[3][4] Tropical Depression Four-E, was the first of three cyclones to cross into the Central Pacific Hurricane Center's area of responsibility, which is between 140°W and the International Date Line.

[5] After crossing the International Date Line on August 20, Dora became the first tropical cyclones to exist in all three basins of the North Pacific – Eastern, Central, and Western – since Hurricane John in 1994.

[2] Hurricane Eugene also existed in the Eastern and Central Pacific, but dissipated on August 15 while south of the main Hawaiian Islands, well before reaching the International Date Line.

[8] The remnant moisture from the system, combined with an area of low pressure, resulted in strong thunderstorms across California, which led to numerous power outages, damage to homes and vehicles, and started many wildfires.

[2] The final system, Tropical Storm Irwin, produced scattered areas of heavy rainfall over Mexico in October,[12] but caused no significant flooding.

A broad area of low pressure developed into Tropical Depression One at 0600 UTC on June 18, while situated 290 miles (470 km) southeast of Acapulco, Guerrero.

Early on June 20 Adrian intensified into a hurricane, while located about 420 miles (680 km) south-southeast of the southern tip of Baja California.

About 24 hours later, Adrian reached its peak intensity with winds of 100 mph (160 km/h) and a minimum barometric pressure of 973 mbar (28.7 inHg).

[15] After reaching peak intensity on June 21, Adrian began weakening due to colder SST's and higher wind shear.

Six hours later at 1800 UTC, Adrian degenerated into a swirl of low clouds while situated 300 mi (480 km) southwest of the southern tip of Baja California.

[15] A tropical wave developed into by 0600 UTC on July 9, while situated roughly 300 mi (480 km) south of Lázaro Cárdenas, Mexico.

Steady strengthened continued and about 48 hours later, Beatriz became a Category 1 while situated roughly 560 miles (900 km) south-southwest of Cabo San Lucas.

At 0600 UTC the following day, the hurricane attained its peak intensity with winds of 115 mph (185 km/h) and a minimum barometric pressure of 955 mbar (28.2 inHg) while situated roughly 800 miles (1,300 km) southwest of Cabo San Lucas.

Curving towards the west-northwest, Beatriz began to encounter an area of cooler sea surface temperatures, which led to gradual weakening.

The system organized further and developed into Tropical Depression Three-E at 1200 UTC on July 14, while located about 290 miles (470 km) west-southwest of Manzanillo, Mexico.

The depression failed to strengthen further and dissipated at 1800 UTC on July 15, while located about 460 miles (740 km) southwest of Cabo San Lucas, Mexico.

Over the following days, slow organization occurred, and it is estimated that the system became developed into Tropical Depression Four-E at 0000 UTC on July 23.

Thus, Tropical Depression Five-E developed at 0600 UTC on July 25, while situated about 645 miles (1,038 km) south-southwest of Cabo San Lucas.

[18] A tropical wave that previously crossed the Atlantic Ocean and Caribbean Sea reached the eastern Pacific basin until late July.

Shortly after, the hurricane moved westward into a more favorable environment and began to intensify more quickly, reaching Category 4 strength on August 10.

[20] Dora weakened to Category 1 strength as it entered the Central Pacific Hurricane Center's area of responsibility on August 14.

[5] In Hawaii, heavy surf on the Big Island forced the closure of beaches, campsites, and hiking trails in the districts of Kau and Puna.

After the cloud pattern consolidated, it is estimated that Tropical Depression Eight-E developed at 0600 UTC on August 6, while located about 975 miles (1,569 km) southwest of Cabo San Lucas, Mexico.

At 0000 UTC on August 18, the cyclone was upgraded to Tropical Storm Fernanda while centered about 520 miles (840 km) southwest of Socorro Island.

The storm continued to slowly strengthened and 1200 UTC on August 19, Fernanda attained its peak intensity with maximum sustained winds of 65 mph (105 km/h) and a minimum barometric pressure of 994 mbar (29.4 inHg).

[25] The highest rainfall total reported in Mexico was 8.27 inches (210 mm) at Los Cabos, Baja California Sur.

Visible satellite imagery showed low level circulation and more organized deep convection as it became a tropical depression on September 17, while located about 475 miles (764 km) south-southeast of the southern tip of the Baja California Peninsula.

Due to the development of an eye feature and large increase in deep convection, Hilary was upgraded to hurricane on September 20, while located about 200 miles (320 km) southwest of the Baja California Peninsula.

After becoming better organized, the system developed into Tropical Depression Fourteen-E at 1200 UTC on October 8, while situated about 145 miles (233 km) south-southwest of Manzanillo, Mexico.

Stable air and increasing wind shear caused Irwin to weaken and fall to tropical depression intensity early on October 11.