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1975 Pacific hurricane season

1975 Pacific hurricane season
1975 Pacific hurricane season summary map.png
Season summary map
Seasonal boundaries
First system formed June 2, 1975
Last system dissipated November 7, 1975
Strongest storm
Name Denise
 • Maximum winds 140 mph (220 km/h)
(1-minute sustained)
 • Lowest pressure 934 mbar (hPa; 27.58 inHg)
Seasonal statistics
Total depressions 21
Total storms 17
Hurricanes 9
Major hurricanes
(Cat. 3+)
4
Total fatalities 30
Total damage Unknown
Related articles
Pacific hurricane seasons
1973, 1974, 1975, 1976, 1977
Category 1 hurricane (SSHWS)
AgathaJun419751745UTCSMS2.png Agatha 1975 track.png
Duration June 2 – June 5
Peak intensity 80 mph (130 km/h) (1-min) ≤ 1005 mbar (hPa)
Tropical storm (SSHWS)
BridgetJun2919751645UTCSMS2.png Bridget 1975 track.png
Duration June 28 – July 3
Peak intensity 65 mph (100 km/h) (1-min) 
Category 3 hurricane (SSHWS)
CarlottaJuly519751645UTCSMS2.png Carlotta 1975 track.png
Duration July 2 – July 11
Peak intensity 125 mph (205 km/h) (1-min) 
Category 4 hurricane (SSHWS)
DeniseJuly1119751656UTC.png Denise 1975 track.png
Duration July 5 – July 15
Peak intensity 140 mph (220 km/h) (1-min) 
Tropical storm (SSHWS)
EleanorJuly1219750339UTC.png Eleanor 1975 track.png
Duration July 10 – July 12
Peak intensity 40 mph (65 km/h) (1-min) 
Tropical storm (SSHWS)
Francenejul2719752345UTC.gif Francene 1975 track.png
Duration July 27 – July 30
Peak intensity 50 mph (85 km/h) (1-min) 
Tropical storm (SSHWS)
Georgetteaug1219751915UTC.gif Georgette 1975 track.png
Duration August 11 – August 14
Peak intensity 45 mph (75 km/h) (1-min) 
Tropical storm (SSHWS)
Hilaryaug1419752345UTC.gif Hilary 1975 track.png
Duration August 13 – August 17
Peak intensity 60 mph (95 km/h) (1-min) 
Category 2 hurricane (SSHWS)
Ilsaaug2419752145UTC.gif Ilsa 1975 track.png
Duration August 18 – August 26
Peak intensity 105 mph (165 km/h) (1-min) 

The 1975 Pacific hurricane season officially started May 15, 1975, in the eastern Pacific, and June 1, 1975, in the central Pacific, and lasted until November 30, 1975. These dates conventionally delimit the period of each year when most tropical cyclones form in the northeast Pacific Ocean.

The 1975 Pacific hurricane season was near average, with 17 tropical storms forming. Of these, 9 became hurricanes, and 4 became major hurricanes by reaching Category 3 or higher on the Saffir-Simpson Hurricane Scale. The only notable storms are Hurricane Olivia, which killed 30 people, caused $30 million (1975 USD) in damage, and left thousands homeless when it made landfall in October; and an unnamed hurricane that developed at very high latitude, but had no effect on land. Hurricane Denise was the strongest storm of the year. Hurricanes Lily and Katrina passed close to Socorro Island and Tropical Storm Eleanor made landfall in Mexico. Hurricane Agatha sank a ship.

The season began with the formation of Tropical Depression One on June 2 and ended with the extratropical transition of Tropical Storm Priscilla on November 7. No named systems formed in May, two in June, four in July, six in August, three in September, one in October, and one in November. The total length of the season, from the formation of the first depression to the dissipation of the last, was 158 days.

In the eastern Pacific proper (east of 140°W), sixteen tropical storms and eight hurricanes formed. Four of the hurricanes became major hurricanes by reaching Category 3 or higher on the Saffir-Simpson Hurricane Scale. These numbers are close to the long-term averages of fifteen tropical storms, nine hurricanes, and four major hurricanes. There were also four unnamed tropical depressions. The only system to enter or form in the central Pacific (between 140°W and the international dateline) was an unusual high-latitude hurricane.

The only systems to make landfall this year were Tropical Storm Eleanor and Hurricane Olivia. Besides these two systems, Hurricane Agatha caused the sinking of a ship carrying millions of dollars worth of cargo. Tropical Storm Eleanor caused no serious impact.


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