page_title: Timeline of the 1997 Pacific hurricane season
section_title: August
hierarchical_section_title: Timeline of the 1997 Pacific hurricane season / August
caption_attribution_description: Saffir-Simpson Hurricane ScaleTDTS12345 English: Hurricane Guillermo (1997) track. Uses the color scheme from the Saffir-Simpson Hurricane Scale.
context_page_description: The 1997 Pacific hurricane season was the most active season since the 1994 season, producing 24 tropical depressions, 19 of which became tropical storms or hurricanes. The season officially started on May 15, 1997 in the Eastern Pacific—designated as the area east of 140°W—and on June 1, 1997 in the Central Pacific, which is between the International Date Line and 140°W. The season officially ended in both basins on November 30, 1997. These dates typically limit the period of each year when most tropical cyclones form in the eastern Pacific basin. This timeline documents all the storm formations, strengthening, weakening, landfalls, extratropical transitions, as well as dissipation. 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, has been included.
  The first storm formed on June 1 and the final storm crossed into the western Pacific on December 6, thus ending the season. There were 24 cyclones in both the eastern and central Pacific, including 5 unnamed tropical depressions.
context_section_description: August 1
  1800 UTC – Tropical Storm Guillermo strengthens into the fourth hurricane of the season.
  August 2
  1200 UTC – Hurricane Guillermo strengthens into a Category 2 hurricane.
  1800 UTC – Hurricane Guillermo strengthens into the third major hurricane of the season.
  August 3
  0000 UTC – Hurricane Guillermo strengthens into a Category 4 hurricane.
  August 4
  1800 UTC – Hurricane Guillermo strengthens into the first Category 5 hurricane of the season.
  August 5
  1800 UTC – Hurricane Guillermo weakens into a Category 4 hurricane.
  August 6
  1800 UTC – Hurricane Guillermo weakens into a Category 3 hurricane
  August 7
  0600 UTC –  Hurricane Guillermo weakens into a Category 2 hurricane.
  1200 UTC – Hurricane Guillermo weakens into a Category 1 hurricane.
  August 8
  0600 UTC – Hurricane Guillermo weakens into a tropical storm.
  August 10
  0000 UTC – Tropical Depression Ten-E forms 920 miles (1700 km) south-southwest of the southern tip of the Baja Peninsula.
  1800 UTC – Tropical Storm Guillermo weakens into a tropical depression.
  August 11
  1800 UTC – Tropical Depression Guillermo re-strengthens into a tropical storm.
  1800 UTC – Tropical Depression Ten-E strengthens into Tropical Storm Hilda.
  August 14
  0600 UTC – Tropical Storm Hilda weakens into a tropical depression.
  August 15
  0600 UTC – Tropical Depression Hilda dissipates.
  1200 UTC – Tropical Storm Guillermo again weakens into a tropical depression.
  August 16
  0000 UTC – Tropical Depression Guillermo becomes extratropical.
  August 17
  0000 UTC – Tropical Depression Eleven-E forms 450 miles (830 km) southwest of Cabo San Lucas, Mexico.
  1200  UTC – Tropical Depression Eleven-E strengthens into Tropical Storm Ignacio.
  August 18
  0600 UTC – Tropical Storm Ignacio weakens into Tropical Depression Ignacio.
  August 19
  1200 UTC – Tropical Depression Ignacio becomes extratropical.
  August 25
  1200 UTC – Tropical Depression Twelve-E forms.
  August 26
  0000 UTC – Tropical Depression Twelve-E strengthens into Tropical Storm Jimena.
  August 27
  0000 UTC – Tropical Storm Jimena strengthens into the fifth hurricane of the season.
  0600 UTC – Hurricane Jimena explosively strengthens into the fourth major hurricane of the season.
  1200 UTC – Hurricane Jimena strengthens into a Category 4 hurricane.
  August 29
  0000 UTC – Hurricane Jimena weakens into a Category 3 hurricane.
  0600 UTC – Hurricane Jimena rapidly falls apart as it weakens from a Category 3 hurricane to a tropical storm.
  1800 UTC – Tropical Storm Jimena weakens into a tropical depression.
  August 30
  0000 UTC – Tropical Depression Jimena dissipates.
caption: Track map of Hurricane Guillermo, the first Category 5 hurricane of the season
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