2010 Pacific Hurricane Season - Timeline of Events

Timeline of Events

May
May 15
  • The 2010 Pacific hurricane season officially begins.
May 29
  • 5:00 a.m. PDT (1200 UTC) – Tropical Depression One-E develops out of a broad area of low pressure roughly 295 mi (475 km) west of San Salvador, El Salvador.
  • 11:00 p.m. PDT (0600 UTC) – Tropical Depression One-E intensifies into a tropical storm and is named Agatha while located about 170 mi (275 km) south of Puerto San José, Guatemala.
  • 11:00 p.m. PDT (0600 UTC) – Tropical Storm Agatha reaches its peak intensity with winds of 45 mph (75 km/h) and a barometric pressure of 1001 mbar (hPa; 29.56 inHg).
  • 3:30 p.m. PDT (2230 UTC) – Tropical Storm Agatha makes landfall near the Mexico-Guatemala border with winds of 45 mph (75 km/h).
  • 8:00 p.m. PDT (0300 UTC on May 30) – Tropical Storm Agatha weakens to a tropical depression as it moves over the high terrain of Guatemala.
May 30
  • 5:00 a.m. PDT (1200 UTC) – Tropical Depression Agatha dissipates over the mountains of western Guatemala.
June
June 1
  • The 2010 Central Pacific hurricane season officially begins.
June 15
  • 11:00 p.m. PDT (0600 UTC on June 16) – Tropical Depression Two-E develops out of a tropical wave roughly 110 mi (175 km) south of Salina Cruz, Mexico.
June 16
  • 11:00 a.m. PDT (1800 UTC) – 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).
  • 11:00 p.m. PDT (0600 UTC June 17) – Tropical Depression Two-E rapidly dissipates off the coast of Mexico.
  • 11:00 p.m. PDT (0600 UTC June 17) – Tropical Depression Three-E develops out of an area of low pressure situated roughly 265 mi (425 km) south-southwest of Manzanillo, Colima.
June 17
  • 5:00 a.m. PDT (1200 UTC) – Tropical Depression Three-E intensified into Tropical Storm Blas.
June 19
  • 5:30 a.m. PDT (1230 UTC) – Tropical Depression Four-E develops out of large, well-defined low pressure area located about 345 mi (550 km) southeast of Acapulco, Mexico.
  • 5:00 a.m. PDT (1200 UTC) – Tropical Storm Blas reaches its peak intensity with winds of 65 mph (100 km/h) and a barometric pressure of 992 mbar (hPa; 29.29 inHg) while located about 455 mi (735 km) south of the southern tip of Baja California Sur.
  • 8:00 a.m. PDT (1500 UTC) – Tropical Depression Four-E intensifies into Tropical Storm Celia while situated roughly 355 mi (575 km) south-southeast of Acapulco, Mexico.
June 20
  • 2:00 p.m. PDT (2100 UTC) – Tropical Storm Blas weakens to a tropical depression about 470 mi (755 km) southwest of the southern tip of Baja California Sur.
  • 2:00 p.m. PDT (2100 UTC) – Tropical Storm Celia intensifies into a Category 1 hurricane on the Saffir–Simpson Hurricane Scale, the first of the season, while located about 365 mi (590 km) south of Acapulco, Mexico.
June 21
  • 11:00 a.m. PDT (1800 UTC) – Tropical Depression Blas degenerated into a non-convective remnant low pressure area roughly 750 mi (1,205 km) west-southwest of the southern tip of Baja California Sur.
  • 8:00 p.m. PDT (0300 UTC on June 22) – Hurricane Celia intensifies into a Category 2 hurricane, attaining winds of 105 mph (165 km/h), while located about 505 mi (815 km) south of Manzanillo, Colima.
June 22
  • 8:00 p.m. PDT (0300 UTC on June 23) – Hurricane Celia weakens to a Category 1 hurricane about 530 mi (850 km) south-southwest of Manzanillo, Colima.
  • 8:00 p.m. PDT (0300 UTC on June 24) – Tropical Depression Five-E develops out of an area of showers and thunderstorms situated about 380 mi (610 km) south-southeast of Salina Cruz, Mexico.
June 23
  • 2:00 a.m. (0900 UTC) – Tropical Depression Five-E intensifies into Tropical Storm Darby while located roughly 335 mi (540 km) south-southeast of Salina Cruz, Mexico.
  • 8:00 a.m. PDT (1500 UTC) – Hurricane Celia re-attains Category 2 intensity roughly 740 mi (1,190 km) south of the southern tip of Baja California Sur.
  • 2:00 p.m. PDT (2100 UTC) – Hurricane Celia intensifies into a major hurricane, a storm with winds of at least 111 mph (178 km/h), while located about 735 mi (1,180 km) south of the southern tip of Baja California Sur.
  • 8:00 p.m. PDT (0300 UTC on June 24) – Hurricane Celia weakens to a Category 2 hurricane about 735 mi (1,180 km) south of the southern tip of Baja California Sur.
June 24
  • 8:00 a.m. PDT (1500 UTC) – Hurricane Celia re-strengthens into a Category 3 hurricane about 765 mi (1,230 km) south-southwest of the southern tip of Baja California Sur.
  • 8:00 a.m. PDT (1500 UTC) – Tropical Storm Darby intensifies into a hurricane while located about 235 mi (375 km) south-southwest of Puerto Escondido, Oaxaca.
  • 2:00 p.m. PDT (2100 UTC) – Hurricane Celia intensifies into a Category 4 hurricane about 765 mi (1,230 km) south-southwest of the southern tip of Baja California Sur.
  • 8:00 p.m. PDT (0300 UTC June 25) – Hurricane Celia further strengthens into a category 5 hurricane. This makes Hurricane Celia the first category 5 hurricane since Rick in 2009, and the first June category 5 since Ava in 1973.
June 25
  • 2:00 a.m. PDT (0900 UTC) – Hurricane Darby intensified into a category 2 hurricane.
  • 8:00 a.m. PDT (1500 UTC) – Hurricane Darby intensified into a category 3 hurricane.
  • 8:00 a.m. PDT (1500 UTC) – Hurricane Celia weakens into a category 4 hurricane.
  • 8:00 p.m. PDT (0300 UTC June 26) – Hurricane Celia weakens into a category 3 hurricane.
June 26
  • 2:00 a.m. PDT (0900 UTC) – Hurricane Celia weakens into a category 2 hurricane.
  • 8:00 a.m. PDT (1500 UTC) – Hurricane Celia weakens into a category 1 hurricane.
  • 8:00 p.m. PDT (0300 UTC June 27) – Hurricane Celia weakens into a tropical storm.
  • 2:00 a.m. PDT (0900 UTC) – Hurricane Darby weakens into a category 2 hurricane.
  • 2:00 p.m. PDT (2100 UTC) – Hurricane Darby weakens into a category 1 hurricane.
  • 8:00 p.m. PDT (0300 UTC June 27) – Hurricane Darby weakens into a tropical storm.
June 28
  • 8:00 a.m. PDT (1500 UTC) – Tropical Storm Darby weakens into a tropical depression.
  • 2:00 p.m. PDT (2100 UTC) – Tropical Depression Celia degenerated into a remnant low.
  • 2:00 p.m. PDT (2100 UTC) – Tropical Depression Darby degenerated into a remnant low.
July
July 14
  • 2:00 p.m. PDT (2100 UTC) – Tropical Depression Six-E formed 340 miles (550 km) southwest of Manzanillo, Mexico.
July 16
  • 2:00 a.m. PDT (0900 UTC) – Tropical Depression Six-E degenerated into a remnant low.
August
August 6
  • 0000 UTC (5:00 p.m. PDT August 4) – Tropical Depression Seven-E developed off the southern coast of Mexico.
August 6
  • 1200 UTC (8:00 a.m. PDT) – Tropical Depression Seven-E intensifies into Tropical Storm Estelle.
August 9
  • 11:00 p.m. PDT (1800 UTC) – Tropical Storm Estelle weakens into a tropical depression.
August 10
  • 11:00 a.m. PDT (1500 UTC) – Tropical Depression Estelle degenerates into an area of low pressure.
August 20
  • 0600 UTC (11:00 p.m. PDT August 19) – Tropical Depression Eight-E developed 184 mi (296 km) west-southwest of Manzanillo, Mexico.
  • 1800 UTC (11:00 a.m. PDT) – Tropical Depression Eight-E attained its peak intensity with winds of 35 mph (55 km/h) and a minimum pressure of 1003 mbar (hPa; 29.62 inHg).
August 21
  • 1800 UTC (11:00 a.m. PDT) – Tropical Depression Nine-E roughly 205 mi (330 km) southeast of Salina Cruz, Mexico.
August 22
  • 0300 UTC (8:00 p.m. PDT August 21) – Tropical Depression Eight-E has degenerated into an area of low pressure.
  • 1200 UTC (5:00 p.m. PDT) – Tropical Depression Nine-E intensifies into Tropical Storm Frank.
August 25
  • 1200 UTC (5:00 a.m. PDT) – Tropical Storm Frank strengthens into a Category 1 hurricane.
August 26
  • 1800 UTC (11:00 a.m. PDT) – Hurricane Frank attains its peak intensity with winds of 90 mph (150 km/h) and a pressure of 978 mbar (hPa; 28.88 inHg).
August 27
  • 1800 UTC (11:00 a.m. PDT) – Hurricane Frank weakens to a tropical storm.
August 28
  • 1200 UTC (5:00 a.m. PDT) – Tropical Storm Frank weakens to a tropical depression.
  • 1800 UTC (11:00 a.m. PDT) – Tropical Depression Frank degenerates into a non-convective remnant low roughly 230 mi (370 km) southwest of the southern tip of Baja California Sur.
September
September 2
  • 6:00 p.m. PDT (0000 UTC September 3) – Tropical Depression Ten-E formed 220 mi (355 km) south of Baja California. Simultaneously, Tropical Depression Ten-E attained its peak intensity with winds of 35 mph (55 km/h) and a minimum pressure of 1003 mbar (hPa; 29.62 inHg).
  • 11:00 a.m. PDT (1800 UTC) – Tropical Depression Eleven-E forms roughly 115 mi (175 km) southeast of Salina Cruz, Mexico.
  • 11:00 p.m. PDT (0600 UTC September 4) – Tropical Depression Eleven-E attains its peak intensity with winds of 35 mph (55 km/h) and a pressure of 1004 mbar (hPa; 29.64 inHg).
September 4
  • 12:00 a.m. PDT (0700 UTC) – Tropical Depression Eleven-E makes landfall in Salina Cruz, Mexico with winds of 35 mph (55 km/h).
  • 5:00 a.m. PDT (1200 UTC) – Tropical Depression Ten-E degenerated into a remnant low southwest of Baja California.
  • 11:00 a.m. PDT (1800 UTC) – Tropical Depression Eleven-E degenerates into a remnant low along the border of Oaxaca and Veracruz.
September 5
  • 11:00 a.m. PDT (1800 UTC) – The remnants of Tropical Depression Eleven-E regenerate into Atlantic Tropical Depression Ten, later Tropical Storm Hermine, over the Bay of Campeche.
September 20
  • 5:00 a.m. PDT (1200 UTC) – Tropical Depression Twelve-E developed 207 mi (333 km) south-southeast of Cabo San Luca, Mexico.
  • 11:00 a.m. PDT (1800 UTC) – Tropical Depression Twelve-E intensified into Tropical Storm Georgette.
September 21
  • 5:00 a.m. PDT (1200 UTC) – Tropical Storm Georgette attained its peak intensity with winds of 40 mph (65 km/h) and a minimum pressure of 999 mbar (hPa; 29.5 inHg).
  • 11:00 a.m. PDT (1800 UTC) – Tropical Storm Georgette made landfall on San José del Cabo, Baja California Sur, Mexico with winds of 40 mph (65 km/h).
  • 5:00 p.m. PDT (0000 UTC) – Tropical Storm Georgette weakened back to a tropical depression shortly after landfall.
September 22
  • 3:00 p.m. PDT (2200 UTC) – Tropical Depression Georgette made landfall near San Carlos, Sonora with winds of 35 mph (55 km/h).
  • 11:00 p.m. PDT (0600 UTC) – Tropical Depression Georgette dissipated over northwestern Mexico.
October
  • No tropical cyclones developed in the month of October
November
  • No tropical cyclones developed in the month of November
November 30
  • The 2010 Pacific hurricane season officially ends.
December
December 17
  • 2:00 p.m. HAST (0000 UTC December 18) – A subtropical depression forms roughly 1,330 mi (2,145 km) west-northwest of Honolulu, Hawaii.
December 18
  • 2:00 a.m. HAST (1200 UTC) – The subtropical depression strengthens into a subtropical storm.
  • 2:00 p.m. HAST (0000 UTC December 19) – The subtropical storm crosses the International Dateline and enters the Western Pacific basin.
December 19
  • 8:00 p.m. HAST (0600 UTC December 20) – The subtropical storm transitions into a tropical cyclone and re-enters the Central Pacific basin. Upon doing so, it was named Omeka by the Central Pacific Hurricane Center.
December 21
  • 2:00 p.m. HAST (0000 UTC December 22) – Tropical Storm Omeka weakens to a tropical depression.
December 22
  • 8:00 a.m. HAST (1800 UTC) – Tropical Depression Omeka dissipates roughly 1,235 mi (1,985 km) northwest of Honolulu, Hawaii.

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