The 2005 Pacific hurricane season was the annual cycle of tropical cyclone formation over the Pacific Ocean north of the equator and east of the International Date Line (IDL). The season officially began on May 15 in the Eastern Pacific basin proper (east of 140°W) and June 1 in the Central Pacific basin (140°W to the IDL), and ended on November 30 in both areas. This is historically the period during which most tropical cyclogenesis occurs in these respective areas. The season's first system, Hurricane Adrian, developed on May 17; its last, Tropical Depression , dissipated on October 20.
Activity during the 2005 season was near, to slightly below, average. A total of fifteen named tropical storms developed, with seven becoming hurricanes and two further strengthening into major hurricanes—Category 3 or higher on the five-level Saffir–Simpson scale. There were also two tropical depressions which did not attain tropical storm status, including the only tropical cyclone to form in the Central Pacific basin in 2005. However, two hurricanes—Jova and Kenneth—entered the Central Pacific basin from the east, with Jova reaching its peak intensity there. Adrian was the only tropical cyclone to make a direct landfall when it struck Honduras as a tropical depression in May. Tropical Storm Dora and Hurricane Otis brushed southwestern Mexico and the Baja California peninsula, respectively, while the remnants of Kenneth affected Hawaii just after the system dissipated.
This timeline documents tropical cyclone formations, strengthening, weakening, landfalls, and dissipations during the season. It includes information that was not released during the season, meaning that data from post-storm reviews by the National Hurricane Center and the Central Pacific Hurricane Center has been included.
The time stamp for each event is first stated using Coordinated Universal Time (UTC), the 24-hour clock where 00:00 = midnight UTC. The NHC uses both UTC and the time zone where the center of the tropical cyclone was then located. Prior to 2015, two time zones were utilized in the Eastern Pacific basin: Pacific for the Eastern Pacific, and Hawaii−Aleutian for the Central Pacific. In this timeline, the respective area time is included in parentheses. Additionally, figures for maximum sustained winds and position estimates are rounded to the nearest 5 units (miles, or kilometers), following NHC 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 of events
May May 15 The 2005 Eastern Pacific hurricane season officially begins.
May 17 18:00 UTC (11:00 a.m. PDT) at Tropical Depression forms from a low-pressure area about west-southwest of El Salvador International Airport.
May 18 00:00 UTC (5:00 p.m. PDT, May 17) at Tropical Depression strengthens into Tropical Storm Adrian about west-southwest of El Salvador International Airport.
May 19
17:00 UTC (10:00 a.m. PDT) at Tropical Storm Adrian strengthens into a Category 1 hurricane on the Saffir–Simpson scale about west-southwest of El Salvador International Airport. It simultaneously attains its peak intensity, with maximum sustained winds of and a minimum central pressure of .The figures for maximum sustained winds and position estimates are rounded to the nearest 5 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.
May 20 00:00 UTC (5:00 p.m. PDT, May 19) at Hurricane Adrian weakens into a tropical storm about southwest of El Salvador International Airport. 18:00 UTC (11:00 a.m. PDT) at Tropical Storm Adrian weakens into a tropical depression about east-southeast of El Salvador International Airport. 21:00 UTC (2:00 p.m. PDT) at Tropical Depression Adrian makes landfall along the coast of the Gulf of Fonseca, or the Pacific coast of Honduras, with maximum sustained winds of and a central pressure of .
May 21 00:00 UTC (5:00 p.m. PDT, May 20) at Tropical Depression Adrian is last noted as a tropical cyclone just inland from the Gulf of Fonseca, dissipating shortly thereafter.
June June 1 The 2005 Central Pacific hurricane season officially begins.
June 21 18:00 UTC (11:00 a.m. PDT) at Tropical Depression forms from an interaction between a tropical wave and a broad low-pressure area about south of Zihuatanejo, Guerrero.
June 22
12:00 UTC (5:00 a.m. PDT) at Tropical Depression strengthens into Tropical Storm Beatriz about south of Manzanillo, Colima.
June 23 00:00 UTC (5:00 p.m. PDT, June 22) at Tropical Storm Beatriz attains its peak intensity, with maximum sustained winds of and a minimum central pressure of , about southwest of Manzanillo.
June 24 00:00 UTC (5:00 p.m. PDT, June 23) at Tropical Storm Beatriz weakens into a tropical depression about south of Cabo San Lucas, Baja California Sur. 06:00 UTC (11:00 p.m. PDT, June 23) at Tropical Depression Beatriz degenerates into a remnant low about south-southwest of Cabo San Lucas, and later dissipates.
June 26
06:00 UTC (11:00 p.m. PDT, June 25) at Tropical Depression forms from a tropical wave about south-southeast of Acapulco, Guerrero. 18:00 UTC (11:00 a.m. PDT) at Tropical Depression strengthens into Tropical Storm Calvin about south-southeast of Acapulco.
June 27 12:00 UTC (5:00 a.m. PDT) at Tropical Storm Calvin attains its peak intensity, with maximum sustained winds of and a minimum central pressure of , about south of Acapulco.
June 28 12:00 UTC (5:00 a.m. PDT) at Tropical Storm Calvin weakens into a tropical depression about west-southwest of Acapulco.
June 29 06:00 UTC (11:00 p.m. PDT, June 28) at Tropical Depression Calvin degenerates into a remant low about west-southwest of Acapulco, and later dissipates about west-southwest of Cabo San Lucas.
July July 4
00:00 UTC (5:00 p.m. PDT, July 3) at Tropical Depression forms from a tropical wave about south-southeast of Acapulco. 06:00 UTC (11:00 p.m. PDT, July 3) at Tropical Depression strengthens into Tropical Storm Dora about south-southeast of Acapulco. 12:00 UTC (5:00 a.m. PDT) at Tropical Storm Dora attains its peak intensity, with maximum sustained winds of and a minimum pressure of , about south-southeast of Acapulco.
July 5 18:00 UTC (11:00 a.m. PDT) at Tropical Storm Dora weakens into a tropical depression about southwest of Manzanillo.
July 6 12:00 UTC (5:00 a.m. PDT) at Tropical Depression Dora degenerates into a remnant low about west of Manzanillo, and later dissipates.
July 18 06:00 UTC (11:00 p.m. PDT, July 17) at A tropical depression forms from a tropical wave about south of Manzanillo. 12:00 UTC (5:00 a.m. PDT) at The recently formed tropical depression strengthens into Tropical Storm Eugene about south of Manzanillo.
July 19
18:00 UTC (11:00 a.m. PDT) at Tropical Storm Eugene attains its peak intensity, with maximum sustained winds of and a minimum central pressure of , about south-southeast of Cabo San Lucas.
July 20 12:00 UTC (5:00 a.m. PDT) at Tropical Storm Eugene weakens into a tropical depression about south-southwest of Cabo San Lucas.
July 21 00:00 UTC (5:00 p.m. PDT, July 20) at Tropical Depression Eugene degenerates into a remnant low about west of Cabo San Lucas, and later dissipates.
August August 3 18:00 UTC (8:00 a.m. HST) at Tropical Depression forms from an area of unsettled weather about east-southeast of Hilo, Hawaii. It is already at its peak intensity, with maximum sustained winds of and a minimum central pressure of .
August 5 00:00 UTC (2:00 p.m. HST, August 4) at Tropical Depression is last noted as a tropical cyclone about east-southeast of Hilo, dissipating shortly thereafter.
August 9
12:00 UTC (5:00 a.m. PDT) at Tropical Depression forms from a tropical wave about south-southwest of Cabo San Lucas.
August 10 00:00 UTC (5:00 p.m. PDT, August 9) at Tropical Depression strengthens into Tropical Storm Fernanda about southwest of Cabo San Lucas.
August 11 06:00 UTC (11:00 p.m. PDT, August 10) at Tropical Storm Fernanda strengthens into a Category 1 hurricane about southwest of Cabo San Lucas. 06:00 UTC (11:00 p.m. PDT, August 10) at Tropical Depression forms from a tropical wave about south of Cabo San Lucas. 12:00 UTC (5:00 a.m. PDT) at Tropical Depression strengthens into Tropical Storm Greg about south of Cabo San Lucas.
August 12 00:00 UTC (5:00 p.m. PDT, August 11) at Tropical Storm Greg attains its peak intensity, with maximum sustained winds of and a minimum central pressure of , about south of Cabo San Lucas. 12:00 UTC (5:00 a.m. PDT) at Hurricane Fernanda attains its peak intensity, with maximum sustained winds of and a minimum central pressure of , about west-southwest of Cabo San Lucas.
August 14
06:00 UTC (11:00 p.m. PDT, August 13) at Hurricane Fernanda weakens into a tropical storm about west-southwest of Cabo San Lucas. 18:00 UTC (11:00 a.m. PDT) at Tropical Storm Greg weakens into a tropical depression about southwest of Cabo San Lucas.
August 15 18:00 UTC (11:00 a.m. PDT) at Tropical Storm Fernanda weakens into a tropical depression about west-southwest of Cabo San Lucas.
August 16 00:00 UTC (5:00 p.m. PDT, August 15) at Tropical Depression Greg degenerates into a remnant low about southwest of Cabo San Lucas, and later dissipates. 06:00 UTC (11:00 p.m. PDT, August 15) at Tropical Depression Fernanda degenerates into a remnant low about west-southwest of Cabo San Lucas, and later dissipates.
August 19 18:00 UTC (11:00 a.m. PDT) at Tropical Depression forms from a tropical wave about south of Puerto Ángel, Oaxaca.
August 20 06:00 UTC (11:00 p.m. PDT, August 19) at Tropical Depression strengthens into Tropical Storm Hilary about south of Acapulco.
August 21 00:00 UTC (5:00 p.m. PDT, August 20) at Tropical Storm Hilary strengthens into a Category 1 hurricane about south of Manzanillo.
August 22
00:00 UTC (5:00 p.m. PDT, August 21) at Hurricane Hilary strengthens to Category 2 intensity about west-southwest of Manzanillo. 06:00 UTC (11:00 p.m. PDT, August 21) at Hurricane Hilary attains its peak intensity, with maximum sustained winds of and a minimum central pressure of , about south of Cabo San Lucas.
August 23 00:00 UTC (5:00 p.m. PDT, August 22) at Hurricane Hilary weakens to Category 1 intensity about southwest of Cabo San Lucas.
August 24 18:00 UTC (11:00 a.m. PDT) at Hurricane Hilary weakens into a tropical storm about west of Cabo San Lucas.
August 25 12:00 UTC (5:00 a.m. PDT) at Tropical Depression forms from a tropical wave about south of Manzanillo. 18:00 UTC (11:00 a.m. PDT) at Tropical Storm Hilary weakens into a tropical depression about west of Cabo San Lucas.
August 26 00:00 UTC (5:00 p.m. PDT, August 25) at Tropical Depression Hilary degenerates into a remnant low about west of Cabo San Lucas, and later dissipates. 00:00 UTC (5:00 p.m. PDT, August 25) at Tropical Depression strengthens into Tropical Storm Irwin about southwest of Manzanillo. 12:00 UTC (5:00 a.m. PDT) at Tropical Storm Irwin attains its peak intensity, with maximum sustained winds of and a minimum central pressure of , about west-southwest of Manzanillo.
August 28
00:00 UTC (5:00 p.m. PDT, August 27) at Tropical Storm Irwin weakens into a tropical depression about southwest of Cabo San Lucas. 18:00 UTC (11:00 a.m. PDT) at Tropical Depression Irwin degenerates into a remnant low about southwest of Cabo San Lucas, and later dissipates.
September September 12 00:00 UTC (5:00 p.m. PDT, September 11) at Tropical Depression forms from a tropical wave about south-southwest of Cabo San Lucas.
September 14
18:00 UTC (11:00 a.m. PDT) at Tropical Depression forms from a tropical wave about southwest of Cabo San Lucas.
September 15 00:00 UTC (5:00 p.m. PDT, September 14) at Tropical Depression strengthens into Tropical Storm Jova about west-southwest of Cabo San Lucas.