Timeline of the 2018 Pacific hurricane season

The 2018 Pacific hurricane season was an event in the annual cycle of tropical cyclone formation, in which tropical cyclones form in the eastern Pacific Ocean. The season officially started on May 15 in the eastern Pacific—east of 140°W—and began 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 eastern Pacific basin.[1] The season's first storm, Tropical Depression One-E, developed on May 10; the season's final storm, Tropical Storm Xavier, dissipated as a tropical cyclone on November 5.

Timeline of the
2018 Pacific hurricane season
Season summary map
Season boundaries
First system formedMay 10, 2018
Last system dissipatedNovember 5, 2018
Strongest system
NameWalaka
Maximum winds160 mph (260 km/h)
(1-minute sustained)
Lowest pressure921 mbar (hPa; 27.2 inHg)
Longest lasting system
NameSergio
Duration13.50 days
Storm articles

The 2018 hurricane season was exceptionally active and featured the highest Accumulated Cyclone Energy since reliable records began in 1971.[2] Throughout the season, 26 tropical depressions developed, 23 of which became tropical storms, 13 of them reached hurricane strength, and 10 achieved major hurricane intensity.[3][nb 1] The basin saw above-average activity across all regions from the International Dateline to the west coast of Mexico and Central America. Activity peaked during a 10-week period from early August to early October, with several long-lived and powerful hurricanes developing. Several storms had significant land impacts, including Hurricane Lane in Hawaii and Hurricane Willa in Mexico. In contrast to the similarly active 2015 Pacific hurricane season, 2018 was not significantly influenced by the El Niño–Southern Oscillation. Instead, low pressures and increased sea surface temperatures associated with the Pacific Meridional Mode supported the development intense and long-lived storms.[2]

Four time zones are utilized in the basin: Central for storms east of 106°W, Mountain between 114.9°W and 106°W, Pacific between 140°W and 115°W,[5] and Hawaii–Aleutian for storms between the International Date Line and 140°W. 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 is included. This timeline documents tropical cyclone formations, strengthening, weakening, landfalls, extratropical transitions, and dissipations during the season.

Timeline of events
Hurricane WillaHurricane WalakaHurricane Olivia (2018)Hurricane Lane (2018)Hurricane Hector (2018)Tropical Storm Carlotta (2018)Hurricane Bud (2018)Saffir–Simpson scale
Summary of tropical cyclones during the 2018 Pacific hurricane season
Storm Formation[nb 2] Dissipation[nb 3] Peak Saffir–Simpson scale category Ref.
Number Name
01−E One-E May 10 May 11 Tropical Depression [6]
02−E Aletta June 6 June 11 Category 4 hurricane [7]
03−E Bud June 9 June 15 Category 4 hurricane [8]
04−E Carlotta June 14 June 18 Tropical Storm [9]
05−E Daniel June 24 June 26 Tropical Storm [10]
06−E Emilia June 27 July 1 Tropical Storm [11]
07−E Fabio June 30 July 6 Category 2 hurricane [12]
08−E Gilma July 26 July 29 Tropical Storm [13]
09−E Nine-E July 26 July 27 Tropical Depression [14]
10−E Hector July 31 August 16[nb 4] Category 4 hurricane [15]
11−E Ileana August 4 August 7 Tropical Storm [16]
12−E John August 5 August 10 Category 2 hurricane [17]
13−E Kristy August 6 August 12 Tropical Storm [18]
14−E Lane August 15 August 28 Category 5 hurricane [19]
15−E Miriam August 26 September 2 Category 2 hurricane [20]
16−E Norman August 28 September 8 Category 4 hurricane [21]
17−E Olivia August 28 September 8 Category 4 hurricane [22]
96C[nb 5] Disturbance September 1 September 3 Subtropical Storm [23][24][25]
18−E Paul September 8 September 11 Tropical Storm [26]
19−E Nineteen-E September 19 September 20 Tropical Depression [27]
20−E Rosa September 25 October 2 Category 4 hurricane [28]
21−E Sergio September 29 October 12 Category 4 hurricane [29]
01−C Walaka September 29 October 6 Category 5 hurricane [30]
22−E Tara October 14 October 16 Tropical Storm [31]
23−E Vicente October 19 October 23 Tropical Storm [32]
24−E Willa October 20 October 24 Category 5 hurricane [33]
25−E Xavier November 2 November 5 Tropical Storm [34]

May
Tropical Depression One-E several hours after being classified as a tropical cyclone on May 10

May 10

May 11

May 13

May 15
  • The 2018 Eastern Pacific hurricane season officially begins.[1]

June

June 1
Aletta as a Category 4 hurricane on June 8
  • The 2018 Central Pacific hurricane season officially begins.[1]

June 6

June 7

June 8

June 9

June 10
Hurricane Bud intensifying off the coast of Mexico on June 11

June 11

June 12

June 13
Tropical Storm Carlotta paralleling the coast of Mexico on June 16

June 14

June 15

June 16
  • 06:00 UTC (12:00 a.m. MDT) – Aletta's remnants dissipate roughly 640 mi (1,030 km) southwest of Cabo San Lucas, Baja California Sur.[7]
  • 06:00 UTC (12:00 a.m. MDT) – Bud's remnants open up into a trough of low pressure, approximately 35 mi (55 km) southwest of Huatabampito, Mexico.[8]

June 17

June 19
Tropical Storm Daniel on June 24 at peak intensity

June 24

June 25

June 26

June 27

June 28

June 29

June 30

July

July 1
Hurricane Fabio near peak intensity on July 3

July 2

July 3

July 4
  • 06:00 UTC (11:00 p.m. PDT, July 3) – Emilia's remnants dissipate more than 1,495 miles (2,410 km) west of the southern tip of Baja California.[11]
  • 18:00 UTC (11:00 a.m. PDT) at 17.4°N 121.0°W / 17.4; -121.0 (Hurricane Fabio weakens) – Hurricane Fabio weakens to a Category 1 hurricane roughly 810 miles (1,300 km) west-southwest of the southern tip of the Baja California Peninsula.[12]

July 5

July 6

July 9
  • 12:00 UTC (5:00 a.m. PDT) – Fabio's remnants dissipate more than 1,840 miles (2,960 km) west of the southern tip of the Baja California Peninsula.[12]

July 26

July 27

July 28
  • 00:00 UTC (5:00 p.m. PDT, July 27) – Tropical Depression Nine-E dissipates roughly 1,210 miles (1,945 km) southeast of Hilo, Hawaii.[14]

July 29

July 31

August

August 1

August 2

August 3

August 4
Tropical Storm Ileana near peak intensity off the western coast of Mexico on August 5

August 5

August 6

August 7

August 8

August 9

August 10
Hector as a high-end Category 4 hurricane on August 6

August 11

August 12

August 13

August 14

September

September 1
The unclassified tropical or subtropical cyclone near the International Dateline on September 2

September 2
  • 00:00 UTC (5:00 p.m. PDT, September 1) at 15.4°N 111.2°W / 15.4; -111.2 – Tropical Depression Seventeen-E strengthens into Tropical Storm Olivia about 230 mi (370 km) south of Socorro Island.[22]
  • 17:30 UTC (7:30 a.m. HST) at 40.6°N 177.1°W / 40.6; -177.1 – Dvorak assessments of Invest 96C indicate it to have weakened to a tropical depression about 780 mi (1,255 km) south of Adak, Alaska.[38]

September 3
  • 5:30 UTC (7:30 p.m. HST, September 2) at 42.6°N 178.3°W / 42.6; -178.3 – The Satellite Products and Service Division issues its final bulletin on Invest 96C as Dvorak assessments indicate the system to be too weak to classify as a tropical cyclone about 645 mi (1,040 km) south of Adak, Alaska.[25]

September 4

September 5
  • 00:00 UTC (5:00 p.m. PDT, September 4) at 16.8°N 119.6°W / 16.8; -119.6 – Hurricane Olivia reaches its initial peak intensity with winds of 125 mph (205 km/h) and a pressure of 954 mbar (hPa; 28.17 inHg) approximately 335 mi (540 km) west-southwest of Clarion Island.[22]
  • 12:00 UTC (5:00 a.m. PDT) at 17.0°N 121.8°W / 17.0; -121.8 – Increasing wind shear causes Hurricane Olivia to weaken to a Category 2 hurricane approximately 470 mi (760 km) west-southwest of Clarion Island.[22]

September 6
  • 12:00 UTC (5:00 a.m. PDT) at 18.1°N 126.6°W / 18.1; -126.6 – Hurricane Olivia unexpectedly re-intensifies into a Category 3 hurricane approximately 780 mi (1,255 km) west of Clarion Island.[22]

September 7
  • 00:00 UTC (5:00 p.m. PDT, September 6) at 18.9°N 129.2°W / 18.9; -129.2 – Hurricane Olivia further intensifies into a Category 4 hurricane and reaches its peak intensity with maximum winds of 130 mph (215 km/h) and a pressure of 951 mbar (hPa; 28.08 inHg) about 950 mi (1,525 km) west of Clarion Island.[22]
  • 06:00 UTC (11:00 p.m. PDT, September 6) at 19.4°N 130.5°W / 19.4; -130.5 – Hurricane Olivia weakens to a Category 3 hurricane about 1,035 mi (1,665 km) west-northwest of Clarion Island.[22]
  • 12:00 UTC (5:00 a.m. PDT) at 19.9°N 131.8°W / 19.9; -131.8 – Hurricane Olivia further weakens to a Category 2 hurricane approximately 1,120 mi (1,800 km) west-northwest of Clarion Island.[22]

September 8

September 9
  • 00:00 UTC (2:00 p.m. HST, September 8) at 21.8°N 140.2°W / 21.8; -140.2 – Hurricane Olivia enters the Central Pacific Hurricane Center's area of responsibility.[22]
  • 00:00 UTC (5:00 p.m. PDT, September 8) at 16.0°N 117.0°W / 16.0; -117.0 – Tropical Depression Eighteen-E strengthens into Tropical Storm Paul roughly 220 mi (355 km) southwest of Clairon Island.[26]
  • 18:00 UTC (11:00 a.m. PDT) at 18.1°N 118.6°W / 18.1; -118.6 – Tropical Storm Paul achieves its peak intensity with winds of 45 mph (75 km/h) and a pressure of 1002 mbar (29.59 inHg) about 250 mi (400 km) west of Clairon Island.[26]

September 11
  • 06:00 UTC (8:00 p.m. HST, September 10) at 21.9°N 149.8°W / 21.9; -149.8 – Hurricane Olivia weakens to a tropical storm approximately 375 mi (605 km) northeast of Hilo, Hawaii.[22]
  • 06:00 UTC (11:00 a.m. PDT, September 10) at 21.8°N 122.6°W / 21.8; -122.6 – Tropical Storm Paul weakens to a tropical depression about 560 mi (900 km) northwest of Clairon Island.[26]

September 12
Animated infrared satellite imagery of Tropical Storm Olivia making landfalls on Maui and Lanai, Hawaii, on September 12

September 13

September 14
  • 06:00 UTC (8:00 p.m. HST, September 13) at 18.9°N 164.9°W / 18.9; -164.9 – Tropical Storm Olivia degenerates into a remnant low about 485 mi (785 km) southwest of Honolulu, Hawaii.[22]
  • 18:00 UTC (8:00 a.m. HST) – The remnants of Olivia degenerate into a trough, marking its dissipation.[22]

September 15
  • 00:00 UTC (5:00 p.m. PDT, September 14) – The remnants of Tropical Storm Paul dissipate over the open ocean.[26]

September 19

September 20
  • 00:00 UTC (8:00 p.m. MDT, September 19) at 27.3°N 110.9°W / 27.3; -110.9 – Tropical Depression Nineteen-E reaches its peak intensity with winds of 35 mph (55 km/h) and a pressure of 1002 mbar (29.6 inHg) about 60 mi (95 km) west-southwest of Ciudad Obregón. The National Hurricane Center noted in its final report that the system may have briefly become a tropical storm before landfall but data were inconclusive.[27]
  • 03:00 UTC (11:00 p.m. MDT, September 19) at 27.6°N 110.6°W / 27.6; -110.6 – Tropical Depression Nineteen-E makes landfall at peak strength between Ciudad Obregón and Guaymas.[27]
  • 06:00 UTC (2:00 a.m. MDT) – Tropical Depression Nineteen-E rapidly dissipates over mountainous terrain about 50 mi (80 km) east of Guaymas.[27]

September 29

September 30
  • 18:00 UTC (8:00 a.m. HST) at 11.6°N 164.5°W / 11.6; -164.5 – Tropical Storm Walaka strengthens into a Category 1 hurricane about 800 mi (1,285 km) south-southwest of Honolulu, Hawaii.[30]

October

October 1
  • 06:00 UTC (8:00 p.m. HST, September 30) at 11.8°N 167.1°W / 11.8; -167.1 – Hurricane Walaka rapidly intensifies into a Category 2 hurricane about 895 mi (1,440 km) southwest of Honolulu, Hawaii.[30]
  • 12:00 UTC (2:00 a.m. HST) at 12.0°N 168.0°W / 12.0; -168.0 – Hurricane Walaka rapidly intensifies into a Category 3 hurricane about 925 mi (1,490 km) southwest of Honolulu, Hawaii.[30]
  • 18:00 UTC (8:00 a.m. HST) at 12.5°N 168.8°W / 12.5; -168.8 – Hurricane Walaka rapidly intensifies into a Category 4 hurricane about 885 mi (1,425 km) southwest of Kauai, Hawaii.[30]

October 2
  • 00:00 UTC (2:00 p.m. HST, October 1) at 12.9°N 169.6°W / 12.9; -169.6 – Hurricane Walaka's rapid intensification culminates with it becoming a Category 5 hurricane about 905 mi (1,455 km) southwest of Kauai, Hawaii. Concurrently, it reaches its peak intensity with maximum winds of 160 mph (260 km/h) and a minimum pressure of 921 mbar (hPa; 27.20 inHg).[30]

October 14

October 15

October 16

October 19

October 20
Hurricane Willa at its peak intensity on October 22 just southwest of Mexico

October 21

October 22

October 23

October 24

November
Tropical Storm Xavier at its peak intensity near western Mexico on November 4

November 2

November 3

November 4

November 6

November 9
  • 06:00 UTC (11:00 p.m. MST, November 8) – Xavier's remnants dissipate while located more than 345 mi (555 km/h) west-southwest of Socorro Island.[34]

November 30
  • The 2018 Pacific hurricane season officially ends.[1]

Notes
  1. A major hurricane is a storm that ranks as Category 3 or higher on the Saffir–Simpson hurricane wind scale.[4]
  2. Formation indicates the date when a system became a tropical or subtropical cyclone.
  3. Dissipation indicates the date when a system ceased being a tropical or subtropical cyclone by way of dissipation, degeneration into a remnant low, or transition into an extratropical cyclone.
  4. Hurricane Hector moved west of the International Dateline on August 13 and exited the Central Pacific Hurricane Center's area of responsibility. The system ultimately dissipated on August 16.[15]
  5. Although not officially warned upon, Invest 96C was analyzed as a subtropical cyclone by the Central Pacific Hurricane Center and a tropical cyclone by the National Oceanic and Atmospheric Administration's Satellite Products and Service Division.
  6. The figures for maximum sustained winds and position estimates are rounded to the nearest 5 units (miles per hour, kilometers per hour, 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.
  7. The record for earliest tropical cyclone formation in the Eastern Pacific proper as of 2021 is 2020's Tropical Depression One-E on April 25.[36]
  8. Operationally, the depression that became Hurricane Walaka was not warned upon until 21:00 UTC (11 a.m. HST) by which time it was already a tropical storm.[40] It would have received the designation "One-C" prior to being named.[30]

See also

References
  1. Christopher W. Landsea; Neal Dorst; Erica Rule (June 2, 2011). "G: Tropical Cyclone Climatology". Hurricane Research Division: Frequently Asked Questions. Atlantic Oceanographic and Meteorological Laboratory. National Oceanic and Atmospheric Administration. G1) When is hurricane season ?. Retrieved May 28, 2018.
  2. Wood, Kimberly M.; Klotzbach, Philip J.; Collins, Jennifer M.; Schreck, Carl J. (August 2019). "The Record‐Setting 2018 Eastern North Pacific Hurricane Season". Geophysical Research Letters. 46 (16): 10, 072–10, 081. Bibcode:2019GeoRL..4610072W. doi:10.1029/2019GL083657.
  3. National Hurricane Center; Hurricane Research Division; Central Pacific Hurricane Center. "The Northeast and North Central Pacific hurricane database 1949–2019". United States National Oceanic and Atmospheric Administration's National Weather Service. Retrieved October 1, 2020. A guide on how to read the database is available here.
  4. 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.
  5. Robbie J. Berg (May 28, 2015). Tropical Depression One-E Discussion Number 1 (Report). Miami, Florida: National Hurricane Center. Retrieved May 28, 2018.
  6. Berg, Robbie (July 12, 2018). Tropical Depression One-E (EP012018) (PDF) (Report). Tropical Cyclone Report. National Hurricane Center. Retrieved March 26, 2019.
  7. Avila, Lixion A. (July 31, 2018). Hurricane Aletta (EP022018) (PDF) (Report). Tropical Cyclone Report. National Hurricane Center. Retrieved March 26, 2019.
  8. Blake, Eric S. (October 24, 2018). Hurricane Bud (EP032018) (PDF) (Report). Tropical Cyclone Report. National Hurricane Center. Retrieved March 27, 2019.
  9. Pasch, Richard J. (December 19, 2018). Tropical Storm Carlotta (EP042018) (PDF) (Report). Tropical Cyclone Report. National Hurricane Center. Retrieved March 28, 2019.
  10. Beven II, John L. (February 11, 2019). Tropical Storm Daniel (EP052018) (PDF) (Report). Tropical Cyclone Report. National Hurricane Center. Retrieved March 28, 2019.
  11. Stewart, Stacy R. (August 21, 2018). Tropical Storm Emilia (EP062018) (PDF) (Report). Tropical Cyclone Report. National Hurricane Center. Retrieved March 28, 2019.
  12. Brown, Daniel P. (November 14, 2018). Hurricane Fabio (EP072018) (PDF) (Report). Tropical Cyclone Report. National Hurricane Center. Retrieved March 28, 2019.
  13. Cangialosi, John P. (November 6, 2018). Tropical Storm Gilma (EP092018) (PDF) (Report). Tropical Cyclone Report. National Hurricane Center. Retrieved March 28, 2019.
  14. Zelinsky, David A. (August 24, 2018). Tropical Depression Nine-E (EP092018) (PDF) (Report). Tropical Cyclone Report. National Hurricane Center. Retrieved March 28, 2019.
  15. Berg, Robbie; Houston, Sam; Birchard, Thomas (July 1, 2019). Hurricane Hector (EP102018) (PDF) (Report). Tropical Cyclone Report. National Hurricane Center and Central Pacific Hurricane Center. Retrieved December 21, 2020.
  16. Avila, Lixion A. (November 9, 2018). Tropical Storm Ileana (EP112018) (PDF) (Report). Tropical Cyclone Report. National Hurricane Center. Retrieved March 28, 2019.
  17. Blake, Eric S. (November 20, 2018). Hurricane John (EP120218) (PDF) (Report). Tropical Cyclone Report. National Hurricane Center. Retrieved March 22, 2020.
  18. Latto, Andrew S.; Pasch, Richard J. (March 6, 2019). Tropical Storm Kristy (EP132018) (PDF) (Report). Tropical Cyclone Report. National Hurricane Center. Retrieved March 22, 2020.
  19. Beven II, John L.; Wroe, Derek (December 16, 2019). Hurricane Lane (EP142018) (PDF) (Report). Tropical Cyclone Report. National Hurricane Center and Central Pacific Hurricane Center. Retrieved December 21, 2020.
  20. Stewart, Stacy R.; Jacobson, Chris; Houston, Sam (March 21, 2019). Hurricane Miriam (EP152018) (PDF) (Report). Tropical Cyclone Report. National Hurricane Center and Central Pacific Hurricane Center. Retrieved December 21, 2020.
  21. Brown, Daniel P.; Powell, Jeff (August 8, 2019). Hurricane Norman (EP162018) (PDF) (Report). Tropical Cyclone Report. National Hurricane Center and Central Pacific Hurricane Center. Retrieved December 21, 2020.
  22. Cangialosi, John P.; Jelsema, Jon (July 25, 2019). Hurricane Olivia (EP172018) (PDF) (Report). Tropical Cyclone Report. National Hurricane Center and Central Pacific Hurricane Center. Retrieved December 14, 2020.
  23. Turk, Michael (September 1, 2020). [96C Tropical Cyclone Position at 17:30 UTC on September 1] (Report). National Oceanic and Atmospheric Administration Satellite Products and Service Division. Retrieved December 28, 2020.
  24. National Weather Service Office in Honolulu, Hawaii [@NWSHonolulu] (August 31, 2018). "Thanks for pointing this out. The circulation that was associated with Lane dissipated several days ago and was absorbed by the same upper level low responsible for this feature. This feature is now a sub-tropical gale low, but we will continue to keep an eye on it!" (Tweet). Retrieved December 28, 2020 – via Twitter.
  25. Kibler, Jamie (September 3, 2020). [96C Tropical Cyclone Position at 5:30 UTC on September 3] (Report). National Oceanic and Atmospheric Administration Satellite Products and Service Division. Retrieved December 28, 2020.
  26. Zelinsky, David A. (October 4, 2018). Tropical Storm Paul (EP182018) (PDF) (Report). Tropical Cyclone Report. National Hurricane Center. Retrieved December 21, 2020.
  27. Berg, Robbie (November 29, 2018). Tropical Depression Nineteen-E (EP192018) (PDF) (Report). Tropical Cyclone Report. National Hurricane Center. Retrieved December 21, 2020.
  28. Avila, Lixion A. (July 23, 2019). Hurricane Rosa (EP202018) (PDF) (Report). Tropical Cyclone Report. National Hurricane Center. Retrieved December 21, 2020.
  29. Blake, Eric S. (February 26, 2019). Hurricane Sergio (EP212018) (PDF) (Report). Tropical Cyclone Report. National Hurricane Center. Retrieved December 21, 2020.
  30. Birchard, Thomas; Houston, Sam (June 9, 2020). Hurricane Walaka (CP012018) (PDF) (Report). Tropical Cyclone Report. Central Pacific Hurricane Center. Retrieved December 16, 2020.
  31. Pasch, Richard J. (March 28, 2019). Tropical Storm Tara (EP222018) (PDF) (Report). Tropical Cyclone Report. National Hurricane Center. Retrieved December 21, 2020.
  32. Latto, Andrew S.; Beven II, John L. (April 10, 2019). Tropical Storm Vicente (EP232018) (PDF) (Report). Tropical Cyclone Report. National Hurricane Center. Retrieved December 21, 2020.
  33. Brennan, Michael J. (April 2, 2019). Hurricane Willa (EP242018) (PDF) (Report). Tropical Cyclone Report. National Hurricane Center. Retrieved December 21, 2020.
  34. Brown, Daniel P. (February 8, 2019). Tropical Storm Xavier (EP252018) (PDF) (Report). Tropical Cyclone Report. National Hurricane Center. Retrieved March 27, 2019.
  35. "Tropical Depression One-E Has Started the 2018 Eastern Pacific Hurricane Season Early, But it Won't Threaten Land". The Weather Channel. May 11, 2018. Retrieved December 14, 2018.
  36. Cangialosi, John (June 30, 2020). Tropical Depression One-E (EP012020) (PDF) (Report). Tropical Cyclone Report. Retrieved December 14, 2020.
  37. Turk, Michael (September 1, 2020). [96C Tropical Cyclone Position at 23:30 UTC on September 1] (Report). National Oceanic and Atmospheric Administration Satellite Products and Service Division. Retrieved December 28, 2020.
  38. Fisher (September 2, 2020). [96C Tropical Cyclone Position at 17:30 UTC on September 2] (Report). National Oceanic and Atmospheric Administration Satellite Products and Service Division. Retrieved December 28, 2020.
  39. Gomes, Andrew (September 13, 2018). "Olivia makes brief but historic landfall on Maui". Honolulu Star Advertiser. Archived from the original on September 14, 2018. Retrieved December 14, 2020.
  40. Wroe, Derek R. (September 29, 2018). Tropical Storm Walaka Advisory Number 1 (Report). Central Pacific Hurricane Center. Retrieved December 28, 2020.
  41. Sullivan, Brian K. (October 22, 2020). "Hurricane Willa Becomes Category 5 Storm Off Coast of Mexico". Bloomberg News. Retrieved January 1, 2021.
Preceded by
2017		 Pacific hurricane season timelines
2018		 Succeeded by
2019
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