Neha Patil

1959 Pacific hurricane season

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First system formed  June 8, 1959
Name  Patsy
Total storms  15
Last system dissipated  October 29, 1959
Total depressions  15
Hurricanes  5
1959 Pacific hurricane season

The 1959 Pacific hurricane season featured the first Category 5 hurricane ever recorded in the Central Pacific basin.

Contents

During the season, 15 storms developed, 5 of those became hurricanes, and 3 of those became major hurricanes. The strongest of the storms was Hurricane Dot, which was a Category 4 and made landfall on Kauai, Hawaii, as a Category 1. Patsy reached 170 miles per hour (270 km/h) winds, but had a pressure higher than Dot. The deadliest storm of the season was Hurricane Fifteen, which made landfall in Mexico at Category 4 and killed 1,800 people.

Tropical Storm One

A 55 mph (75 km/h) tropical storm was first located on June 9 while west of Mexico. It did not strengthen any further as it paralleled the Mexican coast. It made landfall near Los Mochis, Mexico on June 12 and dissipated shortly afterward. There are no reports of damages or deaths due to the storm.

Tropical Storm Two

On June 25, a small tropical storm developed off the coast of Mexico. It attained winds of 50 mph at its peak. It later dissipated on June 27.

Tropical Storm Clara

After a month of inactivity, a tropical storm formed several thousands of miles south-west of the southern tip of Baja California. This tropical storm began moving north-westwards while keeping its intensity. Winds peaked at 50 mph (85 km/h). On July 19, this tropical storm began moving west and finally dissipated 3 days later.

The name Clara was assigned from the North Pacific Typhoon name list.

Tropical Storm Four

Soon after Tropical Storm Three dissipated, a new tropical storm formed in the open Pacific. Tropical Storm Four moved west, then west-north-west. Like the previous 2 tropical storms, it did not affect land. It dissipated on July 25.

Tropical Storm Five

Tropical Storm Five was a short-lived tropical storm, only lasting a day. It peaked at a relatively weak 45 mph (75 km/h). It moved parallel to the Mexican coast.

Hurricane Dot

Dot was first identified as a strong tropical storm southeast of Hawaiʻi on August 1. The storm was potentially a continuation of a previously unnamed tropical cyclone that was monitored west of the Baja California Peninsula from July 24-27, but was never confirmed due to a lack of ship reports. Dot was quick to intensify, reaching hurricane intensity six hours after naming. By August 3, Dot reached its peak intensity, with maximum sustained winds reaching 150 mph (240 km/h). Intensity leveled off afterwards as Dot tracked westward before making a curve towards the northwest on August 5, after which the hurricane weakened at a faster clip. Dot made landfall the next day on Kauai as a minimal hurricane before dissipating west of the Hawaiian Islands on August 8.

Dot produced heavy rainfall and gusty winds as it passed south of the Big Island, Lanai, Maui, Molokai, and Oahu, resulting in minor damage. In Oahu, some homes along the coast were unroofed, and damage from wave action was also reported. Damage from these four islands totaled US$150,000, and two indirect deaths occurred in Lanai. Extensive damage occurred on Kauai as Dot made landfall, producing wind gusts as high as 103 mph (166 km/h) and toppling trees and power lines. Widespread power outages affected the island, causing telecommunications and water systems to fail. Although infrastructure was damaged to an extent by floodwater and strong winds, crops suffered the most losses. Cane sugar crops sustained US$2.7 million in losses. Overall, damage from Dot across Hawaii totaled US$6 million, and a disaster area declaration and state of emergency took effect for the archipelago after the hurricane's passage.

Tropical Storm Seven

On August 4, a tropical storm formed at about 26°N, quite a long way north for tropical cyclone formation. This system gradually moved west and then turned to the west-south-west late on August 5. It dissipated a couple of hours later.

Tropical Storm Eight

Tropical Storm Eight formed on August 19, a several hundred miles west of Mexico. This system did not affect land so no deaths or damages were contributed to this tropical storm.

Tropical Storm Nine

Just days after Tropical Storm Eight dissipated, meteorologists noticed a new tropical system that, once again, was out at sea. Although the storm reached 45 mph winds, it only lasted 2 days.

Hurricane Ten

Hurricane Ten formed off the coast of Guatemala as a Category 1 hurricane. It nearly made landfall on September 6. The system turned to the north, then NNW on September 7. It made landfall in Baja California Sur and continued along the state before weakening to a tropical storm, then a tropical depression. It dissipated near the USA-Mexico border.

Hurricane Patsy

On September 6, reports from aircraft indicated the existence of a hurricane near the international dateline. Earlier stages were missed because of a lack of data in the isolated area. Six hours after classification, Patsy reached Category 5 strength, with winds of 160 mph, although it is possible Category 5 status was reached before. A trough moved Patsy northeast. The trough then weakened, and allowed Patsy to curve northwest. The Japan Meteorological Agency's best track at this time Patsy crossed the dateline, at Category 4 strength. A second trough then formed, dominated the first, and recurved Patsy northeast, recrossing the dateline, at Category 3 intensity. The storm then quickly weakened due to unfavorable conditions, while slowly curving northwards. From reports, it is estimated Patsy dissipated on September 10, though other reports credit Patsy with having regenerated as a tropical depression on September 13, north of Hawaii. Patsy's track around the International Dateline was unseen and erratic. Typhoon June's track the year before was somewhat similar. Patsy is also an uncommon west to east crosser of the dateline, and one of the few storm to cross the dateline twice, though Hurricane/Typhoon John in 1994 crossed the dateline four times. although that of Typhoon June 1958 was somewhat similar.

The National Hurricane Center's "best track" data set has Patsy exclusively east of the dateline from detection to dissipation. The Japan Meteorological Agency's "best track" does not give windspeeds, only indicating that Patsy was a typhoon. The Joint Typhoon Warning Center's report disagrees on location but also has Patsy's maximum windspeed east of the dateline; the JMA's data does not indicate windspeeds. By reaching Category 5 intensity on September 6, 1959, it is the earliest known Pacific hurricane to reach that intensity on the Saffir-Simpson Hurricane Scale. Also, its maximum reported windspeed of 150 knots (280 km/h) makes it the central Pacific hurricane with the highest sustained winds; Hurricane John tied this record in 1994. In addition, Patsy is an uncommon west-to-east crosser of the dateline. Including only systems recognized by the Central Pacific Hurricane Center, that has only happened seven times since.

Hurricane Twelve

Twelve stayed to sea and was a hurricane for its life.

Tropical Storm Wanda

Tropical Storm Wanda existed from September 26 to September 27. The name Wanda was assigned from the North Pacific Typhoon name list.

Tropical Storm Fourteen

Tropical Storm Fourteen existed from October 19 to October 21.

Hurricane Fifteen

The most notable storm this year was the 1959 Mexico Hurricane. It made landfall as a Category 4 and killed at least 1800 people.

References

1959 Pacific hurricane season Wikipedia


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