The 2017 Pacific hurricane season was an event in the annual cycle of tropical cyclone formation, in which tropical cyclones form in the eastern Pacific Ocean. The season officially started on May15 in the eastern Pacific—east of 140°W—and on June1 in the central Pacific—between the International Date Line and 140°W—and ended on November30. These dates typically cover the period of each year when most tropical cyclones form in the eastern Pacific basin.[1] However, storm formation is possible at any time of the year, as illustrated in 2017 by the formation of the season's first named storm, Tropical Storm Adrian, on May 10. At the time, this was the earliest formation of a tropical storm on record in the basin.[2]
Parts of this article (those related to August to November 2017) need to be updated. (December 2017)
Quick Facts Timeline of the 2017 Pacific hurricane season, Season boundaries ...
Four time zones are utilized in the basin: Central for storms east of 106°W, Mountain between 114.9°W and 106°W, Pacific between 140°W and 115°W,[3] and Hawaii–Aleutian for storms between the International Date Line and 140°W. However, for convenience, all information is listed by Coordinated Universal Time (UTC) first with the respective local time included in parentheses. This timeline includes information that was not operationally released, meaning that data from post-storm reviews by the National Hurricane Center is included. This timeline documents tropical cyclone formations, strengthening, weakening, landfalls, extratropical transitions, and dissipations during the season.
00:00UTC (7:00p.m. CDT June12) at 15.9°N 95.7°W / 15.9; -95.7 (Tropical Storm Calvin makes landfall)– Tropical Storm Calvin reaches peak intensity with winds of 45mph (70km/h) and a minimum pressure of 1004 mbar (hPa; 29.65inHg), and simultaneously makes landfall near Paja Blanca, Mexico.[5]
06:00UTC (12:00a.m. MDT July 8) at 15.2°N 114.1°W / 15.2; -114.1– Hurricane Eugene rapidly intensifies into a Category2 hurricane approximately 600miles (960km) south-southwest of the southern tip of the Baja California Peninsula.[7]
12:00UTC (6:00a.m. MDT) at 16.3°N 115.0°W / 16.3; -115.0– Hurricane Eugene rapidly intensifies into a Category3 hurricane and simultaneously attains its peak intensity with maximum sustained winds of 115mph (185km/h) and a minimum barometric pressure of 966 mbar (hPa; 28.53inHg) about 565miles (910km) southwest of the southern tip of the Baja California Peninsula.[7]
July10
00:00UTC (5:00p.m. PDT July9) at 17.1°N 115.6°W / 17.1; -115.6– Hurricane Eugene weakens to a Category2 hurricane roughly 535miles (860km) southwest of the southern tip of the Baja California Peninsula.[7]
00:00UTC (5:00p.m. PDT July10) at 19.6°N 118.0°W / 19.6; -118.0– Hurricane Eugene weakens to a tropical storm about 560miles (900km) south-southwest of Punta Eugenia, Mexico.[7]
18:00UTC (12:00p.m. MDT) at 12.2°N 108.4°W / 12.2; -108.4– Tropical Depression Six-E develops from an area of low pressure about 740miles (1,190km) south of the southern tip of the Baja California Peninsula.[8]
July12
12:00UTC (5:00a.m. PDT) at 23.2°N 121.5°W / 23.2; -121.5– Tropical Storm Eugene weakens to a tropical depression roughly 510miles (815km) west-southwest of Punta Eugenia, Mexico.[7]
12:00UTC (6:00a.m. MDT) at 11.9°N 111.8°W / 11.9; -111.8– Tropical Depression Six-E intensifies into Tropical Storm Fernanda about 760miles (1,225km) south of the southern tip of the Baja California Peninsula.[8]
18:00UTC (11:00a.m. PDT) at 23.7°N 122.2°W / 23.7; -122.2– Tropical Depression Eugene degenerates to a remnant low approximately 525miles (845km) west-southwest of Punta Eugenia, Mexico.[7]
July13
18:00UTC (11:00a.m. PDT) at 11.3°N 115.5°W / 11.3; -115.5– Tropical Storm Fernanda intensifies into a Category1 hurricane about 900miles (1,450km) south-southwest of the southern tip of the Baja California Peninsula.[8]
July14
06:00UTC (11:00p.m. PDT July 13) at 11.0°N 117.4°W / 11.0; -117.4– Hurricane Fernanda intensifies into a Category2 hurricane roughly 975miles (1,570km) southwest of the southern tip of the Baja California Peninsula.[8]
18:00UTC (11:00a.m. PDT) at 10.7°N 119.3°W / 10.7; -119.3– Hurricane Fernanda intensifies into a Category3 hurricane approximately 1,020miles (1,640km) southwest of the southern tip of the Baja California Peninsula.[8]
July15
00:00UTC (5:00p.m. PDT July 14) at 10.7°N 120.3°W / 10.7; -120.3– Hurricane Fernanda intensifies into a Category4 hurricane and simultaneously reaches its peak intensity of 145mph (230km/h) and a minimum barometric pressure of 948 mbar (hPa; 27.99 inHg), the second strongest hurricane so far south in the eastern Pacific, about 1,060miles (1,710km) southwest of the southern tip of the Baja California Peninsula.[8][9]
July17
00:00 UTC (5:00p.m. PDT July 16) at 12.8°N 128.8°W / 12.8; -128.8 – Hurricane Fernanda weakens to a Category 3 hurricane about 1545 miles (2485km) west-southwest of the southern tip of Baja California.[8]
06:00UTC (11:00p.m. PDT July 16) at 13.1°N 115.9°W / 13.1; -115.9– Tropical Depression Eight-E develops from an area of low pressure approximately 815miles (1,315km) southwest of the southern tip of the Baja California Peninsula.[10]
12:00UTC (6:00a.m. CDT) at 14.1°N 105.0°W / 14.1; -105.0– Tropical Depression Seven-E develops from an area of low pressure approximately 340miles (550km) south of Manzanillo, Colima.[11]
18:00 UTC (11:00a.m. PDT) at 13.7°N 116.8°W / 13.7; -116.8 –Tropical Depression Eight-E reaches its peak intensity of 35mph (55km/h) and a minimum barometric pressure of 1007 mbar (hPa; 29.74 inHg).[10]
July18
00:00UTC (5:00p.m. PDT July17) at 14.4°N 131.8°W / 14.4; -131.8– Hurricane Fernanda weakens to a Category2 hurricane roughly 1,560miles (2,515km) west-southwest of the southern tip of the Baja California Peninsula.[8]
12:00UTC (6:00a.m. MDT) at 14.5°N 107.9°W / 14.5; -107.9– Tropical Depression Seven-E intensifies into Tropical Storm Greg about 375miles (600km) southwest of Manzanillo, Colima.[11]
06:00UTC (11:00p.m. PDT July 20) at 18.0°N 137.5°W / 18.0; -137.5– Hurricane Fernanda weakens to a tropical storm roughly 1,140miles (1,835km) east of Hilo, Hawaii.[8]
06:00UTC (11:00p.m. PDT July 20) at 13.9°N 122.5°W / 13.9; -122.5– Tropical Depression Eight-E degenerates to a remnant area of low pressure roughly 1130miles (1820km) west-southwest of the southern tip of the Baja California Peninsula.[10]
July21
00:00UTC (5:00p.m. PDT July 20) at 14.2°N 117.0°W / 14.2; -117.0– Tropical Storm Greg attains peak winds of 60mph (95km/h) and a minimum barometric pressure of 1000 mbar (hPa; 29.53 inHg) while located 810miles (1,305km) southwest of the southern tip of the Baja California Peninsula.[11]
12:00UTC (7:00a.m. CDT) at 8.8°N 92.3°W / 8.8; -92.3– Tropical Depression Nine-E develops from an area of low pressure approximately 505miles (815km) south-southeast of Puerto Ángel, Oaxaca.[12]
18:00UTC (8:00a.m. HST) at 19.4°N 146.9°W / 19.4; -146.9– Tropical Storm Fernanda degenerates to a remnant area of low pressure roughly 500miles (805km) east of Hilo, Hawaii.[8]
06:00UTC (1:00a.m. CDT) at 15.0°N 106.3°W / 15.0; -106.3– Hurricane Hilary intensifies into a Category2 hurricane approximately 290miles (470km) south-southwest of Manzanillo, Colima.[12]
18:00UTC (11:00a.m. PDT) at 15.8°N 119.8°W / 15.8; -119.8 (Hurricane Irwin reaches its peak intensity)– Hurricane Irwin peaks as a strong Category1 hurricane with winds of 90mph (145km/h) and a central pressure of 979 mbar (hPa; 28.91inHg) approximately 855miles (1,375km) west-southwest of the southern tip of the Baja California Peninsula.
July26
00:00 UTC (5:00p.m. PDT July 25) at 16.8°N 138.3°W / 16.8; -138.3 – Tropical Storm Greg weakens to a tropical depression about 1185 miles (1910km) east of South Point, Hawaii.[11]
00:00UTC (6:00p.m. MDT July 25) at 15.9°N 109.3°W / 15.9; -109.3– Hurricane Hilary reaches its peak intensity with winds of 110mph (175km/h) and a minimum pressure of 969 mbar (hPa; 28.61inHg) while located about 480miles (770km) south-southwest of the southern tip of the Baja California Peninsula.[12]
18:00 UTC (8:00a.m. HST) at 18.3°N 141.6°W / 18.3; -141.6 – Tropical Depression Greg degenerates into a remnant area of low pressure about 865 miles (1395km) east-southeast of Hawaii.[11][14]
July27
06:00UTC (12:00a.m. MDT) at 17.1°N 114.6°W / 17.1; -114.6 – Hurricane Hilary weakens back to a Category1 hurricane around 515miles (825km) southwest of the southern tip of the Baja California Peninsula.[12]
July28
00:00UTC (5:00p.m. PDT July27) at 18.1°N 116.9°W / 18.1; -116.9– Hurricane Hilary further weakens to a tropical storm about 575miles (925km) west-southwest of the southern tip of the Baja California Peninsula.[12]
July31
00:00UTC (5:00p.m. PDT July30) at 25.3°N 127.9°W / 25.3; -127.9– Tropical Storm Hilary degenerates to a post-tropical cyclone about 1,185miles (1,905km) west-northwest of the southern tip of the Baja California Peninsula.[12]
August
August1
18:00UTC (11:00a.m. PDT) at 26.4°N 129.5°W / 26.4; -129.5– Tropical Storm Irwin degenerates to a post-tropical cyclone roughly 1,230miles (1,980km) west-northwest of the southern tip of the Baja California Peninsula.[13]
12:00UTC (6:00a.m. MDT) at 19.3°N 109.8°W / 19.3; -109.8– Tropical Depression Twelve-E forms about 150 miles (240km) west-southwest of Manzanillo.[16]
18:00 UTC (12:00p.m. MDT) at 18.8°N 108.0°W / 18.8; -108.0 (Tropical Depression Twelve-E becomes Tropical Storm Jova) – Tropical Depression Twelve-E intensifies into Tropical Storm Jova and simultaneously reaches its peak intensity with winds 40mph (65km/h) and a minimum pressure of 1003 mbar (hPa; 29.62 inHg), about 250miles (400km) south of the southern tip of Baja California.[16]
00:00 UTC (5:00p.m. PDT September 17) at 17.6°N 127.2°W / 17.6; -127.2 (Hurricane Otis reaches its peak intensity) – Hurricane Otis becomes a Category 3 hurricane and reaches its peak intensity of 115mph (185km/h) and a minimum pressure of 965 mbar (hPa; 28.50 inHg) about 1,170 miles (1,880km) west-southwest of the southern tip of Baja California.[19]
Brennan, Michael J.; Powell, Jeff (February 28, 2019). Hurricane Fernanda(PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved February 24, 2021.
Pasch, Richard J.; Zelinsky, David A.; Jeselma, Jon (March 16, 2018). Tropical Storm Greg(PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved February 24, 2021.