Timeline of the 2004 Pacific hurricane season

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Below is a timeline of the 2004 Pacific hurricane season, documenting all the storm formations, strengthening, weakening, landfalls, extratropical transitions, as well as dissipation. The season officially began on May 15, 2004, and lasted until November 30. For convenience and clarity, in the timeline below, all landfalls are bolded. The timeline also includes information which was not operationally released, meaning that information from post-storm reviews by the National Hurricane Center, such as information on a storm that was not operationally warned on, have been included.

Contents 1 May 2 June 3 July 4 August 5 September 6 October 7 See also

[edit] May

• May 21
  • 5 p.m. PDT (0000 UTC May 22) - Tropical Depression One-E forms 575 statute miles (925 km) south-southeast of Cabo San Lucas, Mexico.
• May 22
  • 5 a.m. PDT (1200 UTC) - Tropical Depression One-E strengthens into Tropical Storm Agatha.
• May 23
  • 5 p.m. PDT (0000 UTC, May 24) - Tropical Storm Agatha weakens into a tropical depression.
• May 24
  • 5 a.m. PDT (1200 UTC) - Tropical Depression Agatha dissipates.

[edit] June

• There was no tropical cyclone activity in this basin in June. The last time this happened was in 1969.

[edit] July

• July 2
  • 9 a.m. PDT (1600 UTC) - Tropical Depression Two-E forms.
• July 3
  • 2 p.m. PDT (2100 UTC) - Tropical Depression Two-E loses tropical characteristics.
• July 5
  • 5 p.m. HST (0300 UTC July 6) - Tropical Depression One-C forms 700 miles (1,100 km) south-southeast of Johnston Island.
• July 6
  • 5 p.m. HST (0300 UTC July 7) - Tropical Depression One-C dissipates.
• July 12
  • 8 a.m. PDT (1500 UTC) - Tropical Depression Three-E forms south of Mexico.
  • 8 p.m. PDT (0300 UTC July 13) - Tropical Depression Three-E is upgraded to Tropical Storm Blas.
• July 14
  • 2 p.m. PDT (2100 UTC) - Tropical Storm Blas is downgraded to a tropical depression.
  • 8 p.m. PDT (0300 UTC July 15) - Tropical Depression Blas begins dissipating.
• July 18
  • 8 p.m. PDT (0300 UTC July 19) - Tropical Depression Four-E forms 600 miles (970 km) south-southwest of the southern tip of Baja California.
• July 19
  • 2 p.m. PDT (2100 UTC) - Tropical Depression Four-E is upgraded to Tropical Storm Celia.
• July 21
  • 8 p.m. PDT (0300 UTC July 22) - Tropical Storm Celia becomes Hurricane Celia.
• July 22
  • 11 a.m. PDT (1800 UTC) - Hurricane Celia is downgraded to a tropical storm.
• July 24
  • 2 a.m. PDT (0900 UTC) - Tropical Storm Celia is downgraded to a tropical depression.
• July 25
  • 2 p.m. PDT (2100 UTC) - Tropical Depression Celia dissipates into a remnant low.
• July 26
  • 2 p.m. PDT (2100 UTC) - Tropical Depression Five-E forms south of Cabo San Lucas.
  • 8 p.m. PDT (0300 UTC July 27) - Tropical Depression Five-E is upgraded to Tropical Storm Darby.
• July 28
  • 2 a.m. PDT (0900 UTC) - Tropical Storm Darby becomes Hurricane Darby.
  • 2 p.m. PDT (2100 UTC) - Hurricane Darby reaches Category 2 intensity.
• July 29
  • 2 a.m. PDT (0900 UTC) - Hurricane Darby reaches Category 3 intensity, the first major Pacific hurricane since 2002.
  • 2 a.m. PDT (0900 UTC) - Tropical Depression Six-E forms about 425 nautical miles (787 km) south-southwest of the southern tip of Baja California.
  • 8 p.m. PDT (0300 UTC July 30) - Advisories on Tropical Depression Six-E are discontinued.
• July 30
  • 8 a.m. PDT (1500 UTC) - Hurricane Darby is downgraded to a tropical storm.
• July 31
  • 8 a.m. PDT (1500 UTC) - Tropical Storm Darby weakens to a tropical depression.
  • 11 p.m. PDT (0900 UTC August 1) - Tropical Depression Darby dissipates.

[edit] August

• August 1
  • 8 p.m. PDT (0300 UTC August 2) - Tropical Depression Six-E regenerates about 1,215 nautical miles (2,250 km) west-southwest of Baja California.
• August 3
  • 2 p.m. PDT (2100 UTC) - Tropical Depression Six-E dissipates.
• August 19
  • 2 a.m. PDT (0900 UTC) - Tropical Depression Seven-E forms 1,395 nautical miles (2,584 km) east-southeast of Hilo, Hawaii.
• August 20
  • 2 a.m. PDT (0900 UTC) - Tropical Depression Seven-E is upgraded to Tropical Storm Estelle.
  • 8 p.m. PDT (5 p.m. HST; 0300 UTC August 21) - Tropical Storm Estelle crosses 140°W, entering the Central Pacific Hurricane Center's jurisdiction.
• August 23
  • 2 a.m. PDT (0900 UTC) - Tropical Depression Eight-E forms from the remains of Tropical Storm Earl, which crossed over from the Atlantic basin.
  • 8 a.m. PDT (1500 UTC) - Tropical Depression Eight-E strengthens into Tropical Storm Frank, one of the few times a storm has survived crossing from the Atlantic to the Pacific.
  • 2 p.m. PDT (2100 UTC) - Tropical Storm Frank is upgraded to Hurricane Frank
  • 2 p.m. PDT (2100 UTC) - Tropical Depression Nine-E forms about 845 nautical miles (1,565 km) west-southwest of the tip of Baja California.
• August 25
  • 2 a.m. PDT (0900 UTC) - Hurricane Frank is downgraded to a tropical storm.
  • 8 p.m. PDT (0300 UTC Aug. 26) - Tropical Storm Frank weakens to a tropical depression.
• August 26
  • 8 a.m. PDT (1500 UTC) - Tropical Depression Frank dissipates.
  • 8 a.m. PDT (1500 UTC) - Tropical Depression Nine-E dissipates.
  • 8 a.m. PDT (1500 UTC) - Tropical Depression Ten-E forms about 305 miles (491 km) south-southwest of Manzanillo, Colima, Mexico.
  • 2 p.m. PDT (2100 UTC) - Tropical Depression Ten-E is upgraded to Tropical Storm Georgette.
• August 30
  • 2 a.m. PDT (0900 UTC) - Tropical Storm Georgette weakens to a tropical depression.
  • 8 a.m. PDT (1500 UTC) - Tropical Depression Georgette degenerates into a remnant low.
  • 2 p.m. PDT (2100 UTC) - Tropical Depression Eleven-E forms southwest of Acapulco.
• August 31
  • 2 a.m. PDT (0900 UTC) - Tropical Depression Eleven-E is upgraded to Tropical Storm Howard.

[edit] September

• September 1
  • 2 a.m. PDT (0900 UTC) - Tropical Storm Howard is upgraded to Hurricane Howard.
• September 2
  • 2 a.m. PDT (0900 UTC) - Hurricane Howard jumps to Category 3 intensity.
  • 8 a.m. PDT (1500 UTC) - Hurricane Howard reaches Category 4 intensity.
• September 4
  • 8 a.m. PDT (1500 UTC) - Hurricane Howard weakens to a tropical storm.
• September 5
  • 2 a.m. PDT (0900 UTC) - Tropical Storm Howard weakens to a tropical depression.
  • 8 a.m. PDT (1500 UTC) - Tropical Depression Howard dissipates.
• September 8
  • 2 a.m. PDT (0900 UTC) - Tropical Depression Twelve-E forms.
  • 2 p.m. PDT (2100 UTC) - Tropical Depression Twelve-E is upgraded to Tropical Storm Isis.
• September 10
  • 2 p.m. PDT (2100 UTC) - Tropical Storm Isis weakens to a tropical depression.
  • 2 p.m. PDT (2100 UTC) - Tropical Depression Thirteen-E forms south-southeast of the Gulf of Tehuantepec.
• September 11
  • 8 a.m. PDT (1500 UTC) - Tropical Depression Thirteen-E is upgraded to Tropical Storm Javier.
  • 8 p.m. PDT (0300 UTC Sept. 12) - Tropical Depression Isis restrengthens into a tropical storm.
• September 12
  • 2 p.m. PDT (2100 UTC) - Tropical Storm Javier strengthens into Hurricane Javier.
• September 13
  • 2 a.m. PDT (0900 UTC) - Hurricane Javier reaches Category 2 strength.
  • 8 a.m. PDT (1500 UTC) - Hurricane Javier reaches Category 3 strength.
  • 2 p.m. PDT (2100 UTC) - Hurricane Javier reaches Category 4 strength.
• September 15
  • 8 a.m. PDT (1500 UTC) - Tropical Storm Isis is upgraded to Hurricane Isis.
  • 2 p.m. PDT (2100 UTC) - Hurricane Isis is downgraded to a tropical storm as the eye collapses.
• September 16
  • 2 p.m. PDT (2100 UTC) - Tropical Storm Isis weakens to a tropical depression.
• September 17
  • 2 a.m. PDT (0900 UTC) - Tropical Depression Isis loses tropical characteristics.
• September 18
  • 8 a.m. PDT (1500 UTC) - Hurricane Javier is downgraded to a tropical storm.
  • 8 p.m. PDT (0300 UTC Sept. 19) - Tropical Storm Javier weakens to a tropical depression.
• September 19
  • Exact time unknown - Tropical Depression Javier makes landfall near San Ignacio in Baja California Sur.
  • 8 a.m. PDT (1500 UTC) - Tropical Depression Javier dissipates inland.

[edit] October

• October 4
  • 2 p.m. PDT (2100 UTC) - Tropical Depression Fourteen-E forms south of Cabo San Lucas.
• October 5
  • 8 a.m. PDT (1500 UTC) - Tropical Depression Fourteen-E becomes Tropical Storm Kay.
  • 2 p.m. PDT (2100 UTC) - Tropical Storm Kay and weakens into a tropical depression.
• October 6
  • 8 a.m. PDT (2100 UTC) - Tropical Depression Kay begins dissipating into a remnant low.
• October 11
  • 2 p.m. PDT (2100 UTC) - Tropical Depression Fifteen-E forms 90 miles (140 km) south-southwest of Puerto Angel, Mexico.
• October 12
  • 2 p.m. PDT (2100 UTC) - Tropical Depression Fifteen-E strengthens into Tropical Storm Lester.
• October 13
  • 2 p.m. PDT (2100 UTC) - Tropical Storm Lester is downgraded to a tropical depression and rapidly dissipates.
• October 25
  • 3 p.m. PDT (2200 UTC) - Tropical Depression Sixteen-E forms 100 miles (160 km) south-southwest of Altata, Mexico.
• October 26
  • 2 a.m. PDT (0900 UTC) - Tropical Depression Sixteen-E dissipates 35 miles (56 km) west of Altata, Mexico.

[edit] See also

• 2004 Pacific hurricane season
• List of Pacific hurricane seasons
• Timeline of the 2004 Atlantic hurricane season
• Timeline of the 2004 Pacific typhoon season

Preceded by None

Pacific hurricane seasons timelines 2004

Succeeded by 2005