Timeline of the 2015 Pacific hurricane season

The 2015 Pacific hurricane season was the second-most active Pacific hurricane season on record,[1] and featured the strongest tropical cyclone ever observed in the Western Hemisphere: Hurricane Patricia. 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 ended on November 30. These dates typically cover the period of each year when most tropical cyclones form in the Northeastern Pacific tropical cyclone basin.[2] The season's first storm, Hurricane Andres, developed on May 28; the season's final storm, Tropical Depression Nine-C, dissipated on December 31, well after the official end of the season.

Timeline of the
2015 Pacific hurricane season
Season summary map
Season boundaries
First system formedMay 28, 2015
Last system dissipatedDecember 31, 2015
(record latest)
Strongest system
NamePatricia
(Most intense hurricane in the Western Hemisphere)
Maximum winds215 mph (345 km/h)
(1-minute sustained)
Lowest pressure872 mbar (hPa; 25.75 inHg)
Longest lasting system
NameJimena
Duration14.75 days
Storm articles

Throughout the season, 31 tropical depressions developed, 26 of which became tropical storms, a record-tying 16 of them reached hurricane strength, and a record-breaking 11 achieved major hurricane intensity.[nb 1] Activity in the Central Pacific shattered records, with 16 tropical cyclones forming in or entering the basin; the previous highest was 11 during the 1992 and 1994 seasons.[4] On August 30, three hurricanes at Category 4 strength—Ignacio, Jimena, and Kilo—existed simultaneously in the Northeastern Pacific, which was a first for the basin.[5] On October 23, Hurricane Patricia became the strongest hurricane ever recorded in the Western Hemisphere, with a minimum atmospheric pressure of 872 mbar (hPa; 25.75 inHg) and maximum sustained winds of 215 mph (345 km/h). Activity in the basin was boosted by the strong 2014–16 El Niño event, which brought anomalously high sea surface temperatures and low vertical wind shear that helped the numerous systems form and intensify.[6][7]

Four time zones are utilized in the basin: Central for storms east of 106.0°W, Mountain from 106.0°W to 114.9°W, Pacific from 115.0°W to 140.0°W,[8] and Hawaii–Aleutian for storms between the International Date Line and 140°W.[9] However, for convenience, all information is listed by Coordinated Universal Time (UTC) first with the respective local time included in parentheses. This timeline includes information that was not operationally released, meaning that data from post-storm reviews by the National Hurricane Center and Central Pacific Hurricane Center are included. This timeline documents tropical cyclone formations, strengthening, weakening, landfalls, extratropical transitions, and dissipations during the season.

Timeline of events

Hurricane Sandra (2015)Hurricane PatriciaHurricane Marty (2015)Hurricane Linda (2015)Typhoon HalolaHurricane Carlos (2015)Hurricane Blanca (2015)Saffir–Simpson hurricane wind scale

May

May 15
  • The 2015 Pacific hurricane season officially begins.[2]
May 28
May 29
May 30
May 31

June

June 1
Hurricane Andres shortly after peak intensity on June 1
June 2
June 3
Hurricane Blanca near peak intensity on June 3
June 4
June 5
June 6
June 7
June 8
Tropical Depression Blanca weakening over the Baja California Peninsula on June 8
June 9
June 10
June 11
June 13
Hurricane Carlos at peak intensity on June 13
June 15
June 16
June 17

July

July 8
Tracks of Tropical Storms Halola (left), Iune (center), and Ela (right) across the Central Pacific basin during July; the Hawaiian islands are shown in the middle of the map.
July 10
July 11
July 12
Path of Tropical Storm Enrique in the open Pacific Ocean
July 13
July 14
July 15
July 16
A weakening Hurricane Dolores southwest of the Baja California Peninsula on July 16
July 17
July 18
July 23
July 24
July 27
July 29
July 30
July 31
Hurricane Guillermo at peak strength on July 31

August

August 2
August 3
August 6
August 7
August 8
Path of Hurricane Hilda across the Central Pacific. Briefly threatening the Hawaiian Islands, Hilda eventually weakened and turned away on August 12.
August 9
August 10
August 12
August 13
August 14
August 16
Path of Tropical Depression Eleven-E paralleling the west coast of Mexico
August 18
August 21
August 22
August 23
August 24
August 25
Hurricane Loke (top) and Tropical Depression Kilo (bottom) on August 25
August 26
August 27
August 28
August 29
August 30
Hurricanes Kilo (left), Ignacio (center), and Jimena (right) at major hurricane strength on August 30. This was the first time that three such systems existed simultaneously over the Pacific Ocean east of the International Date Line since reliable records began.[5]
August 31

September

September 1
September 2
September 3
Tropical Storm Kevin holding its intensity on September 4
September 4
September 5
September 6
September 7
September 8
Hurricane Linda at Category 3 strength on September 8
September 9
September 10
September 18
September 20
The nascent Tropical Depression Sixteen-E on September 20. The system's rainbands already cover Baja California Sur and extend into the Gulf of California.
September 21
September 22
September 25
Tropical Storm Niala shortly after being named on September 25
September 26
September 27
September 28
September 29
September 30

October

October 3
October 4
October 6
Hurricane Oho intensifying on October 6. The trough that steered the system northeast can be seen north of the hurricane.
October 7
October 8
October 9
October 10
October 11
  • 06:00 UTC (8:00 p.m. HST, October 10) Tropical Storm Nora crosses west of 140°W and enters the Central Pacific basin.[36]
October 12
October 14
October 15
Storm path of Hurricane Olaf, which traversed the Eastern and Central Pacific basins from October 15–27.
October 17
October 18
October 19
October 20
October 21
October 22
October 23
Hurricane Patricia approaching Western Mexico at Category 5 strength on October 23. Just minutes after this picture was taken, Hurricane Hunters observed the Western Hemisphere then-record-low pressure of 879 mbar (hPa; 25.96 inHg), but post-storm analysis concluded that the peak intensity had occurred several hours earlier.
October 24
October 25
October 26
October 27

November

November 18
November 19
November 22
November 23
Path of Hurricane Sandra in late November
November 24
November 25
November 26
November 27
November 28
November 30
  • The 2015 Pacific hurricane season officially ends.[2]

December

December 31

January 2016

January 1


See also

Notes

  1. A major hurricane is a storm that ranks as Category 3 or higher on the Saffir–Simpson hurricane wind scale.[3]
  2. The figures for maximum sustained winds and position estimates are rounded to the nearest five units (knots, miles, or kilometers), following the convention used in the National Hurricane Center's operational products for each storm. All other units are rounded to the nearest digit.

References

  1. Kieran Hickey (August 2016). "A review of the 2015 hurricane, tropical cyclone and typhoon season". International Journal of Meteorology. 41 (398): 162–167. Retrieved March 3, 2019.
  2. Neal Dorst (June 2, 2016). "TCFAQ G1) When is hurricane season?". Atlantic Oceanographic and Meteorological Laboratory. Archived from the original on May 5, 2009. Retrieved July 24, 2018.
  3. Stan Goldenberg (June 1, 2017). "TCFAQ A3) What is a super-typhoon? What is a major hurricane? What is an intense hurricane?". Atlantic Oceanographic and Meteorological Laboratory. Archived from the original on April 26, 2014. Retrieved May 24, 2018.
  4. Tropical Weather Summary for the Central North Pacific (Report). Honolulu, Hawaii: Central Pacific Hurricane Center. January 1, 2016. Archived from the original on April 2, 2019. Retrieved March 2, 2019.
  5. Thomas Birchard (October 10, 2018). Hurricane Kilo (PDF) (Report). Tropical Cyclone Report. Honolulu, Hawaii: Central Pacific Hurricane Center. Retrieved June 9, 2019.
  6. Lixion A. Avila (February 26, 2016). 2015 Eastern North Pacific Hurricane Season (PDF) (Report). Annual Summary. Miami, Florida: National Hurricane Center. Retrieved March 2, 2019.
  7. Chris Brenchley (December 18, 2015). Historic Hurricane Season – 2015 Summary for the Central Pacific Basin (PDF) (Report). Honolulu, Hawaii: Central Pacific Hurricane Center. Archived from the original (PDF) on April 2, 2019. Retrieved March 2, 2019.
  8. Robbie Berg (May 28, 2015). Tropical Depression One-E Discussion Number 1 (Report). Miami, Florida: National Hurricane Center. Retrieved June 27, 2015.
  9. "About the Central Pacific Hurricane Center". National Oceanographic and Atmospheric Administration. Retrieved August 18, 2019.
  10. Michael J. Brennan (August 6, 2015). Hurricane Andres (PDF) (Report). Tropical Cyclone Report. Miami, Florida: National Hurricane Center. Retrieved December 6, 2015.
  11. Richard J. Pasch & David P. Roberts (November 30, 2015). Hurricane Blanca (PDF) (Report). Tropical Cyclone Report. Miami, Florida: National Hurricane Center. Retrieved December 8, 2015.
  12. Jeff Masters (June 8, 2015). "Tropical Storm Blanca Hits Baja a Month Earlier Than Their Previous Earliest Landfall". Weather Underground. Retrieved September 25, 2019.
  13. John L. Beven II & Christopher W. Landsea (October 27, 2015). Hurricane Carlos (PDF) (Report). Tropical Cyclone Report. Miami, Florida: National Hurricane Center. Retrieved December 8, 2015.
  14. Stacy R. Stewart; Thomas Birchard (October 17, 2016). Tropical Storm Ela (PDF) (Report). Tropical Cyclone Report. Honolulu, Hawaii: Central Pacific Hurricane Center. Retrieved November 20, 2016.
  15. Derek Wroe (July 9, 2017). Tropical Storm Halola (PDF) (Report). Tropical Cyclone Report. Honolulu, Hawaii: Central Pacific Hurricane Center. Retrieved June 9, 2019.
  16. Christopher Jacobson (April 16, 2018). Tropical Storm Iune (PDF) (Report). Tropical Cyclone Report. Honolulu, Hawaii: Central Pacific Hurricane Center. Retrieved June 9, 2019.
  17. Todd B. Kimberlain (October 27, 2015). Hurricane Dolores (PDF) (Report). Tropical Cyclone Report. Miami, Florida: National Hurricane Center. Retrieved December 8, 2015.
  18. Daniel P. Brown (September 16, 2015). Tropical Storm Enrique (PDF) (Report). Tropical Cyclone Report. Miami, Florida: National Hurricane Center. Retrieved December 8, 2015.
  19. John P. Cangialosi (September 3, 2015). Tropical Storm Felicia (PDF) (Report). Tropical Cyclone Report. Miami, Florida: National Hurricane Center. Retrieved December 8, 2015.
  20. Robbie Berg (September 9, 2015). Tropical Depression Eight-E (PDF) (Report). Tropical Cyclone Report. Miami, Florida: National Hurricane Center. Retrieved December 9, 2015.
  21. Lixion A. Avila (September 29, 2015). Hurricane Guillermo (PDF) (Report). Tropical Cyclone Report. Miami, Florida: National Hurricane Center. Retrieved December 8, 2015.
  22. Eric S. Blake (October 29, 2015). Hurricane Hilda (PDF) (Report). Tropical Cyclone Report. Miami, Florida: National Hurricane Center. Retrieved December 9, 2015.
  23. Richard J. Pasch (February 16, 2016). Tropical Depression Eleven-E (PDF) (Report). Tropical Cyclone Report. Miami, Florida: National Hurricane Center. Retrieved February 27, 2016.
  24. Derek Wroe (August 1, 2017). Hurricane Loke (PDF) (Report). Tropical Cyclone Report. Honolulu, Hawaii: Central Pacific Hurricane Center. Retrieved June 9, 2019.
  25. John L. Beven II; Christopher Jacobson (August 17, 2018). Hurricane Ignacio (PDF) (Report). Tropical Cyclone Report. Miami, Florida and Honolulu, Hawaii: National Hurricane Center. Retrieved August 21, 2018.
  26. Stacy R. Stewart; Jeffrey Powell (February 4, 2016). Hurricane Jimena (PDF) (Report). Tropical Cyclone Report. Miami, Florida: National Hurricane Center. Retrieved February 9, 2016.
  27. Todd B. Kimberlain (November 28, 2015). Tropical Storm Kevin (PDF) (Report). Tropical Cyclone Report. Miami, Florida: National Hurricane Center. Retrieved December 9, 2015.
  28. Daniel P. Brown (November 12, 2015). Hurricane Linda (PDF) (Report). Tropical Cyclone Report. Miami, Florida: National Hurricane Center. Retrieved December 9, 2015.
  29. Jon Jelsema (June 1, 2016). Tropical Storm Malia (PDF) (Report). Tropical Cyclone Report. Honolulu, Hawaii: Central Pacific Hurricane Center. Archived from the original (PDF) on June 20, 2018. Retrieved June 20, 2018.
  30. John P. Cangialosi (January 11, 2016). Tropical Depression Sixteen-E (PDF) (Report). Tropical Cyclone Report. Miami, Florida: National Hurricane Center. Retrieved January 14, 2016.
  31. Sam Houston; Thomas Birchard (November 16, 2016). Tropical Storm Niala (Report). Tropical Cyclone Report. Honolulu, Hawaii: Central Pacific Hurricane Center. Archived from the original on February 4, 2019. Retrieved January 8, 2017.
  32. Robbie Berg (January 5, 2016). Hurricane Marty (PDF) (Report). Tropical Cyclone Report. Miami, Florida: National Hurricane Center. Retrieved January 15, 2016.
  33. Sam Houston; Derek Wroe (November 21, 2016). Hurricane Oho (Report). Tropical Cyclone Report. Honolulu, Hawaii: Central Pacific Hurricane Center. Archived from the original on September 4, 2018. Retrieved December 23, 2016.
  34. Thomas Birchard (October 3, 2015). Tropical Depression Seven-C Discussion Number 1 (Report). Honolulu, Hawaii: Central Pacific hurricane Center. Archived from the original on July 18, 2018. Retrieved October 3, 2015.
  35. Christopher Jacobson (October 10, 2017). Tropical Depression Eight-C (PDF) (Report). Tropical Cyclone Report. Honolulu, Hawaii: Central Pacific Hurricane Center. Retrieved June 9, 2019.
  36. Lixion A. Avila (December 8, 2015). Tropical Storm Nora (PDF) (Report). Tropical Cyclone Report. Miami, Florida: National Hurricane Center. Retrieved December 9, 2015.
  37. Eric S. Blake; Jon Jelsema (February 9, 2016). Hurricane Olaf (PDF) (Report). Tropical Cyclone Report. Miami, Florida: National Hurricane Center. Retrieved May 7, 2016.
  38. Todd B. Kimberlain; Eric S. Blake & John P. Cangialosi (February 4, 2016). Hurricane Patricia (PDF) (Report). Tropical Cyclone Report. Miami, Florida: National Hurricane Center. Retrieved February 9, 2016.
  39. Eric S. Blake & Stacy R. Stewart (October 24, 2015). Hurricane Patricia Advisory Number 17 (Advisory). Miami, Florida: National Hurricane Center. Retrieved February 9, 2016.
  40. John L. Beven II (January 20, 2016). Tropical Storm Rick (PDF) (Report). Tropical Cyclone Report. Miami, Florida: National Hurricane Center. Retrieved February 9, 2016.
  41. John L. Beven II (January 29, 2016). Hurricane Sandra (PDF) (Report). Tropical Cyclone Report. Miami, Florida: National Hurricane Center. Retrieved February 9, 2016.
  42. Sam Houston; Thomas Birchard (December 22, 2016). Tropical Depression Nine-C (Report). Tropical Cyclone Report. Honolulu, Hawaii: Central Pacific Hurricane Center. Archived from the original on July 27, 2018. Retrieved January 8, 2017.
Preceded by
2014
Pacific hurricane season timelines
2015
Succeeded by
2016

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