page_title: Timeline of the 2018 Pacific hurricane season
section_title: June
hierarchical_section_title: Timeline of the 2018 Pacific hurricane season / Timeline of events / June
caption_attribution_description: English: Suomi NPP visible satellite imagery of Tropical Storm Carlotta at 20:01Z on June 16, 2018.
context_page_description: The 2018 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 May 15 in the eastern Pacific—east of 140°W—and began on June 1 in the central Pacific—between the International Date Line and 140°W, and ended on November 30. These dates typically cover the period of each year when most tropical cyclones form in the eastern Pacific basin.
  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, and Hawaii–Aleutian for storms between the International Date Line and 140°W. However, for convenience, all information is listed by Coordinated Universal Time 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.
context_section_description: June 1
  The 2018 Central Pacific hurricane season officially begins.
  June 6
  00:00 UTC (7:00 p.m. CDT June 5) at 14.0°N 105.4°W – Tropical Depression Two-E develops from an area of low pressure roughly 325 mi (525 km) south-southwest of Punta San Telmo, Michoacán.
  06:00 UTC (12:00 a.m. MDT) at 14.2°N 106.1°W – Tropical Depression Two-E intensifies into Tropical Storm Aletta roughly 335 mi (540 km) south-southwest of Punta San Telmo, Michoacán.
  June 7
  18:00 UTC (12:00 p.m. MDT) at 15.1°N 109.6°W – Tropical Storm Aletta intensifies into a Category 1 hurricane roughly 425 mi (685 km) southwest of Punta Pérula, Jalisco.
  June 8
  00:00 UTC (6:00 p.m. MDT June 7) at 15.4°N 110.1°W – Hurricane Aletta intensifies into a Category 2 hurricane roughly 435 mi (700 km) southwest of Punta Pérula, Jalisco.
  06:00 UTC (12:00 a.m. MDT) at 15.6°N 110.6°W – Hurricane Aletta intensifies into a Category 3 hurricane about roughly 450 mi (725 km) southwest of Punta Pérula, Jalisco.
  12:00 UTC (6:00 a.m. MDT) at 15.7°N 111.0°W – Hurricane Aletta intensifies into a Category 4 hurricane roughly 470 mi (755 km) southwest of Punta Pérula, Jalisco. Simultaneously, the storm reaches peak intensity with winds of 140 mph (220 km/h) and a minimum pressure of 943 mbar (27.8 inHg).
  June 9
  00:00 UTC (6:00 p.m. MDT June 8) at 16.0°N 112.0°W – Hurricane Aletta weakens into a Category 3 hurricane roughly 490 mi (790 km) south-southwest of Cabo San Lucas, Baja California Sur.
  12:00 UTC (6:00 a.m. MDT) at 16.2°N 113.0°W – Hurricane Aletta weakens into a Category 2 hurricane roughly 500 mi (805 km) south-southwest of Cabo San Lucas, Baja California Sur.
  18:00 UTC (12:00 p.m. MDT) at 16.1°N 113.5°W – Hurricane Aletta weakens into a Category 1 hurricane roughly 520 mi (835 km) south-southwest of Cabo San Lucas, Baja California Sur.
  18:00 UTC (1:00 p.m. CDT) at 12.1°N 100.5°W – Tropical Depression Three-E forms about 330 mi (530 km) south of Acapulco.
  June 10
  00:00 UTC (6:00 p.m. MDT June 9) at 15.9°N 114.0°W – Hurricane Aletta weakens into a tropical storm roughly 545 mi (875 km) south-southwest of Cabo San Lucas, Baja California Sur.
  00:00 UTC (7:00 p.m. CDT June 9) at 12.7°N 101.3°W – Tropical Depression Three-E strengthens into Tropical Storm Bud about 305 mi (490 km) south of Acapulco.
  18:00 UTC (1:00 p.m. CDT) at 15.1°N 103.8°W – Tropical Storm Bud intensifies into a Category 1 hurricane about 280 mi (450 km) south of Manzanillo, Colima.
  June 11
  06:00 UTC (12:00 a.m. MDT) at 16.1°N 105.6°W – Hurricane Bud intensifies into a Category 2 hurricane about 225 miles (360 km) south-southwest of Manzanillo, Colima.
  12:00 UTC (8:00 a.m. PDT) at 15.9°N 114.0°W – Tropical Storm Aletta degenerates into a remnant low roughly 640 mi (1,030 km) south-southwest of Cabo San Lázaro, Baja California Sur.
  12:00 UTC (6:00 a.m. MDT) at 16.4°N 106.4°W – Hurricane Bud intensifies into a Category 3 hurricane about 280 miles (450 km) south-southwest of Cabo Corrientes, Mexico.
  June 12
  00:00 UTC (6:00 p.m. MDT June 11) at 17.3°N 107.4°W – Hurricane Bud reaches peak intensity with winds of 140 mph (220 km/h) and a pressure of 943 mbar (hPa; 27.85 inHg), while located about 240 miles (390 km) south-southwest of Cabo Corrientes, Mexico.
  12:00 UTC (6:00 a.m. MDT) at 18.0°N 108.1°W – Hurricane Bud weakens into a Category 3 hurricane about 230 miles (365 km) southwest of Cabo Corrientes, Mexico.
  June 13
  00:00 UTC (6:00 p.m. MDT June 12) at 18.5°N 108.5°W – Hurricane Bud weakens into a Category 1 hurricane about 310 miles (500 km) south-southeast of Cabo San Lucas, Mexico.
  12:00 UTC (6:00 a.m. MDT) at 19.2°N 108.7°W – Hurricane Bud weakens into a tropical storm about 265 miles (430 km) south-southeast of Cabo San Lucas, Mexico.
  June 14
  18:00 UTC (1:00 p.m. CDT) at 14.9°N 100.0°W – Tropical Depression Four-E develops from an area of low pressure about 140 miles (220 km) south of Acapulco, Mexico.
  June 15
  02:00 UTC (8:00 p.m. MDT June 14) at 23.0°N 109.7°W – Tropical Storm Bud makes landfall near San José del Cabo, about 15 miles (25 km) east-northeast of Cabo San Lucas, Mexico.
  12:00 UTC (6:00 a.m. 
caption: Tropical Storm Carlotta paralleling the coast of Mexico on June 16
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