength for several days, Kenneth weakened to a tropical depression early on September 29 and ultimately dissipated just east of Hawaii by 00:00 UTC on September 31. [37] The remnants of Kenneth interacted with an upper-level trough, producing up to 12 in (305 mm) on Oahu. Lake Wilson and the Kaukonahua Stream both overflowed their banks as a result. [39] A few homes were flooded along Hawaii Route 61 by up to a foot of flowing water. [40] Waves of 8–10 ft (2–3 m) affected the coastline of the Hawaiian Islands. [41]

Tropical Storm Lidia

Tropical storm (SSHWS)
Lidia 2005-09-17 1820Z.jpg   Lidia 2005 track.png
DurationSeptember 17 – September 19
Peak intensity40 mph (65 km/h) (1-min);
1005  mbar  (hPa)

In mid-September, a series of tropical waves entered the eastern Pacific from the Caribbean Sea. One of these waves led to the formation of a tropical depression by 12:00 UTC on September 17, which intensified into Tropical Storm Lidia and attained peak winds of 40 mph (65 km/h) six hours later. [42] Initial forecasts were of low confidence, with forecasters citing uncertainty in whether Lidia or a developing disturbance to its east would become the dominant cyclone. [43] Nearly stationary, the cyclone's cloud pattern soon became distorted by the much larger circulation of developing Tropical Storm Max. Lidia weakened to a tropical depression late on September 18 and was completely absorbed by Max twelve hours later. [42]

Hurricane Max

Category 1 hurricane (SSHWS)
Max 2005 MODIS crop.jpg   Max 2005 track.png
DurationSeptember 18 – September 22
Peak intensity85 mph (140 km/h) (1-min);
981  mbar  (hPa)

A tropical wave exited Africa on September 4, entering the eastern Pacific nine days later. The disturbance was initially slow to organize due to its broad nature, but finally began to show signs of organization early on September 18 as the system approached a stalled-out Tropical Storm Lidia. Remnants of Hurricane Max brought a weak cold front, heavy rainfall in Southern California on September 20. The system became a tropical depression by 12:00 UTC that day and intensified into Tropical Storm Max six hours later, simultaneously absorbing the weaker, much smaller Lidia. The storm turned northwest on the periphery of a subtropical ridge and continued to develop in a light wind shear environment. Max became a hurricane by 00:00 UTC on September 20 and attained peak winds of 85 mph (140 km/h) twelve hours later, as a large but well-defined eye became apparent. It began steady weakening shortly thereafter as the storm entered cooler waters, falling to tropical storm intensity early on September 21 and further to tropical depression status early the next day as a mid-level ridge forced it back west. Max degenerated to a remnant low by 18:00 UTC on September 22, which then drifted south before dissipating on September 26. [44]

Tropical Storm Norma

Tropical storm (SSHWS)
TS Norma 24 sept 2005.jpg   Norma 2005 track.png
DurationSeptember 23 – September 27
Peak intensity60 mph (95 km/h) (1-min);
997  mbar  (hPa)

An area of disturbed weather formed south of Mexico on September 19, followed by the formation of a broad area of low pressure within the disturbance two days later. A few small vortices were observed within the broad low over subsequent days, one of which cled to the formation of a tropical depression by 00:00 UTC on September 23. On a west-northwest course, the depression intensified into Tropical Storm Norma twelve hours later and ultimately attained peak winds of 60 mph (95 km/h) by 18:00 UTC on September 24 as the circulation became centrally located within the convection and banding features developed. Norma turned northwest as easterly wind shear increased, causing it to weaken to a tropical depression by 18:00 UTC on September 26 and degenerate to a remnant low a day later. The low turned south and east, persisting for several days before dissipating on October 1. [45]

Hurricane Otis

Category 2 hurricane (SSHWS)
Hurricane Otis 2005.jpg   Otis 2005 track.png
DurationSeptember 28 – October 3
Peak intensity105 mph (165 km/h) (1-min);
970  mbar  (hPa)

A tropical wave moved off Africa on September 9, the northern half of which led to the formation of Hurricane Philippe. After emerging into the eastern Pacific nearly two weeks later, the system showed signs of organization, attaining tropical depression status by 00:00 UTC on September 28. It drifted west-southwest before turning northwest on September 29, at which time it intensified into Tropical Storm Otis. A favorable environment allowed the storm to become a hurricane early on September 30 and attain peak winds of 105 mph (165 km/h) by 06:00 UTC on October 1. Steering currents weakened after peak, allowing Otis to meander into cooler waters offshore the Baja California peninsula. It weakened to a tropical storm early on October 2, weakened to a tropical depression early on October 3, and degenerated to a remnant low by 00:00 UTC on October 4. The low drifted southwest and dissipated the next day. [46]

Although the center of Otis remained offshore, Cabo San Lucas recorded sustained winds of 49 mph (79 km/h), with gusts to 63 mph (101 km/h). [47] Periods of heavy rainfall resulted in minor flooding across the southern portions of the Baja California peninsula. Offshore, two ships reported tropical storm-force winds. [46]

Tropical Depression Sixteen-E

Tropical depression (SSHWS)
Tropical Depression 16E 2005.jpg   16-E 2005 track.png
DurationOctober 15 – October 20
Peak intensity35 mph (55 km/h) (1-min);
1005  mbar  (hPa)

A tropical depression developed from a tropical wave that emerged off Africa on September 28. The wave entered the eastern Pacific over two weeks later, still embedded within the ITCZ. Deep convection and a better defined circulation became established as the system detached from the feature, leading to the formation of a tropical depression by 00:00 UTC on October 15. Steered on the south side of the Mexican subtropical ridge, the depression organized as extremely deep convection burst over its center; this led to the formation of an eye-like feature on microwave imagery, and it is possible the depression briefly attained tropical storm intensity. Shortly thereafter, however, easterly wind shear exposed the low-level center, and the depression degenerated to a remnant low by 00:00 UTC on October 18. [48]

The remnant low continued westward, now steered by low-level easterly flow across the basin. Early on October 19, deep convection began to reform near the circulation, leading to the re-designation of a tropical depression by 12:00 UTC that day. Like its previous incarnation, however, a combination of dry air and southeasterly wind shear prevented the cyclone from intensifying to tropical storm status, with only a few curved band in its northern semicircle. Steady weakening occurred until the depression degenerated to a remnant low for a second time around 00:00 UTC on October 21. The remnant low turned southwestward before becoming reabsorbed into the ITCZ well southwest of the Baja California peninsula twelve hours later. [48]

Storm names

The following list of names was used for named storms that formed in the North Pacific Ocean east of 140°W during 2005. [49] This was the same list used for the 1999 season. [50] No names were retired by the World Meteorological Organization following the season (despite a formal request by Hawaii State Civil Defense that Kenneth be retired); [51] therefore, this list was used again for the 2011 season. [52]

  • Adrian
  • Beatriz
  • Calvin
  • Dora
  • Eugene
  • Fernanda
  • Greg
  • Hilary
  • Irwin
  • Jova*
  • Kenneth *
  • Lidia
  • Max
  • Norma
  • Otis
  • Pilar (unused)
  • Ramon (unused)
  • Selma (unused)
  • Todd (unused)
  • Veronica (unused)
  • Wiley (unused)
  • Xina (unused)
  • York (unused)
  • Zelda (unused)

For named storms that form in the North Pacific between 140°W and the International Date Line, 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. [49] No named storms formed within the region in 2005. Named storms in the table above that crossed into the area during the year are noted (*). [53]

Season effects

This is a table of all of the storms that formed in the 2005 Pacific hurricane season. It includes their name, duration, peak classification and intensities, areas affected, damage, 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 2005 USD.

Saffir–Simpson scale
TDTSC1C2C3C4C5
2005 Pacific hurricane season statistics
Storm
name
Dates activeStorm category
at peak intensity
Max 1-min
wind
mph (km/h)
Min.
press.
(mbar)
Areas affectedDamage
(USD)
DeathsRef(s)
Adrian May 17 – 21Category 1 hurricane80 (130)982 Guatemala, El Salvador, Nicaragua, Honduras $12 million5
BeatrizJune 21 – 24Tropical storm50 (85)1000NoneNoneNone
CalvinJune 26 – 29Tropical storm50 (85)1000Southwestern MexicoMinimalNone
DoraJuly 4 – 6Tropical storm45 (75)1002Southwestern MexicoMinimalNone
EugeneJuly 18 – 20Tropical storm70 (110)989 Baja California Peninsula Minimal1
One-CAugust 3 – 4Tropical depression30 (45)1008NoneNoneNone
FernandaAugust 9 – 16Category 1 hurricane85 (140)978NoneNoneNone
GregAugust 11 – 15Tropical storm50 (85)1000NoneNoneNone
HilaryAugust 19 – 25Category 2 hurricane105 (165)970NoneNoneNone
IrwinAugust 25 – 28Tropical storm50 (85)1000Southwestern MexicoNoneNone
JovaSeptember 12 – 25Category 3 hurricane125 (205)951NoneNoneNone
Kenneth September 14 – 30Category 4 hurricane130 (215)947 Hawaii NoneNone
LidiaSeptember 17 – 19Tropical storm40 (65)1005NoneNoneNone
MaxSeptember 18 – 22Category 1 hurricane85 (140)981NoneNoneNone
NormaSeptember 23 – 27Tropical storm60 (95)997NoneNoneNone
Otis September 28–October 3Category 2 hurricane105 (165)970Western Mexico, Baja California Sur MinimalNone
Sixteen-EOctober 15 – 20Tropical depression35 (55)1005NoneNoneNone
Season aggregates
17 systemsMay 17 – October 20 130 (215)947$12 million6 

See also

Notes

  1. The total represents the sum of the squares of the maximum sustained wind speed (knots) for every (sub)tropical storm's intensity of over 33 knots (38 mph, 61 km/h), divided by 10,000 while they are above that threshold; therefore, tropical depressions are not included.

Related Research Articles

<span class="mw-page-title-main">2004 Pacific hurricane season</span> Hurricane season in the Pacific Ocean

The 2004 Pacific hurricane season was unusual in that no tropical cyclones of at least tropical storm intensity made landfall, the first such occurrence since 1991. The season was also below-average in terms of named storms and hurricanes, near-average in terms of major hurricanes. The season officially began on May 15 in the eastern Pacific, and on June 1 in the central Pacific; it officially ended in both basins on November 30. These dates conventionally delimit the period during each year when a majority of tropical cyclones form. The season was reflected by an accumulated cyclone energy (ACE) index of 71 units.

<span class="mw-page-title-main">1993 Pacific hurricane season</span> Hurricane season in the Pacific Ocean

The 1993 Pacific hurricane season included more than double the average number of major hurricanes – Category 3 or stronger cyclones on the Saffir–Simpson scale. This activity was the result of an El Niño event, which is the main factor contributing to above-average activity across the Pacific basin. The season featured 15 named storms, 11 hurricanes, and 9 major hurricanes. While the number of named storms was near the long-term average, the number of hurricanes was above the average of 8, and the number of major hurricanes far exceeded the long-term average of 4. Seasonal activity began on May 17 and ended on November 8, within the confines of a traditional hurricane season which begins on May 15 in the East Pacific and June 1 in the Central Pacific. The season ends on November 30 in both basins. These dates conventionally delimit the period during each year when most tropical cyclones form.

<span class="mw-page-title-main">2008 Pacific hurricane season</span> Hurricane season in the Pacific Ocean

The 2008 Pacific hurricane season was a near-average Pacific hurricane season which featured seventeen named storms, though most were rather weak and short-lived. Only seven storms became hurricanes, of which two intensified into major hurricanes. This season was also the first since 1996 to have no cyclones cross into the central Pacific. The season officially began on May 15 in the eastern Pacific and on June 1 in the central Pacific. It ended in both regions on November 30. These dates, adopted by convention, historically describe the period in each year when most tropical cyclone formation occurs in these regions of the Pacific. This season, the first system, Tropical Storm Alma, formed on May 29, and the last, Tropical Storm Polo, dissipated on November 5.

<span class="mw-page-title-main">2012 Pacific hurricane season</span> Hurricane season in the Pacific Ocean

The 2012 Pacific hurricane season was a moderately active Pacific hurricane season that saw an unusually high number of tropical cyclones pass west of the Baja California Peninsula. The season officially began on May 15 in the eastern Pacific Ocean, and on June 1 in the central Pacific (from 140°W to the International Date Line, north of the equator; they both ended on November 30. These dates conventionally delimit the period of each year when most tropical cyclones form in these regions of the Pacific Ocean. However, the formation of tropical cyclones is possible at any time of the year. This season's first system, Tropical Storm Aletta, formed on May 14, and the last, Tropical Storm Rosa, dissipated on November 3.

<span class="mw-page-title-main">Timeline of the 2001 Atlantic hurricane season</span>

The 2001 Atlantic hurricane season was an above-average Atlantic hurricane season in which fifteen named storms formed. The season officially began on June 1 and ended on November 30, dates that conventionally delimit the period of each year when most tropical cyclones form in the Atlantic basin. The season's first tropical cyclone, Tropical Storm Allison, formed on June 5 while the season's final system, Hurricane Olga, dissipated on December 6.

<span class="mw-page-title-main">2010 Atlantic hurricane season</span> Hurricane season in the Atlantic Ocean

The 2010 Atlantic hurricane season was the first of three consecutive very active Atlantic hurricane seasons, each with 19 named storms. This above average activity included 12 hurricanes, equaling the number that formed in 1969. Only the 2020 and 2005 seasons have had more, at 14 and 15 hurricanes respectively. Despite the high number of hurricanes, not one hurricane hit the United States making the season the only season with 10 or more hurricanes without a United States landfall. The overall tropical cyclone count in the Atlantic exceeded that in the West Pacific for only the second time on record. The season officially began on June 1 and ended on November 30, dates that conventionally delimit the period during each year when tropical cyclone formation is most likely. The first cyclone, Alex intensified into the first June hurricane since Allison in 1995. The month of September featured eight named storms. October featured five hurricanes, including Tomas, which became the latest on record in a calendar year to move through the Windward Islands. Activity was represented with an accumulated cyclone energy (ACE) value of 165 units, which was the eleventh highest value on record at the time. The activity in 2010 was heightened due to a very strong La Niña, which also led to an inactive Pacific hurricane season.

<span class="mw-page-title-main">2013 Pacific hurricane season</span> Hurricane season in the Pacific Ocean

The 2013 Pacific hurricane season was the first to see twenty named storms since 2009 but also had the ninth fewest ACE units on record, as many of the storms were weak and short-lived. The season officially began on May 15 in the Eastern Pacific and started on June 1 in the Central Pacific; both ended on November 30. These dates conventionally delimit the period of each year when most tropical cyclones form east of the International Dateline in the North Pacific basin. The first cyclone, Tropical Storm Alvin, formed on May 15, and the last, Tropical Storm Sonia, dissipated on November 4.

<span class="mw-page-title-main">2014 Pacific hurricane season</span> Hurricane season in the Pacific Ocean

The 2014 Pacific hurricane season was the fifth-busiest season since reliable records began in 1949, alongside the 2016 season. The season officially started on May 15 in the East Pacific Ocean, and on June 1 in the Central Pacific; they both ended on November 30. These dates conventionally delimit the period of each year when most tropical cyclones form in the Pacific basin.

<span class="mw-page-title-main">2015 Pacific hurricane season</span> Hurricane season in the Pacific Ocean

The 2015 Pacific hurricane season is the second-most active Pacific hurricane season on record, with 26 named storms, only behind the 1992 season. A record-tying 16 of those storms became hurricanes, and a record 11 storms further intensified into major hurricanes throughout the season. The Central Pacific, the portion of the Northeast Pacific Ocean between the International Date Line and the 140th meridian west, had its most active year on record, with 16 tropical cyclones forming in or entering the basin. Moreover, the season was the third-most active season in terms of accumulated cyclone energy, amassing a total of 290 units. The season officially started on May 15 in the Eastern Pacific and on June 1 in the Central Pacific; they both ended on November 30. These dates conventionally delimit the period of each year when most tropical cyclones form in the Northeast Pacific basin. However, the formation of tropical cyclones is possible at any time of the year. This was shown when a tropical depression formed on December 31. The above-average activity during the season was attributed in part to the very strong 2014–16 El Niño event.

<span class="mw-page-title-main">2016 Pacific hurricane season</span> Hurricane season in the Pacific Ocean

The 2016 Pacific hurricane season was tied as the fifth-most active Pacific hurricane season on record, alongside the 2014 season. Throughout the course of the year, a total of 22 named storms, 13 hurricanes and six major hurricanes were observed within the basin. Although the season was very active, it was considerably less active than the previous season, with large gaps of inactivity at the beginning and towards the end of the season. It officially started on May 15 in the Eastern Pacific, and on June 1 in the Central Pacific ; they both ended on November 30. These dates conventionally delimit the period of each year when most tropical cyclones form in these regions of the Pacific Ocean. However, tropical development is possible at any time of the year, as demonstrated by the formation of Hurricane Pali on January 7, the earliest Central Pacific tropical cyclone on record. After Pali, however, no tropical cyclones developed in either region until a short-lived depression on June 6. Also, there were no additional named storms until July 2, when Tropical Storm Agatha formed, becoming the latest first-named Eastern Pacific tropical storm since Tropical Storm Ava in 1969.

<span class="mw-page-title-main">2017 Pacific hurricane season</span> Hurricane season in the Pacific Ocean

The 2017 Pacific hurricane season was an above average Pacific hurricane season in terms of named storms, though less active than the previous three, featuring eighteen named storms, nine hurricanes, and four major hurricanes. Despite the considerable amount of activity, most of the storms were weak and short-lived. The season officially started on May 15 in the eastern Pacific Ocean, and on June 1 in the central Pacific; they both ended on November 30. These dates conventionally delimit the period of each year when most tropical cyclones form in the respective regions. However, the formation of tropical cyclones is possible at any time of the year, as illustrated in 2017 by the formation of the season's first named storm, Tropical Storm Adrian, on May 9. At the time, this was the earliest formation of a tropical storm on record in the eastern Pacific basin proper. The season saw near-average activity in terms of accumulated cyclone energy (ACE), in stark contrast to the extremely active seasons in 2014, 2015, and 2016; and for the first time since 2012, no tropical cyclones formed in the Central Pacific basin. However, for the third year in a row, the season featured above-average activity in July, with the ACE value being the fifth highest for the month. Damage across the basin reached $375.28 million (2017 USD), while 45 people were killed by the various storms.

<span class="mw-page-title-main">Timeline of the 2010 Pacific hurricane season</span>

The 2010 Pacific hurricane season was one of the least active seasons on record, featuring the fewest named storms since 1977. The season officially started on May 15 in the eastern Pacific—east of 140°W—and on June 1 in the central Pacific—between the International Date Line and 140°W—and lasted until November 30. These dates typically cover the period of each year when most tropical cyclones form in the eastern Pacific basin. The season's first storm, Tropical Storm Agatha, developed on May 29; the season's final storm, Tropical Storm Omeka, degenerated on December 21.

<span class="mw-page-title-main">Timeline of the 2010 Atlantic hurricane season</span>

The 2010 Atlantic hurricane season was an event in the annual tropical cyclone season in the north Atlantic Ocean. It was one of the most active Atlantic hurricane seasons since record keeping began in 1851 as 19 named storms formed. The season officially began on June 1, 2010, and ended on November 30, 2010, dates that conventionally delimit the period of each year when most tropical cyclones develop in the Atlantic basin. The first storm to form was Hurricane Alex, on June 25; and the last to dissipate was Hurricane Tomas, on November 7.

<span class="mw-page-title-main">2020 Atlantic hurricane season</span> Hurricane season in the Atlantic Ocean

The 2020 Atlantic hurricane season was the most active Atlantic hurricane season on record, in terms of number of systems. It featured a total of 31 tropical or subtropical cyclones, with all but one cyclone becoming a named storm. Of the 30 named storms, 14 developed into hurricanes, and a record-tying seven further intensified into major hurricanes. It was the second and final season to use the Greek letter storm naming system, the first being 2005, the previous record. Of the 30 named storms, 11 of them made landfall in the contiguous United States, breaking the record of nine set in 1916. During the season, 27 tropical storms established a new record for earliest formation date by storm number. This season also featured a record ten tropical cyclones that underwent rapid intensification, tying it with 1995, as well as tying the record for most Category 4 hurricanes in a singular season in the Atlantic Basin. This unprecedented activity was fueled by a La Niña that developed in the summer months of 2020, continuing a stretch of above-average seasonal activity that began in 2016. Despite the record-high activity, this was the first season since 2015 in which no Category 5 hurricanes formed.

<span class="mw-page-title-main">Timeline of the 2013 Pacific hurricane season</span>

The 2013 Pacific hurricane season was an above-average year in which twenty named storms developed. The hurricane season officially began on May 15 in the East Pacific, coinciding with the formation of Tropical Storm Alvin, and on June 1 in the Central Pacific; it ended on November 30 in both basins. These dates conventionally delimit the period during each year when most tropical cyclones form. The final system of the year, Tropical Storm Sonia, dissipated on November 4.

<span class="mw-page-title-main">Timeline of the 2013 Atlantic hurricane season</span>

The 2013 Atlantic hurricane season was an event in the annual hurricane season in the north Atlantic Ocean. It featured below-average tropical cyclone activity, with the fewest hurricanes since the 1982 season. The season officially began on June 1, 2013 and ended on November 30, 2013. These dates, adopted by convention, historically delimit the period in each year when most tropical systems form. The season's first storm, Tropical Storm Andrea formed on June 5, and its final storm, an unnamed subtropical storm, dissipated on December 7. Altogether, there were 13 named tropical storms during the season. Two of which attained hurricane strength, but neither intensified into a major hurricane, the first such occurrence since the 1994 season.

<span class="mw-page-title-main">Timeline of the 2015 Atlantic hurricane season</span>

The 2015 Atlantic hurricane season was an event in the annual hurricane season in the north Atlantic Ocean. It was the third consecutive year to feature below-average tropical cyclone activity, with eleven named storms. The season officially began on June 1, 2015 and ended on November 30, 2015. These dates, adopted by convention, historically describe the period in each year when most tropical systems form. However, systems can and do form outside these dates, as did the season's first storm, Tropical Storm Ana, which developed on May 8; the season's final storm, Hurricane Kate, lost its tropical characteristics on November 11.

<span class="mw-page-title-main">2019 Pacific hurricane season</span> Hurricane season in the Pacific Ocean

The 2019 Pacific hurricane season was an above average season which produced nineteen named storms, most of which were rather weak and short-lived. Only seven hurricanes formed, the fewest since 2010. The season officially began on May 15 in the East Pacific Ocean, and on June 1 in the Central Pacific; they both ended on November 30. These dates conventionally delimit the period of each year when most tropical cyclones form in the Pacific basin. This season was one of the latest-starting Pacific hurricane seasons on record, with the first tropical cyclone, Hurricane Alvin, forming on June 25. The final system, Tropical Depression Twenty-One-E, dissipated on November 18.

<span class="mw-page-title-main">2020 Pacific hurricane season</span> Hurricane season in the Pacific Ocean

The 2020 Pacific hurricane season was a near average Pacific hurricane season in terms of named storms, featuring 17, but well below average season for hurricanes and major hurricanes, with only 4 hurricanes and 3 major hurricanes forming. Additionally, no tropical cyclones formed in the Central Pacific basin for the first time since 2017. The season officially began on May 15 in the East Pacific Ocean, and on June 1 in the Central Pacific (from 140°W to the International Date Line, north of the equator; they both ended on November 30. These dates conventionally delimit the period of each year when most tropical cyclones form in the respective regions. However, the formation of tropical cyclones is possible at any time of the year, as illustrated in 2020 by the formation of the season's first system, Tropical Depression One-E, on April 25. This was the earliest formation of a tropical cyclone on record in the eastern Pacific basin proper. The final system of the season was Tropical Storm Polo, which dissipated on November 19.

<span class="mw-page-title-main">2021 Pacific hurricane season</span> Hurricane season in the Pacific Ocean

The 2021 Pacific hurricane season was a moderately active Pacific hurricane season, with above-average activity in terms of number of named storms, but below-average activity in terms of major hurricanes, as 19 named storms, 8 hurricanes, and 2 major hurricanes formed in all. It also had a near-normal accumulated cyclone energy (ACE). The season officially began on May 15, 2021 in the Eastern Pacific Ocean, and on June 1, 2021, in the Central Pacific in the Northern Hemisphere. The season ended in both regions on November 30, 2021. These dates historically describe the period each year when most tropical cyclogenesis occurs in these regions of the Pacific 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 was the earliest forming tropical storm on record in the Eastern Pacific. Conversely, 2021 was the second consecutive season in which no tropical cyclones formed in the Central Pacific.

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