page_title: Timeline of the 2010 Pacific hurricane season
section_title: June
hierarchical_section_title: Timeline of the 2010 Pacific hurricane season / Timeline of events / June
caption_attribution_description: English: Tropical storms Blas and Celia in the Eastern Pacific Ocean on June 19, 2010.
context_page_description: The 2010 Pacific hurricane season was one of the least active seasons on record, featuring the fewest named storms since 1977. The season officially started on May 15 in the eastern Pacific—east of 140°W—and on June 1 in the central Pacific—between the International Date Line and 140°W—and lasted until November 30. These dates typically cover the period of each year when most tropical cyclones form in the eastern Pacific basin. The season's first storm, Tropical Storm Agatha, developed on May 29; the season's final storm, Tropical Storm Omeka, degenerated on December 21.
  The season began with record-breaking activity with four named storms, including two major hurricanes, developing by the end of June. Accumulated cyclone energy values exceeded 300 percent of the average for the month of June. Activity abruptly diminished thereafter, with July, August, and September seeing record low storm development. The Eastern Pacific season proper ended with Tropical Storm Georgette's dissipation on September 23, a month before the climatological mean. The year's final cyclone, Omeka, developed in the off-season on December 18, marking a record-late formation date in the satellite-era.
context_section_description: June 1
  The 2010 Central Pacific hurricane season officially begins.
  June 16
  06:00 UTC (1:00 a.m. CDT) – Tropical Depression Two-E develops out of a tropical wave roughly 110 mi (175 km) south of Salina Cruz, Mexico.
  18:00 UTC (1:00 p.m. CDT) – Tropical Depression Two-E attains its peak intensity with winds of 35 mph (55 km/h) and a pressure of 1007 mbar (hPa; 29.74 inHg).
  June 17
  06:00 UTC (1:00 a.m. CDT) – Tropical Depression Two-E rapidly dissipates off the coast of Mexico.
  06:00 UTC (1:00 a.m. CDT) – Tropical Depression Three-E develops out of an area of low pressure roughly 305 mi (490 km) south-southwest of Manzanillo, Mexico.
  12:00 UTC (7:00 a.m. CDT) – Observations from the ship Maersk Dhahran indicate that Three-E intensified into a tropical storm; the system was accordingly assigned the name Blas.
  June 18
  18:00 UTC (1:00 p.m. CDT) – Tropical Depression Four-E develops out of large, well-defined low pressure area located about 370 mi (595 km) southeast of Acapulco, Mexico.
  June 19
  12:00 UTC (6:00 a.m. MDT) – Tropical Storm Blas reaches its peak intensity with winds of 65 mph (100 km/h) and a pressure of 994 mbar (hPa; 29.36 inHg) while located about 445 mi (715 km) south of the southern tip of Baja California Sur.
  12:00 UTC (7:00 a.m. CDT) – Tropical Depression Four-E intensifies into Tropical Storm Celia while situated roughly 335 mi (540 km) south-southeast of Acapulco, Mexico.
  June 20
  18:00 UTC (1:00 p.m. CDT) – Tropical Storm Celia intensifies into a Category 1 hurricane on the Saffir–Simpson hurricane wind scale while located 360 mi (580 km) south of Acapulco, Mexico.
  June 21
  00:00 UTC (5:00 p.m. PDT, June 20) – Tropical Storm Blas weakens to a tropical depression about 560 mi (900 km) southwest of the southern tip of Baja California Sur.
  18:00 UTC (11:00 a.m. PDT) – Tropical Depression Blas degenerates into a non-convective remnant low roughly 710 mi (1,145 km) southwest of the southern tip of Baja California Sur.
  June 22
  06:00 UTC (1:00 a.m. CDT) – Hurricane Celia reaches Category 2 status and its initial peak intensity with winds of 100 mph (160 km/h) and a pressure of 973 mbar (hPa; 28.74 inHg).
  June 23
  00:00 UTC (6:00 p.m. MDT, June 22) – Hurricane Celia weakens to Category 1 strength approximately 535 mi (860 km) south-southwest of Manzanillo, Mexico.
  00:00 UTC (7:00 p.m. CDT, June 22) – Tropical Depression Five-E develops from an area of showers and thunderstorms about 380 mi (610 km) south-southeast of Salina Cruz, Mexico.
  06:00 UTC (1:00 a.m. CDT) – Tropical Depression Five-E strengthens into Tropical Storm Darby about 350 mi (565 km) south-southeast of Salina Cruz, Mexico.
  12:00 UTC (6:00 a.m. MDT) – Hurricane Celia regains Category 2 intensity while located 565 mi (910 km) southwest of Manzanillo, Mexico.
  June 24
  06:00 UTC (1:00 a.m. CDT) – Tropical Storm Darby rapidly strengthens into a Category 1 hurricane approximately 295 mi (475 km) south-southwest of Salina Cruz, Mexico.
  12:00 UTC (6:00 a.m. MDT) – Hurricane Celia intensifies into Category 3 hurricane about 470 mi (755 km) south-southwest of Socorro Island.
  18:00 UTC (12:00 p.m. MDT) – Hurricane Celia rapid intensifies into a Category 4 hurricane about 485 mi (780 km) south-southwest of Socorro Island.
  June 25
  00:00 UTC (5:00 p.m. PDT, June 24) – Hurricane Celia reaches its peak intensity as a Category 5 hurricane with winds of 160 mph (260 km/h) and a pressure of 921 mbar (hPa; 27.20 inHg). At this time, the storm was situated roughly 500 mi (805 km) southwest of Socorro Island. Celia was only the second storm on record to reach this strength during June, alongside Hurricane Ava in 1973.
  06:00 UTC (1:00 a.m. CDT) – Hurricane Darby intensifies into a Category 2 hurricane about 255 mi (410 km) south of Acapulco, Mexico.
  12:00 UTC (5:00 a.m. PDT) – Stable environmental conditions and cooler waters result in Hurricane Celia weakening to a Category 4 system approximately 565 mi (910 km) southwest of Socorro Island.
  12:00 UTC (7:00 a.m. CDT) – Hurricane Darby undoes a second phase of rapid deepening and reaches Category 3 intensity about 250 mi (
caption: Tropical Storms Blas (left) and Celia (right) on June 19
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