Hurricane John (2024)

Last updated

Map key
  Tropical depression (≤38 mph, ≤62 km/h)
  Tropical storm (39–73 mph, 63–118 km/h)
  Category 1 (74–95 mph, 119–153 km/h)
  Category 2 (96–110 mph, 154–177 km/h)
  Category 3 (111–129 mph, 178–208 km/h)
  Category 4 (130–156 mph, 209–251 km/h)
  Category 5 (≥157 mph, ≥252 km/h)
  Unknown
Storm type
Disc Plain black.svg Tropical cyclone
Solid black.svg Subtropical cyclone
ArrowUp.svg Extratropical cyclone, remnant low, tropical disturbance, or monsoon depression

On September 21, an area of low pressure producing disorganized showers and thunderstorms formed off the coast of southern Mexico. [1] The system became better organized the following day and attained a closed surface circulation, resulting in the formation of Tropical Depression TenE on the afternoon of September 22, about 175 mi (280 km) south of Punta Maldonado, Guerrero. [2] The system continued to develop that night, and strengthened into Tropical Storm John at 06:00 UTC the following morning. [3] While moving slowly to the north-northeast on September 23, caught in the southwesterly flow associated with the monsoon trough near Central America, [4] John commenced to rapidly intensify. It became a Category 1 hurricane at 17:45 UTC that same day, [5] and then, just nine hours later, reached Category 3 major hurricane intensity with sustained winds of 120 mph (195 km/h). [6] It was at that intensity that John made landfall in Marquelia, Guerrero, about 25 mi (40 km) northwest of Punta Maldonado, at 03:20 UTC on September 24. [7] John rapidly weakened inland, with its winds falling to tropical storm strength about 12 hours later. [8] By 18:00 UTC on September 24, John dissipated over the rugged terrain of southern Mexico. [9]

An elongated trough developed in association with John's remnants as the cyclone dissipated. [9] The trough produced a large area of shower and thunderstorm activity, and began showing signs of organization on September 25. [10] Ship observations indicated significant pressure falls within the system, and by 15:00 UTC, John reformed into a tropical storm. [11] [12] John moved slowly to the north-northwest after it reformed, and within favorable environmental conditions for strengthening, the storm steadily re-intensified. [13] Continuing its slow motion very close to the southwestern coast of Mexico, John developed a small, closed eye, and re-intensified to a minimal hurricane at 12:00 UTC on September 26. [14] [15] John continued to move very slowly near the coast, where its proximity to the rugged terrain of Mexico halted intensification; the cyclone weakened to a tropical storm at 3:00 UTC the following day. [16] After hugging the coast for nearly 36 hours and continuing to weaken, John finally made landfall on southwestern Mexico for the second time at 18:00 UTC on September 27. [17] John's surface center dissipated shortly thereafter, and the United States-based National Hurricane Center issued its final advisory on the storm three hours later. [18]

Preparations and impact

Hurricane John
John 2024-09-24 0150Z.jpg
John at peak intensity while it approached the coast of Mexico early on September 24
Hurricane Helene and Tropical Storm John both impacting Mexico on September 25 Hurricane Helene and Tropical Storm John 2024-09-25.jpg
Hurricane Helene and Tropical Storm John both impacting Mexico on September 25

Upon the formation of John as a tropical cyclone on the afternoon of September 22, a Tropical Storm Watch was issued from Punta Maldonado to Salina Cruz, Oaxaca. [19] At 09:00 UTC the following day, this was changed to a Tropical Storm Warning from Punta Maldonado to Huatulco, with a Tropical Storm Watch extending to Salina Cruz. A Hurricane Watch was declared within the Tropical Storm Warning area. [20] The Hurricane Watch was upgraded to a Hurricane Warning a few hours later. [21] A red emergency alert was issued for Guerrero and Oaxaca. [22] John threatened parts of Mexico still recovering from Hurricane Otis the previous year, which underwent a similar rapid intensification phase. Tourists in Puerto Escondido, Oaxaca, were expected to be evacuated by the Secretariat of Civil Protection (SSPC). [23] Businesses across the city were closed. [24] The Puerto Escondido International Airport also closed for the duration of the storm. [25] More than 80 emergency shelters were prepared and 3,000 people were evacuated. [24] The Federal Electricity Commission (CFE) deployed over 1,400 electricians and several cranes and emergency power plants to respond to power outages in affected regions. [26] Schools were closed in Guerrero and Oaxaca. [22]

At least 29 people died in the storm: 23 in Guerrero, 5 in Oaxaca, and 1 in Michoacán. [27] Governor of Guerrero Evelyn Salgado reported two deaths caused by a landslide in the municipality of Tlacoachistlahuaca. [28] Additionally, a 70-year-old woman was killed in Malinaltepec when a landslide struck her house. [29] John dropped 1,442 mm (56.8 in) of rain in parts of Guerrero, five times the amount that fell during Otis's passage the previous year; 19 neighborhoods were left completely underwater, and over 2,000 homes were flooded. [30] [31] Areas along the coast experienced mudslides while tin roofs were blown off several houses. [32] Over 250 mm (10 in) of rain fell across parts of Guerrero and Oaxaca within the first few hours after John's landfall. Over 98,000 people lost power in Oaxaca, where 18,000 armed services members and government workers were deployed to assist in emergency response operations. [33] Torrential rains also fell across the neighboring states of Chiapas, Veracruz, Michoacán and Puebla. [34] A year's worth of rainfall fell within days in parts of southwestern Mexico. At least 80 landslides occurred in Oaxaca, cutting off roads and communities in the state. [35] 13 restaurants collapsed in Acapulco. [27]

The president of the Acapulco Chamber of Commerce, Services and Tourism, Alejandro Martínez Sidney, stated that losses from John in Guerrero were estimated to be between MXN$11.5 billion (USD$50.876.3 million). [lower-alpha 1] [36] Following the storm, the Mexican Navy activated Plan DN-III-E, a disaster relief and rescue plan, with 25,000 military units deployed to assist residents affected by John. [30]

See also

Notes

  1. All currencies calculated using exchangerates.org, based off exchange rates for September 30, 2024

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<span class="mw-page-title-main">Hurricane Bonnie (2022)</span> Category 3 Atlantic and Pacific hurricane

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<span class="mw-page-title-main">Tropical Storm Lester (2022)</span> Eastern Pacific tropical storm in September 2022

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