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Timeline of the 2023 Pacific hurricane season

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Timeline of the
2023 Pacific hurricane season
Season summary map
Season boundaries
First system formedJune 27, 2023
Last system dissipatedNovember 26, 2023
Strongest system
NameOtis
Maximum winds165 mph (270 km/h)
Lowest pressure922 mbar (hPa; 27.23 inHg)
Longest lasting system
NameDora
Duration11.5[nb 1] days
Storm articles
Other years
2021, 2022, 2023, 2024, 2025

The 2023 Pacific hurricane season was a fairly active Pacific hurricane season. In the eastern Pacific basin (east of 140°W), 17 named storms formed; 10 of those became hurricanes, and 8 further intensified into major hurricanes (category 3 or higher on the 5-level Saffir–Simpson wind speed scale). In the central Pacific basin (between 140°W and the International Date Line), no tropical cyclones formed (for the fourth consecutive season), though four entered into the basin from the east.[1][2] The season officially began on May 15, 2023, in the eastern Pacific, and on June 1 in the central Pacific; it ended in both on November 30. These dates, adopted by convention, historically describe the period in each year when most tropical cyclogenesis occurs in these regions of the Pacific.[3] The season's first system, Tropical Storm Adrian, developed on June 27, and its last, Tropical Storm Ramon, dissipated on November 26.

This timeline documents tropical cyclone formations, strengthening, weakening, landfalls, extratropical transitions, and dissipations during the season. It includes information that was not released throughout the season, meaning that data from post-storm reviews by the National Hurricane Center, such as a storm that was not initially warned upon, has been included.

By convention, meteorologists use one time zone when issuing forecasts and making observations: Coordinated Universal Time (UTC), and also use the 24-hour clock (where 00:00 = midnight UTC).[4] Tropical cyclone advisories in the Eastern North Pacific basin use both UTC and the nautical time zone where the center of the tropical cyclone is currently located. Time zones utilized (east to west) are: Central, Mountain, Pacific and Hawaii. In this timeline, all information is listed by UTC first, with the respective regional time zone included in parentheses. Additionally, figures for maximum sustained winds and position estimates are rounded to the nearest 5 units (knots, miles, or kilometers), following National Hurricane Center practice. Direct wind observations are rounded to the nearest whole number. Atmospheric pressures are listed to the nearest millibar and nearest hundredth of an inch of mercury.

Timeline

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Hurricane OtisHurricane Norma (2023)Tropical Storm Max (2023)Hurricane Lidia (2023)Hurricane Jova (2023)Hurricane HilaryHurricane Dora (2023)Saffir–Simpson scale

May

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  • No tropical cyclones form in the Eastern Pacific basin during the month of May.

May 15

  • The Eastern Pacific hurricane season officially begins.[3]

June

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June 1

  • The Central Pacific hurricane season officially begins.[3]

June 27

June 28

June 29

A photograph of Hurricane Adrian and Tropical Storm Beatriz off the Pacific coast of Mexico on June 29, 2023.
Satellite image of Hurricane Adrian (left) and Tropical Storm Beatriz (right) off the southwestern coast of Mexico on June 29

June 30

July

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July 1

July 2

July 11

July 13

July 14

A photograph of Hurricane Calvin at peak intensity as a Category 3 hurricane on July 14, 2023.
Satellite image of Hurricane Calvin at peak intensity on July 14

July 15

July 16

July 17

July 19

July 20

July 21

July 22

July 31

August

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August 1

August 2

August 3

August 4

August 5

August 6

A photograph of Hurricane Dora at peak intensity as a strong Category 4 hurricane over the eastern Pacific Ocean on August 6, 2023.
Satellite image of Hurricane Dora at peak intensity early on August 6

August 7

August 10

August 11

August 12

August 13

August 14

August 15

August 16

August 17

August 18

A photograph of Hurricane Hilary off the western shores of Mexico as a Category 4 hurricane on August 18, 2023.
Satellite image of Hurricane Hilary at Category 4 strength while paralleling the coast of Mexico on August 18

August 19

August 20

August 26

August 27

August 29

September

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September 4

September 5

September 6

September 7

A photograph of Hurricane Jova as a Category 5 hurricane over the eastern Pacific Ocean on September 7, 2023.
Satellite image of Hurricane Jova at peak intensity early on September 7

September 8

September 9

September 10

September 15

September 17

September 18

September 19

September 21

September 22

September 23

September 25

October

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October 3

October 8

October 9

October 10

A photograph of Hurricane Lidia approaching the Pacific coast of central Mexico as a major hurricane on October 10, 2024.
Satellite image of Hurricane Lidia shortly before landfall in Jalisco on October 10

October 11

October 17

October 18

October 19

October 21

October 22

October 23

October 24

October 25

An animation of Hurricane Otis making landfall near Acapulco on October 25, 2024.
Enhanced infrared imagery of Hurricane Otis making landfall near Acapulco on October 25

October 28

October 30

November

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November 1

November 5

November 21

November 24

November 25

November 26

November 30

  • The 2023 Pacific hurricane season officially ends in the Eastern and Central Pacific basins.[3]

See also

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Notes

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  1. ^ Denotes number of days Hurricane Dora existed in the Eastern and Central Pacific basins, before crossing over into the Western Pacific basin.
  2. ^ Beatriz formed from the same tropical wave that had previously spawned Atlantic Tropical Storm Bret.[6]
  3. ^ Due to the threat the developing system posed to southwestern Mexico, the National Hurricane Center initiated advisories on it, designating it Potential Tropical Cyclone Two-E at 03:00 UTC on June 29.[7]
  4. ^ The position is as of 18:00 UTC (8:00 a.m. HST) on August 6.[10]
  5. ^ Due to the threat the developing system posed to southern Mexico, the National Hurricane Center initiated advisories on it, designating it Potential Tropical Cyclone Sixteen-E at 03:00 UTC on October 8 (10:00 p.m. CDT on October 7).[24]
  6. ^ Otis was the first Pacific hurricane on record to make landfall at Category 5 intensity, thus becoming the strongest hurricane to make landfall on the Pacific coast of Mexico.[28]
  7. ^ On November 5, daylight saving time ended in most areas of the basin, which resulted in the gap between UTC and local time widening by one hour. Hawaii was not affected; the state has not observed daylight saving time since 1945.[30][31]

References

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  1. ^ O'Leary, Maureen (November 28, 2023). "2023 Atlantic hurricane season ranks 4th for most-named storms in a year". National Oceanic and Atmospheric Administration. Retrieved November 29, 2023.
  2. ^ 2023 Hurricane Season Summary for the Central Pacific Basin (PDF) (Report). NOAA. November 28, 2023. Retrieved November 29, 2023.
  3. ^ a b c d "Hurricanes Frequently Asked Questions". Miami, Florida: Atlantic Oceanographic and Meteorological Laboratory. June 1, 2023. Retrieved June 1, 2023.
  4. ^ "Understanding the Date/Time Stamps". Miami, Florida: National Hurricane Center. Retrieved July 20, 2022.
  5. ^ a b c d e f g h Pasch, Richard (November 30, 2023). Tropical Cyclone Report: Hurricane Adrian (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved December 3, 2023.
  6. ^ a b c d e f Blake, Eric (January 18, 2024). Tropical Cyclone Report: Hurricane Beatriz (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved February 2, 2024.
  7. ^ Bucci, Lisa; Pasch, Richard (June 28, 2023). Potential Tropical Cyclone Two-E Discussion Number 1 (Report). Miami, Florida: National Hurricane Center. Retrieved June 29, 2023.
  8. ^ a b c d e f g h i j Philippe, Papin (February 28, 2024). Tropical Cyclone Report: Hurricane Calvin (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved March 12, 2024.
  9. ^ a b c Berg, Robbie (August 11, 2023). Tropical Cyclone Report: Tropical Depression Four-E (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved August 23, 2023.
  10. ^ a b c d e f g h i j k l m n o p q Bucci, Lisa (March 5, 2024). Tropical Cyclone Report: Hurricane Dora (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved March 12, 2024.
  11. ^ a b c d Kelly, Larry (November 14, 2023). Tropical Cyclone Report: Tropical Storm Eugene (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved November 18, 2023.
  12. ^ 2023 Hurricane Season Summary for the Central Pacific Basin (PDF) (Report). Honolulu, Hawaii: Central Pacific Hurricane Center. November 28, 2023. Retrieved March 26, 2024.
  13. ^ Prognostic Reasoning for Typhoon 05E (Dora) Warning No. 47 (Report). Honolulu, Hawaii: United States Joint Typhoon Warning Center. August 12, 2023. Archived from the original on August 12, 2023. Retrieved August 12, 2023.
  14. ^ a b c d e f g h i j k Berg, Robbie (November 15, 2023). Tropical Cyclone Report: Hurricane Fernanda (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved November 21, 2023.
  15. ^ a b c d Kelly, Larry (November 8, 2023). Tropical Cyclone Report: Tropical Storm Greg (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved November 8, 2023.
  16. ^ a b c d e f g h i j k l m n Rinehart, Brad (February 12, 2024). Tropical Cyclone Report: Hurricane Hilary (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved February 24, 2024.
  17. ^ a b c d Blake, Eric (February 15, 2024). Tropical Cyclone Report: Tropical Storm Irwin (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved February 24, 2024.
  18. ^ a b c d e f g h i j k l Bucci, Lisa (February 1, 2024). Tropical Cyclone Report: Hurricane Jova (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved February 8, 2024.
  19. ^ Pasch, Richard (September 5, 2023). Tropical Storm Jova Advisory Number 3 (Report). Miami, Florida: National Hurricane Center. Retrieved September 5, 2023.
  20. ^ a b c d Brown, Daniel; Wroe, Derek (November 28, 2023). Tropical Cyclone Report: Tropical Depression Twelve-E (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved November 28, 2023.
  21. ^ a b c d e Papin, Philippe (December 8, 2023). Tropical Cyclone Report: Tropical Storm Kenneth (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved December 9, 2023.
  22. ^ a b c Pasch, Richard (January 31, 2024). Tropical Cyclone Report: Tropical Depression Fourteen-E (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved February 2, 2023.
  23. ^ a b c d e f g Pasch, Richard (March 15, 2024). Tropical Cyclone Report: Hurricane Lidia (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved March 17, 2024.
  24. ^ Brown, Daniel (October 7, 2023). Potential Tropical Cyclone Sixteen-E Advisory Number 1 (Report). Miami, Florida: National Hurricane Center. Retrieved October 8, 2023.
  25. ^ a b c d Berg, Robbie (January 11, 2024). Tropical Cyclone Report: Tropical Storm Max (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved February 3, 2024.
  26. ^ a b c d e f g h i j k l Bucci, Lisa (March 15, 2024). Tropical Cyclone Report: Hurricane Norma (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved March 17, 2024.
  27. ^ a b c d e f g h i Reinhart, Brad; Reinhart, Amanda (March 7, 2024). Tropical Cyclone Report: Hurricane Otis (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved March 17, 2024.
  28. ^ Mayes-Osterman, Cybele; Pulver, Dinah Voyles (October 25, 2023). "Hurricane Otis strikes Acapulco as strongest storm to hit Mexico on record". USA Today. Retrieved October 25, 2023.
  29. ^ a b c d Blake, Eric (March 8, 2024). Tropical Cyclone Report: Tropical Storm Pilar (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved March 8, 2024.
  30. ^ DeLetter, Emily (November 4, 2023). "What Time Does Daylight Saving Time End? What Is It? When to 'Fall Back' This Weekend". USA Today. McLean, Virginia. Archived from the original on September 20, 2024. Retrieved October 30, 2024.
  31. ^ Enten, Harry (March 12, 2022). "The Daylight Saving Time debate is nothing to lose sleep over". CNN. Atlanta, Georgia. Archived from the original on March 31, 2024. Retrieved May 13, 2024.
  32. ^ a b c d Berg, Robbie (January 18, 2024). Tropical Cyclone Report: Tropical Storm Ramon (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved February 2, 2023.
  33. ^ Kelly, Larry (November 25, 2023). Tropical Storm Ramon Advisory Number 9 (Report). Miami, Florida: National Hurricane Center. Retrieved February 2, 2024.
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