The 2007 Pacific hurricane season was an event in the annual cycle of

tropical cyclone A tropical cyclone is a rapidly rotating storm system characterized by a low-pressure center, a closed low-level atmospheric circulation, strong winds, and a spiral arrangement of thunderstorms that produce heavy rain and squalls. Depend ...

formation. This timeline documents all the storm formations, strengthening, weakening, landfalls, extratropical transitions, and dissipation. The timeline also includes information which was not operationally released, which is information from post-storm analysis by the

National Hurricane Center The National Hurricane Center (NHC) is the division of the United States' NOAA/National Weather Service responsible for tracking and predicting tropical weather systems between the Prime Meridian and the 140th meridian west poleward to the 3 ...

. 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 The International Date Line (IDL) is an internationally accepted demarcation on the surface of Earth, running between the South and North Poles and serving as the boundary between one calendar day and the next. It passes through the Pacific O ...

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 Accumulated cyclone energy (ACE) is a metric used by various agencies to express the energy released by a tropical cyclone during its lifetime. It is calculating by summing the square of a tropical cyclone's maximum sustained winds, measured ever ...

(ACE) was the third lowest since the geostationary satellite era began in the

1966 Pacific hurricane season The 1966 Pacific hurricane season started on May 15, 1966, and ended November 30, 1966. The season was of little note. Hurricane Blanca traveled 4,300 miles, setting a new record. During September and October of the year, Hurricane Helga and Tropi ...

. 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 The 1971 Pacific hurricane season began on May 15, 1971, in the east Pacific, and on June 1, 1971, in the central Pacific. It ended on November 30, 1971. These dates conventionally delimit the period of time when tropical cyclones form in the east ...

. In June,

Tropical Storm Barbara The name Barbara has been used for thirteen tropical cyclones worldwide: two in the Atlantic Ocean, seven in the Eastern Pacific Ocean, one in the South Pacific Ocean, one in the Western Pacific Ocean, and two in the South-West Indian Ocean. It has ...

caused $55 million (2007 USD) in crop damage to southeastern Mexico from heavy precipitation. In August, Hurricane Flossie formed in the eastern Pacific and crossed into the central Pacific; the hurricane threatened

Hawaii Hawaii ( ; haw, Hawaii or ) is a state in the Western United States, located in the Pacific Ocean about from the U.S. mainland. It is the only U.S. state outside North America, the only state that is an archipelago, and the only stat ...

but caused little damage. In early September,

Hurricane Henriette The name Henriette has been used for seven tropical cyclones in the Eastern Pacific Ocean. * Hurricane Henriette (1983) – Strong Category 4 hurricane that remained offshore Mexico * Tropical Storm Henriette (1989) – Weak tropical storm th ...

dropped heavy rainfall in southwest Mexico, which caused nine fatalities and $25 million (2007 USD) in damage.

Timeline of storms

ImageSize = width:770 height:215 PlotArea = top:10 bottom:80 right:20 left:20 Legend = columns:3 left:30 top:58 columnwidth:270 AlignBars = early DateFormat = dd/mm/yyyy Period = from:01/05/2007 till:30/11/2007 TimeAxis = orientation:horizontal ScaleMinor = grid:black unit:month increment:1 start:01/05/2007 Colors = id:canvas value:gray(0.88) id:GP value:red id:TD value:rgb(0.43,0.76,0.92) legend:Tropical_Depression_=_≤38_mph_(≤62_km/h) id:TS value:rgb(0.3,1,1) legend:Tropical_Storm_=_39–73_mph_(63–117_km/h) id:C1 value:rgb(1,1,0.85) legend:Category_1_=_74–95_mph_(118–153_km/h) id:C2 value:rgb(1,0.85,0.55) legend:Category_2_=_96–110_mph_(154–177_km/h) id:C3 value:rgb(1,0.62,0.35) legend:Category_3_=_111–129_mph_(178–208_km/h) id:C4 value:rgb(1,0.45,0.54) legend:Category_4_=_130–156_mph_(209–251_km/h) id:C5 value:rgb(0.55,0.46,0.90) legend:Category_5_=_≥157_mph_(≥252_km/h) Backgroundcolors = canvas:canvas BarData = barset:Hurricane bar:Month PlotData= barset:Hurricane width:10 align:left fontsize:S shift:(4,-4) anchor:till from:26/05/2007 till:31/05/2007 color:TS text:"Alvin (TS)" from:29/05/2007 till:02/06/2007 color:TS text:" Barbara (TS)" from:11/06/2007 till:13/06/2007 color:TD text:"Three-E (TD)" from:09/07/2007 till:11/07/2007 color:TD text:"Four-E (TD)" from:14/07/2007 till:15/07/2007 color:TD text:"Five-E (TD)" from:14/07/2007 till:23/07/2007 color:C1 text:" Cosme (C1)" from:21/07/2007 till:27/07/2007 color:TS text:" Dalila (TS)" from:31/07/2007 till:02/08/2007 color:TS text:"Erick (TS)" barset:break from:08/08/2007 till:16/08/2007 color:C4 text:" Flossie (C4)" from:29/08/2007 till:02/09/2007 color:TS text:"Gil (TS)" from:30/08/2007 till:05/09/2007 color:C1 text:" Henriette (C1)" from:18/09/2007 till:22/09/2007 color:C1 text:"Ivo (C1)" from:19/09/2007 till:20/09/2007 color:TD text:"Thirteen-E (TD)" from:29/09/2007 till:01/10/2007 color:TS text:"Juliette (TS)" from:14/10/2007 till:23/10/2007 color:TS text:" Kiko (TS)" bar:Month width:5 align:center fontsize:S shift:(0,-20) anchor:middle color:canvas from:01/05/2007 till:31/05/2007 text:May from:01/06/2007 till:30/06/2007 text:June from:01/07/2007 till:31/07/2007 text:July from:01/08/2007 till:31/08/2007 text:August from:01/09/2007 till:30/09/2007 text:September from:01/10/2007 till:31/10/2007 text:October from:01/11/2007 till:30/11/2007 text:November TextData = pos:(570,30) text:"(From the" pos:(618,30) text:"

Saffir–Simpson scale The Saffir–Simpson hurricane wind scale (SSHWS) classifies hurricanes—which in the Western Hemisphere are tropical cyclones that exceed the intensities of tropical depressions and tropical storms—into five categories distinguished by ...

May

;May 15 :*The Eastern Pacific hurricane season officially begins. ;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 Baja California (; 'Lower California'), officially the Free and Sovereign State of Baja California ( es, Estado Libre y Soberano de Baja California), is a state in Mexico. It is the northernmost and westernmost of the 32 federal entities of Mex ...

. ;May 28 :*5:00 p.m. PDT (00:00 UTC May 29) – Tropical Depression One-E strengthens into Tropical Storm Alvin. ;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 Puerto Escondido (English: "Hidden Port") is a small port and tourist center in the municipality of San Pedro Mixtepec Distrito 22 in the Mexican state of Oaxaca. Prior to the 1930s, there was no town. The bay had been used as a port intermittent ...

, Mexico. :*11:00 p.m. PDT (06:00 UTC May 30) – Tropical Storm Alvin weakens to a tropical depression. ;May 30 :*5:00 a.m. PDT (12:00 UTC) – Tropical Depression Two-E strengthens into

. ;May 31 :*5:00 p.m. PDT (00:00 UTC June 1) – Tropical Depression Alvin degenerates into a remnant low. :*5:00 p.m. PDT (00:00 UTC June 1) – Tropical Storm Barbara weakens to a tropical depression. :*11:00 p.m. PDT (06:00 UTC June 1) – Tropical Depression Barbara restrengthens into a tropical storm.

June

;June 2 :*6:00 a.m. PDT (13:00 UTC) – Tropical Storm Barbara makes landfall just northwest of the Mexico–

Guatemala Guatemala ( ; ), officially the Republic of Guatemala ( es, República de Guatemala, links=no), is a country in Central America. It is bordered to the north and west by Mexico; to the northeast by Belize and the Caribbean; to the east by H ...

border with 50 mph (85 km/h) winds.The figures for

maximum sustained wind The maximum sustained wind associated with a tropical cyclone is a common indicator of the intensity of the storm. Within a mature tropical cyclone, it is found within the eyewall at a distance defined as the radius of maximum wind, or RMW. Unl ...

s and position estimates are rounded to the nearest 5 units (

knots A knot is a fastening in rope or interwoven lines. Knot may also refer to: Places * Knot, Nancowry, a village in India Archaeology * Knot of Isis (tyet), symbol of welfare/life. * Minoan snake goddess figurines#Sacral knot Arts, entertainme ...

miles The mile, sometimes the international mile or statute mile to distinguish it from other miles, is a British imperial unit and United States customary unit of distance; both are based on the older English unit of length equal to 5,280 English ...

, or kilometers), following the convention used in the

'
operational products
for each storm. All other units are rounded to the nearest digit. :*11:00 a.m. PDT (18:00 UTC) – Tropical Storm Barbara weakens back to a tropical depression. :*5:00 p.m. PDT (00:00 UTC June 3) – Tropical Depression Barbara dissipates. ;June 11 :*5:00 a.m. PDT (12:00 UTC) – Tropical Depression Three-E forms 520 miles (835 km) south of the southern tip of the Baja California peninsula. ;June 12 :*5:00 p.m. PDT (00:00 UTC June 13) – Tropical Depression Three-E degenerates into a remnant low.

July

; July 9 :*11:00 a.m. PDT (18:00 UTC) – Tropical Depression Four-E forms several hundred miles southwest of

. ; July 10 :*11:00 p.m. PDT (06:00 UTC July 11) – Tropical Depression Four-E degenerates to a remnant low. ;July 14 :*5:00 a.m. PDT (12:00 UTC) – Tropical Depression Five-E forms about 690 mi (1,110 km) south-southwest of the southern tip of

. :*5:00 a.m. PDT (12:00 UTC) – Tropical Depression Six-E forms about halfway between Mexico and the

Hawaiian islands The Hawaiian Islands ( haw, Nā Mokupuni o Hawai‘i) are an archipelago of eight major islands, several atolls, and numerous smaller islets in the North Pacific Ocean, extending some from the island of Hawaii in the south to northernmost Kur ...

. ;July 15 :*11:00 a.m. PDT (18:00 UTC) – Tropical Depression Six-E strengthens into Tropical Storm Cosme. :*5:00 p.m. PDT (00:00 UTC July 16) – Tropical Depression Five-E degenerates into a remnant low. ;July 16 :*11:00 a.m. PDT (18:00 UTC) – Tropical Storm Cosme strengthens into Hurricane Cosme. :*5:00 p.m. PDT (00:00 UTC July 17) – Hurricane Cosme is downgraded to a tropical storm. ;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 The Central Pacific Hurricane Center (CPHC) of the United States National Weather Service is the official body responsible for tracking and issuing tropical cyclone warnings, watches, advisories, discussions, and statements for the Central Pacifi ...

's area of responsibility. ;July 21 :*5:00 p.m. PDT (00:00 UTC July 22) – Tropical Depression Seven-E forms south of Manzanillo. ;July 22 :*8:00 a.m. HST (18:00 UTC) – The final advisory is issued on dissipating Tropical Depression Cosme. ;July 23 :*5:00 p.m. PDT (00:00 UTC July 24) – Tropical Depression Seven-E strengthens into Tropical Storm Dalila. ;July 26 :*11:00 p.m. PDT (06:00 UTC July 27) – Tropical Storm Dalila is downgraded to a tropical depression. ;July 27 :*11:00 a.m. PDT (18:00 UTC) – Tropical Depression Dalila weakens into a low. ;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

. :*5:00 p.m. PDT (01:00 UTC August 1) – Tropical Depression Eight-E strengthens into Tropical Storm Erick.

August

;August 1 :*5:00 p.m. PDT (00:00 UTC August 2) – Tropical Storm Erick weakens into a tropical depression. :*11:00 p.m. PDT (06:00 UTC August 2) – Tropical Depression Erick degenerates into a

tropical wave A tropical wave (also called easterly wave, tropical easterly wave, and African easterly wave), in and around the Atlantic Ocean, is a type of atmospheric trough, an elongated area of relatively low air pressure, oriented north to south, which ...

. ;August 8 :*11:00 a.m. PDT (18:00 UTC) – Tropical Depression Nine-E forms well to the southwest of

. :*5:00 p.m. PDT (00:00 UTC August 9) – Tropical Depression Nine-E is upgraded to Tropical Storm Flossie. ;August 10 :*5:00 a.m. PDT (12:00 UTC) – Tropical Storm Flossie is upgraded to Hurricane Flossie. :*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. ;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

's area of responsibility. ;August 15 :*2:00 a.m. HST (12:00 UTC) – Hurricane Flossie is downgraded to a tropical storm. :*8:00 p.m. HST (06:00 UTC August 16) – Tropical Storm Flossie is downgraded to a tropical depression. ;August 16 :*8:00 a.m. HST (18:00 UTC) – Tropical Depression Flossie dissipates. ;August 29 :*5:00 a.m. PDT (12:00 UTC) – Tropical Depression Ten-E forms west of

Manzanillo, Mexico Manzanillo () is a city and seat of Manzanillo Municipality, in the Mexican state of Colima. The city, located on the Pacific Ocean, contains Mexico's busiest port, responsible for handling Pacific cargo for the Mexico City area. It is the large ...

. :*11:00 a.m. PDT (18:00 UTC) – Tropical Depression Ten-E is upgraded to Tropical Storm Gil. ;August 29 :*11:00 p.m. PDT (06:00 UTC August 30) – Tropical Depression Eleven-E forms southeast of

Acapulco Acapulco de Juárez (), commonly called Acapulco ( , also , nah, Acapolco), is a city and major seaport in the state of Guerrero on the Pacific Coast of Mexico, south of Mexico City. Acapulco is located on a deep, semicircular bay and has bee ...

, Mexico. ;August 31 :*5:00 a.m. PDT (12:00 UTC) – Tropical Depression Eleven-E is upgraded to Tropical Storm Henriette. ;August 31 :*5:00 p.m. PDT (00:00 UTC September 1) – Tropical Storm Gil is downgraded to a tropical depression.

September

;September 2 :*11:00 a.m. PDT (18:00 UTC) – Tropical Depression Gil is downgraded to a remnant low. ;September 3 :*11:00 p.m. PDT (06:00 UTC September 4) – Tropical Storm Henriette is upgraded to

. ;September 4 :*2:00 p.m. PDT (21:00 UTC) – Hurricane Henriette makes landfall just east of

San José del Cabo San José del Cabo (, ''Saint Joseph of the Cape'') is a city located in southern Baja California Sur state, Mexico. It is the seat of Los Cabos Municipality lying at a shallow bay northeast of Cabo San Lucas on the Gulf of California. The city h ...

, Mexico with 80 mph (130 km/h) winds. ;September 5 :*5:00 p.m. PDT (00:00 UTC September 6) – Hurricane Henriette is downgraded to a tropical storm. :*5:00 p.m. PDT (00:00 UTC September 6) – Tropical Storm Henriette makes a second landfall near

Guaymas Guaymas () is a city in Guaymas Municipality, in the southwest part of the state of Sonora, in northwestern Mexico. The city is south of the state capital of Hermosillo, and from the U.S. border. The municipality is located on the Gulf of Califo ...

, Mexico. ;September 5 :*11:00 p.m. PDT (06:00 UTC September 6) – Tropical Storm Henriette is downgraded to a tropical depression. ;September 6 :*5:00 a.m. PDT (12:00 UTC) – Tropical Depression Henriette dissipates. ;September 17 :*11:00 p.m. PDT (06:00 UTC September 18) – Tropical Depression Twelve-E forms south-southeast of the southern tip of

. ;September 18 :*5:00 p.m. PDT (00:00 UTC September 19) – Tropical Depression Twelve-E is upgraded to Tropical Storm Ivo. ;September 18 :*11:00 p.m. PDT (06:00 UTC September 19) – Tropical Depression Thirteen-E forms west-southwest of the southern tip of

. ;September 19 :*5:00 p.m. PDT (00:00 UTC September 20) – Tropical Storm Ivo is upgraded to Hurricane Ivo. ;September 20 :*5:00 p.m. PDT (00:00 UTC September 21) – Tropical Depression Thirteen-E is downgraded to a remnant low. ;September 21 :*11:00 a.m. PDT (18:00 UTC) – Hurricane Ivo is downgraded to a tropical storm. ;September 22 :*5:00 p.m. PDT (00:00 UTC September 23) – Tropical Storm Ivo is downgraded to a tropical depression. ;September 23 :*11:00 a.m. PDT (18:00 UTC) – Tropical Depression Ivo is downgraded to a low. ;September 28 :*5:00 p.m. PDT (00:00 UTC September 29) – Tropical Depression Fourteen-E forms west-southwest of Manzanillo. ;September 29 :*5:00 a.m. PDT (12:00 UTC) – Tropical Depression Fourteen-E is upgraded to Tropical Storm Juliette.

October

;October 1 :*5:00 p.m. PDT (00:00 UTC October 2) – Tropical Storm Juliette is downgraded to a tropical depression. ;October 2 :*5:00 a.m. PDT (12:00 UTC) – Tropical Depression Juliette is downgraded to a remnant low. ;October 14 :*5:00 p.m. PDT (00:00 UTC October 15) – Tropical Depression Fifteen-E forms southwest of Manzanillo. ;October 16 :*5:00 a.m. PDT (12:00 UTC) – Tropical Depression Fifteen-E is upgraded to Tropical Storm Kiko. :*11:00 a.m. PDT (18:00 UTC) – Tropical Storm Kiko is downgraded to a tropical depression. ;October 16 :*11:00 p.m. PDT (06:00 UTC October 17) – Tropical Depression Kiko restrengthens into a tropical storm. ;October 22 :*5:00 p.m. PDT (00:00 UTC October 23) – Tropical Storm Kiko is downgraded to a tropical depression. ;October 23 :*5:00 p.m. PDT (00:00 UTC October 24) – Tropical Depression Kiko is downgraded to a remnant low.

November

;November 30 :*The Eastern Pacific hurricane season officially ends.

Notes

References

{{DEFAULTSORT:Timeline of the 2007 Pacific hurricane season * Pacific hurricane meteorological timelines Articles which contain graphical timelines