September
- September 2
-
- 5:00 p.m. PDT (00:00 UTC September 3) – The remnants of Irwin dissipate.
- September 11
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- 5:00 p.m. PDT (00:00 UTC September 12) – Tropical Depression Ten-E forms 630 mi (1,015 km) south-southwest of the southern tip of Baja California Sur.
- September 14
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- 11:00 a.m. PDT (12:00 UTC) – Tropical Depression Eleven-E forms 900 mi (1,450 km) southwest of Cabo San Lucas, Mexico.
- 5:00 p.m. PDT (00:00 UTC September 15) – Tropical Depression Ten-E strengthens into Tropical Storm Jova.
- 11:00 p.m. PDT (06:00 UTC September 15) – Tropical Depression Eleven-E strengthens into Tropical Storm Kenneth.
- September 15
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- 5:00 p.m. PDT (00:00 UTC September 16) – Tropical Storm Kenneth strengthens into Hurricane Kenneth.
- 11:00 p.m. PDT (06:00 UTC September 16) – Tropical Storm Jova strengthens into Hurricane Jova.
- September 16
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- 5:00 p.m. PDT (00:00 UTC September 17) – Hurricane Kenneth reaches category two intensity.
- 11:00 p.m. PDT (06:00 UTC September 17) – Hurricane Jova reaches category two intensity.
- 11:00 p.m PDT (06:00 UTC September 17) – Hurricane Kenneth reaches category three intensity, becoming the first major hurricane of the season.
- September 17
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- 5:00 a.m. PDT (12:00 UTC) – Tropical Depression Twelve-E forms 760 mi (1,225 km) southwest of the southern tip of Baja California Sur.
- 11:00 p.m. PDT (18:00 UTC) – Tropical Depression Twelve-E strengthens into Tropical Storm Lida.
- September 18
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- approximately 2:00 a.m. HST (12:00 UTC) – Hurricane Jova, while a category two storm, crosses the 140°W boundary and moves into the Central Pacific Hurricane Center's area of responsibility.
- 5:00 a.m. PDT (12:00 UTC) – Hurricane Kenneth reaches category four intensity.
- 5:00 a.m. PDT (12:00 UTC) – Tropical Depression Thirteen-E forms 575 mi (925 km) south-southwest of Cabo San Lucas, Mexico.
- 11:00 a.m. PDT (18:00 UTC) – Tropical Storm Lida weakens to a tropical depression.
- 11:00 a.m. PDT (18:00 UTC) – Tropical Depression Thirteen-E strengthens into Tropical Storm Max.
- 11:00 p.m. PDT (06:00 UTC September 19) – Hurricane Kenneth weakens to a category three hurricane.
- 11:00 p.m. PDT (06:00 UTC September 19) – Tropical Storm Lidia is absorbed by Tropical Storm Max.
- September 19
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- 2:00 a.m. HST (12:00 UTC) – Hurricane Jova reaches category three intensity.
- 11:00 a.m. PDT (18:00 UTC) – Hurricane Kenneth weakens to category two intensity.
- 5:00 p.m. PDT (00:00 UTC September 20) – Hurricane Kenneth weakens to category one intensity.
- 5:00 p.m. PDT (00:00 UTC September 20) – Tropical Storm Max strengthens into Hurricane Max.
- September 20
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- 11:00 a.m. PDT (18:00 UTC) – Hurricane Kenneth weakens to a tropical storm.
- 11:00 p.m. PDT (06:00 UTC September 21) – Hurricane Max weakens to a tropical storm.
- September 21
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- 2:00 p.m. HST (00:00 UTC September 22) – Hurricane Jova weakens to a category two hurricane.
- September 22
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- 2:00 a.m. HST (12:00 UTC) – Hurricane Jova weakens to a category one hurricane.
- 5:00 a.m. PDT (12:00 UTC) – Tropical Storm Max weakens to a tropical depression.
- 11:00 a.m. PDT (18:00 UTC) – Tropical Depression Max degenerates into a remnant low-pressure area.
- 2:00 p.m. HST (00:00 UTC September 23) – Hurricane Jova weakens to a tropical storm.
- 5:00 p.m. PDT (00:00 UTC September 23) – Tropical Depression Fourteen-E forms 590 mi (950 km) southwest of Acapulco, Mexico.
- September 23
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- 5:00 a.m. PDT (12:00 UTC) – Tropical Depression Fourteen-E strengthens into Tropical Storm Norma.
- 2:00 p.m. HST (00:00 UTC September 24) – Tropical Storm Jova weakens to a tropical depression.
- September 24
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- 5:00 p.m. PDT (00:00 UTC September 25) – Tropical Storm Kenneth re-strengthens into a hurricane.
- 8:00 p.m. HST (06:00 UTC September 25) – Tropical Depression Jova dissipates.
- approximately 8:00 p.m. HST (06:00 UTC September 25) – Hurricane Kenneth, while a category one storm, crosses the 140°W boundary and moves into the Central Pacific Hurricane Center's area of responsibility.
- September 25
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- 2:00 a.m. HST (12:00 UTC) – Hurricane Kenneth weakens to a tropical storm.
- 11:00 p.m. PDT (06:00 UTC September 26) – The remnants of Max dissipate.
- September 26
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- 11:00 a.m. PDT (18:00 UTC) – Tropical Storm Norma weakens to a tropical depression.
- September 27
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- 11:00 a.m. PDT (18:00 UTC) – Tropical Depression Norma degenerates into a remnant low-pressure area.
- 5:00 p.m. PDT (00:00 UTC September 28) – Tropical Depression Fifteen-E forms 140 mi (225 km) south of Manzanillo, Mexico.
- September 28
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- 11:00 p.m. PDT (06:00 UTC September 29) – Tropical Depression Fifteen-E strengthens to Tropical Storm Otis.
- September 29
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- 2:00 a.m HST (12:00 UTC) – Tropical Storm Kenneth weakens to a tropical depression.
- 11:00 p.m. PDT (06:00 UTC September 30) – Tropical Storm Otis strengthens into Hurricane Otis.
- September 30
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- 8:00 a.m. HST (18:00 UTC) – Tropical Depression Kenneth dissipates.
- 11:00 p.m. PDT (06:00 UTC October 1) – The remnants of Norma dissipate.
- 11:00 p.m. PDT (06:00 UTC October 1) – Hurricane Otis reaches category two intensity.
Read more about this topic: Timeline Of The 2005 Pacific Hurricane Season, Timeline of Storms
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