The season officially started on May 15, 2007, in the eastern Pacific, designated as the area east of 140°W, and on June 1, 2007, in the central Pacific, which is between the International Date Line and 140°W, and lasted until November 30, 2007. These dates conventionally delimit the period of each year when most tropical cyclones form in the Pacific basin. The season began slowly; through the end of July, the seasonal Accumulated Cyclone Energy (ACE) was the third lowest since the geostationary satellite era began in the 1966 Pacific hurricane season.[1] The inactivity continued through the next month, which was the third quietest August in terms of ACE since reliable records began in the basin during the 1971 Pacific hurricane season.[2] In June, Tropical Storm Barbara caused $55 million (2007 USD) in crop damage to southeastern Mexico from heavy precipitation.[3] In August, Hurricane Flossie formed in the eastern Pacific and crossed into the central Pacific; the hurricane threatened Hawaii but caused little damage. In early September, Hurricane Henriette dropped heavy rainfall in southwest Mexico, which caused nine fatalities and $25 million (2007 USD) in damage.[4]
Timeline of storms
May
May 15
The Eastern Pacific hurricane season officially begins.[5]
May 26
5:00 p.m. PDT (00:00 UTC May 27) – Tropical Depression One-E forms 345 mi (555 km) south of the tip of Baja California.[6]
May 28
5:00 p.m. PDT (00:00 UTC May 29) – Tropical Depression One-E strengthens into Tropical Storm Alvin.[6]
May 29
11:00 a.m. PDT (18:00 UTC) – Tropical Depression Two-E forms 115 mi (185 km) south-southeast of Puerto Escondido, Oaxaca, Mexico.[7]
11:00 p.m. PDT (06:00 UTC May 30) – Tropical Storm Alvin weakens to a tropical depression.[6]
5:00 p.m. PDT (00:00 UTC July 17) – Hurricane Cosme is downgraded to a tropical storm.[11]
July 18
c. 11:00 a.m. PDT (8:00 a.m. HST, 18:00 UTC) – Tropical Storm Cosme is downgraded to a tropical depression as it crosses the 140°W boundary and moves into the Central Pacific Hurricane Center's area of responsibility.[11]
July 21
5:00 p.m. PDT (00:00 UTC July 22) – Tropical Depression Seven-E forms south of Manzanillo.[12]
July 22
8:00 a.m. HST (18:00 UTC) – The final advisory is issued on dissipating Tropical Depression Cosme.[11]
July 23
5:00 p.m. PDT (00:00 UTC July 24) – Tropical Depression Seven-E strengthens into Tropical Storm Dalila.[12]
July 26
11:00 p.m. PDT (06:00 UTC July 27) – Tropical Storm Dalila is downgraded to a tropical depression.[12]
July 27
11:00 a.m. PDT (18:00 UTC) – Tropical Depression Dalila weakens into a low.[12]
July 31
5:00 a.m. PDT (12:00 UTC) – Tropical Depression Eight-E forms 1,070 mi (1,715 km) southwest of the southern tip of Baja California.[13]
5:00 p.m. PDT (01:00 UTC August 1) – Tropical Depression Eight-E strengthens into Tropical Storm Erick.[13]
August
August 1
5:00 p.m. PDT (00:00 UTC August 2) – Tropical Storm Erick weakens into a tropical depression.[13]
11:00 p.m. PDT (06:00 UTC August 2) – Tropical Depression Erick degenerates into a tropical wave.[13]
August 8
11:00 a.m. PDT (18:00 UTC) – Tropical Depression Nine-E forms well to the southwest of Baja California.[14]
5:00 p.m. PDT (00:00 UTC August 9) – Tropical Depression Nine-E is upgraded to Tropical Storm Flossie.[14]
Hurricane Flossie approaching Hawaii
August 10
5:00 a.m. PDT (12:00 UTC) – Tropical Storm Flossie is upgraded to Hurricane Flossie.[14]
11:00 p.m. PDT (06:00 UTC August 11) – Hurricane Flossie is upgraded to a Category 3 major hurricane, becoming the first major hurricane of the season.[14]
August 11
5:00 a.m. PDT (12:00 UTC, 2 a.m. HST) – Hurricane Flossie is upgraded to a Category 4 hurricane, and crosses 140°W into the Central Pacific Hurricane Center's area of responsibility.[14]
August 15
2:00 a.m. HST (12:00 UTC) – Hurricane Flossie is downgraded to a tropical storm.[14]
8:00 p.m. HST (06:00 UTC August 16) – Tropical Storm Flossie is downgraded to a tropical depression.[14]
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