Timeline of the 2025 Pacific hurricane season

Timeline of the
2025 Pacific hurricane season
Season summary map
Season boundaries
First system formedMay 28, 2025
Last system dissipatedOctober 28, 2025
Strongest system
By maximum sustained windsKiko
 • Maximum winds145 mph (230 km/h)
 • Lowest pressure945 mbar (hPa; 27.91 inHg)
By central pressureErick
 • Maximum winds140 mph (220 km/h)
 • Lowest pressure944 mbar (hPa; 27.88 inHg)
Longest lasting system
NameKiko
Duration10.5 days
Storm articles

The 2025 Pacific hurricane season was an active Pacific hurricane season, with an above average number of tropical cyclones occuring east of the International Date Line (IDL) in the Northern Hemisphere. It officially began on May 15 in the eastern Pacific (east of 140°W), and on June 1 in the central Pacific (from the IDL east to 140°W); it will end 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.[1] The season's first system, Tropical Storm Alvin, developed on May 28. The last storm of the season, Tropical Storm Sonia, dissipated on October 28, with no further storms forming in November.

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).[2] 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

May

May 15

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

May 28

May 29

May 31

June

June 1

  • The Central Pacific hurricane season officially begins.[1]

June 8

June 9

June 10

June 11

June 13

June 14

June 16

June 17

June 18

June 19

June 20

June 29

July

July 1

July 2

July 3

July 27

July 28

July 29

July 30

July 31

August

August 1

August 2

August 3

August 4

August 6

August 8

August 9

August 10

August 11

August 12

August 13

August 24

August 25

August 26

August 28

August 31

September

September 2

September 3

September 4

September 5

September 6

September 7

September 8

September 9

September 10

September 11

September 12

September 13

September 14

September 15

September 16

September 21

September 23

September 24

September 25

September 28

September 30

October

October 4

October 5

October 6

October 7

October 8

October 9

October 10

October 11

October 12

October 24

October 25

October 29

November

  • No tropical cyclones form in either the eastern or central Pacific basins during the month of November.

November 30

  • The 2025 Pacific hurricane season officially ends in the Eastern and Central Pacific basins.[1]

See also

Notes

  1. ^ Due to the threat the developing system posed to southwestern Mexico, the National Hurricane Center initiated advisories on it, designating it Potential Tropical Cyclone Four-E at 21:00 UTC (3:00 p.m. CST) on June 12.[6]
  2. ^ Due to the threat the developing system posed to southern Mexico, the National Hurricane Center initiated advisories on it, designating it Potential Tropical Cyclone Five-E at 21:00 UTC (3:00 p.m. CST) on June 16.[8]

References

  1. ^ a b c d "Hurricanes Frequently Asked Questions". Miami, Florida: Atlantic Oceanographic and Meteorological Laboratory. June 1, 2023. Retrieved June 2, 2025.
  2. ^ "Understanding the Date/Time Stamps". Miami, Florida: National Hurricane Center. Retrieved June 2, 2025.
  3. ^ a b c d Reinhart, Brad (June 20, 2025). Tropical Cyclone Report: Tropical Storm Alvin (EP012025) (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved November 20, 2025.
  4. ^ a b c d Hagen, Andrew (July 31, 2025). Tropical Cyclone Report: Hurricane Barbara (EP022025) (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved November 21, 2025.
  5. ^ a b c d Gibbs, Alex; Jelsema, Jon (August 22, 2025). Tropical Cyclone Report: Tropical Storm Cosme (EP032025) (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved November 21, 2025.
  6. ^ Kelly, Larry (June 12, 2025). Potential Tropical Cyclone Four-E Advisory Number 1 (Report). Miami, Florida: National Hurricane Center. Retrieved June 13, 2025.
  7. ^ a b c d Pasch, Richard (August 11, 2025). Tropical Cyclone Report: Tropical Storm Dalila (EP042025) (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved November 22, 2025.
  8. ^ Bucci, Lisa; Mora, Cassandra; Cano, Will (June 16, 2025). Potential Tropical Cyclone Five-E Advisory Number 1 (Report). Miami, Florida: National Hurricane Center. Retrieved June 17, 2025.
  9. ^ a b c d e f g h i Jelsema, Jon (November 10, 2025). Tropical Cyclone Report: Hurricane Erick (EP052025) (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved November 22, 2025.
  10. ^ Hagen, Andrew (June 18, 2025). Hurricane Erick Intermediate Advisory Number 8A (Report). Miami, Florida: National Hurricane Center. Retrieved June 18, 2025.
  11. ^ Pasch, Richard (June 19, 2025). Hurricane Erick Special Advisory Number 11 (Report). Miami, Florida: National Hurricane Center. Retrieved June 19, 2025.
  12. ^ a b c d e f g h i j Kelly, Larry (July 30, 2025). Tropical Cyclone Report: Hurricane Flossie (EP062025) (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved November 22, 2025.
  13. ^ a b c d e f g h i j Blake, Eric (November 18, 2025). Tropical Cyclone Report: Hurricane Iona (CP012025) (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved November 22, 2025.
  14. ^ a b c d Beven, John (October 16, 2025). Tropical Cyclone Report: Tropical Storm Keli (CP022025) (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved November 23, 2025.
  15. ^ a b c d Cangialosi, John (September 15, 2025). Tropical Cyclone Report: Hurricane Gil (EP072025) (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved November 23, 2025.
  16. ^ a b c d e f g h i Gibbs, Alex (November 24, 2025). Tropical Cyclone Report: Hurricane Henriette (EP082025) (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved November 25, 2025.
  17. ^ a b c d e Beven, John (October 23, 2025). Tropical Cyclone Report: Tropical Storm Ivo (EP092025) (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved November 25, 2025.
  18. ^ a b c d Cangialosi, John (September 15, 2025). Tropical Cyclone Report: Tropical Storm Juliette (EP102025) (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved November 26, 2025.
  19. ^ a b c d e f g h i j k l m n Cangialosi, John (November 20, 2025). Tropical Cyclone Report: Hurricane Kiko (EP112025) (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved December 4, 2025.
  20. ^ Pasch, Richard (September 1, 2025). Tropical Depression Twelve-E Advisory Number 1 (Report). Miami, Florida: National Hurricane Center. Retrieved September 14, 2025.
  21. ^ Gallina, Gregg (September 2, 2025). Tropical Storm Lorena Advisory Number 3 (Report). Miami, Florida: National Hurricane Center. Retrieved September 14, 2025.
  22. ^ Beven, Jack (September 3, 2025). Hurricane Lorena Advisory Number 6 (Report). Miami, Florida: National Hurricane Center. Retrieved September 14, 2025.
  23. ^ Berg, Robbie (September 3, 2025). Hurricane Lorena Advisory Number 9 (Report). Miami, Florida: National Hurricane Center. Retrieved September 14, 2025.
  24. ^ Hagen, Andrew; Brown, Daniel (September 4, 2025). Tropical Storm Lorena Advisory Number 11 (Report). Miami, Florida: National Hurricane Center. Retrieved September 14, 2025.
  25. ^ Beven, Jack (September 5, 2025). Post-Tropical Cyclone Lorena Advisory Number 14 (Report). Miami, Florida: National Hurricane Center. Retrieved September 14, 2025.
  26. ^ a b c d e f g h Reinhart, Brad (December 16, 2025). Tropical Cyclone Report: Tropical Storm Mario (EP132025) (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved December 16, 2025.
  27. ^ a b c d e f g Kelly, Larry (October 22, 2025). Tropical Cyclone Report: Hurricane Narda (EP142025) (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved November 29, 2025.
  28. ^ a b c d e f Jelsema, Jon (December 3, 2025). Tropical Cyclone Report: Hurricane Octave (EP152025) (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved December 3, 2025.
  29. ^ Berg, Robbie (October 4, 2025). Tropical Storm Priscilla Advisory Number 1 (Report). Miami, Florida: National Hurricane Center. Retrieved October 13, 2025.
  30. ^ Papin, Philippe (October 5, 2025). Hurricane Priscilla Advisory Number 5 (Report). Miami, Florida: National Hurricane Center. Retrieved October 13, 2025.
  31. ^ Reinhart, Brad (October 7, 2025). Hurricane Priscilla Advisory Number 11 (Report). Miami, Florida: National Hurricane Center. Retrieved October 13, 2025.
  32. ^ Hagen, Andrew (October 7, 2025). Hurricane Priscilla Advisory Number 13 (Report). Miami, Florida: National Hurricane Center. Retrieved October 13, 2025.
  33. ^ Hagen, Andrew (October 8, 2025). Hurricane Priscilla Intermediate Advisory Number 15A (Report). Miami, Florida: National Hurricane Center. Retrieved October 13, 2025.
  34. ^ Hagen, Andrew (October 8, 2025). Tropical Storm Priscilla Intermediate Advisory Number 16A (Report). Miami, Florida: National Hurricane Center. Retrieved October 13, 2025.
  35. ^ Berg, Robbie (October 9, 2025). Tropical Depression Seventeen-E Advisory Number 1 (Report). Miami, Florida: National Hurricane Center. Retrieved October 13, 2025.
  36. ^ Kelly, Larry (October 9, 2025). Tropical Storm Raymond Intermediate Advisory Number 1A (Report). Miami, Florida: National Hurricane Center. Retrieved October 13, 2025.
  37. ^ Bucci, Lisa (October 10, 2025). Tropical Storm Raymond Advisory Number 4 (Report). Miami, Florida: National Hurricane Center. Retrieved October 13, 2025.
  38. ^ Cangialosi, John (October 10, 2025). Post-Tropical Cyclone Priscilla Advisory Number 25 (Report). Miami, Florida: National Hurricane Center. Retrieved October 13, 2025.
  39. ^ Kelly, Larry (October 11, 2025). Tropical Depression Raymond Intermediate Advisory Number 9A (Report). Miami, Florida: National Hurricane Center. Retrieved October 13, 2025.
  40. ^ Hagen, Andrew (October 11, 2025). Post-Tropical Cyclone Raymond Advisory Number 11 (Report). Miami, Florida: National Hurricane Center. Retrieved October 13, 2025.
  41. ^ a b c d Reinhart, Brad (December 5, 2025). Tropical Cyclone Report: Tropical Storm Sonia (EP182025) (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved December 5, 2025.