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The 2013 Pacific hurricane season was an above-average year in which twenty named storms developed. The hurricane season officially began on May 15 in the East Pacific, coinciding with the formation of Tropical Storm Alvin, and on June 1 in the Central Pacific; it ended on November 30 in both basins. These dates conventionally delimit the period during each year when most tropical cyclones form. The final system of the year, Tropical Storm Sonia, dissipated on November 4.
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The season produced twenty-one tropical depressions. All but one further intensified into tropical storms and nine further intensified to become hurricanes. Despite this level of activity, only one hurricane – Raymond – strengthened into a major hurricane. The most significant storm, in terms of loss of life and damage, was Hurricane Manuel. Forming in mid-September, Manuel attained its peak as a minimal Category 1 hurricane before moving ashore the coastline of Mexico. In total, the storm contributed to 123 confirmed fatalities and $4.2 billion (2013 USD) in damage. Throughout the duration of the season, four other named storms – Hurricane Barbara and tropical storms Juliette, Octave, and Sonia – made landfall in Mexico, causing minor damage and loss of life.
This timeline includes information that was not released in real time, but derived from post-season analyses by the National Hurricane Center and Central Pacific Hurricane Center; as a result, it may include storms that were not operationally warned upon. This timeline documents tropical cyclone formations, strengthening, weakening, landfalls, extratropical transitions, and dissipations during the season.
May
May 15
May 16
May 17
May 28
May 29
May 30
June
June 1
June 23
June 24
June 25
June 26
June 27
June 29
June 30
July
July 2
July 3
July 4
July 5
July 6
July 7
July 9
July 25
July 27
July 30
July 31
August
August 2
August 3
August 4
August 6
August 7
August 8
August 9
August 11
August 16
August 18
August 19
August 20
August 22
August 23
August 24
August 25
August 28
August 29
August 30
August 31
September
September 1
September 2
September 5
September 6
September 7
September 13
September 15
September 16
September 17
September 18
September 19
September 20
October
October 6
October 7
October 9
October 10
October 12
October 13
October 14
October 15
October 16
October 20
October 21
October 22
October 23
October 27
October 28
October 29
October 30
November
November 1
November 3
November 4
November 30