These dates conventionally delimit the period of each year when most tropical cyclones form in the northeastern Pacific Ocean.

[5] The only named storm to make landfall this year was Hurricane Rosa,[1] which killed four people in Western Mexico[6] and forced over 400 to be evacuated.

[17] Tropical Depression Two-E formed on June 27 about 575 miles (925 km) south-southwest of the tip of the Baja California Peninsula.

The depression headed west-northwest, gradually turned to the northwest, and strengthened into Tropical Storm Bud on June 27.

Wind shear weakened Daniel as it approached the Big Island, and by July 15 had degenerated into an open wave.

[22] When Daniel was approaching Hawaii, moderate surf of 4 to 6 feet (1.2 to 1.8 m) impacted the south and southeast shores of the Big Island on July 13 and 14.

That day, they caused rainfall on windward slopes of the Big Island locally reaching 5 inches (130 mm).

[8] Emilia passed south of the Hawaiian Islands, producing swells of 6 to 10 feet (1.8 to 3.0 m) in height near the Puna and Ka‘ū coasts.

Shortly after entering the central Pacific, Gilma reached Category 5 intensity on the Saffir–Simpson hurricane scale, the second of the season.

It became Tropical Storm Hector quickly, and as it paralleled the coast of Mexico, it began to weaken, dissipating on August 10.

[39] An area of disturbed weather organized into a tropical depression on August 9 while located 740 miles (1,190 km) southeast of Hilo, Hawaii.

After it organized, it separated from the ITCZ and became Tropical Depression Eleven-E on August 10 while the system was about 690 miles (1,110 km) south-southeast of the southern tip of the Baja California Peninsula.

Ileana was a tropical storm on August 13, and the next day it was a dissipating swirl low-level clouds located about 520 miles (840 km) west of Punta Eugenia.

[43] Although Ileana paralleled the coast of Mexico, watches and warnings were not issued because winds of tropical storm-force were not expected to affect land.

It headed generally westward, and was upgraded into a tropical storm twelve hours after it formed and was named John.

On August 20, steady intensification began, and John was a major hurricane when it entered the central Pacific.

[1] On August 28, Tropical Depression Thirteen-E formed about 1,300 miles (2,100 km) southwest of Cabo San Lucas, Mexico.

[51] Its remnants crossed 180th meridian very early on September 7 and was absorbed by a tropical depression which became Typhoon Melissa in the Western Pacific basin.

The high pressure ridge shifted eastward, and allowed Lane to enter unfavorable conditions.

It strengthened slightly into Tropical Storm Miriam, and dissipated on September 21, having led an uneventful life without impact.

[55] Hurricane Olivia ultimately formed from a disturbance that had separated from the Intertropical Convergence Zone and become distinct by September 19.

The disturbance slowly headed westward and it organized into a tropical depression on September 22 while located about 720 miles (1,160 km) south of the southern tip of the Baja California Peninsula.

As Olivia started a small anticyclonic loop, wind shear began to weaken the hurricane.

Rosa intensified quickly, peaking at Category 2 intensity just before landfall near La Concepción on the morning of October 14.

Rosa quickly decayed over the mountains of Mexico, and its cloud shield rapidly accelerated northward through the United States, spreading moisture.

[60] On October 12, a hurricane watch was issued for the coast from Culiacán to Manzanillo and the Baja California Peninsula south of latitude 24°N.

[63] The moisture Rosa sent into the United States was a contributing factor in record rains in parts of southeastern Texas from October 15 to 19.

[69] According to the Joint Typhoon Warning Center and Japan Meteorological Agency, on October 21, a tropical depression formed west of the International Date Line, and soon exited CPHC's area of responsibility.

[77] For storms that form in the North Pacific from 140°W to the International Date Line, the names come from a series of four rotating lists.

It includes their name, duration (within the basin), peak classification and intensities, areas affected, damage, and death totals.