List of storms in the 2006 Pacific hurricane season

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Template:Infobox hurricane season active The 2006 Pacific hurricane season is an ongoing event in the annual cycle of tropical cyclone formation. It officially began May 15, 2006 in the eastern Pacific, designated as the area east of 140°W, and began on June 1 2006 in the central Pacific, which is between the International Date Line and 140°W. The season will officially last until November 30, 2006.

Seasonal forecasts

Predictions of tropical activity in the 2006 season
Source Date Named
storms 		Hurricanes Major
hurricanes
NOAA Average[1] 15.3 8.8 4.2
NOAA 22 May 2006 12–16 6–8 1–3

On May 22, 2006, NOAA released their forecasts for the 2006 Atlantic, East Pacific, and Central Pacific hurricane seasons. They predict a below-normal level of activity in the Eastern Pacific, with 12 to 16 named storms, of which 6 to 8 are expected to become hurricanes, and 1 to 3 expected to become major hurricanes. [2] The Central Pacific basin is also expected to be below average, with only two to three tropical cyclones expected to form or cross into the area. [3] They expect that neither El Niño or La Niña will affect conditions significantly. [2]

Storms

Tropical Storm Aletta

 
DurationUnknown – Unknown
Peak intensityWinds not specified;

An area of disturbed weather located south-southwest of the Mexican port of Acapulco, Guerrero, was first detected on May 23, just eight days into the season. It gradually gained organized convection and was classified as a tropical depression early on May 27. It became a tropical storm later that morning, the first of 2006 in the Western Hemisphere. While named tropical cyclones in May are infrequent events, Aletta marked the seventh consecutive year to have a named cyclone form in May. [4] It strengthened to a tropical storm with 45 mph (70 km/h) winds while moving towards the Guerrero coast in southwestern Mexico, but it later turned to the west and weakened on May 29. Aletta continued to weaken until it dissipated on May 30.

Aletta produced moderate rainfall across Mexico, including 3.6 inches in southern Oaxaca. There were, however, no reports of damage, flooding, or casualties.[4][5]

Tropical Depression Two-E

 
DurationUnknown – Unknown
Peak intensityWinds not specified;

On June 1, an area of disturbed weather developed near the same area in which Aletta formed. High shear slowed the development of the system. However, it gained enough convection and organization to be classified as a tropical depression on June 3. The depression strengthened to near tropical storm status as it approached the coast of southwestern Mexico; however, shear persisted over the system and it weakened before dissipating on June 4.

Despite never becoming a named storm, heavy rain occurred, with Acapulco receiving between 10-12 inches (250-300 mm) of rain as a result of the depression.[6]

Hurricane Bud

 
DurationUnknown – Unknown
Peak intensityWinds not specified;

After over a month of inactivity, a disturbance in the Eastern Pacific off the Peninsula of Baja California began to intensify, and it was designated as Tropical Depression Three-E on July 10 local time (July 11 UTC), while about 750 miles (1200 km) south of the tip of Baja California. On July 11, just six hours after the first advisory, it strengthened into Tropical Storm Bud. After that, Bud rapidly intensified over favorable conditions. It developed an eye on the afternoon of July 11 and was designated a hurricane in a special advisory in the late afternoon. It continued to intensify and eventually became a major hurricane late on July 12. On July 13, Bud reached a peak of maximum sustained winds of 125 mph (200 km/h) and a minimum pressure of 953 mbar as a strong Category 3 hurricane. It then weakened rapidly as it moved over much colder waters, losing almost all its convection and weakening to a tropical storm on July 14 and later weakening to tropical depression status on July 15. The depression continued losing convection and degenerated into a remnant low later that day.

Hurricane Carlotta

 
DurationUnknown – Unknown
Peak intensityWinds not specified;

Late on July 11, a new tropical depression formed about 250 miles (400 km) southwest of the Mexican state of Guerrero. The depression intensified quickly, and six hours later it was upgraded to tropical storm status, receiving the name Carlotta.[7] The storm continued to strengthen, and became a hurricane 24 hours later.[8] However, the system encountered unfavorable conditions and cooler waters and weakened into a tropical storm during the afternoon of July 14.[9] However, Carlotta managed to regain some convection and restrengthened into a hurricane late that evening, only to weaken back into a tropical storm again the following morning. The system continued to weaken and was downgraded to tropical depression status on the morning of July 16. Carlotta degenerated into a non-convective remnant low later that night.

Hurricane Daniel

 
DurationUnknown – Unknown
Peak intensityWinds not specified;

On July 16, a tropical disturbance formed far to the south of the Baja California Peninsula and quickly increased in convective activity and organization. The NHC designated it as a tropical depression that night (July 17 UTC). The depression continued to organize and was designated as a tropical storm the next day. The storm continued to intensify and was declared a hurricane on July 18. Early on July 20, Hurricane Daniel underwent rapid intensification and reached major hurricane status (Category 3) and was later upgraded further to Category 4 status. After several repeated eyewall replacement cycles, Daniel later became an annular hurricane, allowing it to maintain category 4 status for longer than it otherwise would have.

It crossed over into the Central North Pacific basin early on July 24 and was predicted to affect Hawaii as a tropical storm. However, Daniel encountered weak steering currents in the open ocean, causing it to slow down considerably. It rapidly degenerated to a tropical depression on July 25 and the CPHC issued its last advisory on July 26 while the storm was still well to the east of Hawaii.

Tropical Storm Emilia

 
DurationUnknown – Unknown
Peak intensityWinds not specified;

A tropical depression formed on July 21 from an area of disturbed weather 380 miles (610 km) south-southwest of Acapulco, and became Tropical Storm Emilia on July 22. Tropical storm watches were issued on the Mexican coast soon afterwards due to uncertainties in its track, but were discontinued after the storm turned northwestwards away from the coast. It later approached the Baja California Peninsula and brought tropical storm-force winds to the southern tip and western coast of the peninsula before it turned northwestwards and rapidly weakened.

Emilia was expected to peak as a Category 1 or 2 hurricane on July 24 or July 25, but due to hostile conditions it did not gain hurricane strength. However, it did reach a peak of 70 mph (110 km/h) and was beginning to form an eyewall when it peaked in intensity.

Tropical Storm Fabio

 
DurationUnknown – Unknown
Peak intensityWinds not specified;

An area of low pressure tracked westward over the open Pacific in the last week of July. It gradually developed better organization and became a tropical depression on the afternoon of July 31. It continued to organize and was designated Tropical Storm Fabio six hours later. The storm moved westward over open waters and did not strengthen significantly due to strong wind shear. Fabio weakened into a tropical depression on August 2 and degenerated into a remnant low on August 3.

Tropical Storm Gilma

 
DurationUnknown – Unknown
Peak intensityWinds not specified;

Tropical Depression Eight-E formed off the coast of Central America late on July 31, and slowly strengthened into a tropical storm by August 1. It encountered shearing winds and dry air, weakened to a depression the next day, and dissipated on August 3.

Hurricane Hector

 
DurationUnknown – Unknown
Peak intensityWinds not specified;

An area of low pressure tracked across the eastern Pacific in the second week of August. It gradually became better organized and became a tropical depression on the afternoon of August 15. It strengthened steadily and was designated a tropical storm early on August 16, reaching hurricane strength on August 17. Reaching cooler waters and higher wind shear, Hector weakened into a tropical storm on August 20, and finally dissipated two days later.

Hurricane Ioke

 
DurationUnknown – Unknown
Peak intensityWinds not specified;
Ioke in the Pacific Ocean

A persistent tropical disturbance embedded in a trough gained convection and developed into a tropical depression about 775 miles south of Honolulu on August 19. It continued to strengthen, and the Central Pacific Hurricane Center designated the system with the name Ioke (IPA /iːˈəʊ.keɪ/), which is Hawaiian for the name Joyce,[10] becoming the first tropical storm to form in the Central Pacific since 2002. After undergoing rapid development, Ioke strengthened into a hurricane just 24 hours after it had formed; it continued to rapidly intensify and became a major hurricane (Category 3 or greater) on the morning of August 21. Later that day, Ioke intensified even further into a Category 4 hurricane. On August 22, it began to weaken, and was downgraded back to a Category 2. The National Weather Service reported that the eastern eyewall of Ioke passed over the uninhabited Johnston Atoll [11], buffeting it with hurricane-force winds. The storm began to deepen again late on August 23 as it moved over increasingly warm water, reaching major hurricane status for the second time while moving to the west-northwest.

Storm path of Ioke as of 5 p.m. HST August 26.

Twelve people on a United States Air Force vessel in the Pacific were forced to abandon ship and take shelter in a hurricane-proof bunker on the island.[12] They were reported safe the next day, and a reconnaissance flight reported little damage on the island.[13]

Overnight between August 24 and August 25, Ioke strengthened into a Category 5 hurricane, the first system originating from the Central Pacific to reach that intensity while still in the Western hemisphere. Ioke then weakened back to a Category 4 while undergoing an eyewall replacement cycle, regaining Category 5 strength on August 26. It is the most intense hurricane ever to develop in the Central Pacific, with a central pressure of 920 mbar (27.17 inHg). Ioke is only the fifth Category 5 hurricane on record in the Central Pacific, and the first one since Hurricane John in 1994.[14]

Current storm information

Hurricane Ioke is now within the Area of Responsibility of RSMC Tokyo-Typhoon Center. Please see 2006 Pacific typhoon season.

Hurricane Ileana

Hurricane Ileana
Current storm status
Tropical storm (1-min mean)
Satellite image
Forecast map
As of:8 p.m. PDT August 26 (0300 UTC August 27)
Location:23.2°N 119.8°W
Sustained winds:45 mph (75 km/h) (1-min mean)
gusting to 60 mph (95 km/h)
Pressure:1000 mbar (29.53 inHg)
Movement:WNW at 6 mph (9 km/h)
See more detailed information.

Tropical Depression Ten-E formed 325 miles (520 km) south-southwest of Acapulco on August 21. 3 hours later it had strengthened sufficiently to be designated Tropical Storm Ileana. The storm was upgraded to hurricane intensity during the afternoon of August 22. It intensified rapidly, obtaining major hurricane status early on August 23. Ileana then underwent an eyewall replacement cycle, thus weakening.[15] Normally, after an eyewall replacement cycle, the cyclone would restrengthen, but due to the storm's movement over increasingly cooler water, it continued to weaken. The storm is expected to be a remnant low within 48 hours.

Hurricane Ileana track as of 8 p.m. PDT August 26.

Current storm information

As of 8 p.m. PDT August 26 (0300 UTC August 27), Tropical Storm Ileana is located near 23.2°N 119.8°W. It has maximum sustained winds of 45 mph (75 km/h), with higher gusts. The storm is moving toward the west-northwest at 6 mph (9 km/h). The minimum central pressure is 1000 mbar (29.53 inHg).

Recent timeline of events

Main article: Timeline of the 2006 Pacific hurricane season

August

August 15
  • 2 p.m. PDT (2100 UTC) - Tropical Depression Nine-E forms 735 miles (1185 km) south-southwest of Cabo San Lucas.
August 16
  • 2 a.m. PDT (0900 UTC) - Tropical Depression Nine-E strengthens into Tropical Storm Hector.
August 17
  • 8 a.m. PDT (1500 UTC) - Tropical Storm Hector strengthens into Hurricane Hector.
August 18
  • 2 a.m. PDT (0900 UTC) - Hurricane Hector is upgraded to a Category 2 hurricane.
August 19
  • 5 p.m. HST (0300 UTC August 20) - Tropical Depression One-C forms 775 miles south of Honolulu.
  • 11 p.m. HST (0900 UTC August 20) - Tropical Depression One-C strengthens into Tropical Storm Ioke.
August 20
  • 8 a.m. PDT (1500 UTC) - Hurricane Hector is downgraded to a tropical storm.
  • 5 p.m. HST (0300 UTC August 21) - Tropical Storm Ioke strengthens into Hurricane Ioke.
August 21
  • 11 a.m. PDT (1800 UTC) - Tropical Depression Ten-E forms 325 miles (520 km) south-southwest of Acapulco.
  • 2 p.m. PDT (2100 UTC) - Tropical Depression Ten-E strengthens into Tropical Storm Ileana.
  • 11 a.m. HST (2100 UTC) - Hurricane Ioke is upgraded to a Category 3 hurricane, without ever being upgraded to Category 2 operationally.
  • 5 p.m. HST (0300 UTC August 22) - Hurricane Ioke is upgraded to Category 4 intensity.
August 22
  • 2 p.m. PDT (2100 UTC) - Tropical Storm Ileana strengthens into Hurricane Ileana.
  • 8 p.m. PDT (0300 UTC August 23) - The NHC releases its final advisory on dissipating Tropical Depression Hector.
August 23
  • 2 a.m. PDT (0900 UTC) - Hurricane Ileana is upgraded to a Category 3 hurricane, without ever being upgraded to a Category 2 operationally.
August 24
  • 11 p.m. HST (0900 UTC August 25) - Hurricane Ioke is upgraded to Category 5 intensity.
August 26
  • 2 a.m. PDT (0900 UTC) - Hurricane Ileana is downgraded to a tropical storm.
  • 5 p.m. HST (0300 UTC August 27) - The final CPHC advisory on Hurricane Ioke is released as the storm begins to cross the date line.

Accumulated Cyclone Energy (ACE) Rating

ACE (104kt2) (Source) — Storm:
1 (32.3) Ioke
2 27.8
(2.33)		 Daniel
3 12.0 Ileana (active)
4 11.1 Hector
5   9.30 Bud
6   6.48 Carlotta
7   5.30 Emilia
8   1.34 Fabio
9   1.13 Aletta
10   0.368 Gilma
Total: 74.8 (34.6)

The table on the right shows the ACE for each storm in the season. ACE is, broadly speaking, a measure of the power of the hurricane multiplied by the length of time it existed, so storms that last a long time, as well as particularly strong hurricanes, have high ACEs. ACE is only calculated for full advisories on tropical systems at or exceeding 35 knots (39 mph/63 km/h) or tropical storm strength.

The figures in parenthesis are for storms in the Central Pacific basin west of 140°W; those not in parenthesis are for the Eastern Pacific basin.

Storm names

The following names will be used for named storms that form in the northeast Pacific in 2006. This is the same list that was used in the 2000 season. Storms that form in the central Pacific are given names from a sequential list. So far this season, Ioke has been the only name used from this list, the first time a name from the Central Pacific list has been used since the 2002 season.

Eastern Pacific

  • Aletta
  • Bud
  • Carlotta
  • Daniel
  • Emilia
  • Fabio
  • Gilma
  • Hector
  • Ileana (active)
  • John (unused)
  • Kristy (unused)
  • Lane (unused)
  • Miriam (unused)
  • Norman (unused)
  • Olivia (unused)
  • Paul (unused)
  • Rosa (unused)
  • Sergio (unused)
  • Tara (unused)
  • Vicente (unused)
  • Willa (unused)
  • Xavier (unused)
  • Yolanda (unused)
  • Zeke (unused)

Central Pacific

For the central Pacific Ocean, four consecutive lists are used, with the names used sequentially until exhausted, rather than until the end of the year, due to the low number of storms each year. The current list is displayed here.

  • Alika (2002)
  • Ele (2002)
  • Huko (2002)
  • Ioke (in WPac)
  • Kika (unused)
  • Lana (unused)
  • Maka (unused)
  • Neki (unused)
  • Oleka (unused)
  • Peni (unused)
  • Ulia (unused)
  • Wali (unused)

Retired names, if any, will be announced by the World Meteorological Organization in the spring of 2007.

See also

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References

  1. ^ Climate Prediction Center, NOAA (2006-05-22). "Background Information: East Pacific Hurricane Season". National Oceanic and Atmospheric Administration. Retrieved 2006-05-24. {{cite web}}: Check date values in: |year= (help)CS1 maint: year (link)
  2. ^ a b Climate Prediction Center, NOAA (2006-05-22). "NOAA Expects Below Average 2006 East Pacific Hurricane Season". National Oceanic and Atmospheric Administration. Retrieved 2006-05-22. {{cite web}}: Check date values in: |year= (help)CS1 maint: year (link)
  3. ^ Central Pacific Hurricane Center, NOAA (2006-05-22). "NOAA Announces Central Pacific Hurricane Season Outlook". National Oceanic and Atmospheric Administration. Retrieved 2006-06-10. {{cite web}}: Check date values in: |year= (help)CS1 maint: year (link)
  4. ^ a b National Hurricane Center, NOAA (2006-06-01). "May Tropical Weather Summary". National Oceanic and Atmospheric Administration. Retrieved 2006-06-01. {{cite web}}: Check date values in: |year= (help)CS1 maint: year (link)
  5. ^ National Hurricane Center (2006). "Tropical Cyclone Report: Tropical Storm Aletta" (PDF). NOAA. Retrieved 2006-07-18.
  6. ^ Comisión Federal de Electricidad (June 4, 2006). "Aviso 12 de la Depresión Tropical 2-E" (in Template:Es icon). CFE. Retrieved 2006-06-07. {{cite web}}: Check date values in: |date= (help)CS1 maint: unrecognized language (link)
  7. ^ National Hurricane Center. "Tropical Storm Carlotta Discussion Number 2, 2 a.m. PDT, July 12, 2006". National Oceanic and Atmospheric Administration. Retrieved 2006-07-12.
  8. ^ National Hurricane Center. "Tropical Storm Carlotta Discussion Number 6, 2 a.m. PDT, July 13, 2006". National Oceanic and Atmospheric Administration. Retrieved 2006-07-13.
  9. ^ National Hurricane Center. "Tropical Storm Carlotta Discussion Number 12, 2 p.m. PDT, July 14, 2006". National Oceanic and Atmospheric Administration. Retrieved 2006-07-14.
  10. ^ Central Pacific Hurricane Center (August 3, 2005). "Tropical Storm Ioke Discussion Number 2". National Oceanic and Atmospheric Administration. Retrieved 2006-08-20. {{cite web}}: Check date values in: |date= (help)
  11. ^ Central Pacific Hurricane Center (2006-08-22). "Hurricane Ioke Discussion Number 14...Corrected". National Oceanic and Atmospheric Administration. Retrieved 2006-08-24. {{cite web}}: Check date values in: |date= (help)
  12. ^ Leone, Diana (2006-08-23). "Hawaiian-named storm hits Johnston Isle". Star Bulletin. Retrieved 2006-08-25. {{cite news}}: Check date values in: |date= (help)
  13. ^ Gima, Craig (2006-08-24). "12 survive hurricane at Johnston Atoll". Star Bulletin. Retrieved 2006-08-25. {{cite news}}: Check date values in: |date= (help)
  14. ^ Central Pacific Hurricane Center (2006-08-25). "Public Information Statement". National Oceanic and Atmospheric Administration. Retrieved 2006-08-25. {{cite web}}: Check date values in: |date= (help)
  15. ^ National Hurricane Center. "Hurricane Ileana Discussion Number 12". National Oceanic and Atmospheric Administration. Retrieved 2006-08-25.
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